The information in this preliminary prospectus is not complete and may be changed. This preliminary prospectus is not an offer to sell nor does it seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

TABLE OF CONTENTS

Prospectus Supplement to Prospectus dated November 20, 2001.
WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY REFERENCE
THE PROGRESSIVE CORPORATION
USE OF PROCEEDS
CAPITALIZATION
RATIO OF EARNINGS TO FIXED CHARGES
SELECTED CONSOLIDATED FINANCIAL INFORMATION
DESCRIPTION OF NOTES
UNDERWRITING
PROSPECTUS
ABOUT THIS PROSPECTUS
WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY REFERENCE
THE PROGRESSIVE CORPORATION
USE OF PROCEEDS
RATIO OF EARNINGS TO FIXED CHARGES
DESCRIPTION OF DEBT SECURITIES
PLAN OF DISTRIBUTION
LEGAL MATTERS
EXPERTS

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Subject to Completion. Dated December      , 2001.

Prospectus Supplement to Prospectus dated November 20, 2001.

$350,000,000

The Progressive Corporation

       % Senior Notes due January        , 2012

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        Progressive will pay interest on the Notes on           and           of each year. The first such payment will be made on                     , 2002. The Notes will be issued only in denominations of $1,000 and integral multiples of $1,000.

      Progressive may redeem the Notes in whole at any time or in part from time to time at the redemption prices set forth in this prospectus.

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      Neither the Securities and Exchange Commission nor any other regulatory body has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.

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		Per Note				Total
Initial public offering price			%			$
Underwriting discount			%			$
Proceeds, before expenses, to Progressive			%			$

      The initial public offering price set forth above does not include accrued interest, if any. Interest on the Notes will accrue from December      , 2001 and must be paid by the purchaser if the Notes are delivered after                     , 2001.

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      The underwriters expect to deliver the Notes in book-entry form only through the facilities of The Depository Trust Company against payment in New York, New York on December      , 2001.

Goldman, Sachs & Co.	Salomon Smith Barney

Credit Suisse First Boston

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Prospectus Supplement dated December      , 2001.

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WHERE YOU CAN FIND MORE INFORMATION;

      We file annual, quarterly and special reports, proxy statements and other information with the Securities and Exchange Commission (“SEC”). You can read and copy our reports, proxy statements and other information at the SEC’s public reference facilities at Judiciary Plaza, 450 Fifth Street N.W., Room 1024, Washington, D.C. 20549. You can also obtain copies of these materials at prescribed rates from the Public Reference Section of the SEC, 450 Fifth Street N.W., Washington, D.C. 20549. Please call the SEC at 1-800-732-0330 for further information on the public reference facilities.

      We also file documents electronically with the SEC. The SEC maintains a Web site that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC. The address of this Web site is http://www.sec.gov. You may also inspect our reports, proxy statements and other information at the New York Stock Exchange, 20 Broad Street, New York, New York 10005.

      The SEC allows us to incorporate by reference information contained in other documents filed with the SEC. This permits us to disclose information to you by referencing these filed documents. Information incorporated by reference is an important part of this prospectus supplement, and information that we file later with the SEC will automatically update and supersede prior filings. We incorporate the following documents by reference:

	•	Our Annual Report on Form 10-K for the year ended December 31, 2000 (filed March 29, 2001).
	•	Our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2001 (filed May 14, 2001), June 30, 2001 (filed August 13, 2001), and September 30, 2001 (filed November 5, 2001).
	•	Our Current Report on Form 8-K (filed June 29, 2001).
	•	Our future filings under Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 that are made with the SEC prior to the termination of this offering, as of the date of the filing of each such document.

      We will furnish without charge to each person (including any beneficial owner) to whom a prospectus supplement is delivered, upon written or oral request, a copy of any or all of the foregoing documents incorporated herein by reference (other than certain exhibits). Requests for such documents should be directed to:

Jeffrey W. Basch

      To ensure timely delivery of these materials, you should make any request no later than 5 business days prior to the date on which you intend to invest in the Notes offered under this prospectus supplement. We will mail the materials to you by first class mail, or another equally prompt means, within 1 business day after we receive your request.

      This prospectus supplement supplements the attached prospectus dated November 20, 2001, which is part of a registration statement on Form S-3 (file no. 333-73752) that we filed with the SEC. As permitted by SEC rules, neither this prospectus supplement nor the prospectus that it updates contains all the information contained in that registration statement and its accompanying exhibits and schedules, which we also filed with the SEC. You may refer to the

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      As used in this prospectus supplement, the terms “Progressive,” “Company,” “we,” “us” and “our” refer to The Progressive Corporation and its subsidiaries.

THE PROGRESSIVE CORPORATION

      The Progressive insurance organization began business in 1937. The Progressive Corporation, an insurance holding company formed in 1965, has 73 subsidiaries, 1 mutual insurance company affiliate and 1 reciprocal company affiliate. Progressive Casualty Insurance Company is the principal operating subsidiary. Our insurance subsidiaries and affiliates provide personal automobile insurance and other specialty property-casualty insurance products and related services throughout the United States. Of the approximately 220 United States insurance company groups writing private passenger auto insurance, we ranked 4th in size for 2000 based on direct premiums written. Our ranking in the industry was derived from data reported by A.M. Best Company, Inc.

      Our personal lines business units write insurance for private passenger automobiles and recreation vehicles. The personal lines business accounted for 91% of our total net premiums written in 2000, and 89% of our total net premiums written during the first 9 months of 2001. The personal lines business is either generated by an agent or written directly by the Company. The agent channel includes business written by our network of 30,000 independent insurance agencies and through strategic alliance business relationships (other insurance companies, financial institutions, employers and national brokerage agencies). Direct business includes business written through 1-800-PROGRESSIVE^SM, the Internet and the strategic alliance business unit on behalf of affinity groups. We compete in the preferred, standard and nonstandard automobile insurance markets.

      In addition to our personal lines business, our other lines of business, which accounted for 9% of our total net premiums written in 2000, and 11% of our total net premiums written during the first 9 months of 2001, include:

	•	writing insurance for small fleets of commercial vehicles,
	•	providing collateral protection coverage and loan tracking for automobile lenders and financial institutions,
	•	providing directors’ and officers’ liability and fidelity coverage for community banks, savings and loans and credit unions, and
	•	providing related services.

      We maintain geographic diversity in our insurance underwriting business, writing personal auto policies in 48 states and the District of Columbia. We also maintain diversity in our customer base, and no customer accounts for more than 1% of our net premiums written. While we operate on a national scale, we focus our claims expertise on a state level.

      Additional information about Progressive and its subsidiaries and affiliates can be found in our documents filed with the SEC, which are incorporated herein by reference. See “Where You Can Find More Information; Incorporation by Reference” on page S-2 of this prospectus supplement.

      Our principal executive office is located at 6300 Wilson Mills Road, Mayfield Village, Ohio 44143, and our telephone number is (440) 461-5000.

