HARLEYSVILLE GROUP INC
DEF 14A, 1999-03-23
FIRE, MARINE & CASUALTY INSURANCE
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                           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 Section 240.14a-11(c) or Section 240.14a-12

                            Harleysville Group Inc.
- --------------------------------------------------------------------------------
               (Name of Registrant as Specified In Its Charter)


- --------------------------------------------------------------------------------
   (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

   
Payment of Filing Fee (Check the appropriate box):

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         pursuant to Exchange Act Rule 0-11 (Set forth the amount on which
         the filing fee is calculated and state how it was determined):


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[_]  Fee paid previously with preliminary materials.
     
[_]  Check box if any part of the fee is offset as provided by Exchange
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     was paid previously. Identify the previous filing by registration statement
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<PAGE>
 
                                                              Walter R.
                                                              Bateman
Harleysville Group Inc. Logo
                                                              Chairman of the
                                                              Board,
                                                              President & CEO
                                                              355 Maple Ave.
                                                              Harleysville, PA
                                                              19438-2297
 
                                            March 23, 1999
 
Dear Harleysville Group Inc. Stockholder:
 
      You are cordially invited to attend the Annual Meeting of the
Stockholders of Harleysville Group Inc. at the Company's headquarters, 355
Maple Avenue, Harleysville, Pennsylvania on Wednesday, April 28, 1999, at
10:00 A.M.
 
      At the meeting, stockholders will vote on two items of business. Those
items and the vote the Board of Directors recommends are:
 
<TABLE>
<CAPTION>
                         Item                  Recommended Vote
                         ----                  ----------------
     <C> <S>                                   <C>
     1.  election of two directors, and              FOR
     2.  approval of Year 2000 Directors'
         Stock Option Program                        FOR
</TABLE>
 
      We will also review Harleysville Group Inc.'s 1998 performance and will
be pleased to answer your questions about the Company. Enclosed with this
proxy statement are your proxy card and the 1998 Annual Report.
 
      We look forward to seeing you on April 28, 1999. Whether or not you plan
to attend the meeting in person, it is important that you complete and return
the enclosed proxy card in the envelope provided in order that your shares can
be voted at the meeting as you have instructed.
 
                                           Sincerely,
 
                                           /s/ Walter R. Bateman
 
                                           Walter R. Bateman
<PAGE>
 
                                                              Roger A. Brown
Harleysville Group Inc. Logo                                  Secretary
                                                              355 Maple Ave.
                                                              Harleysville, PA
                                                              19438-2297
 
                   NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
                           TO BE HELD APRIL 28, 1999
 
To the Stockholders of
 HARLEYSVILLE GROUP INC.
 
      The Annual Meeting of Stockholders of HARLEYSVILLE GROUP INC. will be
held at 10:00 A.M., Wednesday, April 28, 1999 at its headquarters at 355 Maple
Avenue, Harleysville, Pennsylvania 19438, for the following purposes:
 
      1.    To elect two Class C directors;
      2.    To approve the Year 2000 Directors' Stock Option Program; and
      3.    To transact such other business as may properly be presented.
 
      Your Board recommends a vote in favor of the nominated directors and in
favor of approval of the Year 2000 Directors' Stock Option Program.
 
      The Board of Directors has fixed the close of business on March 5, 1999
as the record date for determining the stockholders entitled to vote at the
Annual Meeting.
 
      For further information on the individuals nominated as directors and on
the Year 2000 Directors' Stock Option Program, please read the proxy statement
that follows.
 
      This notice, the proxy statement, the proxy card and the 1998 Annual
Report to Stockholders are being distributed to stockholders on or about March
23, 1999.
 
                                            By Order of the Board of
                                             Directors,
 
                                            /s/ Roger A. Brown
                                            Roger A. Brown
                                            Secretary
 
March 23, 1999
Harleysville, Pennsylvania
<PAGE>
 
                               Table of Contents
 
<TABLE>
<S>                                                                 <C>
ANNUAL MEETING OF STOCKHOLDERS                                        1
  Purpose of Proxy Statement                                          1
  Matters to be Voted Upon                                            1
  Voting Procedures                                                   1
  Other Information                                                   3
 
BOARD OF DIRECTORS                                                    3
  Corporate Governance Practices                                      3
 
  Item 1. Election Of Directors                                       5
  Biographies of Directors and Nominees                               6
  Board and Committee Meetings                                        8
  Compensation of Directors                                           9
  Stock Acquisition Programs                                         10
 
  Item 2. Approval Of The Year 2000 Directors' Stock Option Program  12
  Operation Of The Program                                           12
  Federal Income Tax Consequences                                    14
  Estimated Benefits                                                 14
  Vote Required                                                      15
 
OWNERSHIP OF COMMON STOCK                                            15
  Table I - 5% Stockholders                                          15
  Table II - Beneficial Ownership of Directors & Executive Officers  16
 
REPORT OF COMPENSATION AND PERSONNEL DEVELOPMENT COMMITTEE           17
  Compensation Philosophy                                            17
  Compensation Methodology                                           17
  Chief Executive Officer Compensation                               20
  Internal Revenue Code Impact                                       22
 
STOCK PERFORMANCE CHARTS                                             23
 
SUMMARY COMPENSATION TABLE                                           25
 
OPTION GRANTS IN 1998                                                27
 
OPTION EXERCISES & YEAR-END VALUES                                   28
 
LONG-TERM INCENTIVE PLAN                                             29
 
PENSION PLANS                                                        30
 
TRANSACTIONS WITH HARLEYSVILLE MUTUAL                                32
 
SECTION 16 REPORTING COMPLIANCE                                      33
</TABLE>
<PAGE>
 
                         ANNUAL MEETING OF STOCKHOLDERS
 
Purpose of Proxy Statement
 
      The Board of Directors of Harleysville Group is soliciting your proxy for
voting at the Annual Meeting of Stockholders to be held April 28, 1999 at the
headquarters of the Company. This proxy statement has been mailed to
stockholders on March 23, 1999.
 
Matters to be Voted Upon
 
      At the Annual Meeting, stockholders will vote on the election of two
directors, Walter R. Bateman and William E. Strasburg, and on the approval of
the Year 2000 Directors' Stock Option Program.
 
      The Board of Directors knows of no other matters to be presented for
stockholder action at the meeting. If other matters are properly presented at
the meeting, your signed and dated proxy card authorizes Roger A. Brown, Bruce
J. Magee and Dennis M. Hyland to vote your shares in accordance with their best
judgment.
 
Voting Procedures
 
Who May Vote
 
      Stockholders as of the close of business on March 5, 1999 (the Record
Date) are entitled to vote at the Annual Meeting. Each share of common stock is
entitled to one vote.
 
How to Vote
 
      Stockholders may vote
    .  In person
    .  By mail by completing and returning the proxy card
 
Vote Needed for Election of Directors and Approval of the Year 2000 Directors'
Stock Option Program
 
      The two nominees for directors receiving the highest number of votes will
be elected. The Year 2000 Directors' Stock Option Program will be approved if
it receives affirmative votes representing a simple majority of all shares
present and entitled to vote. As of the Record Date, Harleysville Mutual
Insurance Company owned 15,609,386 shares (or approximately 53.5%) of
Harleysville Group's outstanding stock. Harleysville Mutual has advised
Harleysville Group that it will vote in favor of the election of the nominated
directors and for approval of the Year 2000 Directors' Stock Option Program. As
a result, the nominated directors will be elected and the Year 2000 Directors'
Stock Option Program will be approved regardless of the votes of the other
stockholders.
 
                                       1
<PAGE>
 
Quorum to Transact Business
 
      A quorum for the transaction of business at the Annual Meeting consists
of the majority of the issued and outstanding shares of the Company's common
stock, present in person or represented by proxy. As of the Record Date,
29,261,311 shares of Harleysville Group's common stock were issued and
outstanding. If you attend in person and indicate your presence, or mail in a
properly signed and dated proxy card, you will be part of the quorum.
 
Voting of Shares via Proxy
 
      If you have submitted a properly executed proxy by mail and are part of
the quorum, your shares will be voted as you indicate. However, if you sign,
date and mail in your proxy card without indicating how it should be voted on
the election of the directors or approval of the Year 2000 Directors' Stock
Option Program, your shares will be voted in favor of the election of the two
nominated directors and for approval of the Program. If you sign, date and mail
your proxy card and withhold voting for any or all of the nominated directors
(as explained on the proxy card), your vote will be recorded as being withheld
but it will have no effect on the outcome of the election. If you sign, date
and mail your proxy card and mark it "abstain" regarding approval of the Year
2000 Directors' Stock Option Program, your shares will not be voted but such
action will have the effect of a vote against approval. A broker non-vote will
also have the effect of a vote against the approval of the Year 2000 Directors'
Stock Option Program. A broker non-vote occurs when a broker votes on some
matters on the proxy card but not on others because the broker does not have
authority to do so.
 
Revocation of Proxy
 
      If you later decide to revoke or change your proxy, you may do so by: (1)
sending a written statement to that effect to the Secretary of the Company; or
(2) submitting a properly signed proxy with a later date; or (3) voting in
person at the Annual Meeting.
 
Substantial Owners of Stock
 
      In addition to Harleysville Mutual, other stockholders that own 5% or
more of Harleysville Group common stock are Capital Guardian Trust Company and
its affiliate Capital International, Inc. which together beneficially own 5.0%
of Harleysville Group common stock. Please see the chart on page 15 for more
details.
 
Duplicate Proxy Statements and Cards
 
      You may receive more than one proxy statement, proxy card or Annual
Report. This duplication will occur if title to your shares is registered
differently or your shares are in more than one type of account maintained by
ChaseMellon Shareholder Services, the Company's transfer agent. To have all
your shares voted, please sign and return all proxy cards. If you wish to have
your accounts registered in the same name(s) and address, please call
ChaseMellon Shareholders Services at 1-800-851-9677, or contact ChaseMellon
through its website: www.chasemellon.com.
 
                                       2
<PAGE>
 
Confidential Voting Policy
 
      Harleysville Group maintains a policy of keeping stockholder votes
confidential.
 
Other Information
 
Stockholder Proposals
 
      An eligible stockholder who wants to have a qualified proposal considered
for inclusion in the proxy statement for the 2000 Annual Meeting of
Stockholders must notify the Secretary of the Company. The proposal must be
received at the Company's offices no later than November 18, 1999. A
stockholder must have been a registered or beneficial owner of at least 1% of
the Company's outstanding common stock or stock with a market value of $2,000
for at least one year prior to submitting the proposal, and the stockholder
must continue to own such stock through the date on which the meeting is held.
A stockholder who has not timely submitted a proposal for inclusion in the
proxy statement and who plans to present a proposal at the 2000 Annual Meeting
of Stockholders must provide notice of the matter to the Secretary of the
Company by February 2, 2000, or the persons authorized under management proxies
will have discretionary authority to vote and act according to their best
judgment on said matter.
 
Expenses of Solicitation
 
      Harleysville Group pays the cost of preparing, assembling and mailing
this proxy-soliciting material. In addition to the use of the mail, proxies may
be solicited personally, by telephone or by other electronic means by
Harleysville Group officers and employees without additional compensation.
Harleysville Group pays all costs of solicitation, including certain expenses
of brokers and nominees who mail proxy material to their customers or
principals.
 
Independent Public Accountants
 
      Representatives of KPMG Peat Marwick, LLP, the independent public
accountants that audited Harleysville Group's 1998 financial statements, will
attend the Annual Meeting. They will have the opportunity to make a statement,
if they desire to do so, and will respond to any appropriate questions
presented by stockholders.
 
