SCHEDULE 14A INFORMATION
 
                  Proxy Statement Pursuant to Section 14(a) of
             the Securities Exchange Act of 1934 (Amendment No.  )
 
    Filed by the Registrant /X/
    Filed by a Party other than the Registrant / /
 
    Check the appropriate box:
    / /  Preliminary Proxy Statement
    / /  Confidential, for Use of the Commission Only (as permitted by Rule
         14a-6(e)(2))
    /X/  Definitive Proxy Statement
    / /  Definitive Additional Materials
    / /  Soliciting Material Pursuant to Rule 14a-11(c) or
         Rule 240.14a-12
 
                               ZENITH NATIONAL INSURANCE CORP.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)
 
                               ZENITH NATIONAL INSURANCE CORP.
- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)
 
Payment of Filing Fee (Check the appropriate box):
 
/X/  No fee required.
/ /  Fee   computed  on   table  below   per  Exchange   Act  Rules  14a-6(i)(4)
     and 0-11.
     1) Title of each class of securities to which transaction applies:
        ------------------------------------------------------------------------
     2) Aggregate number of securities to which transaction applies:
        ------------------------------------------------------------------------
     3) Per unit  price  or  other  underlying  value  of  transaction  computed
        pursuant  to Exchange Act Rule  0-11 (Set forth the  amount on which the
        filing  fee   is  calculated   and  state   how  it   was   determined):
        ------------------------------------------------------------------------
     4) Proposed maximum aggregate value of transaction:
        ------------------------------------------------------------------------
     5) Total fee paid:
        ------------------------------------------------------------------------
/ /  Fee paid previously with preliminary materials:
     ---------------------------------------------------------------------------
/ /  Check box if any part of the fee is offset as provided by Exchange Act Rule
     0-11(a)(2)  and identify the  filing for which the  offsetting fee was paid
     previously. Identify the previous filing by registration statement  number,
     or the Form or Schedule and the date of its filing.
     1) Amount Previously Paid:
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     2) Form, Schedule or Registration Statement No.:
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     4) Date Filed:
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                                                            [LOGO]
                                              Zenith National Insurance Corp.
                                              21255 Califa Street
                                              Woodland Hills, California 91367
                                              Telephone (818) 713-1000
    NOTICE OF ANNUAL MEETING
- --------------------------------------------------------------------------------
 
    The  Annual  Meeting  of  Stockholders of  Zenith  National  Insurance Corp.
("Zenith") will be held at the offices of Zenith, 21255 Califa Street,  Woodland
Hills,  California, on Thursday, May  15, 1997, at 9:00  a.m., for the following
purposes:
 
    1.  To elect a Board of nine (9) Directors.
 
    2.  To transact such other business as may properly come before the  meeting
       and any adjournments thereof.
 
    Stockholders  of record  at the  close of  business on  March 24,  1997, the
record date fixed by the Board of Directors for the Annual Meeting, are entitled
to notice of, and to vote at, such meeting.
 
                                          By Order of the Board of Directors
 
                                          John J. Tickner
                                          SECRETARY
Woodland Hills, California
Dated: March 25, 1997
 
    STOCKHOLDERS, WHETHER OR NOT  THEY EXPECT TO ATTEND  THE MEETING IN  PERSON,
ARE  REQUESTED TO COMPLETE, DATE, SIGN AND  RETURN THE ENCLOSED FORM OF PROXY IN
THE ACCOMPANYING POSTPAID AND ADDRESSED ENVELOPE. THE PROXY IS REVOCABLE AT  ANY
TIME PRIOR TO THE EXERCISE THEREOF BY WRITTEN NOTICE TO ZENITH, AND STOCKHOLDERS
WHO  ARE PRESENT AT THE MEETING MAY WITHDRAW THEIR PROXIES AND VOTE IN PERSON IF
THEY SO DESIRE.

                        ZENITH NATIONAL INSURANCE CORP.
                              21255 Califa Street,
                        Woodland Hills, California 91367
 
                            ------------------------
 
                                PROXY STATEMENT
 
                            ------------------------
 
                                     VOTING
 
    This Proxy Statement is furnished in connection with the solicitation by the
Board  of Directors of Zenith National  Insurance Corp. ("Zenith") of proxies to
be voted at the Annual Meeting of Stockholders of Zenith to be held on Thursday,
May 15,  1997,  at 9:00  a.m.,  and at  any  adjournments thereof  (the  "Annual
Meeting").  Any proxy given pursuant to this  solicitation may be revoked at any
time prior  to  its  exercise by  written  notice  to Zenith,  and  the  persons
executing  the same, if in attendance at  the Annual Meeting, may vote in person
instead of by proxy. Unless authority therefor is withheld, all proxies will  be
voted  as  provided therein.  In addition  to solicitation  of proxies  by mail,
officers and regular employees of Zenith and its subsidiaries, who will  receive
no  additional compensation therefor, may solicit proxies by telephone, telegram
or personal interview. The subsidiaries  of Zenith are Zenith Insurance  Company
("Zenith  Insurance"), CalFarm  Insurance Company  ("CalFarm"), Cal-Ag Insurance
Services, Inc.,  CalFarm  Annuity  Service Company,  CalFarm  Insurance  Agency,
CalFarm   Properties,  Inc.,  CalRehab  Services,  Inc.,  Perma-Bilt,  a  Nevada
Corporation, Zenith Star  Insurance Company, Zenith  Risk Management, Inc.,  ZIC
Lloyd's  Underwriting  Limited, and  ZNAT Insurance  Company.  The cost  of this
solicitation will  be  borne  by  Zenith. In  addition,  Zenith  will  reimburse
brokerage  houses and  other custodians,  nominees and  fiduciaries for expenses
incurred in forwarding solicitation materials to stockholders.
 
    The approximate date on which this Proxy Statement and accompanying form  of
proxy are first being sent to stockholders is March 28, 1997.
 
    Only  stockholders of record at the close of business on March 24, 1997, the
record date for the Annual Meeting  (the "Record Date"), are entitled to  notice
of  and to vote at such meeting. On such date, Zenith had outstanding 17,667,344
shares of common  stock, $1.00 par  value per share  (the "Common Stock").  Each
share of Common Stock entitles the record holder at such time to one vote on all
matters.  With  respect  to  the  election  of  Directors  only,  however, every
stockholder may cumulate his votes with  respect to candidates whose names  have
been placed in nomination prior to the vote if, but only if, any stockholder has
given  notice at the Annual Meeting prior to voting of his intention to cumulate
his votes.  In  the  event  there  is  cumulative  voting  for  Directors,  each
stockholder  will be entitled to give one candidate the number of votes equal to
the number of Directors to be elected multiplied by the number of votes to which
the stockholder's shares are  entitled, or to distribute  his votes on the  same
principle  among as many candidates as such stockholder thinks fit. In the event
the election of Directors  is to proceed with  cumulative voting, the holder  of
any  proxy  given  pursuant to  this  solicitation  will have  the  authority to
cumulate the votes  to which shares  covered by  the proxy are  entitled and  to
distribute  the votes  among the  candidates for election  as the  holder of the
proxy sees fit. The presence, in person  or by proxy, of stockholders holding  a
majority  of the issued and outstanding shares  of Common Stock entitled to vote
shall constitute a quorom. Election of  Directors shall be decided by  plurality
vote.  Other matters submitted for  stockholder approval require the affirmative
vote
 
                                       1

of the majority  of shares  present in  person or  represented by  proxy at  the
meeting  and  entitled to  vote on  the subject  matter. Abstentions  and broker
non-votes (except on matters for  which brokers lack discretionary authority  to
vote under New York Stock Exchange rules) will be counted and will have the same
effect as "no" votes.
 
    The Board of Directors knows of no matters to come before the Annual Meeting
other  than the matters  referred to in  this Proxy Statement.  If, however, any
matters properly come before  the meeting, it  is the intention  of each of  the
persons  named in the accompanying proxy to vote such proxies in accordance with
his best judgment thereon.
 