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USE OF PROCEEDS

      We will use the net proceeds from this offering for general corporate purposes. Until the proceeds are used for these purposes, Progressive will add the net proceeds to its investment portfolio or those of its subsidiaries and the net proceeds may be used, in whole or in part, to support premium growth. The proceeds will be invested in securities that are similar in nature to and of approximately the same quality and maturities as those currently held in our investment portfolios. The nature of our securities holdings and their related risks are discussed in the “Investments” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in Progressive’s Annual Report on Form 10-K for the fiscal year ended December 31, 2000, and in the “Results of Operations” section in the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2001.

CAPITALIZATION

      The table below shows the capitalization of Progressive on a consolidated basis as of September 30, 2001. The table also shows adjustments to Progressive’s capitalization to reflect this offering. You should refer to the financial statements of Progressive in its Quarterly Report on Form 10-Q for the quarter ended September 30, 2001, which is incorporated by reference into this prospectus supplement. See “Where You Can Find More Information; Incorporation by Reference.”

				As of September 30,
				2001
				Actual				As Adjusted
				(in millions)
Debt:
	% Senior Notes due 2012			$	—			$	350.0
	6 5/8% Senior Notes due 2029				293.9				293.9
	7.30% Notes due 2006				99.8				99.8
	6.60% Notes due 2004				199.5				199.5
	7% Notes due 2013				148.6				148.6
	Other debt				7.3				7.3
		Total debt			749.1				1,099.1
Shareholders’ equity:
	Common Shares, $1.00 par value, issued 83.1 including treasury shares of 9.8				73.3				73.3
	Paid-in capital				541.1				541.1
	Accumulated other comprehensive income:
		Net unrealized appreciation on investment securities			103.3				103.3
		Other			(4.8	)			(4.8	)
	Retained earnings				2,388.3				2,388.3
		Total shareholders’ equity			3,101.2				3,101.2
	Total debt and shareholders’ equity			$	3,850.3			$	4,200.3

RATIO OF EARNINGS TO FIXED CHARGES

      The following table represents Progressive’s ratio of earnings to fixed charges for the periods shown:

Nine Months Ended
September 30,		Years Ended December 31,
2001		2000				1999				1998				1997				1996
10.1x			1.3x				5.7x				10.2x				9.2x				7.7x

      Earnings consist of income before income taxes and fixed charges, excluding capitalized interest. Fixed charges consist of interest and amortization on indebtedness, capitalized interest and the portion of rents representative of the interest factor.

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SELECTED CONSOLIDATED FINANCIAL INFORMATION

      The following tables set forth selected consolidated financial information concerning Progressive and its subsidiaries for the five years ended December 31, 2000, and for the nine months ended September 30, 2001 and 2000. You should refer to the financial statements of Progressive in its Quarterly Report on Form 10-Q, filed with the SEC on November 5, 2001, which is incorporated by reference into this prospectus supplement. See “Where You Can Find More Information; Incorporation by Reference.” The information for the interim periods is unaudited; however, management believes the results include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement. The interim results of operations may not be indicative of the results for the full year.

				Nine Months Ended
				September 30,								Years Ended December 31,
				2001				2000				2000				1999				1998				1997				1996
				(Dollars in millions, except per share amounts)
Consolidated Statement of
Income Data:
Revenues:
		Premiums Earned		$	5,262.6			$	4,716.4			$	6,348.4			$	5,683.6			$	4,948.0			$	4,189.5			$	3,199.3
		Investment income (1)			305.1				284.0				385.2				340.7				294.8				274.9				225.8
		Net realized gains/ (losses)on security sales (2)			(88.8	)			(9.3	)			16.9				47.2				11.4				98.5				7.1
		Service revenues			17.6				15.2				20.5				47.5				38.2				45.3				46.2
		Other income (3)			—				—				—				5.2				—				—				—
Total revenues					5,496.5				5,006.3				6,771.0				6,124.2				5,292.4				4,608.2				3,478.4
Expenses:
		Losses and loss adjustment expenses			3,901.7				3,971.7				5,279.4				4,256.4				3,376.3				2,967.5				2,236.1
		Policy acquisition costs			636.5				587.1				788.0				745.0				659.9				607.8				482.6
		Other underwriting expenses			485.3				398.3				559.3				583.8				495.8				336.0				208.5
		Investment expenses			9.3				7.3				9.1				9.5				7.4				9.9				6.1
		Service expenses			14.9				16.3				21.4				40.9				30.8				43.9				41.9
		Interest expense			38.0				59.7				77.8				76.4				61.1				64.6				61.5
		Non-recurring item (4)			—				—				4.2				—				—				—				—
Total expenses					5,085.7				5,040.4				6,739.2				5,712.0				4,631.3				4,029.7				3,036.7
Income/(loss) before income taxes					410.8				(34.1	)			31.8				412.2				661.1				578.5				441.7
Provision/(benefit) for income taxes					124.1				(32.2	)			(14.3	)			117.0				204.4				178.5				128.0
Net income/(loss)				$	286.7			$	(1.9	)		$	46.1			$	295.2			$	456.7			$	400.0			$	313.7
Per Common Share (5):
	Basic			$	3.89			$	(0.03	)		$	.63			$	4.05			$	6.30			$	5.56			$	4.29
	Diluted			$	3.82			$	(0.03	)		$	.62			$	3.96			$	6.11			$	5.31			$	4.14
Net premiums written				$	5,443.4			$	4,874.1			$	6,196.1			$	6,124.7			$	5,299.7			$	4,665.1			$	3,441.7
GAAP operating ratios:
		Loss and loss adjustment expense ratio			74.2	%			84.2	%			83.2	%			74.9	%			68.2	%			70.9	%			69.9	%
		Underwriting expense ratio			21.3	%			20.9	%			21.2	%			23.4	%			23.4	%			22.5	%			21.6	%
		Combined ratio			95.5	%			105.1	%			104.4	%			98.3	%			91.6	%			93.4	%			91.5	%

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			Nine Months Ended
			September 30,								Years Ended December 31,
			2001				2000				2000				1999				1998				1997				1996
			(Dollars in millions, except per share amounts)
Statutory operating ratios:
	Loss and loss adjustment expense ratio			74.3	%			84.3	%			83.2	%			75.0	%			68.5	%			71.1	%			70.2	%
	Underwriting expense ratio			20.6	%			20.0	%			21.0	%			22.1	%			22.4	%			20.7	%			19.8	%
	Combined ratio (6)			94.9	%			104.3	%			104.2	%			97.1	%			90.9	%			91.8	%			90.0	%

			As of September 30,								As of December 31,
			2001				2000				2000				1999				1998				1997				1996
											(In millions)
Consolidated Balance
Sheet Data:
	Total assets		$	10,858.2			$	10,493.5			$	10,051.6			$	9,704.7			$	8,463.1			$	7,559.6			$	6,183.9
	Debt			749.1				1,049.1				748.8				1,048.6				776.6				775.9				775.7
	Shareholders’ equity			3,101.2				2,795.0				2,869.8				2,752.8				2,557.1				2,135.9				1,676.9