                               BOARD OF DIRECTORS
 
Corporate Governance Practices
 
      In order to promote the highest standards of management for the benefit
of stockholders, the Board of Directors of Harleysville Group Inc. follows
certain governance practices regarding how the Board conducts its business and
fulfills its duties. These practices are:
 
                                       3
<PAGE>
 
Board Size and Composition
 
      The Board presently consists of 7 directors comprised of 6 non-employee
directors and one employee director. The Board believes that the Board should
consist of at least 7 directors and that, because some members of the Board are
also members of the Board of Harleysville Mutual, the total of the two Boards
should be no more than 12. The Board further believes that of the maximum total
board membership of 12, no more than 3 should be employee directors.
 
Qualifications of Directors
 
      The Board is responsible for identifying candidates to be directors. The
Nominating Committee, with input from the Chairman and the Chief Executive
Officer, screens director candidates. In overseeing candidates for election,
the Committee, and subsequently the Board, looks for those with the skills,
time and motivation to serve as a director. The Committee seeks individuals
with integrity, mature and independent judgment, analytical ability, objective
and sound business judgment, familiarity with issues important to the Company,
absence of conflicts of interest, ability to work with others and social
consciousness, among other characteristics. There are currently no
relationships between a non-employee director and Harleysville Group or any
other entity that would be construed as compromising the independence of any
director.
 
Director Retirement
 
      It is Board policy that an employee director should resign as a director
upon resignation or retirement from employment with Harleysville Group, unless
the Nominating Committee requests the individual to remain as a director. Each
director, pursuant to the by-laws of the Company, must retire from the Board at
the next annual meeting following his or her 72nd birthday.
 
Stock Ownership
 
      Each director is expected to have a significant investment in the
Company's common stock. To assist in this goal, the Company, with stockholder
approval, grants stock options to directors, as well as offers a stock purchase
plan. (See pages 10 and 11 for details).
 
Leadership
 
      The Board retains the right to exercise the judgment to combine or
separate the offices of the Chairman of the Board and the Chief Executive
Officer. Currently, the Chairman of the Board is also the Chief Executive
Officer.
 
Performance Evaluations
 
      Each year the non-employee directors of the Company meet to review the
Chief Executive Officer's performance. Each such director prepares a written
 
                                       4
<PAGE>
 
evaluation of the Chief Executive Officer's performance which is submitted to
the Chairman of the Compensation and Personnel Development Committee who
compiles a report of the views of the non-employee directors. The non-employee
directors then meet privately to discuss the Chief Executive Officer's
performance and to agree on the content of the appraisal which the members of
the Compensation and Personnel Development Committee later review with the
Chief Executive Officer.
 
      In addition, each year the Nominating Committee will conduct an
assessment of the Board's effectiveness and make a report on that subject to
the Board, along with any recommendations to modify the Company's Corporate
Governance Practices.
 
Director Compensation
 
      Annually, Harleysville Group's management presents a report to the
Compensation and Personnel Development Committee that compares the compensation
of Harleysville Group's Board to compensation of directors at peer companies,
which are benchmarks for the Company's financial performance.
 
Board Agendas and Meetings
 
      The Chairman and Chief Executive Officer establishes the agendas for
Board meetings but each director is free to suggest items for the agenda, and
each director is free to raise subjects at any Board meeting that are not on
the agenda for that meeting. The Executive Committee of the Board reviews and
approves Harleysville Group's yearly operating plan and specific financial
goals at the start of each year, and the Board monitors performance throughout
the year. The Board also reviews long-range strategic issues at regular Board
meetings as well as at periodic meetings devoted solely to strategic issues.
 
Executive Sessions of Outside Directors
 
      The non-employee directors meet privately in executive sessions to review
the performance of the Chief Executive Officer and to review recommendations of
the Compensation and Personnel Development Committee concerning compensation
for the employee directors.
 
Item 1. Election Of Directors
 
      Harleysville Group's Board of Directors currently consists of 7
directors. Each director is elected for a three-year term, except that if a
nominee will attain the age of 72 within the next two years following such
nominee's election, such nominee will be nominated for a term of one or two
years, as the case may be, to expire on the first Annual Meeting date following
the nominee's reaching age 72. The Board of Directors is divided into three
classes. The current three-year terms of Class A, B and C directors expire in
the years 2001, 2000 and 1999, respectively.
 
                                       5
<PAGE>
 
      Two Class C directors are to be elected at the 1999 Annual Meeting. The
nominees are:
 
      Class C
 
<TABLE>
<CAPTION>
Name                       Age           Director Since           Year Term Will Expire
- ----                       ---           --------------           ---------------------
                                                                       if Elected
                                                                       ----------
<S>                        <C>           <C>                      <C>
Walter R. Bateman           51                1992                        2002
William E. Strasburg        71                1986                        2000
</TABLE>
 
Your Board of Directors recommends a vote "FOR" the Nominated Directors.
 
If a nominee is unavailable for election, stockholders will vote for another
nominee proposed by the Board or the Board may reduce the number of directors
to be elected at the meeting.
 
      Directors continuing in office are:
 
      Class A
 
<TABLE>
<CAPTION>
Name                 Age Director Since Year Term Will Expire
- ----                 --- -------------- ---------------------
<S>                  <C> <C>            <C>
Lowell R. Beck        64      1996              2001
Robert D. Buzzell     65      1992              2001
Joseph E. McMenamin   67      1999              2001
</TABLE>
 
      Class B
 
<TABLE>
<CAPTION>
Name               Age Director Since Year Term Will Expire
- ----               --- -------------- ---------------------
<S>                <C> <C>            <C>
Michael L. Browne   52      1986              2000
Frank E. Reed       64      1986              2000
</TABLE>
 
Biographies of Directors and Nominees
 
      Mr. Bateman, who was elected Chairman of the Board of both Harleysville
Group and Harleysville Mutual in August 1998, has served as a director of
Harleysville Group and Harleysville Mutual since November 1992 when he was also
elected President and Chief Operating Officer of both companies. Mr. Bateman
was elected President and Chief Executive Officer of Harleysville Group and
Harleysville Mutual, effective January 1, 1994. From July 1988 to July 1991,
Mr. Bateman was in charge of field operations for Harleysville Group and
Harleysville Mutual. He was Executive Vice President of both companies and
responsible for all insurance operations from July 1991 to November 1992.
 
      Mr. Strasburg became a director of Harleysville Group in February 1986.
Mr. Strasburg is also a director of Harleysville Mutual, a position he has held
since 1975. In 1989, Mr. Strasburg became Publisher Emeritus of Montgomery
Publishing
 
                                       6
<PAGE>
 
Company, a newspaper publishing firm located in Fort Washington, Pennsylvania.
In 1991, Mr. Strasburg retired as Vice President of Independent Publications,
Inc., and retired as a member of its Board of Directors in December 1994.
 
      Mr. Beck was elected a director of Harleysville Group in August 1996.
From 1982 until his retirement in 1996, Mr. Beck was President of the National
Association of Independent Insurers, an insurance industry trade group
headquartered in Des Plaines, Illinois. Prior to 1982 he served in various
executive capacities with the American Bar Association in Chicago, Illinois.
 
      Dr. Buzzell was elected a director of Harleysville Group and Harleysville
Mutual in April 1992. Dr. Buzzell is currently Distinguished Visiting Professor
of Marketing at Georgetown University. He is also Distinguished Professor of
Marketing, George Mason University, School of Business Administration, Fairfax,
Virginia commencing that position in September 1993. Prior to that position, he
was Sebastian S. Kresge Professor of Business Administration at Harvard
University, Graduate School of Business Administration. Dr. Buzzell currently
serves on the Board of Directors of VF Corporation.
 
      Mr. McMenamin became a director of Harleysville Group and Harleysville
Mutual in January 1999. Mr. McMenamin was President and Chief Operating Officer
of the Keystone Insurance Companies, Philadelphia, Pennsylvania from 1983 until
he retired in 1996. He served as a Board member of the Keystone Insurance
Companies until December 1998 when he joined the Harleysville boards.
 
      Mr. Browne was elected a director of Harleysville Group in February 1986.
From 1980 to 1983, Mr. Browne was the Insurance Commissioner of the
Commonwealth of Pennsylvania. In 1983, Mr. Browne joined the law firm of Reed,
Smith, Shaw & McClay in Philadelphia, Pennsylvania, as a partner. He became
managing partner in January 1993.
 
      Mr. Reed was elected a director of Harleysville Group in February 1986
and has been a director of Harleysville Mutual since 1985. From 1984 to March
1990, Mr. Reed served as President and Chief Operating Officer of First
Pennsylvania Corporation and First Pennsylvania Bank, Philadelphia,
Pennsylvania. Beginning in March 1990, as a result of a merger between First
Pennsylvania Corporation and CoreStates Financial Corp., Mr. Reed became
President and Chief Executive Officer of CoreStates Philadelphia National Bank.
Mr. Reed retired from that position in March 1995. Mr. Reed was Chairman of the
Board and a director of 360(degrees) Communications Company until its merger in
July 1998 with Alltel Corporation, of which he is now a director.
 
                                       7
<PAGE>
 
Board and Committee Meetings
 
     The Board met six times in 1998. A description of the Committees
follows the table of members and meetings.
 
                    1998 BOARD COMMITTEE MEMBERS & MEETINGS
 
 
<TABLE>
<CAPTION>
  Name                  Audit Compensation Coordinating Executive Finance Nominating
                                   &
                               Personnel
                              Development
- ------------------------------------------------------------------------------------
  <S>                   <C>   <C>          <C>          <C>       <C>     <C>
  Walter R. Bateman                                          X*       X*
- ------------------------------------------------------------------------------------
  Lowell R. Beck           X                     X                             X
- ------------------------------------------------------------------------------------
  Michael L. Browne        X        X            X           X        X
- ------------------------------------------------------------------------------------
  Robert D. Buzzell                 X                                          X*
- ------------------------------------------------------------------------------------
  Frank E. Reed                                  X*          X        X
- ------------------------------------------------------------------------------------
  William E. Strasburg              X*                       X
- ------------------------------------------------------------------------------------
  Number of
  Meetings in 1998         3        5            1           7        8        5
</TABLE>
 
 *Denotes Chairperson of the Committee; the Audit Committee Chair was vacant as
 of December 31, 1998.
 
     The Audit Committee reviews the performance and independence of
Harleysville Group's independent accounting firm, makes an annual
recommendation to the Board of Directors with respect to the appointment
of such accounting firm, approves the general nature of the services to
be performed by such accounting firm and solicits and reviews the
accounting firm's recommendations. The Audit Committee also consults with
Harleysville Group's internal audit department and periodically reviews
the relationships among that department, Harleysville Group's management
and Harleysville Group's independent accountants.
 
     The Compensation and Personnel Development Committee reviews and
determines compensation policies; reviews and recommends executive
compensation changes; establishes awards under and determines
participants in the Equity Incentive Plan, the Senior Management
Incentive Bonus Plan, and the Long-Term Incentive Plan; and oversees
Harleysville Group's management development and succession program.
 
     The Coordinating Committee is generally responsible for reviewing
material transactions between Harleysville Group and Harleysville Mutual.
It is currently composed of two individuals who are solely Harleysville
Group directors and three individuals who are solely Harleysville Mutual
directors plus a chairperson who is on the board of both companies. No
material inter-company transaction can occur until
 
                                       8
<PAGE>
 
a majority of both Harleysville Group directors and Harleysville Mutual
directors on the Committee approves a transaction. The decisions of the
Coordinating Committee are binding on Harleysville Group and Harleysville
Mutual.
 
      The Executive Committee meets during the intervals between meetings of
the Board of Directors and has the right and authority to exercise the full
powers of the Board of Directors.
 
      The Finance Committee establishes overall investment policies and
guidelines, and reviews and approves investments made by Harleysville Group.
 
      The Nominating Committee considers and recommends nominees to the Board
for election as a director, as well as assesses the effectiveness of the Board
and corporate governance practices. The Nominating Committee will consider
recommendations for nominees from stockholders, who should submit such
recommendations in writing to the Secretary of Harleysville Group.
 
