OCAS Ohio Casualty (MM)

Ohio Casualty Corporation (Nasdaq:OCAS) announced today that Chief Executive Officer Dan R. Carmichael, CPCU, will speak at the 2006 Wachovia Securities Nantucket Equity Conference in Nantucket, MA, on Wednesday, June 21, 2006 at 2:00 p.m. EDT. The presentation will be transmitted live on the Internet. To participate, log on to the Corporation Website at http://www.ocas.com and follow the link to register for the conference. (Available the day of the conference.) Or participants may go to http://www.wsw.com/webcast/wa36/ocas. Participants will need to register 15 minutes in advance of the presentation. An archived version of the presentation will be available at the Corporation's Website under Financial Information/Financial Presentations following the event. A replay of the Webcast will be available for 90 days at http://www.wsw.com. Corporate Profile Ohio Casualty Corporation is the holding company of The Ohio Casualty Insurance Company, which is one of six property-casualty subsidiary companies that make up Ohio Casualty Group(R). The Ohio Casualty Insurance Company was founded in 1919 and is licensed in 49 states. Ohio Casualty Group is ranked 47th among U.S. property/casualty insurance groups based on net premiums written (Best's Review, July 2005). 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 March 31, 2006.