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(1)	Investment income includes dividends and interest.
(2)	Net realized gains (losses) for the nine months ended September 30, 2001 and 2000, includes $49.9 million and $22.4 million, respectively, of write-downs on securities determined to have an other-than-temporary decline in market value. For the years ended December 31, 2000, 1999 and 1998, Progressive wrote down $46.5 million, $16.3 million and $32.1 million, respectively, of securities. During 1997, Progressive sold $178.4 million (proceeds of $200.8 million) of its non-investment grade commercial mortgage-backed securities, recognizing $22.4 million of net realized gains on security sales. A bankruptcy-remote subsidiary of Progressive acquired $22.8 million of the resecuritized debt, which was subsequently sold in 1998 for a net gain of $3.5 million.
(3)	For the year ended December 31, 1999, other income represents the gain on the sale of Progressive’s aircraft to a company independently owned by Peter B. Lewis, Progressive’s Chairman of the Board and then President and Chief Executive Officer.
(4)	For the year ended December 31, 2000, the non-recurring item represents the realization of the foreign currency translation loss associated with the substantial liquidation of the Company’s foreign subsidiary.
(5)	Basic earnings per share are computed using the weighted average number of Common Shares outstanding and diluted earnings per share includes common stock equivalents, including stock options, assumed outstanding during the period.
(6)	Industry combined ratios for the personal auto insurance market, presented on a statutory basis and obtained from A. M. Best Company Inc.’s Aggregates & Averages-Property/ Casualty, are set forth below:

Years Ended December 31,
2000				1999				1998				1997				1996
	109.5	%			103.5	%			101.1	%			99.5	%			101.0	%

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DESCRIPTION OF NOTES

      The following description of the Notes offered by this prospectus supplement supplements the description of the general terms and provisions of the Notes set forth in the accompanying prospectus (the Notes are referred to in that prospectus as the “Debt Securities”). You should carefully read the entire prospectus and prospectus supplement to understand fully the terms of the Notes. All of the information set forth below is qualified in its entirety by the more detailed explanation set forth in the accompanying prospectus.

General

      The Notes are a single series of senior debt securities issued by Progressive under the indenture dated September 15, 1993, between Progressive and State Street Bank and Trust Company as supplemented, which is more fully described in the prospectus. The Notes are unsecured and will rank equally with all of Progressive’s other senior and unsubordinated debt. As of September 30, 2001, Progressive had $749.1 million of senior unsubordinated debt outstanding. See “Capitalization.” The indenture does not limit the amount of Notes that Progressive may issue or the amount of debt that Progressive may incur in the future.

      The maximum principal amount of the Notes that Progressive will issue initially is $350 million. The Notes will mature on January      , 2012. Progressive has the option to redeem the Notes prior to their stated maturity on the terms described below; holders of the Notes do not have any similar option to require Progressive to redeem the Notes before their stated maturity. The Notes will not be entitled to the benefit of any sinking fund.

      Progressive will pay interest on the Notes at an annual rate of           % from the date of issuance. Interest will be computed on the basis of a 360-day year of twelve 30-day months. Interest will be payable semiannually on each           and           , beginning                     , 2002, to the persons in whose names the Notes are registered at the close of business on the preceding           or           , respectively, except that any interest payable upon maturity or any earlier redemption of the Notes will be payable to the person to whom the principal of the Note is payable.

Optional Redemption

      We may redeem the Notes, in whole at any time or in part from time to time at our option, at a redemption price equal to accrued and unpaid interest on the principal amount being redeemed to the redemption date plus the greater of:

	•	100% of the principal amount of the Notes to be redeemed; and
	•	the sum of the present values of the remaining scheduled payments of principal and interest on the Notes to be redeemed (not including any portion of such payments of interest accrued to the date of redemption) discounted to the date of redemption on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Adjusted Treasury Rate, plus      basis points.

      “Adjusted Treasury Rate” means, with respect to any date of redemption, the rate per year equal to the semiannual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that date of redemption.

      “Comparable Treasury Issue” means the United States Treasury security selected by the Quotation Agent as having a maturity comparable to the remaining term of the Securities to be redeemed that would be used, at the time of selection and under customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the Notes.

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      “Comparable Treasury Price” means, with respect to any date of redemption, the average of the Reference Treasury Dealer Quotations for the date of redemption, after excluding the highest and lowest Reference Treasury Dealer Quotations, or if the trustee obtains fewer than three Reference Treasury Dealer Quotations, the average of all Reference Treasury Dealer Quotations.

      “Quotation Agent” means Goldman, Sachs & Co. or another Reference Treasury Dealer appointed by Progressive.

      “Reference Treasury Dealer” means each of Goldman, Sachs & Co. and Salomon Smith Barney Inc. and their respective successors and, at the option of Progressive, other nationally recognized investment banking firms that are primary dealers of U.S. government securities in New York City. If any of the foregoing ceases to be a primary dealer of U.S. government securities in New York City, Progressive must substitute another primary dealer of U.S. government securities.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any date of redemption, the average, as determined by the trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the trustee by the Reference Treasury Dealer at 5:00 p.m., New York City time, on the third business day before the date of redemption.

Supplemental Indenture

      In connection with the offering of the Notes pursuant to this prospectus supplement, the indenture will be amended by a supplemental indenture to add certain restrictions for the benefit of the holders of the Notes offered by this prospectus supplement. These additional restrictions will apply to Progressive only with respect to the Notes offered by this prospectus supplement.

Definitions Applicable to the Additional Restrictions

      For purposes of these additional restrictions, these terms have the following meanings:

      “Consolidated Tangible Net Worth” means, at any date, the total assets appearing on the consolidated balance sheet of Progressive and its consolidated subsidiaries as of the end of the then most recent fiscal quarter of Progressive, prepared in accordance with generally accepted accounting principles, less (a) the total liabilities appearing on such balance sheet and (b) intangible assets. “Intangible assets” means the value, as shown on or reflected in such balance sheet, of (i) all trade names, trademarks, licenses, patents, copyrights and goodwill, (ii) organizational costs, and (iii) unamortized debt discount and expense, less unamortized premium.

      “Designated Subsidiary” means (i) Progressive Casualty Insurance Company, so long as it remains a subsidiary of Progressive, (ii) any other consolidated subsidiary of Progressive the assets of which constitute 10% or more of the Total Assets, and (iii) any subsidiary which is a successor to all or substantially all of the business or properties of any such subsidiary.

      “Total Assets” means, at any date, the total assets appearing on the consolidated balance sheet of Progressive and its consolidated subsidiaries as of the end of the then most recent fiscal quarter of Progressive, prepared in accordance with generally accepted accounting principles.

Additional Restrictions

      The indenture, as supplemented, will impose the following additional restrictive covenants on Progressive for the benefit of the holders of the Notes offered by this prospectus supplement.