                         SECURITY OWNERSHIP OF CERTAIN
                        BENEFICIAL OWNERS AND MANAGEMENT
 
    The following table contains certain information  at the Record Date as  to:
(1)  all persons who, to the knowledge  of Zenith, were the beneficial owners of
more than  5%  of the  outstanding  shares of  Common  Stock, (2)  each  of  the
Executive  Officers named  in the  Summary Compensation  Table, (3)  each of the
Directors of Zenith and (4) all Executive Officers and Directors as a group. The
persons named hold sole voting and  investment power with respect to the  shares
shown   opposite  their  respective  names,   unless  otherwise  indicated.  The
information with respect to each person specified is as supplied or confirmed by
such person.
 


                                                      AMOUNT AND NATURE OF     PERCENT
NAME AND ADDRESS OF BENEFICIAL OWNER                BENEFICIAL OWNERSHIP (1)   OF CLASS
- --------------------------------------------------  ------------------------   --------
                                                                         
Reliance Insurance Company(2)(3)..................             6,574,445          37.2%
  4 Penn Center Plaza
  Philadelphia, PA 19103
Harvey L. Silbert(3)(4)(5)........................             1,058,640           6.0%
  10100 Santa Monica Blvd.
  Suite 2200
  Los Angeles, CA 90067
Gilder, Gagnon, Howe & Co.(6).....................             1,057,886           6.0%
  1775 Broadway
  New York, New York 10019
Stanley R. Zax(3)(4)(7)...........................               448,564           2.5%
  21255 Califa Street
  Woodland Hills, CA 91367
Jack M. Ostrow(3)(4)(8)...........................               100,000             *
  9601 Wilshire Blvd.
  Beverly Hills, CA 90210
Gerald Tsai, Jr.(4)...............................                50,000             *
  200 Park Ave.
  New York, New York 10166
Fredricka Taubitz(9)..............................                55,275             *
  21255 Califa Street
  Woodland Hills, CA 91367
James P. Ross(10).................................                38,343             *
  21255 Califa Street
  Woodland Hills, CA 91367
Keith E. Trotman(11)..............................                27,753             *
  21255 Califa Street
  Woodland Hills, CA 91367

 
                                       2



                                                      AMOUNT AND NATURE OF     PERCENT
NAME AND ADDRESS OF BENEFICIAL OWNER                BENEFICIAL OWNERSHIP (1)   OF CLASS
- --------------------------------------------------  ------------------------   --------
                                                                         
John J. Tickner(12)...............................                12,641             *
  21255 Califa Street
  Woodland Hills, CA 91367
Max M. Kampelman(4)...............................                 4,992             *
  1001 Pennsylvania Avenue N.W.
  Washington D.C. 20004
William Steele Sessions(4)(13)....................                 1,461             *
  Weston Centre
  112 East Pecan St.
  San Antonio, TX 78205
George E. Bello(4)(14)............................                     0             0
  Park Avenue Plaza
  55 East 52nd Street
  New York, NY 10055
Robert M. Steinberg(4)(14)........................                     0             0
  Park Avenue Plaza
  55 East 52nd Street
  New York, NY 10055
Saul P. Steinberg(4)(14)(15)......................             6,574,445          37.2%
  Park Avenue Plaza
  55 East 52nd Street
  New York, NY 10055
All Executive Officers and Directors as a group
(14 persons)(16)..................................             8,372,405          46.6%

 
- ------------------------
  * Less than 1%
 
 (1)Subject to applicable community property and similar statutes.
 
 (2)Number of  shares shown  includes 39,110  shares held  by Reliance  National
    Insurance  Company  of New  York and  39,110 shares  held by  United Pacific
    Insurance Company of New  York, both wholly  owned subsidiaries of  Reliance
    Insurance  Company. Reliance Insurance Company  is a wholly-owned subsidiary
    of  Reliance  Financial  Services  Corporation,  which  is  a   wholly-owned
    subsidiary  of Reliance Group  Holdings, Inc. Saul  P. Steinberg, members of
    his family and affiliated trusts own  approximately 45% of the common  stock
    of  Reliance Group Holdings, Inc.,  and as a result  of such stock holdings,
    Saul P. Steinberg  may be deemed  to control Reliance  Group Holdings,  Inc.
    Pursuant to an Amended Exemption issued to Reliance Insurance Company by the
    Insurance  Commissioner  of  the  State  of  California,  Reliance Insurance
    Company has agreed that it  will not vote shares in  excess of 28.7% of  the
    outstanding  Common  Stock unless  it  obtains the  Insurance Commissioner's
    consent or qualifies for an exemption from such consent.
 
 (3)Reliance Insurance Company  and each of  Jack M. Ostrow,  Harvey L.  Silbert
    (individually  and as  trustee of  a family trust)  and Stanley  R. Zax were
    granted certain rights  to require Zenith  to register for  sale, under  the
    Securities Act of 1933, shares of Common Stock beneficially owned by each of
    them.  Zenith granted these  rights in connection with  the sale in February
    1981 of an aggregate of 1,387,375 shares of Common Stock (20.5% of the  then
    outstanding  shares)  to  Reliance  Insurance  Company  by  certain  selling
    stockholders, including Messrs. Ostrow, Silbert and Zax.
 
 (4)Director of Zenith.
 
                                       3

 (5)Number of  shares shown  includes  173,551 shares  held  by Mr.  Silbert  as
    trustee  of certain family trusts, as  to which shares Mr. Silbert disclaims
    beneficial ownership. Number  of shares shown  also includes 885,089  shares
    held  by The Harvey L. and Lillian  Silbert Family Trust, a revocable trust,
    of which Mr. Silbert is a trustee.
 
 (6)On February  25,  1997, Zenith  was  supplied with  information  by  Gilder,
    Gagnon,  Howe & Co. that it holds  1,057,886 shares of Common Stock. Gilder,
    Gagnon, Howe & Co. also confirmed  that it has shared dispositive power  and
    shared  voting power  with respect  to 120,000  shares and  sole dispositive
    power, but no voting power, with respect to 937,886 shares. Gilder,  Gagnon,
    Howe  & Co. disclaims beneficial ownership with respect to all of the shares
    shown in the table.
 
 (7)Chief Executive Officer  of Zenith.  Number of shares  shown includes  1,030
    shares  owned by Mr.  Zax as custodian  for his adult  children, as to which
    shares Mr. Zax  disclaims beneficial  ownership, and 200,000  shares, as  to
    which  options are  or will become  exercisable within sixty  days after the
    Record Date.
 
 (8) Number of shares shown consists of 65,000 shares held by The Ostrow  Family
    Trust, a revocable trust, of which Mr. Ostrow is a trustee and 35,000 shares
    held by the Bella Ostrow Unitrust of which Mr. Ostrow is the sole trustee.
 
 (9)  Executive Officer of Zenith. Number  of shares shown includes 5,025 shares
    allocated to such Executive Officer's account  in The Zenith 401(k) Plan  as
    of  December  31,  1996,  the  latest date  for  which  such  information is
    available, and  43,750  shares, as  to  which  options are  or  will  become
    exercisable within sixty days after the Record Date.
 
(10) Executive Officer of Zenith. Number of shares shown includes 36,250 shares,
    as  to which options are or will  become exercisable within sixty days after
    the Record Date.
 
(11) Executive  Officer of  Zenith. Number  of shares  shown consists  of  4,003
    shares  allocated to such  Executive Officer's account  in The Zenith 401(k)
    Plan as of December 31, 1996, the latest date for which such information  is
    available,  and  23,750  shares, as  to  which  options are  or  will become
    exercisable within sixty days after the Record Date.
 
(12) Executive  Officer of  Zenith. Number  of shares  shown consists  of  1,391
    shares  allocated to such  Executive Officer's account  in The Zenith 401(k)
    Plan as of December 31, 1996, the latest date for which such information  is
    available,  and  11,250  shares, as  to  which  options are  or  will become
    exercisable within sixty days after the Record Date.
 
