1                       
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C.  20549
                             -----------------------

                                   FORM 8-A/A
                                 AMENDMENT NO. 3

                Amending Form 8-A Filed December 19, 1989, as amended by
                            Form 8 Filed November 7, 1990
                         and Form 8-A/A Filed April 6, 1994

                  FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                      PURSUANT TO SECTION 12(b) OR (g) OF THE
                          SECURITIES EXCHANGE ACT OF 1934

                             OHIO CASUALTY CORPORATION
- ------------------------------------------------------------------------------
                (Exact name of registrant as specified in its charter)


                 Ohio                                          31-0783294
- ---------------------------------------                    -------------------
(State of incorporation or organization                     (I.R.S. Employer
                                                           Identification No.)



136 North Third Street, Hamilton, Ohio                            45025   
- ---------------------------------------                     ------------------
(Address of principal executive offices)                        (ZIP Code)


Securities to be registered pursuant to Section 12(b) of the Act:


                                                Name of each exchange on which
Title of each class registered                  each class is registered
- ------------------------------                  ------------------------------

             None                                       Not Applicable

Securities to be registered pursuant to Section 12(g) of the Act:

                           Common Stock Purchase Rights
                           ----------------------------
                                 (Title of Class)



                                 Page 1 of 118 Pages


     2
          This Form 8-A/A amends and supplements the Form 8-A filed by Ohio 
Casualty Corporation (the "Company") with the Securities and Exchange 
Commission ("SEC") on December 19, 1989, as previously amended by the Form 8 
filed with the SEC on November 7, 1990, and the Form 8-A/A filed with the SEC 
on April 6, 1994, with respect to Common Share Purchase Rights (the "Form 8-
A").

Item 1.  Description of Securities to be Registered.
         -------------------------------------------
            Item 1 of the Form 8-A is amended by substituting the following:

          On December 15, 1989, the Board of Directors of Ohio Casualty 
Corporation (the "Company") declared a dividend distribution of one Right for 
each outstanding common share, par value twelve and one-half cents ($0.125) 
per share (the "Common Stock"), of the Company to shareholders of record at 
the close of business on December 29, 1989.  On February 17, 1994, the Board 
of Directors of the Company authorized an adjustment of the Rights associated 
with each share of Common Stock in connection with a 2-for-1 share split with 
the result that each share of Common Stock outstanding following such share 
split is accompanied by one-half of one Right.  The exercise price of one 
whole Right was reduced in connection with such share split from $150 per 
share to $75 per share.  The Rights were issued upon the terms and subject to 
the conditions set forth in a Rights Agreement, dated as of December 15, 1989, 
as amended on February 28, 1990, October 17, 1990, April 1, 1994, and June 8, 
1995, between the Company and First Chicago Trust Company of New York (as 
successor rights agent to Mellon Bank, N.A.) (the "Prior Rights Agreement").  
First Chicago Trust Company of New York is hereafter referred to herein as the 
"Rights Agent."

          On February 19, 1998, the Board of Directors of the Company adopted 
amendments to the Prior Rights Agreement (the "Amendments"), which are 
incorporated in an Amended and Restated Rights Agreement (the "Rights 
Agreement"), dated as of February 19, 1998, between the Company and First 
Chicago Trust Company of New York, as Rights Agent, which supersedes the Prior 
Rights Agreement.  A copy of the Rights Agreement is attached as an exhibit 
hereto and is incorporated herein by reference.


                                Page 2 of 118 Pages


     3

          As of the date hereof, there is associated with each outstanding 
share of Common Stock one-half of one Right.  Except as set forth in the 
Rights Agreement, each whole Right, when exercisable, entitles the registered 
holder to purchase from the Company one share of Common Stock at a price of 
$250.00 per share, subject to adjustment.

          The following is a summary of the terms of the Rights as set forth 
in the Rights Agreement:

          The Rights (or fractional Rights) are attached to all Common Stock 
certificates representing outstanding shares, and no separate Right 
certificates have been distributed.  Until the earlier to occur of (i) the 
close of business on the tenth business day after the first date of a public 
announcement (the "Stock Acquisition Date") that, without the prior approval 
of the Company's Board of Directors, a person or group of affiliated or 
associated persons (an "Acquiring Person") has acquired, or obtained the right 
to acquire, beneficial ownership of 20% or more of the outstanding shares of 
Common Stock of the Company or (ii) the close of business on the tenth 
business day (or such later date and time as may be determined by action of 
the Board of Directors prior to such time as any Person becomes an Acquiring 
Person) after the commencement of (or a public announcement of an intention to 
make) a tender offer or exchange offer which would result in any person or 
group of related persons becoming an Acquiring Person (the earlier of (i) and 
(ii) above being called the "Distribution Date"), the Rights will be evidenced 
by the Common Stock certificates and not by separate Right certificates.

