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:  July 30, 2004                            /s/Michael A. Winner
						-----------------------------
						Michael A. Winner
						Executive Vice President and
						Chief Financial Officer