Compensation of Directors
 
      Employee directors receive no additional compensation for serving on the
Board or a Committee.
 
      Non-employee directors receive the following fees:
 
 
<TABLE>
<CAPTION>
          Type of Compensation          As of April 1998 As of April 1999
- -------------------------------------------------------------------------
  <S>                                   <C>              <C>
  Annual Retainer                           $19,000          $21,000
- -------------------------------------------------------------------------
  Board Attendance Fee per Meeting          $ 1,000          $ 1,250
- -------------------------------------------------------------------------
  Committee Attendance Fee per Meeting      $ 1,000          $ 1,000
- -------------------------------------------------------------------------
  Attendance Fee per 2nd & Subsequent       $   650          $   650
  Meeting
- -------------------------------------------------------------------------
  Annual Retainer for Committee Chair       $ 3,500          $ 3,500
</TABLE>
 
 
      Non-employee directors are reimbursed for out-of-pocket expenses. A non-
employee director who serves on both the Harleysville Group and Harleysville
Mutual Boards receives only one retainer and, if the Boards or the same
Committees of Harleysville Group and Harleysville Mutual meet on the same day,
the non-employee director receives only one attendance fee. In either case, the
retainer or attendance fee is allocated equally to Harleysville Group and
Harleysville Mutual.
 
                                       9
<PAGE>
 
Stock Acquisition Programs
 
Directors' Stock Option Programs
 
      In 1990, Harleysville Group adopted the 1990 Directors' Stock Option
Program (the "1990 Program"), which provided for the issuance of an aggregate
of 94,500 shares of common stock, subject to adjustment for stock splits or
other changes. Under the 1990 Program, non-qualified stock options to purchase
6,300 shares were awarded to all non-employee directors of Harleysville Group
and Harleysville Mutual during the period 1990 through May 1994. The options
vested and became exercisable at the rate of 20% per year of active Board
service. The option price per share is 100% of the fair market value of a share
of common stock on the date of grant. The 1990 Program is administered by the
Compensation and Personnel Development Committee of the Board of Directors of
Harleysville Group. The Committee had no discretion with regard to the
eligibility or selection of directors to receive options under the 1990
Program, the number of shares of stock subject to such options under the 1990
Program, or the purchase price thereunder. On February 1, 1999, there were
44,100 shares subject to such options outstanding under this program and the
range of per share exercise prices was $7.50 to $14.00. The 1990 Program does
not provide for stock appreciation rights.
 
      In 1994, Harleysville Group adopted the 1995 Directors' Stock Option
Program (the "1995 Program"), which provided for the issuance of an aggregate
of 130,000 shares of common stock subject to adjustment for stock splits or
other changes. Except for options already granted under the 1990 Program, the
1995 Program superseded the 1990 Program. Under the 1995 Program, on May 24,
1995, each non-employee director of Harleysville Group and Harleysville Mutual
received a one-time grant of 10,000 non-qualified stock options, less the
amount of non-vested options, if any, under the 1990 Program on May 24, 1995 at
the then fair market value and option price of $12.50. A newly elected non-
employee director or an employee director who becomes a non-employee director
of Harleysville Group or Harleysville Mutual will also receive a one-time grant
of 10,000 non-qualified stock options at the first May Board meeting following
his or her election or becoming a non-employee director. The total options
granted to date are 112,440 with 90,960 still outstanding. The options vest at
the rate of 20% per year of active Board service with the first 20% vesting as
of the date of grant, although no option is exercisable until six months after
the date of grant. The 1995 Program is administered by the Compensation and
Personnel Development Committee of the Board of Directors of Harleysville
Group. The Committee has no discretion with regard to the eligibility or
selection of directors to receive options under the 1995 Program, the number of
shares of stock subject to such options under the 1995 Program, or the purchase
price thereunder. The 1995 Program does not provide for stock appreciation
rights.
 
      In February 1999, the Board adopted the Year 2000 Directors' Stock Option
Program, subject to submission to stockholders for approval at the Annual
Meeting. Please see page 12 for a description of the program.
 
                                       10
<PAGE>
 
Directors' Equity Award Program
 
      Each Harleysville Group Board member who was a Board member on April 25,
1996 and remained an active Board member on August 28, 1996 received a grant of
5,646 shares of Harleysville Group common stock restricted against transfer and
subject to forfeiture until the first to occur of his or her retirement from
the Board after attaining age 72, death or disability. A total of 45,168 shares
were initially awarded to eight directors who possess the right to vote the
shares and receive dividends thereon. Concurrently, the Board determined that
it would no longer elect any current or future director as a Director Emeritus.
Formerly, a director of Harleysville Group, upon ceasing to be a Board member
as of the annual meeting following attainment of age 72, in accordance with the
by-laws, was eligible to be elected a Director Emeritus for up to three one-
year terms. Director Emeriti were paid a retainer and attendance fees for
attendance at the Board meetings with re-election being contingent upon
satisfactory attendance at the Board meetings. Directors' current holdings of
restricted stock are set forth on the chart on page 16.
 
Directors' Stock Purchase Plan
 
      In 1996, Harleysville Group adopted the Directors' Stock Purchase Plan,
which permits non-employee directors of Harleysville Group and Harleysville
Mutual to purchase Company stock at the lower of 85% of the fair market value
of the shares at the start or end of a six-month subscription period, which
runs from July 15 to January 14, and January 15 to July 14. Directors are
permitted to contribute, through withholding from fees or a lump sum payment,
up to $20,000 per subscription period with the number of shares, including
fractional shares, purchased being equal to the dollar amount contributed,
divided by the purchase price. Two hundred thousand shares of Harleysville
Group common stock have been reserved for this program. During the five
subscription periods since its inception, a total of 53,683 shares have been
purchased by directors. The Plan provides for up to 20 subscription periods.
 
                                       11
<PAGE>
 
Item 2. Approval Of The Year 2000 Directors' Stock Option Program
 
      On February 24, 1999, the Board of Directors adopted, subject to
stockholder approval at the 1999 Annual Meeting, the Year 2000 Directors' Stock
Option Program (the "Y2000 Program"). No options under this program have been
or will be granted until approval by the stockholders.
 
      The purpose of the Y2000 Program is to attract and motivate non-employee
directors of Harleysville Group and Harleysville Mutual. A further purpose of
the Y2000 Program is to link compensation of non-employee directors to the
growth of Harleysville Group.
 
      Harleysville Group has previously adopted stock option plans for non-
employee directors. Descriptions of those programs and the number of options
granted thereunder are found on pages 10 and 11 above.
 
Operation Of The Program
 
      Stock options are the right to purchase, for cash or previously owned
shares of common stock, Harleysville Group's common stock at the fair market
value at the close of business on the day of grant. The per share market value
of the common stock on March 5, 1999 was $19.75.
 
      A total of 123,500 shares of common stock will be reserved and available
for use under the Y2000 Program, subject to adjustment for stock splits or
other changes discussed below. Options to purchase 2,500 shares are to be
awarded at the May 2000 Board of Directors meeting, and at each May Board
meeting for the next four successive years to the then current non-employee
directors of Harleysville Group and Harleysville Mutual, provided that, if an
incumbent director has options under the 1995 Program that vest in the same
year as an award of options under this Program, then the amount of shares that
are awarded in that year shall be reduced by the number of shares that vest
that year under the 1995 Program. At present there are 9 non-employee directors
of Harleysville Group and Harleysville Mutual. Options to purchase 2,500 shares
will be granted to future non-employee directors of Harleysville Group and
Harleysville Mutual at the first May Board meeting following their eligibility
to participate in the Y2000 Program and at each May Board meeting thereafter
occurring before or in May 2004. To the extent that insufficient shares would
exist at any May Board meeting to grant a full award of 2,500 shares to all
directors, then the remaining shares will be divided equally among the then
current directors.
 
      Options shall vest and become exercisable immediately.
 
      The shares available under the Y2000 Program may be either authorized but
unissued shares or shares acquired by Harleysville Group. The authorization of
123,500 shares for this Program will not, however, result in the creation of a
greater number of total shares of Company common stock reserved for options
than currently exists. The 123,500 shares on which options may be granted will
be
 
                                       12
<PAGE>
 
comprised of previously authorized but unissued shares under the prior
discontinued directors' stock option programs and from a reduction in shares
previously authorized but unissued under the Company's Equity Incentive Plan.
Distribution of shares will be made only after the registration of such shares
with the Securities and Exchange Commission ("SEC") or pursuant to exemptions
from registration under applicable SEC rules and regulations. If any option or
other interest granted under the Y2000 Program expires, terminates or is
forfeited before exercise, payment in full or final distribution, the shares
covered by the unexercised or unpaid portion may be used again for new grants
under the Y2000 Program.
 
      Proceeds received by Harleysville Group from the exercise of stock
options will be added to the general funds of the Company.
 
      The Y2000 Program will be administered by the Compensation and Personnel
Development Committee of the Board of Directors of Harleysville Group. (See
page 8 for the current members of that Committee.) The Committee will have the
general authority to interpret the provisions of the Y2000 Program and adopt
such rules as it deems necessary or desirable for the administration of the
Program, but the Committee will have no discretion with respect to the
eligibility or selection of directors to receive options under the Y2000
Program, the number of shares of stock subject to any such options under the
Y2000 Program, or the purchase price thereunder.
 
      Stock options under the Y2000 Program will be "non-qualified" for
purposes of the Internal Revenue Code. The options have a term of 10 years from
the date of grant, subject to earlier termination in cases of death,
disability, retirement, or other termination of service. In the event of
retirement, disability or death of a director, the options are exercisable for
a period of 2 years after such event, but in no event after 10 years after
grant. In the event of other termination of service, options shall expire 120
days after such termination date, or on their stated expiration date, whichever
is earlier. All stock options shall be evidenced by notices or agreements which
may contain such other terms, not inconsistent with the Y2000 Program, as may
be established by the Committee.
 
      The Y2000 Program provides for adjustments in the 123,500 shares
available for the Y2000 Program, and in the outstanding awards granted pursuant
to the program, because of a stock split, stock dividend, merger,
consolidation, combination of shares or similar occurrence.
 
      The program may be suspended or terminated by the Board at any time, in
which case options previously granted under the Y2000 Program will remain in
effect in accordance with their terms and conditions. The Board may amend the
Y2000 Program for any reason, except that it may not, without stockholder
approval, change the selection or eligibility of directors to receive options
under the Y2000 Program, the number of shares of stock subject to any such
options under the Y2000 Program or the purchase price thereunder.
 
                                       13
<PAGE>
 
Federal Income Tax Consequences
 
      A director who receives a stock option under the Y2000 Program will not
realize any income, nor will Harleysville Group be entitled to a deduction for
federal income tax purposes, at the time of the grant or award. A director will
recognize ordinary income upon the date of exercise of the stock option in an
amount equal to the difference between the option price and the fair market
value on the date of exercise. Harleysville Group will be entitled to a
deduction equal to the amount the director is required to treat as ordinary
income. If the exercise price of an option is paid by surrender of previously
owned shares, the basis of an equivalent number of new shares will have the
basis of the previously owned shares, while the additional new shares issued
have a basis equal to their fair market value on the date of exercise.
 
      When a director disposes of shares of common stock acquired under the
Y2000 Program, any amount received in excess of the value of the shares of
common stock on which the director was previously taxed will be treated as
long-term or short-term capital gain, depending upon the holding period of the
shares. If the amount received is less than that value, the loss will be
treated as long-term or short-term capital loss, depending upon the holding
period of the shares.
 
Estimated Benefits
 
      The following table summarizes the estimated benefits available to the
current Named Executive Officers and the identified groups under the Y2000
Program, to the extent such information is available or can be determined. Of
the directors nominated for election, none would be currently expected to
receive a grant of any options under this Program.
 