(13) Shares  shown are  held in  Mr. Sessions'  Simplified Employee  Pension  --
    Individual Retirement Account.
 
(14) Director of Reliance Insurance Company.
 
(15)  Shares shown are those owned by  Reliance Insurance Company and certain of
    its subsidiaries. See notes (2) and (3) above.
 
(16) Number of shares shown includes 315,000 shares, as to which options are  or
    will  become  exercisable  within  sixty days  after  the  Record  Date, and
    excludes shares  allocated  to  The  Zenith  401(k)  Plan  accounts  of  the
    Executive Officers subsequent to December 31, 1996, which information is not
    available  as of the  date of this  Proxy Statement. Number  of shares shown
    also includes  6,574,445  shares owned  by  Reliance Insurance  Company  and
    certain of its subsidiaries. See notes (2), (3) and (15) above.
 
                                       4

                      (This page intentionally left blank)

            SECTION 16(A) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE
 
    Section  16(a) of the  Securities Exchange Act of  1934 (the "Exchange Act")
and the regulations of the Securities and Exchange Commission (the "Commission")
thereunder require Zenith's  Executive Officers and  Directors, and persons  who
own  more than ten percent of a  registered class of Zenith's equity securities,
to file reports of  ownership and changes in  ownership with the Commission  and
the  New York Stock Exchange and to furnish Zenith with copies of all such forms
they file.
 
    Based solely on its review  of the copies of such  forms received by it  and
written  representations from  certain reporting persons,  Zenith believes that,
during the year ended December 31,  1996, all filing requirements applicable  to
its  Executive  Officers, Directors,  and 10%  stockholders were  complied with,
except that due to inadvertent error, an Executive Officer, Philip R. Hunt,  did
not file a Form 4 reporting two cashless exercises of employee stock options for
the  purchase of 1,000 and 2,000 shares of Common Stock. Each cashless exercise,
consisting of the exercise of the option and an immediate sale through a broker,
occurred in the same month. Mr. Hunt  has subsequently filed a Form 5  reporting
the two cashless exercises.
 
                             ELECTION OF DIRECTORS
 
    It  is the  intention of  the persons  named in  the enclosed  proxy, unless
otherwise specifically instructed, to vote the proxies received by them for  the
election  of the nominees listed  in the table below  as Directors of Zenith. In
the event that there should be  cumulative voting in the election of  Directors,
as  set forth in this Proxy Statement  under "Voting" above, it is the intention
of such persons  to distribute the  votes represented by  each proxy among  such
nominees  in  such proportion  as they  see  fit, unless  otherwise specifically
instructed.
 
    All nominees have consented to being  named herein and have indicated  their
intention  to  serve if  elected. In  the  unanticipated event  that any  of the
nominees becomes unable to serve as a Director, the proxies will be voted for  a
substitute nominee in accordance with the best judgment of the person or persons
voting them.
 
    A  Director of Zenith  serves until the next  Annual Meeting of Stockholders
and until his successor is elected and qualified.
 
    The nominees  for Director  listed below  were designated  by the  Board  of
Directors of Zenith. The information with respect to each nominee is as supplied
or confirmed by such nominee.
 


                                    SERVED AS     POSITIONS AND        PRINCIPAL OCCUPATIONS AND          OTHER PUBLICLY HELD
                                    DIRECTOR    OFFICES HELD WITH        EMPLOYMENT DURING PAST          CORPORATIONS IN WHICH
            NAME              AGE     SINCE           ZENITH                   FIVE YEARS                  DIRECTORSHIPS HELD
- ----------------------------  ---   ---------  --------------------  ------------------------------  ------------------------------
                                                                                      
George E. Bello               61       May     Director of Zenith    Executive Vice President        Reliance Group Holdings, Inc.;
(1)                                   1984     and Zenith Insurance  and Controller of Reliance      Reliance Financial Services
                                                                     Group Holdings, Inc. for more   Corporation; Horizon Mental
                                                                     than the past five years (2)    Health Management, Inc.;
                                                                                                     United Dental Care, Inc.

 
                                       5



                                    SERVED AS     POSITIONS AND        PRINCIPAL OCCUPATIONS AND          OTHER PUBLICLY HELD
                                    DIRECTOR    OFFICES HELD WITH        EMPLOYMENT DURING PAST          CORPORATIONS IN WHICH
            NAME              AGE     SINCE           ZENITH                   FIVE YEARS                  DIRECTORSHIPS HELD
- ----------------------------  ---   ---------  --------------------  ------------------------------  ------------------------------
                                                                                      
Max M. Kampelman              76    February   Director of Zenith    Attorney, Of Counsel, since     None
                                      1989     and Zenith Insurance  March 1991, and Partner,
                                                                     January 1989 to March 1991,
                                                                     Fried, Frank, Harris, Shriver
                                                                     & Jacobson; Counselor of the
                                                                     Department of State and Head
                                                                     of the U.S. Delegation to
                                                                     Negotiations on Nuclear and
                                                                     Space Arms with the Soviet
                                                                     Union from January 1985 to
                                                                     January 1989
 
Jack M. Ostrow                75    September  Director of Zenith    Attorney and Certified Public   None
(1)                                   1977     and Zenith            Accountant for more than the
                                               Insurance, Chairman   past five years
                                               of Audit Committee,
                                               Member of
                                               Performance Bonus
                                               Committee
 
William Steele Sessions       66    September  Director of Zenith    Attorney, Sessions & Sessions,  The O'Gara Company
                                      1993     and Zenith Insurance  L.C. since March 1995;
                                                                     Security Consultant since July
                                                                     1993; Director, Federal Bureau
                                                                     of Investigation from 1987 to
                                                                     1993
 
Harvey L. Silbert             84     January   Director of Zenith    Attorney, Of Counsel, Loeb &    None
(1)(3)                                1978     and Zenith            Loeb LLP since March 1991; Of
                                               Insurance, Member of  Counsel, Wyman, Bautzer,
                                               Performance Bonus     Kuchel & Silbert for more than
                                               Committee             five years prior to March
                                                                     1991; management of personal
                                                                     investments for more than the
                                                                     past five years
 
Robert M. Steinberg           54    February   Director of Zenith    President and Chief Operating   Reliance Group Holdings, Inc.;
(1)(4)                                1981     and Zenith Insurance  Officer of Reliance Group       Reliance Financial Services
                                                                     Holdings, Inc. and Chairman of  Corporation
                                                                     the Board and Chief Executive
                                                                     Officer of Reliance Insurance
                                                                     Company for more than the past
                                                                     five years (2)

 
                                       6



                                    SERVED AS     POSITIONS AND        PRINCIPAL OCCUPATIONS AND          OTHER PUBLICLY HELD
                                    DIRECTOR    OFFICES HELD WITH        EMPLOYMENT DURING PAST          CORPORATIONS IN WHICH
            NAME              AGE     SINCE           ZENITH                   FIVE YEARS                  DIRECTORSHIPS HELD
- ----------------------------  ---   ---------  --------------------  ------------------------------  ------------------------------
                                                                                      
Saul P. Steinberg             57    February   Director of Zenith    Chairman of the Board and       Reliance Group Holdings, Inc.;
(1)(4)(5)(6)                          1981     and Zenith Insurance  Chief Executive Officer of      Reliance Financial Services
                                                                     Reliance Group Holdings, Inc.   Corporation;
                                                                     for more than the past five     Symbol Technologies, Inc.
                                                                     years (2)
 
Gerald Tsai, Jr.              68    December   Director of Zenith    Chairman, President, and Chief  Delta Life and Annuity
                                      1991     and Zenith            Executive Officer of Delta      Company; Meditrust;
                                               Insurance, Chairman   Life Corporation since          Proffitt's, Inc.; Rite Aid
                                               of Performance Bonus  February 1993; management of    Corporation; Sequa
                                               Committee             private investments since       Corporation; Triarc Companies,
                                                                     January 1989; Chairman and      Inc.
                                                                     CEO, Primerica Corp., February
                                                                     1987 to December 1988
 
