Zenith Declares Quarterly Dividend

Zenith National Insurance Corp. (NYSE:ZNT - News) today declared a regular quarterly cash dividend of $0.42 per share on its outstanding shares. The dividend is payable August 14, 2007 to stockholders of record at the close of business on July 31, 2007.

Source: Source: Zenith National Insurance Corp. | Published on May 24, 2007

Contact:

Zenith National Insurance Corp.

Stanley R. Zax, Chairman & President, 818-713-1000