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      Limitation on Liens. The indenture will provide that Progressive will not, nor will it permit any Designated Subsidiary to, incur, issue, assume or guarantee any indebtedness for money borrowed if (i) that indebtedness is secured by a pledge, mortgage, deed of trust or other lien on any shares of capital stock or indebtedness of any Designated Subsidiary (a “lien”) and (ii) the aggregate amount of the indebtedness so secured exceeds an amount equal to 15% of Progressive’s Consolidated Tangible Net Worth, unless the Notes are also secured equally and ratably with the other indebtedness. For purposes of this restriction, a “lien” will not include the pledge to, or deposit with, any state or provincial insurance regulatory authorities of any investment securities by Progressive or any of its subsidiaries.

      This restriction will not apply to indebtedness secured by:

	(a)	Liens on any shares of capital stock or indebtedness of or acquired from a corporation merged or consolidated with or into, or otherwise acquired by, Progressive or a Designated Subsidiary;
	(b)	Liens to secure indebtedness of a Designated Subsidiary to Progressive or to another Designated Subsidiary, but only as long as the indebtedness is owned or held by Progressive or a Designated Subsidiary; or

	(c)	Any extension, renewal or replacement (or successive extensions, renewals or replacements), in whole or in part, of any lien referred to in (a) or (b) above.

      Consolidation, Merger, Sale, Conveyance and Lease. The indenture will permit Progressive to consolidate or merge with or into any other entity or entities, or to sell, convey or lease all or substantially all of its property to any other entity, only if:

	(a)	the entity formed by such consolidation, or into which Progressive is merged or that acquires or leases all or substantially all of the property of Progressive, is a corporation or other entity organized under the laws of the United States, any state thereof or the District of Columbia, and the entity expressly assumes Progressive’s obligations under the Notes and the indenture; and
	(b)	immediately after the transaction, no “event of default” (as defined in the indenture) exists.

      This restriction will not apply if Progressive is the entity that survives any of these transactions.

Book-Entry System; Delivery and Form

General

      The Notes will be issued in the form of one or more fully registered global securities. For purposes of this prospectus supplement, “Global Security” refers to the global security or global securities representing the entire issue of the Notes. The Global Security will be deposited with the trustee as custodian for DTC and registered in the name of Cede & Co. (“Cede”) as DTC’s nominee. Except in the limited circumstances described below, the Notes will not be issued in definitive certificated form. The Global Security may be transferred, in whole and not in part, only to another nominee of DTC. We understand as follows with respect to the rules and operating procedures of DTC, which affect transfers of interests in the Global Security.

DTC

      DTC is a limited purpose trust company organized under the New York Banking Law, a “banking organization” within the meaning of the New York Banking Law, a member of the

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      Interests in the Global Security will be shown on, and transfers thereof will be effected only through, records maintained by DTC and its Participants. The Global Security will trade in DTC’s Same-Day Funds Settlement System until maturity, and secondary market trading activity for the Global Security will therefore settle in immediately available funds. The laws of some states require that certain persons take physical delivery in definitive form of securities. Consequently, the ability to transfer beneficial interests in the Global Security to such persons may be limited.

      So long as Cede, as the nominee of DTC, is the registered owner of the Global Security, Cede for all purposes will be considered the sole holder of the Notes under the indenture. Except as provided below, owners of beneficial interests in the Global Security will not be entitled to have Notes registered in their names, will not receive or be entitled to receive physical delivery of Notes in definitive form and will not be considered the holders thereof under the indenture. Accordingly, any person owning a beneficial interest in the Global Security must rely on the procedures of DTC and, if such person is not a Participant in DTC, on the procedures of the Participant through which such person, directly or indirectly, owns its interest, to exercise any rights of a holder of Notes.

      Because DTC can only act on behalf of Participants, who in turn act on behalf of Indirect Participants and certain banks, the ability of an owner of a beneficial interest in the Notes to pledge such Notes to persons or entities that do not participate in the DTC system, or otherwise take actions in respect of such Notes, may be affected by the lack of a physical certificate for such Notes.

      Payment of principal of and interest on the Notes will be made to Cede, the nominee for DTC, as the registered owner of the Global Security. Neither Progressive nor the trustee will have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests in the Global Security or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests.

      Upon receipt of any payment of principal of or interest on the Global Security, we understand that it is the practice of DTC to credit the Participants’ accounts with payments in amounts proportionate to their respective beneficial interests in the principal amount of the Global Security

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      If we redeem less than all of the Notes, we have been advised that it is DTC’s practice to determine by lot the amount of the interest of each Participant in the Notes to be redeemed.

      We understand that under existing industry practices, if we request holders of the Notes to take action, or if an owner of a beneficial interest in a Note desires to take any action which a holder is entitled to take under the indenture, then (i) DTC would authorize the Participants holding the relevant beneficial interests to take such action, and (ii) such Participants would authorize the beneficial owners owning through such Participants to take such action or would otherwise act upon the instructions of beneficial owners owning through them.

      Although DTC has agreed to the foregoing procedures in order to facilitate transfers of Notes among its Participants, it is under no obligation to perform or continue to perform such procedures and such procedures may be discontinued at any time. Neither we nor the trustee will have any responsibility for the performance by DTC or its Participants or Indirect Participants of their respective obligations under the rules and procedures governing their operations.

      If an event of default by us specified in the indenture has occurred and is continuing and all principal and accrued interest in respect of the Notes shall have become immediately due and payable or if DTC is at any time unwilling, unable or ineligible to continue as depositary for the Global Security and a successor depositary is not appointed by us within 90 days, we will issue individual certificated Notes in definitive form in exchange for the Global Security. In addition, we may at any time determine not to have the Notes represented by the Global Security, and, in such event, will issue individual certificated Notes in definitive form in exchange for the Global Security. In any such instance, an owner of a beneficial interest in the Global Security will be entitled to physical delivery of individual certificated Notes in definitive form equal in principal amount to such beneficial interest in the Global Security and to have all such certificated Notes registered in its name. Individual certificated Notes so issued in definitive form will be issued in denominations of $1,000 and integral multiples thereof and will be issued in registered form only, without coupons.

Same-Day Settlement and Payment

      Settlement for the Notes will be made by the underwriters in immediately available funds. All payments of principal and interest on the Notes will be made by Progressive in immediately available funds. The Notes will trade in DTC’s same-day funds settlement system until maturity, and secondary market trading activity in the Notes therefore will be required by DTC to settle in immediately available funds.

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UNDERWRITING

      Progressive and the underwriters for the offering named below have entered into an underwriting agreement with respect to the Notes. Subject to certain conditions, each underwriter has severally agreed to purchase the principal amount of Notes indicated in the following table.

			Principal Amount of
Underwriters			Notes
Goldman, Sachs & Co.			$
Salomon Smith Barney Inc.
Credit Suisse First Boston Corporation
Morgan Stanley & Co. Incorporated
NatCity Investments, Inc.
	Total		$	350,000,000

      The underwriters are committed to take and pay for all of the Notes being offered, if any are taken.

      Notes sold by the underwriters to the public will initially be offered at the initial public offering price set forth on the cover of this prospectus. Any Notes sold by the Underwriters to securities dealers may be sold at a discount from the initial public offering price of up to      % of the principal amount of Notes. Any such securities dealers may resell any Notes purchased from the underwriters to certain other brokers or dealers at a discount from the initial public offering price of up to      % of the principal amount of Notes. If all the Notes are not sold at the initial offering price, the underwriters may change the offering price and the other selling terms.