Stanley R. Zax                59      July     Chairman of the Board and President of Zenith and     None
(1)                                   1977     Zenith Insurance for more than the past five years;
                                               Chairman of the Board of CalFarm Life Insurance
                                               Company for more than five years prior to December
                                               1995; Chairman of the Board and President of CalFarm
                                               for more than five years prior to January 1995; and
                                               Chairman of the Executive Committee of the Board of
                                               Directors of CalFarm since January 1995 (7)

 
- ------------------------------
(1)  In  connection with the sale in February  1981 of an aggregate of 1,387,375
     shares of Common Stock (20.5% of  the then outstanding shares) to  Reliance
     Insurance  Company  by  certain  selling  stockholders,  including  Messrs.
     Ostrow, Silbert and Zax, the selling stockholders agreed to use their  best
     efforts  to expand the  Boards of Directors of  Zenith and Zenith Insurance
     and to cause (so long  as Reliance Insurance Company  owns at least 10%  of
     Zenith's  outstanding Common Stock) the election thereto of three qualified
     persons designated by Reliance Insurance  Company. George E. Bello,  Robert
     M. Steinberg and Saul P. Steinberg have been so designated.
 
(2)  Reliance  Insurance  Company, Reliance  Group  Holdings, Inc.  and Reliance
     Financial  Services  Corporation  are   insurance  and  insurance   holding
     companies.  Based  on  Reliance  Insurance  Company's  and  certain  of its
     subsidiaries'  holdings  of  Common  Stock,  Reliance  Insurance   Company,
     Reliance  Group Holdings, Inc., and Reliance Financial Services Corporation
     may be deemed to be affiliates of Zenith. See note (6) below.
 
(3)  Mr. Silbert  is of  counsel to  the  law firm  of Loeb  & Loeb  LLP,  which
     performed certain legal services for Zenith in 1996.
 
(4)  Robert M. Steinberg and Saul P. Steinberg are brothers.
 
(5)  On  July 30,  1993, Telemundo  Group, Inc.  ("Telemundo") consented  to the
     entry of  an  order  for relief  under  Chapter  11 of  the  United  States
     Bankruptcy  Code. On December 30,  1994, Telemundo's Plan of Reorganization
     was consummated. Saul P. Steinberg previously served as President (February
     1990 through  February 1991)  and Chief  Executive Officer  (February  1990
     through May 1992) of Telemundo.
 
(6)  On December 31, 1996, Zenith Insurance acquired Associated General Commerce
     Self-Insurers'  Trust  Fund  ("AGC-SIF"), a  Florida  workers' compensation
     self-insurance fund. Prior  to the  acquisition, AGC-SIF  had entered  into
     reinsurance  arrangements in the ordinary course of business. Some of these
     arrangements were with Reliance Insurance Company. As of December 31, 1996,
     Zenith's consolidated assets included  balances of $20,215,000 relating  to
     these  arrangements  with  Reliance Insurance  Company.  Reliance Insurance
     Company is  a  wholly  owned  subsidiary  of  Reliance  Financial  Services
     Corporation, which is a wholly owned subsidiary of Reliance Group Holdings,
     Inc.  Saul P.  Steinberg, members of  his family and  affiliated trusts own
     approximately 45% of Reliance Group Holdings, Inc.
 
(7)  Zenith Insurance and  CalFarm are wholly-owned  subsidiaries of Zenith,  as
     was  CalFarm Life  Insurance Company until  its sale by  Zenith in December
     1995.
 
                                       7

    The Board  of  Directors  communicated  frequently  during  the  year  ended
December  31, 1996, held five formal meetings, and also took action by unanimous
written consent. Zenith's Board of Directors has a standing Audit Committee  and
a  Performance Bonus Committee but has  no nominating committee or any committee
performing similar  functions.  The  sole  member  and  Chairman  of  the  Audit
Committee  is currently Mr. Ostrow. The functions  of the Audit Committee are to
recommend to the Board of Directors retention or change of Zenith's  independent
auditors;  to consider  the range  of audit  and non-audit  fees; to  review the
independence of the  auditors; to  meet with  them and  Zenith's internal  audit
personnel to discuss and review the results of their respective examinations and
audit  plans for the ensuing year; to  review the adequacy of Zenith's system of
internal accounting  controls and  like  matters. The  Audit Committee  is  also
authorized  to review and discuss other  matters as it deems appropriate. During
1996, the Audit  Committee communicated frequently  with Zenith's financial  and
accounting  and internal  audit department  personnel and  independent auditors,
including six formal  meetings. The Performance  Bonus Committee, consisting  of
Messrs.   Ostrow,   Silbert,   and   Tsai   (Chairman),   is   responsible   for
performance-based  compensation  plans  for  Executive  Officers,  namely,   the
Executive  Officer Bonus  Plan and  the 1996  Employee Stock  Option Plan  as it
relates to  grants thereunder  to  Executive Officers.  The Board  of  Directors
retains responsibility for all other compensation matters. The Performance Bonus
Committee held two formal meetings in 1996, but communicated frequently and also
took  action by unanimous written consent. Each Director, except Messrs. Saul P.
Steinberg and Robert M. Steinberg, attended at least 75% of the aggregate of all
meetings of the Board of Directors and  of any committees thereof on which  such
Director served.
 
                            DIRECTORS' COMPENSATION
 
    Zenith  pays each Director  (other than Mr. Zax,  who receives no additional
compensation therefor) a fee of $50,000 per annum for serving as a member of the
Board of Directors.  Mr. Ostrow also  receives a  fee of $25,000  per annum  for
serving as the Chairman and sole member of Zenith's Audit Committee.
 
                             EXECUTIVE COMPENSATION
 
    The  following table sets forth  information regarding the compensation paid
during the 1994, 1995, and 1996 fiscal years to Zenith's Chief Executive Officer
and its four  other most  highly compensated  Executive Officers  serving as  of
December 31, 1996 (the "Named Executive Officers").
 
                                       8

                           SUMMARY COMPENSATION TABLE
 


                                                                                             LONG TERM
                                                                                            COMPENSATION
                                                                                          ----------------
                                                                                               AWARDS
                                                          ANNUAL COMPENSATION             ----------------
                                                ---------------------------------------      SECURITIES
                                                                         OTHER ANNUAL        UNDERLYING       ALL OTHER
                                                                         COMPENSATION         OPTIONS/       COMPENSATION
      NAME AND PRINCIPAL POSITION         YEAR  SALARY ($)  BONUS ($)(1)       ($)            SARS (#)          ($)(3)
- ----------------------------------------  ----  ----------  ----------  ---------------   ----------------   ------------
                                                                                           
STANLEY R. ZAX                            1996  $1,027,320  $        0     $      0         1,000,000          $31,926
Chairman of the Board and                 1995   1,027,320   1,000,000            0                 0           31,926
President of Zenith and                   1994   1,027,320   1,500,000            0                 0           31,926
Zenith Insurance,
Chairman of the Executive Committee of
the Board of Directors of CalFarm
 
FREDRICKA TAUBITZ                         1996  $  391,600  $  200,000     $      0                 0          $ 8,926
Executive Vice President and              1995     380,600     125,000            0            20,000            8,840
Chief Financial Officer of Zenith         1994     368,100     250,000            0                 0            8,840
and Zenith Insurance, Senior
Vice President of CalFarm
 
KEITH E. TROTMAN                          1996  $  340,100  $  200,000     $      0            10,000          $ 7,846
Senior Vice President of Zenith           1995     330,600     200,000            0            20,000            7,777
Insurance and CalFarm                     1994     325,600     240,000            0                 0            7,786
 
JAMES P. ROSS                             1996  $  283,717  $  100,000     $      0                 0          $ 7,971
Senior Vice President of                  1995     263,717     250,000        8,400(2)         50,000            8,597
Zenith, Zenith Insurance and              1994     254,011     345,000            0                 0           13,933
CalFarm
 
JOHN J. TICKNER                           1996  $  253,704  $  100,000     $      0            10,000          $20,991
Senior Vice President and                 1995     245,371      75,000            0            15,000           20,905
Secretary of Zenith, Senior Vice          1994     245,528      85,000            0                 0           31,326
President, General Counsel and
Secretary of Zenith Insurance and
CalFarm

 
- ------------------------
(1) All  amounts shown were determined and paid under Zenith's Executive Officer
    Bonus Plan.
 
