Exhibit 32.2




                               CERTIFICATION




I, Michael A. Winner, Executive Vice President and Chief Financial Officer
of Ohio Casualty Corporation (the "Company"), certify, pursuant to Section
906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

      1.  The Quarterly Report on Form 10-Q of the Company for the period
          ended March 31, 2007 (the "Report") fully complies with the
          requirements of Section 13(a) of the Securities; Exchange Act of
          1934 (15 U.S.C. 78m); and

      2.  The information contained in the Report fairly presents, in all
          material respects, the financial condition and result of operations
          of the Company.






Dated:  May 9, 2007           /s/Michael A. Winner
                              ------------------------------------------
                              Name:  Michael A. Winner
                              Title:  Executive Vice President and
                                        Chief Financial Officer




A signed original of this written statement required by Section 906 has
been provided to the Company and will be retained by the Company and
furnished to the Securities and Exchange Commission or its staff upon
request.