<TABLE>
<CAPTION>
                Name and Position                       Dollar           Number of
                                                       Value ($)         Units (#)
- ----------------------------------------------------------------------------------
 <S>                                                   <C>               <C>
 Non-Executive Director Group                          $551,250           73,500
- ----------------------------------------------------------------------------------
 All Others, including Named Executive
 Officers, Executive Group and Non-Executive               0                 0
 Officer Group
</TABLE>
 
 
The dollar value of the options to be awarded under the Y2000 Program cannot be
determined at this time because such value is based upon the per share exercise
price of the option awarded, which is 100% of the fair market value of a share
of common stock on the date of the grant. The dollar value figure shown above
is the value if 2,500 options had been granted to all current non-employee
directors at the May 1998 Board meeting, based on the then fair market value of
common stock of $24.50.
 
                                       14
<PAGE>
 
Vote Required
 
     The affirmative vote of a majority of the shares of common stock present
and entitled to vote at the Annual Meeting is required for the adoption of the
Y2000 Program.
 
     Your Board of Directors recommends a vote "FOR" the Year 2000 Directors'
Stock Option Program.
 
                           OWNERSHIP OF COMMON STOCK
 
                           Table I - 5% Stockholders
 
Those persons owning more than 5% of Harleysville Group stock as of December
31, 1998 are set forth below. On that date there were 29,150,518 shares of
Harleysville Group stock held by stockholders.
 
 
<TABLE>
<CAPTION>
     Name and Address     Voting Authority     Dispositive    Total Amount  Percent of
                                                Authority     of Beneficial   Class
                                                                Ownership
                  ------------------------------------------------------------------
                             Sole    Shared    Sole    Shared
- --------------------------------------------------------------------------------------
  <S>                     <C>        <C>    <C>        <C>    <C>           <C>
   Harleysville Mutual
    Insurance Company     15,609,386        15,609,386         15,609,386     53.5%
     Harleysville, PA
          19438
- --------------------------------------------------------------------------------------
     Capital Guardian
     Trust Company &       1,213,200         1,473,200          1,473,200      5.0%
  Capital International,
           Inc.
    11100 Santa Monica
    Blvd., Suite 1500
     Los Angeles, CA
          90025
</TABLE>
 
 
 
                                       15
<PAGE>
 
       Table II - Beneficial Ownership of Directors & Executive Officers
 
This table shows Harleysville Group stock holdings of Directors, Nominees,
Named Executive Officers (who are the CEO and the next four most highly paid
executive officers), and all executive officers as a group as of February 15,
1999. The "aggregate number of shares beneficially owned" listed in the second
column includes the numbers listed in the third and fourth columns. For a
description of the Restricted Stock, please see the Directors Equity Award
Program on page 11. On February 15, 1999, there were 29,259,031 shares of
Harleysville Group stock held by stockholders.
 
<TABLE>
<CAPTION>
            Name              Aggregate    Right to   Number of  Percent of
                                Number     Acquire    Shares of    Shares
                              Of Shares    w/in 60   Restricted  (less than
                             Beneficially    days    Stock Owned 1% unless
                                Owned     (number of             indicated)
                                           shares)
- ---------------------------------------------------------------------------
  <S>                        <C>          <C>        <C>         <C>
  Walter R. Bateman            168,824     109,600      5,646
- ---------------------------------------------------------------------------
  Lowell R. Beck                 9,250       6,000
- ---------------------------------------------------------------------------
  Michael L. Browne             25,077      16,300      5,646
- ---------------------------------------------------------------------------
  Robert D. Buzzell             23,738      15,040      5,646
- ---------------------------------------------------------------------------
  Joseph E. McMenamin                0           0
- ---------------------------------------------------------------------------
  Frank E. Reed                 29,184      16,300      5,646
- ---------------------------------------------------------------------------
  William E. Strasburg          33,848      16,300      5,646
- ---------------------------------------------------------------------------
  Mark R. Cummins               58,995      52,679
- ---------------------------------------------------------------------------
  Thomas E. Roden               76,133      61,238
- ---------------------------------------------------------------------------
  Spencer M. Roman              46,151      40,647
- ---------------------------------------------------------------------------
  Bruce J. Magee                54,796      41,891
- ---------------------------------------------------------------------------
  All directors & executive
   officers as a group (17)    705,901     516,134     28,230        2%
</TABLE>
 
Disclaimer of Beneficial Ownership
 
      The following directors and officers disclaim beneficial ownership of
certain shares included in the totals above. Michael Browne disclaims
beneficial ownership of 130 shares held by him as custodian for a minor child;
Thomas Roden disclaims beneficial ownership of 79 shares held by him as
custodian for a minor child; and Spencer Roman disclaims beneficial ownership
of 209 shares held by his spouse as custodian for a minor child and 60 shares
held by a stepson.
 
                                       16
<PAGE>
 
           REPORT OF COMPENSATION AND PERSONNEL DEVELOPMENT COMMITTEE
 
Compensation Philosophy
 
      The Compensation and Personnel Development Committee of the Board of
Directors (the "Compensation Committee"), which consists entirely of outside
directors as defined in section 162(m) of the Internal Revenue Code, has
established a management compensation program designed to further the
attainment of the Company's strategic goals of growth and profitability and
thus enhance shareholder value. In order to achieve these strategic goals, the
Company has identified four principles to guide its compensation program. The
program must:
 
 .     Attract, retain and motivate talented executives;
 .     Reward competencies and behaviors critical to the Company's success;
 .     Offer total compensation levels that are consistent with the performance
      of the executive measured against other executives both within the
      Company and within the industry;
 .     Focus executives on performance goals and measures that are the key to
      the Company's success by providing variable compensation programs linked
      to creation of shareholder value.
 
Compensation Methodology
 
      The Harleysville Group compensation program is designed to enable
Harleysville Group to fairly compete for talented and experienced staff with
companies of similar size whether publicly or privately held. Data from many
different insurance companies are employed to determine proper competitive
compensation levels for an organization the size of Harleysville. As a result,
the group from which data are gathered and used is not the same as the peer
group represented on the Stock Performance Charts which includes all NASDAQ
traded property/casualty companies regardless of size, or other
characteristics, although data from many of the same companies may be employed.
 
      Total compensation is comprised of fixed compensation (annual base
salary), variable compensation (annual and long-term incentive plans), and
stock options. In determining total compensation, Harleysville Group targets
fixed compensation at the market median, while total compensation is targeted
at the midpoint of the second quartile. This total compensation target is
designed to enable the organization to attract and retain high-performing
executives and to reward above average performance, while a flexible mix
between base salary and variable compensation permits higher potential of pay
for those positions where performance results are highly measurable and where
the value of those results to the Company is clear and significant.
 
      In order that compensation policies benefit all companies in the
organization, two Harleysville Mutual-only non-employee directors participate
in the determination of compensation philosophy, methodology and goals
applicable to executives. All decisions of the Compensation Committee regarding
fixed and variable compensation are subject to review by the Board of
Directors.
 
                                       17
<PAGE>
 
      The individual components of total compensation and how they function are
described below:
 
 .     Base Salary
 
          Consistent with the compensation philosophy, annual base salary is
    designed to be competitive within the industry. Each position in the
    Company is placed in an appropriate paygrade whose midpoint level is set
    at the median pay for that position when compared to the industry on a
    size adjusted basis. A salary range based on the midpoint is then
    developed for that paygrade. An individual officer's salary within his
    or her paygrade is determined each November for the following year and
    is based on his or her individual performance and that of the Company.
    To evaluate Company performance, the Compensation Committee compares the
    Company's overall corporate performance against the insurance industry
    in terms of comparison of return on equity, combined ratio and premium
    growth. The term combined ratio is a standard term of measurement in the
    property/casualty insurance industry and means the ratio produced by
    adding (1) the ratio of losses, loss adjustment expenses, and
    policyholder dividends to net earned premiums and (2) the ratio of
    underwriting expenses to net written premium. The figure then is
    expressed as a percentage.
 
 .     Annual Incentive Compensation
 
          The Company each year adopts targets under its Senior Management
    Incentive Compensation Plan in order to direct executive officer
    attention to the attainment of significant annual corporate goals. For
    the 1998 plan, the goals included: combined ratio goals for the entire
    Harleysville organization's property/casualty results; a return on
    equity goal; a premium growth goal; and service and processing
    timeliness goals. The weightings for each factor were: combined ratio
    30%; return on equity 30%; premium growth 25%; and service and
    processing goals 15%. The plan is designed to pay a target award at a
    level of 15% to 30% of annual salary depending on position when the
    target goals are achieved. Payouts may be as large as 200% of the target
    award if actual performance exceeds the target. Consistent with the
    Compensation Committee's philosophy, the size of the award range is
    determined for the Chief Executive Officer specifically and executive
    officers generally based on an analysis of the appropriate competitive
    total compensation package that is typically available for executive
    officers of a property/casualty insurance company of similar size. There
    is no payout under the Plan unless the combined after-tax net income as
    reported on the Combined Annual Statement of Harleysville Mutual
    Insurance Company and its affiliated property and casualty insurers plus
    after-tax net income resulting to Harleysville Group from management
    agreements is at least 2% of the combined net earned premium as shown on
    such statement. The Combined Annual Statement is a financial statement
    required to be filed with state insurance regulatory authorities. It
    includes financial information on a combined basis for all
    property/casualty insurance companies owned by
 
                                       18
<PAGE>
 
    Harleysville Group and Harleysville Mutual. The payouts in 1996, 1997
    and 1998 reflect that all the target goals were not fully attained in
    those years. For 1999, the Company has adopted distinct goals for the
    Chief Investment Officer that provide incentives for investment
    performance in addition to corporate performance goals. The goals and
    the weightings for each are 10% for combined ratio; 30% for return on
    equity; 50% for equity investment performance; and 10% for fixed income
    investment performance.
 
 .     Long-Term Incentive Compensation
 
          The Company has also established a Long-Term Incentive Plan
    designed primarily to reward those senior executive officers of
    Harleysville Group involved in establishing the Company's strategy for
    the attainment of long-term return on equity goals. Since the Plan's
    inception in 1988, target goals have been set each year for the next
    four-year period. Awards are designed to provide payments at the end of
    each successive four-year performance period in an amount that is a
    percentage of each participant's salary at January 1st of the first year
    of each period, with the amount of payment dependent upon a combination
    of Harleysville Group's annual rate of return on equity ("ROE") and
    written premium growth over the four-year period. Potential target
    awards for each year are designed to range from 15% to 45% of a
    participant's salary depending upon officer level. A target amount is
    payable if Harleysville Group's average ROE exceeds certain levels of
    targeted ROE. There is a maximum payment of 150% of target award if
    Harleysville Group's ROE exceeds certain higher levels of targeted ROE.
    If ROE falls between the target level and the maximum level, then the
    amount of the award is prorated accordingly. Once an ROE of 8% is
    achieved, an additional incentive award based on written premium growth
    takes effect. If less than the targeted level of ROE is reached, a
    reduced percentage of the target award may be granted. In the event that
    ROE falls below a stated level, a negative percentage of the target
    award will be assessed, and previously credited awards will be
    proportionately reduced. Under the terms of the Long-Term Incentive
    Plan, the Compensation Committee retains discretion, subject to plan
    limits, to modify the terms of outstanding awards to take into account
    the effect of unforeseen or extraordinary events and accounting changes.
    Awards, if earned, are paid in cash at the end of the four-year
    performance period. Cash payments made under awards for the four-year
    periods 1993-1996, 1994-1997 and 1995-1998 are reported in the Summary
    Compensation Table on page 25 under the years 1996, 1997, and 1998
    respectively, although paid in the following year. For the four-year
    period beginning in 1998, the target ROE goal is 12% per year, and, if
    ROE is 8% or greater per year, an additional incentive may be paid if
    direct written premium growth is at least 7% in that year. The size of
    the award opportunity is determined for the Chief Executive Officer
    specifically and executive officers generally based on the same factors
    referenced under Annual Incentive Compensation above. The actual payout
    under the Plan for the four-year period ending in 1998 is 99.0% of
    target for Mr. Bateman and the other Named Executive Officers who
    participate. This payout level was based on the ROE being higher than
    the target return for three of the four years, i.e. 1995, 1997 and 1998.
    See the chart on page 29 for further information on payouts under this
    Plan.
 
