Exhibit 99 Contacts: Analyst contact: Dennis E. McDaniel Vice President, Investor Relations 513-603-2197 dennis.mcdaniel@ocas.com Media contact: Cindy L. Denney Assistant Vice President, Corporate Communications (Ofc.) 513-603-2074 Cell: 513-703-7372 cindy.denney@ocas.com For Immediate Release OHIO CASUALTY CORPORATION DECLARES REGULAR DIVIDEND FAIRFIELD, Ohio, November 15, 2006--- The Directors of Ohio Casualty Corporation (NASDAQ: OCAS) declared on November 15, 2006, a regular dividend of $.09 per share, payable December 12, 2006, to shareholders of record on December 1, 2006. Corporate Profile Ohio Casualty Corporation is the holding company of The Ohio Casualty Insurance Company, which is one of six property-casualty insurance companies that make up Ohio Casualty Group, collectively referred to as Consolidated Corporation. The Ohio Casualty Insurance Company was founded in 1919 and is licensed in 49 states. Ohio Casualty Group is ranked among the top 50 U.S. property/casualty insurance groups based on net premiums written (Best's Review, July 2006). The Group's member companies write auto, home and business insurance. Ohio Casualty Corporation trades on the NASDAQ Stock Market under the symbol OCAS and had assets of approximately $5.8 billion as of September 30, 2006. ###