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                               UNITED STATES
                    SECURITIES AND EXCHANGE COMMISSION
                         Washington, D. C.   20549

                                 FORM 8-K

                              CURRENT REPORT
                    Pursuant to Section 13 or 15(d) of
                    The Securities Exchange Act of 1934

      Date of Report (Date of earliest event reported) April 26, 2006
                                                       --------------

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

             OHIO                   0-5544                 31-0783294
(State or other jurisdiction      (Commission           (IRS Employer
      of incorporation)           File Number)         Identification No.)

                 9450 Seward Road, Fairfield, Ohio  45014
           (Address of principal executive offices)(Zip Code)

                              (513) 603-2400
           (Registrant's telephone number, including area code)

                              Not Applicable
       (Former name or former address, if changed since last report)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of
the following provisions (see General Instruction A.2. below):

[ ]  Written communications pursuant to Rule 425 under the Securities Act
     (17 CFR 230.425)

[ ]  Soliciting material pursuant to Rule l4a-12 under the Exchange Act
     (17 CFR 240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))




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ITEM 2.02. Results of Operations and Financial Condition
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(a)  On April 26, 2006, Ohio Casualty Corporation (the "Corporation") issued
     a press release announcing its earnings for the first quarter ended
     March 31, 2006.  The Corporation also issued on April 26, 2006 certain
     Supplemental Financial Information with respect to its earnings for the
     first quarter ended March 31, 2006.  The press release and the
     Supplemental Financial Information were posted on the Corporation's
     website at http://www.ocas.com and are attached hereto as Exhibits 99.1
     and 99.2, respectively, and hereby incorporated by reference.


ITEM 9.01. Financial Statements and Exhibits
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(c)  Exhibits

     Exhibit No.  Description
     ----------   -----------
        99.1      Press release dated April 26, 2006 issued by Ohio Casualty
                  Corporation and posted on the Corporation's website at
                  http://www.ocas.com.

        99.2      Financial Information issued by Ohio Casualty Corporation
                  on April 26, 2006 and posted on the Corporation's website
                  at http://www.ocas.com.






                                 SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.




                                          OHIO CASUALTY CORPORATION
                                          -------------------------
                                                 (Registrant)




April 26, 2006                            /s/Debra K. Crane
                                          ---------------------------------
                                          Debra K. Crane, Senior Vice
                                           President, General Counsel
                                           and Secretary





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                               Exhibit Index
                               -------------

                        Current Report on Form 8-K
                           Dated April 26, 2006


Exhibit No.   Description
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   99.1       Press release dated April 26, 2006 issued by Ohio Casualty
              Corporation and posted on the Corporation's website at
              http://www.ocas.com.

   99.2       Financial Information issued by Ohio Casualty Corporation on
              April 26, 2006 and posted on the Corporation's website at
              http://www.ocas.com.













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