OCAS Ohio Casualty (MM)

Ohio Casualty Corporation (NASDAQ:OCAS) announced today that it will Webcast its Special Shareholders Meeting. The meeting will be held at 9:00 a.m. August 8, 2007, in the Ohio Casualty University Auditorium at the Corporate Headquarters, 9450 Seward Road, Fairfield, Ohio. The main agenda item is a proposal to adopt the Agreement and Plan of Merger, dated May 6, 2007, among Liberty Mutual Insurance Company, Waterfall Merger Corp. and Ohio Casualty Corporation. The meeting is being Webcast by Vcall and can be accessed at Ohio Casualty Corporation's Website at www.ocas.com. The Webcast is also being distributed over PrecisionIR�s Investor Distribution Network to both institutional and individual investors. Investors can listen to the call through PrecisionIR�s Webcast site at www.InvestorCalendar.com or by visiting any of the investor sites in PrecisionIR�s Investor Network. The Webcast will be available for replay through September 8, 2007. To access the archived event, visit www.InvestorCalendar.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, 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 2007). 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 $5.7 billion as of June 30, 2007. Additional information and where to find it This communication may be deemed to be solicitation material in respect of the proposed transaction. In connection with the proposed transaction, a proxy statement with appendices was filed with the SEC on June 29, 2007. WE URGE INVESTORS TO READ THE PROXY STATEMENT AND APPENDICES CAREFULLY BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT OHIO CASUALTY CORPORATION AND THE PROPOSED TRANSACTION.