      The Notes are a new issue of securities with no established trading market. Progressive does not intend to apply for listing of the Notes on a national securities exchange. Progressive has been advised by the underwriters that the underwriters intend to make a market in the Notes but are not obligated to do so and may discontinue market making at any time without notice. No assurance can be given as to the liquidity of the trading market for the Notes.

      In connection with the offering, the underwriters may purchase and sell Notes in the open market. These transactions may include short sales, stabilizing transactions and purchases to cover positions created by short sales. Short sales involve the sale by the underwriters of a greater number of Notes than they are required to purchase in the offering. Stabilizing transactions consist of certain bids or purchases made for the purpose of preventing or retarding a decline in the market price of the Notes while the offering is in progress.

      The underwriters also may impose a penalty bid. This occurs when a particular underwriter repays to the underwriters a portion of the underwriting discount received by it because the representatives have repurchased Notes sold by or for the account of such underwriter in stabilizing or short covering transactions.

      These activities by the underwriters may stabilize, maintain or otherwise affect the market price of the Notes. As a result, the price of the Notes may be higher than the price that otherwise might exist in the open market. If these activities are commenced, they may be discontinued by the underwriters at any time. These transactions may be effected in the over-the-counter market or otherwise.

      Progressive estimates that its share of the total expenses of the offering, excluding underwriting discounts and commissions, will be approximately $150,000.

      Progressive has agreed to indemnify the several underwriters against certain liabilities, including liabilities under the Securities Act of 1933.

      Jeffrey D. Kelly, Executive Vice President and Chief Financial Officer, National City Corporation, an affiliate of NatCity Investments, Inc., serves as a director of Progressive. In addition, Progressive has a banking relationship, including an unsecured line of credit, with National City Corporation.

      In the ordinary course of their respective businesses, the underwriters and certain of their affiliates have engaged and may in the future engage in investment banking and commercial banking transactions with Progressive.

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The Progressive Corporation

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         We may offer, from time to time in one or more transactions, our notes, debentures or other unsecured evidences of indebtedness (the “debt securities”) with an aggregate initial public offering price of up to $500,000,000. The debt securities will rank equally with all other current and future unsecured and unsubordinated indebtedness of the Company and will rank senior to subordinated indebtedness, if any.

      We may issue debt securities in one or more series. We will specify the terms applicable to each series in a supplement to this prospectus (a “prospectus supplement”). Among other items, a prospectus supplement may include the following terms, if applicable:

	•	title of the series
	•	aggregate principal amount
	•	purchase price
	•	maturity date
	•	interest rate and interest payment dates
	•	any optional or mandatory redemption terms
	•	any sinking fund provisions
	•	listing on a securities exchange
	•	name of each dealer, underwriter or agent involved in the offering
	•	any compensation payable to any such dealer, underwriter or agent

      This prospectus may not be used to sell debt securities unless accompanied by a prospectus supplement.

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      THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

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The date of this prospectus is November 20, 2001

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      No person has been authorized to give any information or to make any representations not contained or incorporated by reference in this prospectus in connection with the offering made hereby, and if given or made, such information or representations must not be relied upon. This prospectus does not constitute an offer to sell or a solicitation of an offer to buy any securities other than the registered securities to which it relates or an offer to sell or a solicitation of an offer to buy any securities in any jurisdiction in which such offer or solicitation may not be legally made. The delivery of this prospectus at any time does not imply that the information herein is correct as of any time subsequent to the date hereof.

ABOUT THIS PROSPECTUS

      This prospectus is a part of a registration statement that we filed with the Securities and Exchange Commission (“SEC”). This prospectus omits some of the information contained in the registration statement. Similarly, our discussions in this prospectus of certain documents are summaries only and are not necessarily complete. For a more complete understanding of the debt securities, you should refer to the registration statement and related exhibits. You can read and copy the registration statement and exhibits at the SEC’s public reference facilities or at the SEC’s Web site referred to below, or you can obtain them from us in the manner set forth in the next section.

      This prospectus provides you with a general description of the debt securities we may offer. Each time we sell debt securities, we will provide a prospectus supplement that will contain the specific information about the terms of that offering. The prospectus supplement may also add, update or change information contained in this prospectus. You should read both this prospectus and any prospectus supplement, together with the registration statement and the additional information described in the next section.

WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY REFERENCE

      We file annual, quarterly and special reports, proxy statements and other information with the SEC. You can read and copy our reports, proxy statements and other information at the SEC’s public reference facilities at Judiciary Plaza, 450 Fifth Street N.W., Room 1024, Washington, D.C. 20549. You can also obtain copies of these materials at prescribed rates from the Public Reference Section of the SEC, 450 Fifth Street N.W., Washington, D.C. 20549. Please call the SEC at 1-800-732-0330 for further information on the public reference facilities.

      We also file documents electronically with the SEC. The SEC maintains a Web site that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC. The address of this Web site is http://www.sec.gov. You may also inspect our reports, proxy statements and other information at the New York Stock Exchange, 20 Broad Street, New York, New York 10005.

      The SEC allows us to incorporate by reference information in other documents filed with the SEC. This permits us to disclose information to you by referencing these filed documents. Information incorporated by reference is an important part of this prospectus, and information that we file later with the SEC will automatically update and supersede prior filings. We incorporate the following filed documents by reference:

	•	Our Annual Report on Form 10-K for the year ended December 31, 2000 (filed March 29, 2001).
	•	Our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2001 (filed on May 14, 2001), June 30, 2001 (filed August 13, 2001), and September 30, 2001 (filed November 5, 2001).
	•	Our Current Report on Form 8-K, filed on June 29, 2001.
	•	Our future filings under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 which are made with the SEC prior to the termination of this offering, as of the date of the filing of each such document.

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      We will furnish without charge to each person (including any beneficial owner) to whom a prospectus is delivered, upon written or oral request, a copy of any or all of the foregoing documents incorporated herein by reference (other than certain exhibits). Requests for such documents should be directed to:

	Jeffrey W. Basch
	Chief Accounting Officer
	The Progressive Corporation
	6300 Wilson Mills Road
	Mayfield Village, Ohio 44143
	(440) 446-2851

THE PROGRESSIVE CORPORATION

      The Progressive insurance organization began business in 1937. The Progressive Corporation, an insurance holding company formed in 1965, has 73 subsidiaries, 1 mutual insurance company affiliate and 1 reciprocal company affiliate. Progressive Casualty Insurance Company is the principal operating subsidiary. Our insurance subsidiaries and affiliates provide personal automobile insurance and other specialty property-casualty insurance products and related services throughout the United States. Of the approximately 220 United States insurance company groups writing private passenger auto insurance, we ranked 4th in size for 2000 based on direct premiums written. Our ranking in the industry was derived from data reported by A.M. Best Company, Inc.

