LETTER 1 filename1.txt Via Facsimile and U.S. Mail Mail Stop 6010 March 9, 2006 Mr. Dan R. Carmichael Chief Executive Officer and Director Ohio Casualty Corporation 9450 Seward Road Fairfield, OH 45014 Re: Ohio Casualty Corporation Form 10-K for Fiscal Year Ended December 31, 2004 File No. 0-05544 Dear Mr. Carmichael: We have completed our review of your Form 10-K and have no further comments at this time. Sincerely, Kevin Woody Branch Chief