                                       19
<PAGE>
 
 .     Stock Options
 
          Pursuant to the terms of the Equity Incentive Plan, each year the
    Compensation Committee grants stock options to officers and key
    employees of Harleysville Group. Because stock option grants are a
    component of a compensation target, these awards do not take into
    account options already held by the officer. Awards are based on an
    objective formula that seeks to achieve, in combination with the other
    components of compensation, the total compensation target established by
    the Compensation Committee for the paygrade level of the executive
    position. The Compensation Committee generally uses the Black-Scholes
    option value method to determine the value of the stock option grant
    component of compensation and awards the number of stock options whose
    total value equals the target amount. Additionally, in 1998, because of
    the volatility of the stock market, grants were kept at the same level
    as in 1997 to maintain a competitive compensation target. Based upon the
    recommendation of the CEO, an officer may not receive a grant award in
    any one year if that officer's performance for the prior year does not
    meet expectations. However, in order to receive stock options at a level
    necessary to keep total compensation at the target level, executive
    officers above a certain level, including Mr. Bateman and all Named
    Executive Officers, must own an annually increasing number of shares of
    Harleysville Group stock, which for Mr. Bateman and the Named Executive
    Officers annually is the number of shares equal in value to 10% of a
    figure equal to 90% of the salary grade midpoint. In 1998, all such
    officers owned at least the required minimum number of shares. The stock
    option grants to the Named Executive Officers in 1998 are set out on the
    Summary Compensation Table on page 25 and the Option Grant Table on page
    27. All stock options granted under the Equity Incentive Plan in 1998,
    as well as in 1997 and 1996, have been non-qualified options receiving
    no special tax benefit, have an exercise price equal to the fair market
    value of a share of common stock on the date of grant, have a term of 10
    years, and vest at the rate of 50% each on the first and second
    anniversary dates of award, except that options become immediately
    exercisable upon an optionee's retirement, death or disability. Retired
    optionees, age 61 and younger, may exercise the options within one year
    of retirement, and retired optionees, age 62 and older, may exercise the
    options granted prior to May 1997 within 2 years after retirement and
    the options granted May 1997 and after within 5 years after retirement
    if the options do not otherwise expire. The exercise price may be paid
    by delivery of already owned shares. The Compensation Committee may, in
    its discretion, accelerate the exercisability of options in the event of
    a merger, consolidation or other change in control of Harleysville
    Group. The Company has never repriced stock options and has no current
    intention to do so.
 
Chief Executive Officer Compensation
 
      Mr. Bateman's compensation for 1998 as set forth in the Summary
Compensation Table on page 25 was based on the factors set forth above. His
total compensation, composed of base salary, annual incentive compensation,
long-term compensation and stock option grants, reflects both a target
compensation package
 
                                      20
<PAGE>
 
commensurate with similar officers within the insurance industry peer group as
well as an evaluation of his personal and company performance on both a
qualitative and quantitative basis.
 
      Mr. Bateman's base salary paid in 1998 was determined in November 1997
based upon a review of Mr. Bateman's and the Company's results in 1997.
Although earned premiums increased only slightly in 1997, the other key
financial indicators were quite positive: ROE increased, combined ratio
decreased and net income after taxes increased. The low premium growth was
attributable both to competitive factors beyond the control of Harleysville
Group and to voluntary actions of Harleysville Group. In particular, as a
result of rate reductions in the workers' compensation line caused by state
rating boards taking actions that resulted in rate decreases, efforts to
maintain pricing discipline in the face of competitive pressures, and efforts
to reduce coastal weather catastrophe exposures while improving profitability
overall, earned premiums increased only 2% over 1996. However, ROE increased
from 8.5% in 1996 to 14.4% in 1997 and the combined ratio in 1997 was 103.5%
compared to the combined ratio of 107.3% in 1996. Basic operating earnings were
$1.74 per share in 1997, a substantial gain over 1996's $.96 per share. Basic
net income was $1.89 per share compared to $1.03 in 1996. Stockholders' equity
increased from $370.2 million to $446.5 million, with book value per share
increasing from $13.09 to $15.49 as of December 31, 1997. In addition, the
total return on Company stock was 61% in 1997. On the qualitative side, the
Compensation Committee recognized Mr. Bateman's continued efforts in reducing
exposure to weather catastrophes and efforts in the market development area
including, most significantly, the acquisition of Minnesota Fire and Casualty
Company which further helped to spread risk geographically to the midwestern
area of the United States.
 
      Mr. Bateman's annual incentive compensation plan payout of $123,748 for
1998 was based on a formula that reflected attainment of 194.0% of the ROE
award goal, 118.5% of the premium growth award goal and 89.8% of the service
award goals; the minimum combined ratio award goal was not achieved. Likewise,
the payout for the long-term incentive plan for the period 1995 to 1998 was
based on the attainment of higher than goal ROE targets in 1995, 1997 and 1998.
Finally, the award of stock options in May 1998 was based on the appropriate
formula applied to Mr. Bateman's salary paygrade.
 
      In November 1998, the Committee determined Mr. Bateman's base
compensation, and 1999 annual and 1999-2002 long-term incentive plan target
awards. The incentive plan target maximum award levels were continued at the
same levels as prior years while base compensation was determined taking into
account: Mr. Bateman's additional responsibilities as Chairman of the Board;
premium growth (in excess of that resulting from the Minnesota Fire and
Casualty Company acquisition); the success of the Company's coastal windstorm
strategy; excellence of fundamental underwriting despite weather catastrophes;
ROE of 14.8%; and increased operating earnings, book value and stockholder
equity.
 
                                       21
<PAGE>
 
Internal Revenue Code Impact
 
      Internal Revenue Code Section 162(m) imposes conditions on the full
deductibility of compensation in excess of $1 million. The Compensation
Committee has reviewed, and continues to review, the potential consequences to
the Company of this section. This section had no impact on the Company in 1998
and it is not expected to have any impact on the Company in 1999 inasmuch as
the compensation levels other than from stock option exercises are below the $1
million figure, and any income from stock option exercises is fully deductible
under the current requirements of Section 162(m).
 
Submitted by the Compensation & Personnel Development Committee of the Board of
Directors:
 
      William E. Strasburg, Chairperson
      Michael L. Browne
      Robert D. Buzzell
 
                                       22
<PAGE>
 
                            STOCK PERFORMANCE CHARTS
 
      The following graphs show changes over the past 10-year period and 5-year
period (all full calendar-year periods) in the value of $100 invested in (1)
Harleysville Group Common Stock; (2) the NASDAQ Stock Market index; and (3) the
Peer Group index. All values are as of the last trading day of each year.
 
10-Year Graph
 
<TABLE>
<CAPTION>
       Comparison of 10-Year Cumulative Total Stockholder Return
- -
                       1988    1989    1990    1991    1992    1993
<S>                   <C>     <C>     <C>     <C>     <C>     <C>
Harleysville Group     100     156.41  140.52  200.60  273.15  298.86
NASDAQ                 100     121.20  102.92  165.10  192.07  220.46
Peer Group             100     140.90  134.62  191.06  256.97  265.64
<CAPTION>
                       1994    1995    1996    1997    1998
<S>                   <C>     <C>     <C>     <C>     <C>
Harleysville Group     246.67  338.16  328.10  528.26  580.41
NASDAQ                 215.51  304.81  374.82  459.84  646.42
Peer Group             256.00  358.51  392.85  594.22  506.65
</TABLE>
 
 
                                       23
<PAGE>
 
5-Year Graph
 
<TABLE>
<CAPTION>
       Comparison of 5-Year Cumultive Total Stockholder Return
                       1993   1994   1995    1996    1997    1998
<S>                   <C>    <C>    <C>     <C>     <C>     <C>
Harleysville Group     100    82.54  113.15  109.78  176.76  194.20
NASDAQ                 100    97.75  138.26  170.02  208.58  293.21
Peer Group             100    96.37  134.96  147.89  223.70  190.73
</TABLE>
 
      The year-end values of each investment shown in the preceding graphs are
based on share price appreciation plus dividends, with the dividends reinvested
as of the day such dividends were ex-dividend. The calculations exclude trading
commissions and taxes. Total stockholder returns from each investment, whether
measured in dollars or percentages, can be calculated from the year-end
investment values shown beneath each graph.
 
      Both graphs were prepared by the Center for Research in Security Prices
("CRSP"). The NASDAQ Stock Market index includes all U.S. Companies in NASDAQ
and the Peer Group index includes, for the 10 year chart, 82 NASDAQ Company
stocks and includes, for the 5 year chart, 62 NASDAQ Company stocks in SIC
Major Group 633 (SIC 6330-6339: U.S. and foreign, fire, marine and casualty
insurance). A complete list of these companies may be obtained from CRSP, at
the University of Chicago Graduate School of Business, 1101 East 58th Street,
Chicago, Illinois, 60637; (773) 702-7467. CRSP reweights the indices daily,
using the market capitalization on the previous trading day.
 
                                       24
<PAGE>
 
                           SUMMARY COMPENSATION TABLE
 
          This table indicates, for the last three fiscal years, cash
     and other compensation paid to the Named Executive Officers.
 
 
<TABLE>
<CAPTION>
    Name and Principal     Year      Annual              Long-Term         All Other
      Position as of              Compensation         Compensation       Compensation
     December 31, 1998
                                                     Awards      Payouts
                               -------------------------------------------------------
                                                   Securities   Long-Term
                                 Salary   Bonus    Underlying   Incentive
                                                  Stock Options  Payouts
                                                  (# of shares)
- --------------------------------------------------------------------------------------
  <S>                      <C>  <C>      <C>      <C>           <C>       <C>
     Walter R. Bateman     1998 $414,600 $123,748    32,736     $227,159    $24,876
   Chairman, President &   1997 $389,300 $ 96,728    32,736     $160,059    $22,858
  Chief Executive Officer  1996 $363,800 $ 16,614    32,674     $ 87,676    $16,371
- --------------------------------------------------------------------------------------
 
      Mark R. Cummins      1998 $239,338 $ 51,306    14,038     $ 71,897    $14,360
      Executive Vice       1997 $221,900 $ 36,872    14,038     $ 48,433    $13,314
        President,         1996 $207,300 $  6,332    14,010     $ 48,808    $ 9,329
     Chief Investment
    Officer & Treasurer
- --------------------------------------------------------------------------------------
 
      Thomas E. Roden      1998 $227,500 $ 58,409    16,148     $102,110    $13,650
  Senior Vice President,   1997 $217,700 $ 53,008    16,148     $ 48,433    $13,062
  Governmental Affairs &   1996 $208,300 $  9,105    16,116     $ 45,514    $ 9,374
     Special Projects
- --------------------------------------------------------------------------------------
 
     Spencer M. Roman
      Executive Vice       1998 $188,962 $ 43,858    10,614     $ 51,705    $11,338
        President,         1997 $170,700 $ 27,885    10,614     $      0    $10,242
     Field Operations      1996 $161,800 $  4,789    10,596     $      0    $ 7,281
- --------------------------------------------------------------------------------------
 
      Bruce J. Magee       1998 $183,600 $ 35,678    10,614     $ 54,340    $11,016
  Senior Vice President &  1997 $172,400 $ 27,885    10,614     $ 36,665    $10,326
  Chief Financial Officer  1996 $161,600 $  4,789    10,596     $      0    $ 7,272
</TABLE>
 
          Cash bonuses under the Senior Management Incentive Bonus
     Plan for services rendered in fiscal years 1998, 1997, and 1996,
     have been listed in the year earned, but were actually paid in
     the following year. Cash bonuses under the Long-Term Incentive
     Plan for services rendered in fiscal years 1993-1996, 1994-1997
     and 1995-1998 have been listed in 1996, 1997 and 1998
     respectively, although paid in the subsequent year.
 