      Our personal lines business units write insurance for private passenger automobiles and recreation vehicles. The personal lines business accounted for 91% of our total net premiums written in 2000, and 89% of our total net premiums written during the first 9 months of 2001. The personal lines business is generated either by an agent or written directly by the Company. The agent channel includes business written by our network of 30,000 independent insurance agencies and through strategic alliance business relationships (other insurance companies, financial institutions, employers and national brokerage agencies). Direct business includes business written through 1-800-PROGRESSIVE^SM, the Internet and the strategic alliance business unit on behalf of affinity groups. We compete in the preferred, standard and nonstandard automobile insurance markets.

      In addition to our personal lines business, our other lines of business, which accounted for 9% of our total net premiums written in 2000, and 11% of the total net premiums written during the first 9 months of 2001, include:

	•	writing insurance for small fleets of commercial vehicles,
	•	providing collateral protection coverage and loan tracking for automobile lenders and financial institutions,
	•	providing directors’ and officers’ liability and fidelity coverage for community banks, savings and loans and credit unions, and
	•	providing related services.

      We maintain geographic diversity in our insurance underwriting business, writing personal auto policies in 48 states and the District of Columbia. We also maintain diversity in our customer base, where no customer comprises more than 1% of our net premiums written. While we operate on a national scale, we focus our claims expertise on a state level.

      Additional information about Progressive and its subsidiaries and affiliates can be found in our documents filed with the SEC, which are incorporated herein by reference. See “Where You Can Find More Information; Incorporation by Reference” on page 2 of this prospectus. Also, additional information is available on our Web site, www.progressive.com. The information posted on our Web site is not incorporated by reference into this prospectus.

      Our principal executive office is located at 6300 Wilson Mills Road, Mayfield Village, Ohio 44143, and our telephone number is (440) 461-5000.

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USE OF PROCEEDS

      Except as may be otherwise provided in an applicable prospectus supplement, we will use the net proceeds of the sale of debt securities for general corporate purposes. Unless and until otherwise applied, the net proceeds will be added to the investment portfolios of the Company or its subsidiaries and may be used, in whole or in part, to support premium growth. Such proceeds will be invested in securities that are similar in nature to, and of approximately the same quality and maturities as, those currently held in our investment portfolios. Discussions of the nature of our securities holdings, and the risks relating thereto, are set forth in the “Investments” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2000, and in the “Results of Operations” section in the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2001.

RATIO OF EARNINGS TO FIXED CHARGES

      The following table represents Progressive’s ratio of earnings to fixed charges for the periods shown:

Nine Months Ended
September 30,				Years Ended December 31,
2001				2000				1999				1998				1997				1996
	10.1x				1.3x				5.7x				10.2x				9.2x				7.7x

      Earnings consist of income before income taxes and fixed charges, excluding capitalized interest. Fixed charges consist of interest and amortization on indebtedness, capitalized interest and the portion of rents representative of the interest factor.

DESCRIPTION OF DEBT SECURITIES

      The Company may offer under this prospectus and one or more prospectus supplements debt securities not exceeding $500,000,000 in aggregate initial public offering price. The following description of the terms of the debt securities sets forth certain general terms and provisions of the debt securities which may be offered under a prospectus supplement. The particular terms and provisions of the debt securities offered by any prospectus supplement and the extent, if any, to which such general terms and provisions may apply to the debt securities so offered will be described in the prospectus supplement relating to such debt securities.

      The debt securities will represent unsecured general obligations of the Company. The debt securities will rank equally with all other existing and future unsecured and unsubordinated indebtedness of the Company and will rank senior to subordinated indebtedness, if any. We will issue the debt securities under an Indenture dated as of September 15, 1993, between the Company and State Street Bank and Trust Company, as trustee. Debt securities may be issued in one or more series under the indenture. The indenture does not limit the amount of debt securities or any other debt which the Company may incur. In addition, the provisions of the indenture do not afford holders of the debt securities protection in the event of a highly leveraged transaction, reorganization, restructuring, merger or similar transaction involving the Company that may adversely affect holders of the debt securities. The following summaries of certain provisions of the indenture do not purport to be complete and are subject to, and are qualified in their entirety by reference to, all provisions of the indenture, which is an exhibit to the registration statement of which this prospectus is a part. Certain capitalized terms used herein are defined in the indenture. References are to sections or articles of the indenture.

General

      The indenture does not limit the amount of debt securities which may be issued thereunder and provides that debt securities may be issued in series up to the aggregate principal amount which we may authorize from time to time. The debt securities may be denominated and payable in U.S. dollars, foreign currencies or units

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      Reference is made to the appropriate prospectus supplement for the following terms of each series of debt securities in respect of which this prospectus is being delivered:

	•	the title, aggregate principal amount and authorized denominations of such debt securities;
	•	the purchase price of such debt securities (expressed as a percentage of the principal amount thereof);
	•	the date on which such debt securities will mature;
	•	the rate or rates (which may be fixed or variable) per annum at which such debt securities will bear interest, if any, or the method by which such rate or rates will be determined;
	•	the coin or currency or units based on or relating to currencies in which such debt securities may be purchased and in which payment of principal and interest will be made;
	•	the periods for which and the dates on which such interest, if any, will be payable;
	•	the place or places where the principal of and premium and interest, if any, on such debt securities will be payable;
	•	the terms of any mandatory or optional redemption (including any sinking fund);
	•	whether such debt securities will be issuable in registered form or bearer form (with or without coupons) or both, and, if debt securities in bearer form will be issued, restrictions applicable to the exchange of one form for another and to the offer, sale and delivery of debt securities in bearer form;
	•	whether, and under what circumstances, the Company will pay additional amounts on such debt securities held by a person who is not a U.S. person (as defined in an appropriate prospectus supplement) in respect of any tax, assessment or governmental charge withheld or deducted, and if so, whether the Company will have the option to redeem such debt securities rather than pay such additional amounts; and
	•	any other specific terms of such series.

If a prospectus supplement specifies that debt securities are denominated in a currency other than U.S. dollars or U.S. currency units, such prospectus supplement shall also specify the denomination in which such debt securities will be issued and the coin or currency or currency unit in which the principal of and premium and interest, if any, on such debt securities will be payable, which may be U.S. dollars based upon the exchange rate for such other currency or currency unit existing on or about the time a payment is due. (Section 2.3 of the indenture)

      Debt securities may be presented for exchange and registered debt securities may be presented for transfer in the manner, at the places and subject to the restrictions set forth in the indenture. Such services will be provided without charge, other than any tax or other governmental charge payable in connection therewith, but subject to the limitations provided in the indenture. Debt securities in bearer form and the coupons, if any, pertaining thereto will be transferable by delivery. (Section 2.8 of the indenture)

      The Company is organized as a holding company that owns subsidiary companies. Our subsidiaries conduct substantially all of our business operations. The holding company structure results in two principal risks. First, our subsidiaries may be restricted by contractual provisions or applicable law from providing the Company with the cash it needs to pay its debt obligations, including payments under the debt securities. Second, in any liquidation, recapitalization or insolvency proceeding involving any subsidiary, the Company’s rights and the rights of the Company’s creditors (including the holders of debt securities) to participate in the assets of any such subsidiary will generally be subject to the prior claims of the subsidiary’s creditors.

