Zenith National Insurance (ZNT)

3.1

Amended and Restated Certificate of Incorporation of Zenith National Insurance Corp. filed with the Delaware Secretary of State on May 30, 2006.  (Incorporated by reference to Exhibit 3.1 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2006.)

3.2

Bylaws of Zenith National Insurance Corp.  (Incorporated by reference to Exhibit 3.9 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2006.)

31.1

Certification of the Chief Executive Officer pursuant to Exchange Act Rule 13a-14(a) or Rule 15d-14(a), a copy of which certification is filed herewith.

31.2

Certification of the Chief Financial Officer pursuant to Exchange Act Rule 13a-14(a) or Rule 15d-14(a), a copy of which certification is filed herewith.

32

Certification of the Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, a copy of which certification is filed herewith.

99.1

Available-for-sale investment portfolio as of March 31, 2009, a copy of which is filed herewith.

3.1

Certificate of Incorporation of Zenith National Insurance Corp., dated May 28, 1971. (Incorporated herein by reference to Exhibit 3.1 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

3.2

Certificate of Amendment of Certificate of Incorporation of Zenith National Insurance Corp., dated September 12, 1977. (Incorporated herein by reference to Exhibit 3.2 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

3.3

Certificate of Amendment of Certificate of Incorporation of Zenith National Insurance Corp., dated May 31, 1979. (Incorporated herein by reference to Exhibit 3.3 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

3.4

Certificate of Amendment of Certificate of Incorporation of Zenith National Insurance Corp., dated September 6, 1983. (Incorporated herein by reference to Exhibit 3.4 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

3.5

Certificate of Designation of Zenith National Insurance Corp., dated September 10, 1985. (Incorporated herein by reference to Exhibit 3.5 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

3.6

Certificate of Amendment of Certificate of Incorporation of Zenith National Insurance Corp., dated November 22, 1985. (Incorporated herein by reference to Exhibit 3.6 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

3.7

Certificate of Amendment of Certificate of Incorporation of Zenith National Insurance Corp., dated May 19, 1987. (Incorporated herein by reference to Exhibit 3.7 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

3.8

Certificate of Change of Address of Registered Office and of Registered Agent of Zenith National Insurance Corp., dated October 10, 1989. (Incorporated herein by reference to Exhibit 3.8 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

3.9

By-laws of Zenith National Insurance Corp., as currently in effect. (Incorporated herein by reference to Exhibit 3.9 to Zenith’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2002.)

10.1

Zenith National Insurance Corp. Amended and Restated 2004 Restricted Stock Plan as of February 11, 2005. (Incorporated herein by reference to Exhibit 10.1 to Zenith’s Current Report on Form 8-K filed May 18, 2005.)

10.2

Zenith National Insurance Corp. Amended and Restated 2004 Restricted Stock Award Agreement for Non-Employee Directors. (Incorporated herein by reference to Exhibit 10.2 to Zenith’s Current Report on Form 8-K filed May 18, 2005.)

10.3

Zenith National Insurance Corp. Amended and Restated 2004 Restricted Stock Award Agreement for Employees. (Incorporated herein by reference to Exhibit 10.3 to Zenith’s Current Report on Form 8-K filed May 18, 2005.)

11

Statement re: computation of per share earnings. (Note 3 to Consolidated Financial Statements (Unaudited) included in Item 1 of Part I of this Quarterly Report on Form 10-Q is incorporated herein by reference.)

31.1

Certification of the Chairman of the Board and President pursuant to Exchange Rule 13a-14(a) or Rule 15d-14(a).

31.2

Certification of the CFO pursuant to Exchange Rule 13a-14(a) or Rule 15d-14(a).

32

Certification of the CEO and CFO pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002.