          The following persons are excluded from the definition of Acquiring 
Person:  the Company or any subsidiary of the Company, any employee benefit 
plan of the Company or any subsidiary or any entity holding shares of Common 
Stock organized, appointed or established by the Company or a subsidiary for 
or pursuant to any such plan, and Joseph L. Marcum and any Affiliate or 
Associate of Joseph L. Marcum.  No person shall become an Acquiring Person as 
the result of an acquisition of Common Stock by the Company or as a result of 
having received Common Stock through a gift, bequest, inheritance or by 
operation of law upon the death of an individual; provided, however, that if a 
Person 


                               Page 3 of 118 Pages


     4

becomes the beneficial owner of 20% or more of the shares of Common Stock of 
the Company by reason of shares purchased by the Company or any such gift, 
bequest or inheritance and, after such time, becomes the beneficial owner of 
additional shares while such Person is a beneficial owner of 20% or more of 
the shares of Common Stock then outstanding, then such person will be deemed 
to be an Acquiring Person (unless such acquisition has been approved by the 
Board of Directors).  The Rights Agreement provides that, in the event a 
person shall become an Acquiring Person inadvertently, and such person divests 
as promptly as practicable a sufficient number of shares so that such person 
would no longer be an Acquiring Person, then such person shall not be deemed 
an Acquiring Person.  The Rights Plan also provides that neither First 
Financial Bancorp., Hamilton, Ohio, nor any officer, director, employee, 
Affiliate or Associate of First National Bancorp. or of any Affiliate of First 
National Bancorp. shall be deemed a beneficial owner of Common Stock which is 
held by First Financial Bancorp. or any of its Affiliates in a fiduciary or 
custodial capacity, other than shares as to which any such excluded person has 
an actual ownership interest.

          The Rights Agreement provides that, until the Distribution Date, the 
Rights will be transferred with and only with Common Stock certificates.  
Until the Distribution Date (or earlier redemption or expiration of the 
Rights), new Common Stock certificates issued upon transfer or new issuance of 
the Common Stock will contain a notation incorporating the Rights Agreement by 
reference.  Until the Distribution Date (or earlier redemption or expiration 
of the Rights), the surrender for transfer of any certificates for Common 
Stock (with or without a Summary of Rights attached) will also constitute the 
transfer of the Rights (or fractional Rights) associated with the Common Stock 
represented by such certificate. As soon as practicable following the 
Distribution Date, separate certificates evidencing the Rights ("Rights 
Certificates") will be mailed to holders of record of the Common Stock as of 
the Distribution Date, and the separate Rights Certificates alone will 
evidence the Rights.

          The Rights are not exercisable until the Distribution Date.  The 
Rights will expire on the earlier of (i) December 15, 2009, or (ii) the date 
of redemption by the Company as described below.


                                Page 4 of 118 Pages


     5

          The Purchase Price payable, and the number of shares of Common Stock 
or other securities or property issuable, upon exercise of the Rights are 
subject to adjustment from time to time (i) in the event of a stock dividend 
on, or a subdivision, combination or reclassification of, the Common Stock, 
(ii) upon the grant to holders of the Common Stock of certain rights or 
warrants to subscribe for Common Stock, certain convertible securities or 
securities having the same or more favorable rights, privileges and 
preferences as the Common Stock at less than the current market price of the 
Common Stock or (iii) upon the distribution to holders of the Common Stock of 
evidences of indebtedness or assets (excluding regular quarterly cash 
dividends out of earnings or retained earnings and dividends payable in Common 
Stock ) or of subscription rights or warrants (other than those referred to 
above).  In addition to or in lieu of any such adjustments, the Board of 
Directors has the authority to make such adjustments to the exercise price of 
the Rights, the number of shares of Common Stock eligible for purchase on 
exercise of each Right or the number of Rights outstanding as it deems 
appropriate in the circumstances and not inconsistent with the objectives of 
the Board in adopting the Rights Agreement.

           In the event that, following the Stock Acquisition Date, the 
Company is involved in a merger or consolidation (other than a merger or 
consolidation which would result in all of the voting power represented by the 
securities of the Company outstanding prior thereto continuing to represent 
all of the voting power of the surviving company and the holders of such 
securities not having changed as a result thereof), or 50% or more of the 
assets or earning power of the Company and its subsidiaries are sold (in one 
transaction or a series of transactions), proper provision shall be made so 
that each holder of a whole Right shall thereafter have the right to receive 
(unless the Rights have been redeemed as described below) upon the exercise 
thereof at the then-current exercise price of the whole Right, that number of 
shares of common stock of the acquiring company (or, in the event there is 
more than one acquiring company, the acquiring company receiving the greatest 
portion of the assets or earning power transferred) which at the time of such 
transaction would have a market value of two times the exercise price of the 
Right (such right being called the "Merger Right").


