Exhibit 31.2

				CERTIFICATION



I, Michael A. Winner, certify that:

     1.  I have reviewed this quarterly report on Form 10-Q of Ohio Casualty
	 Corporation;

     2.  Based on my knowledge, this report does not contain any untrue
	 statement of a material fact or omit to state a material fact
	 necessary to make the statements made, in light of the circumstances
	 under which such statements were made, not misleading with respect to
	 the period covered by this report;

     3.  Based on my knowledge, the financial statements, and other financial
	 information included in this report, fairly present in all material
	 respects the financial condition, results of operations and cash
	 flows of the registrant as of, and for, the periods presented in this
	 report;

     4.  The registrant's other certifying officer(s) and I are responsible
	 for establishing and maintaining disclosure controls and procedures
	 (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the
	 registrant and have:

	    (a)  Designed such disclosure controls and procedures, or
	    caused such disclosure controls and procedures to be designed
	    under our supervision, to ensure that material information
	    relating to the registrant, including its consolidated
	    subsidiaries, is made known to us by others within those
	    entities, particularly during the period in which this report
	    is being prepared;

	    (b)  Evaluated the effectiveness of the registrant's disclosure
	    controls and procedures and presented in this quarterly report
	    our conclusions about the effectiveness of the disclosure
	    controls and procedures, as of the end of the period covered by
	    this report based on such evaluation; and

	    (c)  Disclosed in this report any change in the registrant's
	    internal control over financial reporting that occurred during
	    the registrant's most recent fiscal quarter (the registrant's
	    fourth fiscal quarter in the case of an annual report) that has
	    materially affected, or is reasonably likely to materially
	    affect, the registrant's internal control over financial
	    reporting; and

     5.  The registrant's other certifying officer(s) and I have disclosed,
	 based on our most recent evaluation, of internal control over
	 financial reporting, to the registrant's auditors and the audit
	 committee of the registrant's board of directors (or persons
	 performing the equivalent functions):

	    (a) All significant deficiencies and material weaknesses in the
	    design or operation of internal control over financial reporting
	    which are reasonably likely to adversely affect the registrant's
	    ability to record, process, summarize and report financial
	    information; and

	    (b) Any fraud, whether or not material, that involves management
	    or other employees who have a significant role in the
	    registrant's internal control over financial reporting.



Date:  November 2, 2004                         /s/Michael A. Winner
						---------------------------
						Michael A. Winner
						Executive Vice President and
						Chief Financial Officer