          The terms of stock options granted in fiscal years 1998,
     1997 and 1996 are described in the Report of the Compensation and
     Personnel Development Committee beginning on page 17.
 
                                       25
<PAGE>
 
      Executive officers are eligible to participate in a tax-qualified Extra
Compensation Plan (a 401(k) plan) and an Unqualified Match Program ("Excess
Match") for executives whose benefits under the Extra Compensation Plan are
affected by participation limits imposed on higher-paid individuals by federal
tax law. Provided net income as a percentage of premium earned meets or exceeds
prescribed limits set by the Board of Directors each year, there is a 25%, 50%,
75% or 100% match to the Extra Compensation Plan for all employee participants
and an allocation under the Excess Match for a percentage of each higher-paid
participant's salary up to 6%. The amounts shown under "All Other Compensation"
reflect contributions to the Extra Compensation Plan: (a) for 1998, of $9,600
on behalf of each of the Named Executive Officers to match 1998 pre-tax
elective deferral contributions made by each to the Extra Compensation Plan;
(b) for 1997, of $9,500 on behalf of each of the Named Executive Officers to
match 1997 pre-tax elective deferral contributions made by each to the Extra
Compensation Plan; and (c) for 1996, of $6,750 on behalf of each of the Named
Executive Officers to match 1996 pre-tax elective deferral contributions made
by each to such plan; the remainder of each amount is the allocation for each
Named Executive Officer under the Excess Match.
 
                                       26
<PAGE>
 
                             OPTION GRANTS IN 1998
 
        This table shows the number and value of stock options granted
   to the Named Executive Officers in 1998.
 
<TABLE>
<CAPTION>
        Name         Number of  % of Total Exercise Price Expiration   Grant Date
                     Securities  Options     Per Share       Date    Present Value
                     Underlying Granted to
                      Options   Employees
                     Granted(#) in Fiscal
                                   Year
- ----------------------------------------------------------------------------------
  <S>                <C>        <C>        <C>            <C>        <C>
  Walter R. Bateman    32,736       10%        $24.50      5/20/08       $236,681
- ----------------------------------------------------------------------------------
  Mark R. Cummins      14,038        4%        $24.50      5/20/08       $101,495
- ----------------------------------------------------------------------------------
  Thomas E. Roden      16,148        5%        $24.50      5/20/08       $116,750
- ----------------------------------------------------------------------------------
  Spencer M. Roman     10,614        3%        $24.50      5/20/08       $ 76,739
- ----------------------------------------------------------------------------------
  Bruce J. Magee       10,614        3%        $24.50      5/20/08       $ 76,739
</TABLE>
 
        In calendar year 1998, Harleysville Group granted a total of
   334,870 options representing the right to purchase 334,870 shares of
   common stock to 148 officers and key employees under the Equity
   Incentive Plan.
 
        The Grant Date Present Value was determined using the Black-
   Scholes option pricing model. These numbers are calculated based on
   the requirements promulgated by the SEC and do not reflect
   Harleysville Group's estimate of future stock price growth. Use of
   this model should not be viewed in any way as a forecast of the
   future performance of Harleysville Group's common stock, which will
   be determined by future events and unknown factors.
 
        For a description of the option plan, please see page 20.
 
                                       27
<PAGE>
 
                       OPTION EXERCISES & YEAR-END VALUES
 
          This table shows the number and value of stock options
     (exercised in 1998 and the value of unexercised options as of
     the end of 1998) for the Named Executive Officers during 1998.
     Year-end value is calculated using the difference between the
     option exercise price and $25.8125 (year-end stock price)
     multiplied by the number of shares underlying the option.
 
<TABLE>
<CAPTION>
      Name             No. of     Value       No. of Securities       Value of Unexercised
                       Shares    Realized  Underlying Unexercised         In-the-Money
                     Acquired on              Options at Fiscal        Options at Year-End
                      Exercise                    Year-End
                                     --------------------------------------------------------
                                          Exercisable Unexercisable Exercisable Unexercisable
- ---------------------------------------------------------------------------------------------
  <S>                <C>         <C>      <C>         <C>           <C>         <C>
  Walter R. Bateman       0      $     0    125,600      49,104     $1,612,170    $171,864
- ---------------------------------------------------------------------------------------------
  Mark R. Cummins         0      $     0    52,679       21,057     $  651,480    $ 73,700
- ---------------------------------------------------------------------------------------------
  Thomas E. Roden       5,040    $90,720    61,238       24,222     $  790,902    $ 84,777
- ---------------------------------------------------------------------------------------------
  Spencer M. Roman        0      $     0    40,647       15,921     $  498,763    $ 55,724
- ---------------------------------------------------------------------------------------------
  Bruce J. Magee        2,554    $49,964    41,891       15,921     $  547,472    $ 55,724
- ---------------------------------------------------------------------------------------------
</TABLE>
 
                                       28
<PAGE>
 
                            LONG-TERM INCENTIVE PLAN
               PERFORMANCE OPPORTUNITY AWARDS IN LAST FISCAL YEAR
 
      The table shows the range of potential payouts under the Plan for a four-
year performance period commencing in 1998. Four-year performance periods under
the Plan were completed in 1996, 1997 and 1998 and actual payments thereunder
are shown in the Summary Compensation Table for those years.
 
<TABLE>
<CAPTION>
        Name         Performance     Target      Estimated Future Payments Under
                       or Other       Award        Non-Stock Price Based Plans
                     Period Until  Percent of
                      Maturation  1/1/98 Salary
                      or Payout
                                               ------------------------------------
                                                 Threshold    Target    Maximum
 
 
 ----------------------------------------------------------------------------------
  <S>                <C>          <C>           <C>         <C>        <C>
  Walter R. Bateman    4 years          45%              0  $ 186,600  $    279,900
 ----------------------------------------------------------------------------------
  Mark R. Cummins      4 years          25%              0  $  58,800  $     88,200
 ----------------------------------------------------------------------------------
  Thomas E. Roden      4 years          35%              0  $  79,600  $    119,400
 ----------------------------------------------------------------------------------
  Spencer M. Roman     4 years          25%              0  $  44,400  $     66,600
 ----------------------------------------------------------------------------------
  Bruce J. Magee       4 years          25%              0  $  45,900  $     68,800
</TABLE>
      For a description of the long-term incentive compensation plan, please
see page 19.
 
                                       29
<PAGE>
 
                               PENSION PLANS
 
         These tables show estimated annual benefits payable upon
    retirement to the Named Executive Officers under the qualified
    Pension Plan in conjunction with a non-qualified Supplemental
    Pension Plan.
 
         Pension Plan Table I shows the estimated annual benefits
    payable upon retirement under the Pension Plans to Mr. Bateman,
    Mr. Roden and Mr. Magee, who were first employed prior to January
    1, 1989.
 
                                  TABLE I
 
 
<TABLE>
<CAPTION>
     Average 5     10 Years 15 Years 20 Years 25 Years 30 Years 35 Years
   Year Credited
     Salary @
     12/31/98
- ------------------------------------------------------------------------
   <S>             <C>      <C>      <C>      <C>      <C>      <C>
     $600,000      $131,779 $197,669 $263,558 $329,448 $329,448 $329,448
- ------------------------------------------------------------------------
     $550,000      $120,529 $180,794 $241,058 $301,323 $301,323 $301,323
- ------------------------------------------------------------------------
     $500,000      $109,279 $163,919 $218,558 $273,198 $273,198 $273,198
- ------------------------------------------------------------------------
     $450,000      $ 98,029 $147,044 $196,058 $245,073 $245,073 $245,073
- ------------------------------------------------------------------------
     $400,000      $ 86,779 $130,169 $173,558 $216,948 $216,948 $216,948
- ------------------------------------------------------------------------
     $350,000      $ 75,529 $113,294 $151,058 $188,823 $188,823 $188,823
- ------------------------------------------------------------------------
     $300,000      $ 64,279 $ 96,419 $128,558 $160,698 $160,698 $160,698
- ------------------------------------------------------------------------
     $250,000      $ 53,029 $ 79,544 $106,058 $132,573 $132,573 $132,573
- ------------------------------------------------------------------------
     $200,000      $ 41,779 $ 62,669 $ 83,558 $104,448 $104,448 $104,448
- ------------------------------------------------------------------------
     $150,000      $ 30,529 $ 45,794 $ 61,058 $ 76,323 $ 76,323 $ 76,323
- ------------------------------------------------------------------------
     $125,000      $ 24,904 $ 37,356 $ 49,808 $ 62,261 $ 62,261 $ 62,261
</TABLE>
 
                                       30
<PAGE>
 
         Pension Plan Table II shows the estimated annual benefits
    payable upon retirement under the Pension Plans to Mr. Cummins and
    Mr. Roman, who were first employed after January 1, 1989.
 
                                 TABLE II
 
<TABLE>
<CAPTION>
     Average 5     10 Years 15 Years 20 Years 25 Years 30 Years 35 Years
   Year Credited
     Salary @
     12/31/98
- ------------------------------------------------------------------------
   <S>             <C>      <C>      <C>      <C>      <C>      <C>
     $600,000      $115,444 $173,165 $230,887 $288,609 $288,609 $288,609
- ------------------------------------------------------------------------
     $550,000      $105,694 $158,540 $211,387 $264,234 $264,234 $264,234
- ------------------------------------------------------------------------
     $500,000      $ 95,944 $143,915 $191,887 $239,859 $239,859 $239,859
- ------------------------------------------------------------------------
     $450,000      $ 86,194 $129,290 $172,387 $215,484 $215,484 $215,484
- ------------------------------------------------------------------------
     $400,000      $ 76,444 $114,665 $152,887 $191,109 $191,109 $191,109
- ------------------------------------------------------------------------
     $350,000      $ 66,694 $100,040 $133,387 $166,734 $166,734 $166,734
- ------------------------------------------------------------------------
     $300,000      $ 56,944 $ 85,415 $113,887 $142,359 $142,359 $142,359
- ------------------------------------------------------------------------
     $250,000      $ 47,194 $ 70,790 $ 94,387 $117,984 $117,984 $117,984
- ------------------------------------------------------------------------
     $200,000      $ 37,444 $ 56,165 $ 74,887 $ 93,609 $ 93,609 $ 93,609
- ------------------------------------------------------------------------
     $150,000      $ 27,694 $ 41,540 $ 55,387 $ 69,234 $ 69,234 $ 69,234
- ------------------------------------------------------------------------
     $125,000      $ 22,819 $ 34,228 $ 45,637 $ 57,047 $ 57,047 $ 57,047
</TABLE>
 
         A pension is based on the highest five-year average of
    credited salary which is reflected in the "Salary" column of the
    Summary Compensation Table.
 
         For the purposes of the Pension Plans, executive officers
    named in the Summary Compensation Table have been credited with
    the following years of service: Mr. Bateman, 11 years; Mr. Roden,
    15 years; Mr. Cummins, 7 years; Mr. Magee, 13 years; and Mr.
    Roman, 5 years.
 
         The retirement benefits shown in the Pension Plan Tables
    assume that benefits will be payable at age 65 in the form of a
    single life annuity, and are not subject to any deduction for
    Social Security or other offset amounts. For the purposes of
    calculating benefits under the Pension Plans, no Named Executive
    Officer may be credited with more than 25 years of service.
 