(2) Amount shown for Mr. Ross reflects Zenith's matching contribution under  its
    Stock Purchase Plan.
 
(3) The following amounts are included in the above table: (a) Zenith's matching
    contributions  made  in  fiscal year  1996  to  The Zenith  401(k)  Plan, as
    follows: Stanley R. Zax, none; Fredricka Taubitz, $3,166; Keith E.  Trotman,
    $3,166;  James P. Ross,  none; and John  J. Tickner, $3,166;  (b) the dollar
    value of insurance premiums paid  in fiscal year 1996  by, or on behalf  of,
    Zenith  with respect  to term  life insurance for  the benefit  of the Named
    Executive Officer, as  follows: Stanley R.  Zax, $9,000; Fredricka  Taubitz,
    $5,760;  Keith  E.  Trotman, $4,680;  James  P.  Ross, $1,800;  and  John J.
    Tickner, $4,500;  and (c)  the dollar  value  of the  benefit to  the  Named
    Executive Officer of premiums paid by, or on behalf of, Zenith during fiscal
    year  1996, with respect to certain split dollar life insurance policies, as
    follows: Stanley R. Zax, $22,926; Fredricka Taubitz, none; Keith E. Trotman,
    none; James P. Ross, $6,171; and John J. Tickner, $13,325.
 
                                       9

                     OPTION/SAR GRANTS IN LAST FISCAL YEAR
 


                                               INDIVIDUAL GRANTS                        POTENTIAL REALIZABLE
                           ---------------------------------------------------------      VALUE AT ASSUMED
                              NUMBER OF       % OF TOTAL                                  ANNUAL RATES OF
                             SECURITIES      OPTIONS/SARS                             STOCK PRICE APPRECIATION
                             UNDERLYING       GRANTED TO    EXERCISE OR                 FOR OPTION TERM (4)
                            OPTIONS/SARS     EMPLOYEES IN   BASE PRICE    EXPIRATION  ------------------------
          NAME             GRANTED (#) (1)   FISCAL YEAR    ($/SH) (2)     DATE (3)     5% ($)       10% ($)
- -------------------------  ---------------   ------------   -----------   ----------  -----------  -----------
                                                                                 
Stanley R. Zax              1,000,000            70.3%       $23.6250      3/14/06    $14,857,636  $37,652,166
Fredricka Taubitz              --               --             --             --          --           --
Keith E. Trotman               10,000              .7%       $27.5625      12/09/01   $    76,150  $   168,272
James P. Ross                  --               --             --             --          --           --
John J. Tickner                10,000              .7%       $27.5625      12/09/01   $    76,150  $   168,272

 
- ------------------------
(1) Options granted in 1996 are not exercisable during the first year  following
    the  date of grant. Except for Mr. Zax's, each option becomes exercisable as
    to 25% of the total number of underlying shares in the second year following
    the date of  grant and as  to an additional  25% in each  of the next  three
    years. Mr. Zax's options become exercisable as to 20% of the total number of
    underlying  shares in the second year following  the date of grant and as to
    an additional 20% in  each of the  next four years. However,  if there is  a
    Change  of  Control  (as defined  in  his employment  agreement),  Mr. Zax's
    options thereupon become fully exercisable.
 
(2) All options were granted with an option  price equal to the market price  of
    the  Common Stock on the date of grant (based on the average of the high and
    low prices on the New York Stock Exchange for such date).
 
(3) Except for Mr. Zax's, the options granted  in 1996 expire on the earlier  to
    occur  of  (a) five  years  from the  date  of grant,  (b)  in the  event of
    termination of the optionee's employment, three months from the date of such
    termination, or (c) in the event of the optionee's death, one year from  the
    date  thereof  and, following  termination of  employment  or death,  may be
    exercised only  to the  extent they  were  exercisable on  the date  of  the
    optionee's  termination of employment or death.  Mr. Zax's options expire on
    the earlier to occur  of (a) ten years  from the date of  grant, (b) in  the
    event  of termination of his employment, three  months from the date of such
    termination, and (c)  in the  event of  his death,  one year  from the  date
    thereof  and, following termination of employment or death, may be exercised
    in full  (whether or  not otherwise  vested) to  the extent  not  previously
    exercised.  However, if termination of employment  is by reason of Mr. Zax's
    breach of any material obligation under his employment agreement, Mr.  Zax's
    options  may be exercised  only to the  extent they were  exercisable on the
    date of termination of his employment.
 
(4) The potential gains shown are  net of the option  exercise price and do  not
    include  the effect of any taxes associated with exercise. The amounts shown
    are  for  the  assumed  rates  of  appreciation  only,  do  not   constitute
    projections  of future stock  price performance, and  may not necessarily be
    realized. Actual gains,  if any,  on stock  option exercises  depend on  the
    future performance of the Common Stock, continued employment of the optionee
    through the term of the option, and other factors.
 
                                       10

              AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR
                     AND FISCAL YEAR END OPTION/SAR VALUES
 


                                                                 NUMBER OF SECURITIES          VALUE OF UNEXERCISED
                                                                UNDERLYING UNEXERCISED             IN-THE-MONEY
                                   SHARES                     OPTIONS/SARS AT FY-END (#)    OPTIONS/SARS AT FY-END ($)
                                ACQUIRED ON       VALUE       ---------------------------   ---------------------------
             NAME               EXERCISE (#)   REALIZED ($)   EXERCISABLE   UNEXERCISABLE   EXERCISABLE   UNEXERCISABLE
- ------------------------------  ------------   ------------   -----------   -------------   -----------   -------------
                                                                                        
Stanley R. Zax                     --              --                0        1,000,000      $      0      $3,750,000
Fredricka Taubitz                  --              --           43,750           21,250      $324,297      $  117,266
Keith E. Trotman                   --              --           23,750           31,250      $119,297      $  117,266
James P. Ross                      15,000        $136,186       36,250           43,750      $214,141      $  248,047
John J. Tickner                    --              --           11,250           23,750      $ 57,891      $   77,422

 
              EMPLOYMENT AGREEMENTS AND TERMINATION OF EMPLOYMENT
                       AND CHANGE IN CONTROL ARRANGEMENTS
 
    Effective  December 6,  1994, Zenith  entered into  an amended  and restated
employment agreement with  Mr. Zax,  which extends  the expiration  date of  his
employment  agreement from December  31, 1995 to December  31, 1998. The amended
and restated employment agreement provides for an annual base compensation  plus
an  annual bonus to  be determined under Zenith's  Executive Officer Bonus Plan.
Under the agreement,  Mr. Zax's  base compensation is  continued at  $1,000,000,
subject  to such other  increases as the  Board of Directors  may determine from
time to time. Upon Mr. Zax's death, Zenith will continue to pay either his wife,
children or estate his base compensation and annual bonus for a period of twelve
months. If Mr. Zax's  employment is terminated for  disability, he will  receive
his  base compensation and annual bonus for a period of six months. If Mr. Zax's
employment is terminated for breach by him of his employment agreement, he  will
receive  his  base  compensation through  the  end  of the  month  in  which the
termination occurs. If his  employment is terminated for  any reason other  than
for  breach of his  employment agreement, death, or  disability, Zenith will pay
Mr. Zax  his  base  compensation  and  annual bonus  through  the  term  of  his
employment  agreement. Upon  a Change in  Control (as defined  in the employment
agreement) of Zenith, all stock options and stock appreciation rights granted to
Mr. Zax,  to  the  extent  not exercisable  at  such  time,  become  immediately
exercisable.  In addition, if  Mr. Zax's employment  is terminated subsequent to
any Change in Control either by Mr. Zax within 180 days of the Change in Control
or by Zenith for any  reason other than disability  or breach of his  employment
agreement, Mr. Zax is entitled to receive Severance Payments (as defined below).
 