      In addition, insurance statutes in many states limit the extent to which regulated insurance companies may pay dividends and transfer assets to their affiliates and either prohibit or require prior regulatory approval for the payment of dividends and other distributions in excess of such limits. Since a source of the Company’s

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Global Securities

      The Company may issue debt securities in the form of one or more global securities that will be deposited with a depositary or with a nominee for a depositary identified in an appropriate prospectus supplement and registered in the name of the depositary or its nominee. In such case, one or more global securities will be issued in a denomination or aggregate denominations equal to the portion of the aggregate principal amount of outstanding debt securities to be represented by such global security or securities. Unless and until it is exchanged in whole or in part for debt securities in definitive registered form, a global security may not be transferred, except as a whole by the depositary for such global security to a nominee of such depositary or by a nominee of such depositary to such depositary or another nominee of such depositary or by such depositary or any such nominee to a successor of such depositary or a nominee of such successor.

      The specific terms of the depositary arrangement with respect to any debt securities to be represented by a global security will be described in a prospectus supplement relating thereto.

Events of Default, Waiver and Notice

      As to any series of debt securities, an event of default is defined in the indenture as:

	•	default for 30 days in payment of any interest on the debt securities of such series;
	•	default in payment of the principal of or premium, if any, on the debt securities of such series when due either at maturity, upon redemption, by declaration or otherwise;
	•	default in the payment of a sinking fund installment, if any, on the debt securities of such series;
	•	default by the Company in the performance of any other covenant or warranty contained in the indenture for the benefit of such series which shall not have been remedied for a period of 60 days after notice given as specified in the indenture; and
	•	certain events of bankruptcy, insolvency and reorganization of the Company. (Section 5.1 of the indenture)

An event of default with respect to a particular series of debt securities issued under the indenture does not necessarily constitute an event of default with respect to any other series of debt securities issued thereunder. The indenture provides that the trustee may withhold notice to the holders of debt securities of any series of any default (except in payment of principal of, or premium, if any, or interest on such debt securities) if the trustee determines, in good faith, that it is in the interest of the holders of debt securities of such series to do so; provided, however, that in the case of a default of the character specified in the fourth bullet point above, no such notice to holders of debt securities of such series shall be given until at least 30 days after the occurrence thereof. (Section 5.11 of the indenture)

      The indenture provides that if an event of default described in the first four bullet points above with respect to a particular series of debt securities occurs and continues, either the trustee or the holders of at least 25% in principal amount of the debt securities of such series then outstanding may declare the entire principal (or, in the case of original issue discount debt securities, the portion thereof specified in the terms thereof) of all outstanding debt securities of such series and the interest accrued thereon, if any, to be due and payable immediately. If an event of default described in the fifth bullet point above occurs and continues, either the trustee or the holders of at least 25% in principal amount of all debt securities then outstanding thereunder (voting as one class) may declare the entire principal (or, in the case of original issue discount debt securities, the portion thereof specified in the terms thereof) of all debt securities then outstanding thereunder and the interest accrued thereon, if any, to be due and payable immediately. Upon certain conditions such declarations may be annulled and past defaults (except for defaults in the payment of principal of or premium, if any, or interest on such debt securities) may be waived by the holders of a majority in principal amount of the debt

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      The indenture provides that holders of a majority in principal amount of the outstanding debt securities of each series affected (with each series voting as a separate class) shall have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee under the indenture with respect to debt securities of such series, subject to certain limitations specified in the indenture, provided that the holders of debt securities shall have offered to the trustee reasonable security or indemnity against expenses and liabilities. (Sections 5.9 and 6.2(d) of the indenture) The indenture requires us to deliver annually to the trustee a written statement as to the absence of certain defaults under the indenture. (Section 3.5 of the indenture) Whenever the indenture provides for an action by, or the determination of any of the rights of, or any distribution to, holders of debt securities denominated in U.S. dollars and debt securities denominated in any other currency or currency unit, in the absence of any provision to the contrary in the form of debt security of any particular series, any amount in respect of any debt security denominated in a currency or currency unit other than U.S. dollars shall be treated for any such action or distribution as the amount of U.S. dollars that could be obtained for such amount on such reasonable basis of exchange and as of such date as the Company reasonably specifies to the trustee or, in the absence of such specification, as the trustee may determine. (Section 11.11 of the indenture) Under the terms of the indenture, the holders of a majority in aggregate principal amount of all series of the debt securities affected thereby at the time outstanding may waive compliance with certain covenants contained in the indenture. (Section 5.10 of the indenture)

Modification of the Indenture

      If the Company receives the consent of the holders of not less than 66 2/3% in aggregate principal amount of the outstanding debt securities affected thereby, we may enter into a supplemental indenture with the trustee to modify the indenture or any supplemental indenture or the rights of the holders of such debt securities. However, without the consent of the holder of each debt security affected thereby, no such modification shall:

	•	extend the final maturity of any debt security,
	•	reduce the principal amount thereof,
	•	reduce the rate or extend the time of payment of interest thereon,
	•	change the currency or currency unit of payment thereof,
	•	change the method by which amounts of payments of principal or interest thereon are determined,
	•	reduce the portion of the principal amount of an original issue discount debt security due and payable upon acceleration of the maturity thereof or the portion of the principal amount thereof provable in bankruptcy,
	•	reduce any amount payable upon redemption of any debt security, or impair or affect the right of a holder of any debt security to institute suit for the payment thereof or, if the debt securities provide therefor, any right of repayment at the option of the holder of a debt security, or
	•	reduce the aforesaid percentage of debt securities of any series, the consent of the holders of which is required for any such modification. (Section 8.2 of the indenture)

The indenture also provides that the Company and the trustee may from time to time execute supplemental indentures. (Section 8.1 of the indenture)

Consolidations, Mergers and Sales of Assets

      The Company may not merge or consolidate with any other corporation or sell or convey all or substantially all of its assets to any person, unless either the Company shall be the continuing corporation or the successor corporation shall be a corporation organized under the laws of the United States or any state

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Defeasance

      The indenture provides that, unless the terms of any series of debt securities provide otherwise, the Company will be discharged from obligations in respect of the outstanding debt securities of any series and the provisions of the indenture with respect thereto (excluding certain obligations, such as obligations to register the transfer or exchange of such outstanding debt securities, to replace stolen, lost or mutilated certificates or coupons and to hold moneys for payment in trust) upon the irrevocable deposit, in trust, of cash or U.S. government obligations (as defined in the indenture) which, through the payment of interest and the principal thereof in accordance with their terms, will provide cash in an amount sufficient to pay the principal of and premium, if any, and interest on and mandatory sinking fund payments, if any, in respect of all outstanding debt securities of such series on the stated dates such payments are due in accordance with the terms of the indenture and such outstanding debt securities, provided that the Company has received an opinion of counsel to the effect that such a discharge will not be deemed, or result in, a taxable event with respect to holders of such outstanding debt securities and that certain other conditions are met. (Section 10.1(B) of the indenture)