                               Page 5 of 118 Pages


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          In the event that a person becomes an Acquiring Person, proper 
provision shall be made so that each holder of a whole Right will, for a 60-
day period commencing on the eleventh business day after the Stock Acquisition 
Date (or for a period of 60 days following the effective date of the relevant 
registration statement), have the right to receive (unless the Rights have 
been redeemed as described below) upon exercise thereof at the then-current 
exercise price of the Right that number of shares of Common Stock of the 
Company having a market value of two times the exercise price of the Right, to 
the extent sufficient shares are legally available therefor, and then (after 
all legally available shares of Common Stock have been issued) a common stock 
equivalent (such as preferred stock, if then authorized and legally available 
therefor, or another equity security with at least the same economic value as 
the common), having a market value of two times the exercise price of the 
Right, with Common Stock to the extent available being issued first (such 
right being called the "Subscription Right").  If the Company is unable to 
cause sufficient shares of Common Stock and/or common stock equivalents to be 
available for issuance upon exercise of the Rights, each Right shall 
thereafter represent the right to receive an adjusted number of shares of 
Common Stock and/or common stock equivalents at an adjusted purchase price, 
such adjustments to be made in accordance with the Rights Agreement.  The 
holder of a Right will continue to have the Merger Right whether or not such 
holder exercises the Subscription Right.

          Upon the occurrence of any of the events giving rise to the 
exercisability of the Subscription Right or the Merger Right, any Rights 
(including fractional Rights) that are or were beneficially owned by an 
Acquiring Person on or after the earlier of the Distribution Date or the Stock 
Acquisition Date shall become void insofar as they relate to the Subscription 
Right or the Merger Right and any holder of such Rights will have no right to 
exercise such Rights insofar as they relate to the Subscription Right or the 
Merger Right.


                               Page 6 of 118 Pages


     7

          With certain exceptions, no adjustments in the Purchase Price will 
be required until cumulative adjustments require an adjustment of at least 1% 
in such Purchase Price.  No fractions of shares will be issued and, in lieu 
thereof, an adjustment in cash will be made based on the market price of the 
Common Stock on the last trading date prior to the date of exercise.

          At any time prior to the earlier to occur of (i) the close of 
business on the tenth business day after the Stock Acquisition Date or (ii) 
the close of business on the date of expiration of the Rights, the Company may 
redeem the Rights in whole, but not in part, at a price of $0.01 per whole 
Right (the "Redemption Price"), which redemption shall be effective upon the 
action of the Board of Directors of the Company.  Additionally, the Company 
may thereafter redeem the then-outstanding Rights in whole, but not in part, 
at the Redemption Price following an event giving rise to, and the expiration 
of the exercise period for, the Subscription Right if and for as long as no 
person beneficially owns 20% or more of the outstanding shares of Common Stock 
of the Company.  Upon the effective date of the redemption of the Rights, the 
right to exercise the Rights will terminate and the only right of the holders 
of Rights will be to receive the Redemption Price.

          The terms of the Rights may be amended by the Company and the Rights 
Agent without the consent of the holders of the Rights, including an amendment 
to lower the threshold for exercisability of the Rights from 20% to not less 
than the greater of (i) any percentage greater than the largest percentage of 
the outstanding shares of Common Stock then known to the Company to be 
beneficially owned by any person or group of affiliated or associated persons 
and (ii) 10%, except that from and after the Distribution Date, no such 
amendment may adversely affect the interests of the holders of the Rights.

          Until a Right is exercised, the holder thereof, as such, will have 
no rights as a stockholder of the Company, including, without limitation, the 
right to vote or to receive dividends.



                                Page 7 of 118 Pages

     8

          A copy of the Rights Agreement has been filed with the Securities 
and Exchange Commission (the "Commission") as an Exhibit to a Current Report 
on Form 8-K.  A copy of the Rights Agreement is available free of charge from 
the Company.  This summary description of the Rights does not purport to be 
complete and is qualified in its entirety by reference to the Rights 
Agreement, which is incorporated herein by reference.