    Effective  December 6,  1994, Zenith  entered into  an amended  and restated
employment agreement with Ms. Taubitz, which extends the expiration date of  her
employment  agreement from October 1,  1995 to October 1,  1998. The amended and
restated employment agreement provides for  an annual base compensation plus  an
annual  bonus to be  determined under Zenith's Executive  Officer Bonus Plan and
certain additional  benefits.  The  base  compensation  is  currently  $376,000,
subject  to such increases as the Board  of Directors may determine from time to
time.
 
    Effective February 16,  1995, Zenith  entered into an  amended and  restated
employment  agreement with Mr. Tickner, which extends the expiration date of his
employment agreement from October  1, 1995 to October  1, 1998. The amended  and
restated  employment agreement provides for an  annual base compensation plus an
annual bonus to be  determined under Zenith's Executive  Officer Bonus Plan  and
certain  additional  benefits.  The  base  compensation  is  currently $249,500,
subject to such increases as the Board  of Directors may determine from time  to
time.
 
                                       11

    Zenith's employment agreements with Ms. Taubitz and Mr. Tickner provide that
if  her  or his  employment  is terminated  by Zenith  other  than for  cause or
disability, the executive is entitled  to Severance Payments. In addition,  each
of  Ms. Taubitz and Mr. Tickner may  terminate her or his employment with Zenith
and receive Severance Payments  should (a) Mr. Zax  cease, for any reason  other
than  death  or  disability, to  be  the  full-time Chairman  of  the  Board and
President of  Zenith,  (b)  she  or  he  be  prohibited  or  restricted  in  the
performance  of her or his duties,  (c) any payment due her  or him under her or
his agreement remain unpaid for more than 60 days, or (d) she or he give written
notice of termination  of the  employment agreement  to Zenith  within 180  days
following  a  Change in  Control (as  defined in  the employment  agreements) of
Zenith.
 
    For purposes of  the foregoing, "Severance  Payments" include the  following
benefits:  (1) in the case  of Mr. Tickner, all  salary payments that would have
been payable to the executive for the  greater of (a) the remaining term of  the
employment  agreement or (b) one year, plus a pro rata portion of any bonus that
would  have  been  payable  to  the  executive  with  respect  to  the  year  of
termination; (2) in the case of Mr. Zax and Ms. Taubitz, a cash lump sum payment
equal  to the greater of (a) twice the  sum of the executive's then current base
compensation and  the highest  annual bonus  paid or  payable during  the  three
consecutive  years immediately  preceding termination  of employment  or (b) the
actuarial equivalent of the base compensation and annual bonuses that would have
been payable  to  the executive  under  the  remaining term  of  the  employment
agreement;  (3)  continuation of  life, disability,  dental, accident  and group
health insurance benefits, plus an additional amount necessary to reimburse  the
executive  for any taxes attributable solely  to the executive's receipt of such
benefits; (4) in the case of Ms.  Taubitz and Mr. Tickner, vesting of all  stock
option  and  similar rights;  and (5)  an additional  payment, if  necessary, to
assure that none of the above benefits  are subject to net reduction due to  the
imposition  of excise taxes under  section 4999 of the  Internal Revenue Code of
1986, as amended.
 
          COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
    In 1996,  all  decisions  on  Executive  Officer  compensation,  other  than
decisions  related  to performance-based  compensation plans,  were made  by the
Board of Directors. Mr. Zax, Chairman of the Board and President, is a member of
the Board  of  Directors, and  except  with  respect to  his  own  compensation,
participated  in  the  Board of  Directors'  deliberations  concerning Executive
Officer compensation.
 
    The Performance Bonus Committee, consisting of Messrs. Ostrow, Silbert,  and
Tsai,  determines matters  relating to performance-based  compensation plans for
Executive Officers. Mr. Silbert  is of counsel  to the law firm  of Loeb &  Loeb
LLP, which performed certain legal services for Zenith in 1996.
 
       BOARD OF DIRECTORS' REPORT ON EXECUTIVE COMPENSATION; PERFORMANCE
                  BONUS COMMITTEE REPORT ON PERFORMANCE BASED
                   COMPENSATION PLANS FOR EXECUTIVE OFFICERS
 
    Zenith's  entire  Board of  Directors  made determinations  with  respect to
compensation of Executive  Officers in 1996,  except with respect  to Mr.  Zax's
compensation, which is established in Board of Directors' actions from which Mr.
Zax excuses himself and in which he does not participate and except with respect
to  matters  related  to  performance-based  compensation  plans  for  Executive
Officers.  The   Performance   Bonus   Committee   made   determinations   under
performance-based  compensation  plans  for  Executive  Officers.  The  Board of
Directors'  report  on   Executive  Compensation  and   the  Performance   Bonus
Committee's  report on its determinations shall not be deemed to be incorporated
by reference through any general statement incorporating by reference this proxy
statement into  any  filings under  the  Securities Act  of  1933 or  under  the
Securities  Exchange Act of 1934  and shall not otherwise  be deemed to be filed
under such Acts.
 
                                       12

    The Board of Directors' report on Executive Compensation follows:
 
    EXECUTIVE OFFICERS
    The level of compensation for Executive Officers of Zenith is intended to be
competitive (that  is,  "attractive")  and to  provide  appropriate  incentives.
Executive Officers of Zenith are generally compensated through salary, grants of
stock options, and bonuses under the Executive Officer Bonus Plan. The Executive
Officer  Bonus Plan, approved by  the stockholders of Zenith  at the 1994 Annual
Meeting, is administered  by the  Performance Bonus  Committee. The  Performance
Bonus  Committee also grants stock options  to Executive Officers under Zenith's
1996 Employee Stock Option Plan. The  report of the Performance Bonus  Committee
follows this report.
 
    The  level of an Executive Officer's base compensation is generally based on
a combination  of (1)  the performance  of Zenith,  (2) the  performance of  the
insurance  subsidiary, if  any, to  which the  Executive Officer  is principally
assigned, and  (3)  a subjective  and  qualitative evaluation  of  the  personal
contribution  made by  the Executive Officer  to Zenith. Success  in these areas
does not translate mechanically  into compensation levels;  the manner in  which
these  factors  are  taken  into  account is  discretionary  with  the  Board of
Directors and is not based on any formulaic weighting.
 
    The performance of Zenith is generally measured by the combined ratio of its
property and casualty  insurance operations  and by  its overall  profitability.
Zenith  strives for and has achieved long  term average combined ratios that are
about 100%. Zenith also  strives for combined ratios  that compare favorably  in
both the short and long term with insurers primarily engaged in writing workers'
compensation  insurance. In addition, Zenith endeavors  to have loss ratios that
are among the lowest for the industry in any rolling previous five year  period.
The  performance of the  Zenith insurance subsidiaries  is generally measured by
the same factors, as applicable.
 
    With respect to the  subjective and qualitative  evaluation of an  Executive
Officer's  personal contribution to the business of Zenith, a variety of factors
are taken into account. These factors vary and include, but are not limited  to,
the  manner in which  the Executive Officer  favorably affects Zenith's combined
ratio and profitability. Equally, if not more, important is the manner in  which
the  Executive  Officer  performs  in  Zenith's  environment,  which  fosters an
entrepreneurial spirit, teamwork, and a commitment to education. Zenith believes
an entrepreneurial spirit  maximizes profits, promotes  sound execution of  good
business  fundamentals, and  maintains a pool  of executive  talent. Teamwork is
crucial to  the effective  and  efficient implementation  of Zenith's  goals.  A
commitment to education means a dedication to lifelong learning and training for
oneself  and creating conditions  so that the  workforce is similarly dedicated.
Such dedication is critical to Zenith's ability not only to meet change, but  to
use  it  to its  competitive advantage.  In such  an environment,  proactive and
innovative approaches are strongly encouraged and rewarded.
 