                                       31
<PAGE>
 
                     TRANSACTIONS WITH HARLEYSVILLE MUTUAL
 
      Harleysville Group was formed by Harleysville Mutual in 1979. It was a
wholly-owned subsidiary of Harleysville Mutual until June 1986, when
Harleysville Mutual sold shares of Harleysville Group's common stock in a
public offering. Harleysville Mutual's ownership of Harleysville Group's
outstanding common stock was reduced from 100% to approximately 70% at that
time. In April 1992, Harleysville Mutual sold additional shares of its
Harleysville Group common stock holdings, further reducing Harleysville
Mutual's ownership to approximately 55%. Harleysville Group's operations are
interrelated with the operations of Harleysville Mutual. Harleysville Group
believes that its various transactions with Harleysville Mutual, of which the
material ones are summarized herein, have been fair to Harleysville Group and
equal to those terms that could have been negotiated with an independent third
party.
 
      Under a lease effective January 1, 1995, Harleysville Mutual rents the
home office property from a partnership owned by Harleysville Group for a five-
year term at a base rent of $2.75 million. Harleysville Mutual may also pay
additional rent, based on a formula, for any additions, improvements or
renovations. There was no additional rental payment for 1998. Harleysville
Mutual is also responsible for all operating expenses including maintenance and
repairs. The base rent and formula for additional charges are based upon an
appraisal obtained from an independent real estate appraiser. Harleysville
Mutual and Harleysville Group and their respective affiliates share these
facilities, and the expenses thereof are allocated according to an intercompany
allocation agreement.
 
      Harleysville Group provides certain management services to Harleysville
Mutual and its property/casualty affiliates. Under related agreements,
Harleysville Group serves as the paymaster for the Harleysville companies, with
each company being charged for its proportionate share of salary and employee
benefits expense based upon time allocation. Harleysville Group received a fee
of $5.7 million in 1998 for its services under these management agreements.
 
      Harleysville Group borrowed approximately $18.5 million from Harleysville
Mutual in connection with the acquisition of Mid-America Insurance Company and
New York Casualty Insurance Company in 1991. It was a demand loan with a stated
maturity in March 1998. In February 1998 the maturity was extended to March
2005 and the interest rate became LIBOR plus .65%, which was a commercially
reasonable market rate in 1998.
 
      Harleysville Group's property/casualty insurance subsidiaries participate
in an underwriting pool with Harleysville Mutual whereby such subsidiaries cede
to Harleysville Mutual all of their insurance business and assume from
Harleysville Mutual an amount equal to their participation in the pooling
agreement. All losses and loss settlement and other underwriting expenses are
prorated among the parties on the basis of participation in the pooling
agreement. The agreement pertains to all insurance business written or earned
on or after January 1, 1986, and Harleysville Group's pool participants are not
liable for losses occurring prior to January 1, 1986. Harleysville Group's
participation in 1998 was 72%. The pooling agreement may be
 
                                       32
<PAGE>
 
amended or terminated by agreement of the parties. Information describing the
pool arrangement is contained in Harleysville Group's 1998 Annual Report to
Stockholders.
 
      The property/casualty insurance subsidiaries of Harleysville Group
entered into a reinsurance agreement with Harleysville Mutual, effective
January 1, 1997, whereby Harleysville Mutual reinsures the property/casualty
insurance company subsidiaries of Harleysville Group on a post-pooled basis for
property losses as a result of catastrophes, excluding earthquakes and
hurricanes, incurred in a quarter. Harleysville Mutual in turn pays to the
subsidiaries in the event of covered catastrophes 100% of the subsidiaries'
accumulated net loss in a quarter in excess of their retention (or deductible),
which for 1998 was their pooling percentage times $2.5 million, up to a maximum
net loss equaling $22.5 million times the subsidiaries' total pooling
percentages. In 1998, retention was $1.8 million and the maximum amount covered
was $16.2 million per quarter. Effective January 1, 1999, the retention became
the subsidiaries' pooling percentage times $5 million and the maximum net loss
equals $20 million times the subsidiaries' pooling percentage. The premium paid
by the subsidiaries of Harleysville Group to Harleysville Mutual is 3.7% of
property premium.
 
                        SECTION 16 REPORTING COMPLIANCE
 
      Harleysville Group believes that for 1998 its officers, directors and 10%
shareholders complied with the requirements of Section 16 of the Securities
Exchange Act of 1934 based on a review of forms filed, or written notice that
no annual forms were required.
 
                                       33
<PAGE>
 
 
 
 
 
      XPU-056 (ED: 3-99)
<PAGE>
 
                               [HARLEYSVILLE LOGO]




                                      PROXY
                             HARLEYSVILLE GROUP INC.

            ANNUAL MEETING OF STOCKHOLDERS TO BE HELD APRIL 28, 1999
           THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS


         The undersigned hereby constitutes and appoints Roger A. Brown, Bruce
J. Magee, and Dennis M. Hyland, and each or any of them, proxies of the
undersigned, with full power of substitution, to vote all the shares of
Harleysville Group Inc. (the "Company") which the undersigned may be entitled to
vote at the Annual Meeting of Stockholders of the Company, to be held at 355
Maple Avenue, Harleysville, Pennsylvania, on April 28, 1999, at 10:00 A.M.,
local time, and at any adjournment thereof, as follows:


                (Continued, and to be marked, dated and signed on reverse side)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                              FOLD AND DETACH HERE.








                                    MAP HERE
<PAGE>
 
1.       ELECTION OF CLASS C DIRECTORS
<TABLE> 
<S>      <C>      <C>               <C> 
           FOR      WITHHOLD        (INSTRUCTION:  TO WITHHOLD AUTHORITY TO VOTE 
         all the   AUTHORITY        FOR ANY INDIVIDUAL NOMINEE, STRIKE A LINE 
         nominees to vote for       THROUGH THE NOMINEE'S NAME BELOW.)
          listed. the nominees
                     listed.        Walter R. Bateman     William E. Strasburg

         [   ]        [   ]

         A VOTE FOR IS RECOMMENDED BY THE BOARD OF DIRECTORS.

2.       APPROVAL OF THE YEAR 2000 DIRECTORS' STOCK OPTION PROGRAM

           FOR             AGAINST           ABSTAIN
         [     ]           [     ]           [     ]

         A VOTE FOR IS RECOMMENDED BY THE BOARD OF DIRECTORS.

3.       In their discretion, the proxies are authorized to vote upon such other
         business as may properly come before the meeting and any adjournment
         thereof.



         THIS PROXY WHEN PROPERLY SIGNED WILL BE VOTED AS SPECIFIED. IF A CHOICE
    IS NOT SPECIFIED, THE PROXY WILL BE VOTED FOR THE ELECTION OF DIRECTORS
    STATED ABOVE.

         [     [Name & Address]    ]              
                                                       
                                                       
                                                       
         [                         ]               


Signature                       Signature                        Date
         -----------------------          -----------------------      ---------
This proxy should be dated, signed by the stockholder exactly as his or her name
appears herein and returned promptly in the enclosed envelope. Persons signing
in a fiduciary capacity should so indicate.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
                              FOLD AND DETACH HERE
</TABLE> 


                               [HARLEYSVILLE LOGO]


                                 ANNUAL MEETING
                                       OF
                      HARLEYSVILLE GROUP INC. STOCKHOLDERS
                            Wednesday, April 28, 1999
                                   10:00 A.M.
                                 355 Maple Ave.
                             Harleysville, PA 19438




                             YOUR VOTE IS IMPORTANT!

Mark, sign and date your proxy card and return it promptly in the enclosed
envelope.

                                   PLEASE VOTE

<PAGE>
 
                             HARLEYSVILLE GROUP INC.


                    YEAR 2000 DIRECTORS' STOCK OPTION PROGRAM



                         APPROVED BY BOARD OF DIRECTORS

                                FEBRUARY 24, 1999
<PAGE>
 
                             HARLEYSVILLE GROUP INC.
                    YEAR 2000 DIRECTORS' STOCK OPTION PROGRAM

                         APPROVED BY BOARD OF DIRECTORS
                                FEBRUARY 24, 1999

                       T A B L E   O F   C O N T E N T S



  I.        INTRODUCTION...................................................1

            A.      Purpose of the Program.................................1
            B.      Definitions............................................1

 II.        PROGRAM ADMINISTRATION.........................................2

            A.      Administration.........................................2
            B.      Participation..........................................3
            C.      Maximum Number of Shares Available.....................3
            D.      Adjustments............................................3
            E.      Registration Conditions................................3
            F.      General Provisions.....................................4

III.        STOCK OPTIONS..................................................4

            A.      Price..................................................4
            B.      Amount and Timing of Grants............................4
            C.      Exercisability of Options..............................5
            D.      Period.................................................5
            E.      Exercise Procedures....................................5
            F.      Payment................................................5
            G.      Termination of Service.................................5
            H.      Retirement, Disability or Death........................5

IV.         MISCELLANEOUS PROVISIONS.......................................6

            A.      Amendment, Suspension and Termination of Program.......6
            B.      Government and Other Regulations.......................6
            C.      Other Compensation Plans and Programs..................6
            D.      Transferability........................................6
            E.      Withholding Taxes......................................6
            F.      Construction of Program................................6
            G.      Unfunded Program.......................................6
            H.      Pronouns, Singular and Plural..........................6
            I.      Effective Dates........................................7
            J.      Limitation of Rights...................................7
<PAGE>
 
                             HARLEYSVILLE GROUP INC.

                    YEAR 2000 DIRECTORS' STOCK OPTION PROGRAM



I.       INTRODUCTION
         ------------

         A.   PURPOSE OF THE PROGRAM: Harleysville Group Inc. (the "Company) has
              ----------------------
              established the Program to further its long-term financial success
              by offering stock options to non-employee Directors of the Company
              and of its parent, Harleysville Mutual Insurance Company, whereby
              such Directors can share in achieving and sustaining such success.
              The Program also provides a means to attract and retain the
              Directors needed to achieve the Company's and the Parent's long-
              term growth and profitability objectives. No more option grants
              shall be made after May 1999 under the 1995 Directors' Stock
              Option Program.

         B.   DEFINITIONS: When used in the Program, the following terms shall 
              -----------
              have the meanings set forth below:

              "Award(s)" shall mean Non-Qualified Stock Options made under the 
              Program.

              "Board" shall mean the Board of Directors of the Company and the 
              Board of Directors of the Parent.

              "Code" shall mean the Internal Revenue Code of 1986, as amended.

              "Company" shall mean Harleysville Group Inc., a Delaware
              corporation, and any successor in a reorganization or similar
              transaction.

              "Committee" shall mean the Compensation & Personnel Development
              Committee of the Board of Directors, which shall administer the
              Program. The Committee shall be composed of at least two persons
              who are from time to time appointed to serve by the Board of the
              Company.

              "Common Stock" shall mean the common stock of the Company, par
              value of $1.00 per share, and may be either stock previously
              authorized but unissued, or stock reacquired by the Company.

              "Director" shall mean a member of the Board of Directors of the
              Company or a member of the Board of Directors of the Parent.
<PAGE>
 
Harleysville Group Inc.
Year 2000 Directors' Stock Option Program
Page No. 2


              "Disability" shall mean the inability of a Participant to perform
              the services normally rendered due to any physical or mental
              impairment that can be expected to be of either permanent or
              indefinite duration, as determined by the Committee on the basis
              of appropriate medical evidence, and that results in the
              Participant's Termination of Service.
              