                               Page 8 of 118 Pages

     9

Item 2.  Exhibits.
         ---------

          Item 2 is hereby amended in its entirety as follows:

Exhibit No.    Description                              Page No.
- -----------    -----------                              --------

  4a, 4b       Rights Agreement dated as of             Filed as Exhibit to 
               December 15, 1989, between               the Ohio Casualty
               Ohio Casualty Corporation                Corporation Form 8-A
               and Mellon Bank, N.A., which             dated December 15,
               includes as Exhibit A the form           1989, filed with SEC
               of Right Certificate                     on December 19, 1989

     4c        First Supplement to Rights               Filed as an Exhibit
               Agreement dated as of                    to a Form 8 Amend-
               February 28, 1990                        ment to the Ohio
                                                        Casualty Corporation
                                                        Form 8-A, which 
                                                        amendment was dated 
                                                        October 30, 1990, 
                                                        and was filed with 
                                                        the SEC on November 7,
                                                        1990

     4d        Second Supplement to Rights              Filed as an Exhibit
               Agreement dated as of                    to a Form 8 Amend-
               October 17, 1990                         ment to the Ohio
                                                        Casualty Corporation
                                                        Form 8-A, which amend-
                                                        ment was dated 
                                                        October 30, 1990, 
                                                        and was filed with 
                                                        the SEC on November 7,
                                                        1990
     
     4e        Conformed copy of Third                  Filed as Exhibit to
               Supplement to Rights Agree-              a Form 8-A/A dated
               ment dated as of March 15,               April 1, 1994, and
               1994                                     filed with the SEC
                                                        on April 16, 1994



                               Page 9 of 118 Pages


     10

     4f        Amended and Restated Rights                      13
               Agreement dated as of 
               February 19, 1998, between
               Ohio Casualty Corporation
               and First Chicago Trust Company
               of New York, as Rights Agent,
               which includes as Exhibit A
               the form of Rights Certificate

     99.1      Letter sent to the shareholders          Filed as Exhibit to
               of Ohio Casualty Corporation             the Ohio Casualty
               with regard to the adoption              Corporation Form 8-A
               of the Rights Agreement and              dated December 15,
               the issuance of the Rights               1989, filed with SEC
                                                        on December 19, 1989


     99.2      Certificate of Adjustment                Filed as Exhibit to
               by the Company dated as of               a Form 8-A/A dated
               April 1, 1994                            April 1, 1994, and
                                                        filed with the SEC
                                                        on April 16, 1994




                                    SIGNATURE

          Pursuant to the requirements of Section 12 of the Securities 
Exchange Act of 1934, the registrant has duly caused this Amendment to 
Registration Statement to be signed on its behalf by the undersigned, thereto 
duly authorized.

                           OHIO CASUALTY CORPORATION



Date:  February 19, 1998                By:  /s/ Lauren N. Patch 
                                             -----------------------------
                                             Its President and Chief Executive
                                             Officer


                                Page 10 of 118 Pages


     11

                                INDEX TO EXHIBITS

Exhibit No.       Description                           Page No.
- -----------       -----------                           --------

  4a, 4b       Conformed copy of Rights Agreemen        Filed as Exhibit to 
               dated as of December 15, 1989,           the Ohio Casualty
               between Ohio Casualty Corporation        Corporation Form 8-A
               and Mellon Bank, N.A., which             dated December 15,
               includes as Exhibit A the form           1989, filed with SEC
               of Right Certificate                     on December 19, 1989

     4c        Conformed copy of First Supple-          Filed as an Exhibit
               ment to Rights Agreement dated           to a Form 8 Amend-
               as of February 28, 1990                  ment to the Ohio
                                                        Casualty Corporation
                                                        Form 8-A, which 
                                                        amendment was dated 
                                                        October 30, 1990, 
                                                        and was filed with 
                                                        the SEC on November 7,
                                                        1990

     4d        Conformed copy of Second                 Filed as an Exhibit
               Supplement to Rights Agree-              to a Form 8 Amend-
               ment dated as of October 17,             ment to the Ohio
               1990                                     Casualty Corporation
                                                        Form 8-A, which amend-
                                                        ment was dated 
                                                        October 30, 1990, 
                                                        and was filed with 
                                                        the SEC on November 7,
                                                        1990
     
     4e        Conformed copy of Third                  Filed as Exhibit to
               Supplement to Rights Agree-              a Form 8-A/A dated
               ment dated as of March 15,               April 1, 1994, and
               1994                                     filed with the SEC
                                                        on April 16, 1994



                                Page 11 of 118 Pages
    12

     4f        Amended and Restated Rights                      13
               Agreement dated as of 
               February 19, 1998, between
               Ohio Casualty Corporation
               and First Chicago Trust Company
               of New York, as Rights Agent,
               which includes as Exhibit A
               the form of Rights Certificate

     99.1      Form of letter sent to the               Filed as Exhibit to
               shareholders of Ohio Casualty            the Ohio Casualty
               Corporation with regard to the           Corporation Form 8-A
               adoption of the Rights Agree-            dated December 15,
               ment and the issuance of the             1989, filed with SEC
               Rights                                   on December 19, 1989


     99.2      Certificate of Adjustment                Filed as Exhibit to
               by the Company dated as of               a Form 8-A/A dated
               April 1, 1994                            April 1, 1994, and
                                                        filed with the SEC
                                                        on April 16, 1994


                               Page 12 of 118 Pages