Satisfaction and Discharge

      The indenture will cease to be of further effect and the trustee, on demand of and at the expense of the Company, will execute appropriate instruments acknowledging the satisfaction and discharge of the indenture upon compliance with certain enumerated conditions, including:

	•	the Company having paid all sums payable by the Company under the indenture, as and when the same shall be due and payable,
	•	the Company shall have delivered to the trustee for cancellation all debt securities theretofore authenticated under the indenture, or
	•	all debt securities not theretofore delivered to the trustee for cancellation shall have become due and payable or are by their terms to become due and payable within one year and the Company shall have deposited with the trustee sufficient cash or U.S. government obligations which, through the payment of principal and interest thereon in accordance with their terms, will provide sufficient cash to pay, at maturity or upon redemption, all debt securities of any series outstanding under the indenture. (Section 10.1(A) of the indenture)

Governing Law

      The debt securities and the indenture will be governed by the laws of the State of New York. (Section 11.8 of the indenture)

Concerning the Trustee

      The Company entered into the indenture with The First National Bank of Boston, as trustee (“FNBB”), pursuant to which the Company may issue one or more series of its debt securities. Effective October 2, 1995, State Street Bank and Trust Company acquired the trust business of FNBB, and, as a result, State Street Bank and Trust Company became and is currently the trustee under the indenture. State Street Bank and Trust Company may from time to time make loans to the Company, and various subsidiaries of the Company may participate in loan syndications or other investments offered by State Street Bank and Trust Company from time to time, in the normal course of business. In addition, an affiliate of State Street Bank and Trust Company manages the Company’s domestic equity investment portfolio, which is correlated to a nationally recognized broad based index. State Street Bank and Trust Company also serves as trustee for the Company’s

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PLAN OF DISTRIBUTION

      The Company may sell the debt securities being offered hereby (1) through agents, (2) through underwriters, (3) through dealers or (4) directly to one or more purchasers. The prospectus supplement with respect to a particular offering of debt securities will set forth the terms of the offering of such debt securities, including the name or names of the specific agents, dealers or underwriters (including managing underwriters, if any), the purchase price and the proceeds to the Company from such sales, any underwriting discounts, agency fees or commissions and other items constituting compensation to the underwriters, agents or dealers, initial public offering price, any discounts or concessions to be allowed or reallowed or paid to dealers, the securities exchange, if any, on which such debt securities may be listed, and the place and time of delivery of the debt securities offered.

      Debt securities may be offered and sold through agents that we may designate from time to time. Unless otherwise indicated in the applicable prospectus supplement, any such agent will be acting on a best efforts basis for the period of its appointment. Any such agent may be deemed to be an underwriter, as that term is defined in the Securities Act, of any debt securities so offered and sold. Agents may be entitled under agreements which may be entered into with the Company to indemnification by the Company against certain liabilities, including liabilities under the Securities Act of 1933 (the “Securities Act”), and may be customers of, engage in transactions with, or perform services for, the Company in the ordinary course of business.

      If an underwriter or underwriters are utilized in the sale of any debt securities, the Company will execute an underwriting agreement with such underwriter or underwriters at the time an agreement for such sale is reached. Such underwriter or underwriters will acquire debt securities for their own account and may resell such debt securities from time to time in one or more transactions, including negotiated transactions, at fixed public offering prices or at varying prices determined at the time of sale. Debt securities may be offered to the public either through underwriting syndicates represented by managing underwriters or by underwriters without a syndicate. The underwriters may be entitled, under the relevant underwriting agreement, to indemnification by the Company against certain liabilities, including liabilities under the Securities Act. If any underwriter or underwriters are utilized in the sale of any debt securities, unless otherwise set forth in the applicable prospectus supplement, the underwriting agreement will provide that the obligations of the underwriters will be subject to certain conditions precedent and that the underwriters with respect to a sale of such debt securities will be obligated to purchase all such debt securities if any are purchased.

      If a dealer is utilized in the sale of any debt securities in respect of which this prospectus is delivered, the Company will sell such debt securities to the dealer, as principal. The dealer may then resell such debt securities to the public at varying prices to be determined by such dealer at the time of resale. Any such dealer may be deemed to be an underwriter, as such term is defined in the Securities Act, of the debt securities so offered and sold. Dealers may be entitled, under agreements which may be entered into with the Company, to indemnification by the Company against certain liabilities, including liabilities under the Securities Act. The name of any such dealer and the terms of the transaction will be set forth in a prospectus supplement relating thereto.

      Offers to purchase debt securities may be solicited directly by the Company and sales thereof may be made by the Company directly to institutional investors or others, who may be deemed to be underwriters within the meaning of the Securities Act with respect to any sale thereof. The terms of any such sales will be described in a prospectus supplement relating thereto.

      The place and time of delivery of the debt securities in respect of which this prospectus is delivered will be set forth in an accompanying prospectus supplement.

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LEGAL MATTERS

      Unless otherwise indicated in a prospectus supplement relating to the debt securities, certain legal matters in connection with the debt securities will be passed upon for the Company by Baker & Hostetler LLP, Cleveland, Ohio. Certain legal matters in connection with the debt securities offered hereby will be passed upon for any purchasers, dealers, underwriters or agents by Davis Polk & Wardwell, New York, New York. Davis Polk & Wardwell may rely as to all matters of Ohio law on the opinion of Baker & Hostetler LLP, and Baker & Hostetler LLP may rely as to all matters of New York law on the opinion of Davis Polk & Wardwell. Davis Polk & Wardwell may represent the Company from time to time in connection with certain legal matters.

EXPERTS

      The consolidated financial statements and financial statement schedules of The Progressive Corporation and subsidiaries as of December 31, 2000 and 1999, and for each of the three years in the period ended December 31, 2000, all incorporated by reference in the registration statement of which this prospectus forms a part, have been incorporated herein in reliance on the reports of PricewaterhouseCoopers LLP, independent accountants, given on the authority of that firm as experts in accounting and auditing.

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Table of Contents

          No dealer, salesperson or other person is authorized to give any information or to represent anything not contained in this prospectus. You must not rely on any unauthorized information or representations. This prospectus is an offer to sell only the Notes offered hereby, but only under circumstances and in jurisdictions where it is lawful to do so. The information contained in this prospectus is current only as of its date.

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TABLE OF CONTENTS

		Page
Where You Can Find More Information; Incorporation By Reference			S-2
The Progressive Corporation			S-3
Use of Proceeds			S-4
Capitalization			S-4
Ratio of Earnings to Fixed Charges			S-4
Selected Consolidated Financial Information			S-5
Description of Notes			S-7
Underwriting			S-12

Prospectus

About This Prospectus			2
Where You Can Find More Information; Incorporation By Reference			2
The Progressive Corporation			3
Use of Proceeds			4
Ratio of Earnings to Fixed Charges			4
Description of Debt Securities			4
Plan of Distribution			9
Legal Matters			10
Experts			10

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$350,000,000

The Progressive Corporation

       % Senior Notes

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PROSPECTUS SUPPLEMENT

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Goldman, Sachs & Co.

Credit Suisse First Boston

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