Zenith National Insurance Corp. is a holding company engaged in the property-casualty insurance business through its wholly owned insurance subsidiaries, Zenith Insurance Company, ZNAT Insurance Company and Zenith Star Insurance Company. The Companys business is classified into segments including workers compensation, reinsurance and investment. Workers compensation is Zeniths main insurance activity, supplemented by a smaller-assumed reinsurance operation. In addition, the Company maintains a portfolio of investments, principally in fixed-maturity securities, funded by the cash flows from its insurance operations and capital. In October 2002, the Company sold off its real estate assets and home-building business in Las Vegas, Nevada, to Meritage Corporation.