    On the  operational  side,  activities  that  demonstrate  an  opportunistic
outlook,  anticipation of  changing business  conditions and  the development of
postures to take  advantage of  opportunities to  increase short  and long  term
profits are rewarded. On the administrative side, efficiency, competence, strong
compliance   efforts,  anticipation  and  avoidance  of  problems,  as  well  as
innovation, are rewarded.
 
    Certain of the Executive Officers  are employed under employment  agreements
that provide for minimum base compensation and annual bonuses. Determinations as
to  salary  increases for  these Executive  Officers, as  well as  those without
employment agreements, are  discretionary and  are not made  on the  basis of  a
formulaic  weighting of the  factors described above.  Bonuses are determined in
accordance with the Executive Officer Bonus Plan.
 
                                       13

    In 1996, the combined ratio of Zenith's property and casualty operations was
below the combined ratio for the industry as a whole. Given this performance and
taking into account  the subjective  and qualitative  evaluations of  individual
Executive  Officers,  the  level  of  an  individual  Executive  Officer's  base
compensation was  set  accordingly.  Please  see  the  separate  report  of  the
Performance  Bonus Committee for a discussion of the bonuses earned by and stock
options granted to Executive Officers in 1996.
 
    STANLEY R. ZAX, CHIEF EXECUTIVE OFFICER
    Mr. Zax  is never  present  when the  Board  of Directors  deliberates  with
respect  to his compensation and, accordingly,  does not participate in Board of
Directors' decisions on his own compensation.
 
    Mr. Zax's base  salary for 1996  was set out  in his four  year amended  and
restated  employment agreement executed in 1994. Under the employment agreement,
increases to base compensation are at  the discretion of the Board of  Directors
and  are not based on formulaic weighting  of factors. In determining whether to
grant any salary  increase, the same  performance criteria that  are applied  to
Executive  Officers in general are  applied to Mr. Zax.  Also, as with Executive
Officers generally, bonuses  to Mr. Zax  are determined in  accordance with  the
Executive Officer Bonus Plan.
 
    Taking  the objective and subjective  criteria described above into account,
the Board of  Directors was generally  satisfied with Mr.  Zax's initiative  and
leadership  during 1996. The Board  of Directors was concerned,  as was Mr. Zax,
with  unsatisfactory  results  in  California,  but  believed  Mr.  Zax's   base
compensation  should continue at  its present level  with any further incentives
and rewards to be under the Executive Officer Bonus Plan.
 
    SECTION 162(M) POLICY
    Section 162(m) of the Internal Revenue  Code of 1986, as amended,  generally
limits  the Federal income tax deduction that a public corporation may claim for
annual compensation  paid to  certain executive  officers. The  limitation  with
respect  to each affected Executive Officer is $1,000,000 per year. However, the
limitation does not  apply to  compensation which  is performance-based,  earned
under a plan approved by Zenith's stockholders and which satisfies certain other
conditions  set forth  in Section 162(m)  and the  regulations thereunder. Stock
option grants awarded to Executive  Officers under Zenith's 1996 Employee  Stock
Option  Plan  and bonuses  payable under  the Executive  Officer Bonus  Plan are
intended to comply with Section 162(m). Accordingly, neither income accruing  to
Executive  Officers upon exercise of  stock options nor the  amount of any bonus
payment made to Executive Officers under the Executive Officer Bonus Plan should
be subject to the $1,000,000 limit on deductibility. The Board of Directors  has
determined  that it will pay Mr. Zax's  annual salary even though any portion in
excess of $1,000,000 would not be deductible by Zenith.
 
                     Stanley R. Zax, Chairman of the Board
 
George E. Bello                           Harvey L. Silbert
Max M. Kampelman                          Robert M. Steinberg
Jack M. Ostrow                            Saul P. Steinberg
William Steele Sessions                   Gerald Tsai, Jr.
 
                                       14

    The  Performance  Bonus   Committee's  report  on   its  determinations   on
performance-based compensation plans for Executive Officers follows:
 
    The  Performance  Bonus  Committee  is  responsible  for  administering  the
Executive Officer  Bonus  Plan  and  for granting  stock  options  to  Executive
Officers under the 1996 Employee Stock Option Plan. In so doing, the Performance
Bonus  Committee implements  and reinforces  the compensation  philosophy of the
Board of Directors, as set  out in the Board  of Directors' Report on  Executive
Compensation.
 
EXECUTIVE OFFICER BONUS PLAN
    The  Executive Officer  Bonus Plan was  approved by the  stockholders at the
1994 Annual Meeting as  a performance-based compensation  plan. It provides  for
bonuses to Executive Officers based upon attainment by Zenith in any fiscal year
of  an objectively  measured performance goal,  namely a combined  ratio that is
below the industry's combined ratio.  The Executive Officer Bonus Plan  provides
for bonuses to Executive Officers up to an amount equal to:
 
    100% of his or her salary at the beginning of the fiscal year if the Company
    Combined Ratio for such fiscal year is at least three percentage points, but
    less than five percentage points, below the Industry Combined Ratio or
 
    150% of his or her salary at the beginning of the fiscal year if the Company
    Combined Ratio for such fiscal year is at least five percentage points below
    the Industry Combined Ratio;
 
provided,  however, in either instance, the  Performance Bonus Committee may, in
its sole discretion, on a case by case basis, reduce such bonus by any amount.
 
    In 1996, Zenith's combined ratio was 99.8% before accrual for bonuses  under
the  Executive  Officer  Bonus  Plan; the  industry's  1996  combined  ratio, as
estimated and  reported  by A.M.  Best  Company, was  107.0%.  Accordingly,  the
objective performance goal under the Executive Officer Bonus Plan was met, which
the  Performance  Bonus Committee  hereby certifies  in accordance  with Section
162(m) of the Internal Revenue Code of  1986, as amended. Pursuant to the  terms
of  the  Executive Officer  Bonus  Plan, each  Executive  Officer may  receive a
maximum bonus equal  to 150% of  his or her  salary in effect  as of January  1,
1996.
 
    EXECUTIVE OFFICERS
    The  Performance  Bonus  Committee undertook  a  subjective  and qualitative
evaluation of the personal  contribution made by  each Executive Officer,  other
than   Stanley  R.  Zax,  the  Chief  Executive  Officer.  This  subjective  and
qualitative evaluation  considered the  same factors  set out  in the  Board  of
Directors'  Report on  Executive Compensation.  Based on  these evaluations, the
Performance Bonus Committee exercised its  discretion with respect to the  bonus
to  be paid  to each  Executive Officer  and reduced  the amount  payable in all
cases. For all  Executive Officers,  with the exception  of Mr.  Zax, the  total
percentage  of the bonuses  paid was 29.4%  of the maximum  that could have been
paid.
 
    STANLEY R. ZAX, CHIEF EXECUTIVE OFFICER
    As it had with the other Executive Officers, the Performance Bonus Committee
undertook a subjective and qualitative  evaluation of the personal  contribution
made by Mr. Zax and arrived at an amount to be awarded to him. Mr. Zax, however,
stated  that he  would not  accept any  bonus. The  Performance Bonus Committee,
taking Mr.  Zax's  position into  account,  reconsidered its  determination  and
decided  he  would  receive  no  bonus  currently,  despite  Zenith's  excellent
performance with respect to its  combined ratio. However, the Performance  Bonus
Committee retains the discretion to pay, at a future date, all or any portion of
the  maximum bonus Mr. Zax could have received with respect to Fiscal Year 1996,
based on his performance.
 
