Exhibit 99.1
PRESS RELEASE
BUSINESS AND FINANCIAL EDITORS | WILLIAM J. OWEN |
FOR IMMEDIATE RELEASE | Senior Vice President, |
| Investor Relations |
| 818-676-3936 |
ZENITH DECLARES QUARTERLY DIVIDEND
WOODLAND HILLS, CALIFORNIA, May 13, 2008 . . .. . . . .. . . .. . . .. . . .. Zenith National Insurance Corp. (NYSE:ZNT) today declared a regular quarterly cash dividend of $0.50 per share on its outstanding shares of common stock. The dividend is payable August 14, 2008 to stockholders of record at the close of business on July 31, 2008.
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