Exhibit 99.1

			   CERTIFICATION PURSUANT TO
		  TITLE 18, UNITED STATES CODE, SECTION 1350,
			     AS ADOPTED PURSUANT TO
		 SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


	In connection with the Annual Report of Ohio Casualty Corporation (the
"Company") on Form 10-K for the fiscal year ending December 31, 2002 as filed
with the Securities and Exchange Commission on the date hereof (the "Report"),
I, Dan R. Carmichael, President and Chief Executive Officer of the Company,
certify, pursuant to Title18, United States Code, Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

		(1)     The Report fully complies with the requirements of
Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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



				       /s/Dan R. Carmichael
				       ------------------------------------
				       Dan R. Carmichael
				       President and Chief Executive Officer
				       March 27, 2003