                                       15

STOCK OPTION GRANTS
 
    EXECUTIVE OFFICERS
 
    From time  to  time  the  Performance  Bonus  Committee  grants  options  to
Executive  Officers to purchase  Common Stock. Options are  considered a part of
compensation to recognize an Executive  Officer's contribution and to  reinforce
that  Executive Officer's  long term  commitment to  the success  of Zenith. The
Performance Bonus Committee's  determination to  grant options  to an  Executive
Officer  is based on the recommendation of the Chairman of the Board, subjective
measures and  prior  grants to  that  Executive Officer.  Beyond  these  general
considerations,  there is no  particular formula governing  the number of shares
awarded.
 
    In 1996,  the following  Named Executive  Officers were  granted options  to
purchase  Common Stock under the 1996 Employee Stock Option Plan, in the amounts
set forth below:
 

                                                            
John J. Tickner......................................     10,000  shares
Keith E. Trotman.....................................     10,000  shares

 
    STANLEY R. ZAX, CHIEF EXECUTIVE OFFICER
 
    In early 1996, the  Performance Bonus Committee granted  Mr. Zax options  to
purchase  1,000,000 shares of Common Stock  under the 1996 Employee Stock Option
Plan. The factors considered  by the Performance Bonus  Committee in making  the
grant  were based on subjective measures and prior option grants. In particular,
the Performance Bonus Committee took note of the fact that prior to this  grant,
Mr.  Zax had no outstanding stock options. The last time options were granted to
Mr. Zax was in 1987, and all of those options had expired or had been  exercised
by 1995.
 
                           Gerald Tsai, Jr., Chairman
                                 Jack M. Ostrow
                               Harvey L. Silbert
 
                                       16

                         STOCK PRICE PERFORMANCE GRAPH
 
    The  Stock  Price  Performance  Graph below  compares  the  cumulative total
returns of the Common Stock, the Standard and Poor's 500 Stock Index ("S&P 500")
and the Standard and Poor's 500 Property-Casualty Insurance Index ("S&P PC") for
a five year period. Stock price  performance is based on historical results  and
is  not necessarily indicative of future  stock price performance. The following
graph assumes $100 was invested at the close of trading on the last trading  day
preceding  the first day of the fifth preceding fiscal year in the Common Stock,
the S&P 500, and the S&P PC. The calculation of cumulative total return  assumes
reinvestment  of  dividends.  The  graph was  prepared  by  Standard  and Poor's
Compustat, which obtained factual  materials from sources believed  by it to  be
reliable,  but  which  disclaims  responsibility  for  any  errors  or omissions
contained in such data.  The Stock Price Performance  Graph shall not be  deemed
incorporated  by  reference  through  any  general  statement  incorporating  by
reference this proxy statement into any filings under the Securities Act of 1933
or under the Securities Exchange Act of  1934 and shall not otherwise be  deemed
to be filed under such Acts.
 
                      COMPARATIVE FIVE-YEAR TOTAL RETURNS
                           ZENITH, S&P 500 AND S&P PC
                     (PERFORMANCE RESULTS THROUGH 12/31/96)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 


              ZNT      S&P 500    S&P PC
                        
1991          100.00     100.00     100.00
 
1992          124.08     107.62     117.11
 
1993          146.18     118.46     115.04
 
1994          155.16     120.03     120.67
 
1995          152.60     165.13     163.38
 
1996          203.11     203.05     198.53

 
                                       17

             INFORMATION RELATING TO INDEPENDENT PUBLIC ACCOUNTANTS
 
    Zenith's  independent auditor  for fiscal  year 1996  was Coopers  & Lybrand
L.L.P. and,  upon  the recommendation  of  the  Audit Committee,  the  Board  of
Directors   of  Zenith  has  selected  Coopers  &  Lybrand  L.L.P.  as  Zenith's
independent auditor for fiscal year 1997.
 
    Representatives of Coopers &  Lybrand L.L.P. are expected  to be present  at
the  Annual  Meeting and  will  have an  opportunity  to respond  to appropriate
questions and to make a statement if they desire to do so.
 
    For information  concerning  Zenith's  Audit  Committee,  see  "Election  of
Directors" above.
 
                    STOCKHOLDER PROPOSALS AT THE NEXT ANNUAL
                            MEETING OF STOCKHOLDERS
 
    Stockholders   of  Zenith  who  intend   to  submit  proposals  to  Zenith's
stockholders at the next Annual Meeting of Stockholders to be held in 1998  must
submit  such proposals to  Zenith no later  than November 25,  1997 in order for
them to be included  in Zenith's proxy materials  for such meeting.  Stockholder
proposals  should be submitted to Zenith  National Insurance Corp., 21255 Califa
Street, Woodland Hills, California 91367, Attention: Secretary.
 
                                          By Order of the Board of Directors
 
                                          JOHN J. TICKNER
                                          SECRETARY
 
Dated: March 25, 1997
 
                                       18


                                    [LOGO]
                                    PROXY

              THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS
                       OF ZENITH NATIONAL INSURANCE CORP.
             FOR THE ANNUAL MEETING OF STOCKHOLDERS, MAY 15, 1997

     The undersigned stockholder hereby appoints Jack M. Ostrow, Harvey L. 
Silbert, and Stanley R. Zax and each or any of them (each with full power of 
substitution), proxies for the undersigned to vote all shares of Common Stock 
of Zenith National Insurance Corp. ("Zenith") owned by the undersigned at the 
Annual Meeting of Stockholders to be held on Thursday, May 15, 1997, at 9:00 
a.m., at the offices of Zenith, 21255 Califa Street, Woodland Hills, 
California, and at any adjournments thereof, in connection with the matters 
set forth in the Notice of Annual Meeting and Proxy Statement dated March 25, 
1997 (the "Proxy Statement"), copies of which have been received by the 
undersigned.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN ACCORDANCE WITH THE 
INSTRUCTIONS OF THE STOCKHOLDER, BUT IF NO INSTRUCTIONS ARE GIVEN THIS PROXY 
WILL BE VOTED FOR ELECTION OF DIRECTORS AS PROVIDED BY ZENITH'S PROXY 
STATEMENT AND IN ACCORDANCE WITH THE DISCRETION OF THE PROXIES ON SUCH OTHER 
MATTERS AS MAY PROPERLY COME BEFORE THE MEETING.

IN THE EVENT OF CUMULATIVE VOTING IN THE ELECTION OF DIRECTORS, THE PROXIES 
MAY DISTRIBUTE THE VOTES REPRESENTED BY THIS PROXY AMONG THE NOMINEES IN SUCH 
PROPORTION AS THEY SEE FIT.

         (Continued and to be marked, signed and dated on other side)

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                                                        Please mark
                                                        your votes as   /X/
                                                        indicated in
                                                        this example


          FOR all nominees listed below (except   WITHHOLD AUTHORITY to vote for
          as marked to the contrary below)        all nominees listed below


1.  Election of Directors:   / /                                / /

George E. Bello, Max M. Kampelman, Jack M. Ostrow, William Steele Sessions, 
Harvey L. Silbert, Robert M. Steinberg, Saul P. Steinberg, Gerald Tsai, Jr. 
and Stanley R. Zax.

2.  In their discretion, upon such other matters as may properly come before 
the meeting.


(INSTRUCTION: To withhold authority for any individual nominee write that 
nominee's name in the space provided below.)

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                                       Dated:______________________,1997

                                       Signature________________________

                                       Signature_________________________

                                      Note Please sign EXACTLY as your name
                                      appears herein. When signing as attorney,
                                      executor, administrator, trustee or 
                                      guardian, please give your full title as
                                      such. If executed by a corporation, an
                                      authorized officer should sign, and the
                                      corporate seal should be affixed. A proxy
                                      for shares held in joint ownership should
                                      be signed by each joint owner.

Please mark, sign and date this Proxy and return it promptly in the accompanying
      envelope, which requires no postage if mailed in the United States.

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