              "Fair Market Value" shall mean with respect to a given day, the
              closing price of Common Stock, as reported by such responsible
              reporting service as the Committee may select, or if there were no
              transactions in the Common Stock on such day, then the last
              preceding day on which transactions took place. The foregoing
              notwithstanding, the Committee may determine the Fair Market Value
              in such other manner as it may deem more appropriate for Program
              purposes or as is required by applicable laws or regulations.
                                                                               
              "1995 Program" shall mean the 1995 Directors' Stock Option       
              Program.                                                         
                                                                               
              "Non-Qualified Stock Option" or "NQSO" shall mean a right to
              purchase the Company's Common Stock which is not intended to
              comply with the terms and conditions for an incentive stock
              option, as set forth in Section 422A of the Code, or such other
              sections of the Code as may be in effect from time to time.
              
              "Parent" shall mean Harleysville Mutual Insurance Company.       
                                                                               
              "Participant" shall mean an active member of the Board who is not
              an officer or full-time salaried employee of the Company or of the
              Parent.
              
              "Program" shall mean the Company's Year 2000 Directors' Stock
              Option Program.
              
              "Termination of Service" shall mean a cessation of the
              Participant's Board service for any reason.


II.      PROGRAM ADMINISTRATION
         ----------------------

         A.   ADMINISTRATION: The Program shall be administered by the
              --------------
              Committee. Subject to the express provisions of the Program, the
              Committee shall have authority to interpret the Program, to
              prescribe, amend and rescind rules and regulations relating to the
              Program and to make all other determinations deemed necessary or
              advisable in the implementation and administration of the Program;
              provided, however, that the Committee shall have no discretion
              with respect to the eligibility or selection of Directors to
              receive options under the Program, the number of shares of stock
              subject to any such options under the Program, or the purchase
              price thereunder, and provided further that the Committee shall
              not have the authority to take any action or make any
              determination that would materially increase the benefits accruing
              to Participants under the Program. The determination of the
              Committee in the administration of the Program, as described
              herein, shall be final, conclusive and binding upon all persons
              including, without limitation,
<PAGE>
 
Harleysville Group Inc.
Year 2000 Directors' Stock Option Program
Page No. 3


              the Company, its stockholders and the persons granted options
              under the Program. The Secretary of the Company shall be
              authorized to implement the Program in accordance with its terms
              and to take such action of a ministerial nature as shall be
              necessary to effectuate the intent and purposes thereof.

         B.   PARTICIPATION: All current and future non-employee active
              -------------
              Directors of the Company and the Parent who hold office at any
              time between the May 2000 Board Meeting and the May Board Meeting
              in 2004 shall be eligible to participate in the Program. Non-
              employee Directors as of the May 2000 Board of Directors Meeting
              shall automatically participate in the Program. Future non-
              employee Directors, including an employee Director who becomes a
              non-employee Director, will automatically participate in the
              Program as of the date of the first May meeting of the Board of
              Directors following election to the Board of Directors, or at the
              first May Board of Directors meeting after becoming a non-employee
              Director (whether or not newly elected to the Board) at or prior
              to the May 2004 Board of Directors meeting.

         C.   MAXIMUM NUMBER OF SHARES AVAILABLE: The maximum number of shares 
              ----------------------------------
              for which options may be granted under the Program is 123,500,
              subject to adjustment as provided under Article II, Paragraph D,
              of the Program. The shares made available are comprised of all
              shares not issued under the 1990 Directors' Stock Option Program
              and 1995 Directors' Stock Option Program, with any additional
              amount of shares concurrently necessary, up to a maximum of
              123,500, to be made available through a reduction in the amount of
              total shares reserved for the Company' s Equity Incentive Plan
              approved in 1997.

              Stock options which expire or are terminated, cancelled or
              forfeited in accordance with the Program shall again be available
              for Award under the Program.

         D.   ADJUSTMENTS: In the event of stock dividends, stock splits,
              -----------
              re-capitalizations, mergers, consolidations, combinations,
              exchanges of shares, spin-offs, liquidations, reclassifications or
              other similar changes in the capitalization of the Company, the
              number of shares of Common Stock available for grant under this
              Program shall be adjusted proportionately, and the number of
              shares, and the option price of outstanding stock options shall be
              similarly adjusted. Also, in instances where another business
              entity is acquired by the Company or its Parent, and the Company
              or its Parent has assumed outstanding option grants under a prior
              existing plan of the acquired entity, similar adjustments are
              permitted at the discretion of the Board of the Company. In the
              event of any other change affecting the Common Stock reserved
              under the Program, such adjustment, if any, as may be deemed
              equitable by the Committee, shall be made to give proper effect to
              such event.

         E.   REGISTRATION CONDITIONS:
              -----------------------

              1.   Unless issued pursuant to a registration statement under the 
                   Securities Act of 1933, as amended, no shares shall be      
                   issued to a Participant under the Program unless the        
                   Participant represents and agrees with the Company that such 
                   shares are being acquired for investment and not with a view 
                   to the resale or distribution thereof, or such other        
                   documentation as may be                                      
<PAGE>
 
Harleysville Group Inc.
Year 2000 Directors' Stock Option Program
Page No. 4


                   required by the Company, unless in the opinion of counsel to 
                   the Company such representation, agreement or documentation 
                   is not necessary to comply with such Act.                   
                                                                               
              2.   Any restriction on the resale of shares shall be evidenced  
                   by an appropriate legend on the stock certificate.          
                                                                               
              3.   The Company shall not be obligated to deliver any Common    
                   Stock until it has been listed on each securities exchange  
                   on which the Common Stock may then be listed or until there 
                   has been qualification under or compliance with such federal 
                   or state laws, rules or regulations as the Company may deem 
                   applicable. The Company shall use reasonable efforts to     
                   obtain such listing, qualification and compliance.           

         F.   GENERAL PROVISIONS: Each Award under the Program shall be        
              ------------------                                               
              subject to the requirement that if at any time the Committee     
              shall determine that (i) the listings, registrations or          
              qualifications of the shares of Common Stock subject or related  
              thereto upon any securities exchange or under any state or       
              federal law, or (ii) the consent or approval of any government   
              regulatory body, or (iii) an agreement by the recipient of an    
              Award with respect to the disposition of shares of Common Stock  
              is necessary or desirable as a condition of or in connection with 
              the granting of such Award or the issuance or purchase of shares 
              of Common Stock thereunder, such Award shall not be consummated  
              in whole or in part unless such listing, registration,           
              qualification, consent, approval, or agreement shall have been   
              effected or obtained free of any conditions not acceptable to the 
              Committee.                                                        


III.     STOCK OPTIONS
         -------------
         All stock options granted to Participants under the Program shall be
         Non-Qualified Stock Options and evidenced by a Notice of Award which
         shall be subject to applicable provisions of the Program, and such
         other provisions as the Committee may adopt, including the following
         provisions:

         A.   PRICE: The option price per share shall be one hundred percent 
              -----
              (100%) of the Fair Market Value of a share of Common Stock at the
              close of business on the date of grant.

         B.   AMOUNT AND TIMING OF GRANTS: An incumbent Director shall receive 
              ---------------------------
              a grant of 2,500 Non-Qualified Stock Options at the Year 2000 May
              Board Meeting and a grant of 2,500 options at each May Board
              Meeting thereafter for four successive years until and including
              the May 2004 Board Meeting, except that if an incumbent Director
              has options under the 1995 Program that vest in the same year as
              an award of options under this Program then the amount of shares
              awarded in that year shall be reduced by the number of shares that
              vest that year under the 1995 Program. For Directors first elected
              after May 2000, or for an employee Director becoming a non-
              employee Director after May 2000, he or she shall receive a grant
              of 2,500 options at the first May Board Meeting following election
              or an employee
<PAGE>
 
Harleysville Group Inc.
Year 2000 Directors' Stock Option Program
Page No. 5


              Director becoming a non-employee Director and a grant of 2,500
              options at each May Board Meeting thereafter occurring in or
              before May 2004. No options shall be granted under this Program
              after May 2004.

              In the event that at a May Board meeting there are insufficient
              shares remaining in the Program on which to grant 2,500 options to
              each Director otherwise entitled to receive options, then the
              remaining shares shall be divided by the number of Participants
              and options shall be granted to the Participants in an amount
              equal to the whole number so determined.

         C.   EXERCISABILITY OF OPTIONS: All options vest and are               
              -------------------------                                         
              exercisable as of the day of grant.                               
                                                                                
         D.   PERIOD: Stock options shall have a term of ten years from         
              ------                                                            
              the date of grant and shall expire at 5:00 p.m. on the tenth      
              anniversary of the grant, subject to earlier expiration or        
              termination as set forth herein.                                  
                                                                                
         E.   EXERCISE PROCEDURES: A stock option, or portion thereof,          
              -------------------                                               
              shall be exercised by delivery of a written notice of             
              exercise to the Secretary of the Company, and payment of the      
              full price of the shares being purchased.                         
                                                                                
                                                                                
         F.   PAYMENT: The price of an exercised stock option, or portion       
              -------                                                           
              thereof, may be paid:                                             
                                                                                
              1.   in cash or by check, bank draft or money order payable       
                   to the order of the Company, or                              
                                                                                
              2.   through the delivery of shares of the Company's Common       
                   Stock owned by the Participant, having an aggregate          
                   Fair Market Value as determined on the date of exercise      
                   equal to the option price, or                                
                                                                                
              3.   by a combination of both 1 and 2 above.                      
                                                                                
         G.   TERMINATION OF SERVICE: In the event of the Termination of        
              ----------------------                                            
              Service on the Board by a Director, other than by reason of       
              retirement, Disability or death as set forth in paragraph H       
              hereof, the then outstanding options of such Director may be      
              exercised within one hundred twenty days after such               
              termination, or on their stated expiration date, whichever        
              occurs first. For purposes of this Program, the term "by          
              reason of retirement" shall mean mandatory retirement at age      
              72 pursuant to Board policy.
<PAGE>
 
Harleysville Group Inc.
Year 2000 Directors' Stock Option Program
Page No. 6


         H.   RETIREMENT, DISABILITY OR DEATH: In the event of Termination of 
              -------------------------------                             
              Service by reason of retirement (as defined above) or death, or
              Disability of a Director, the Director or his/her guardian or
              legal representative may exercise all options within two years
              after such retirement, death or Disability, or on their stated
              expiration date, whichever occurs first.

IV.      MISCELLANEOUS PROVISIONS                                         
         ------------------------
                                                                               
         A.   AMENDMENT, SUSPENSION AND TERMINATION OF PROGRAM: The Board of  
              ------------------------------------------------            
              Directors may suspend or terminate the Program or revise or amend
              it in any respect whatsoever; provided, however, that without
              approval of the stockholders, no revision or amendment shall
              change the selection or eligibility of Directors to receive
              options under the Program, the number of shares of stock subject
              to any such options of the Program, the purchase price thereunder,
              or materially increase the benefits accruing to Participants under
              the Program.
              
         B.   GOVERNMENT AND OTHER REGULATIONS: The obligation of the Company to
              --------------------------------                            
              issue Awards under the Program shall be subject to all applicable
              laws, rules and regulations, and to such approvals by any
              government agencies as may be required.
                                                                               
         C.   OTHER COMPENSATION PLANS AND PROGRAMS: The Program shall not      
              -------------------------------------                             
              be deemed to preclude the implementation by the Company or        
              its Parent of other compensation plans or programs which may      
              be in effect from time to time.                                   
                                                                                
         D.   TRANSFERABILITY: No right or interest of any Participant in any 
              ---------------
              Award under the Program shall be (a) assignable or transferable,
              except by will or the laws of descent and distribution or a valid
              beneficiary designation made in accordance with procedures
              established by the Committee, and (b) liable for, or subject to,
              any lien, obligation or liability.
                                                                                
         E.   WITHHOLDING TAXES: The Company shall have the right to require a
              -----------------
              payment from a Participant to cover applicable withholding for any
              federal, state or local taxes, if any. The Company reserves the
              right to offset such tax payment from any other funds which may be
              due the Participant by the Company.
              
         F.   CONSTRUCTION OF PROGRAM: The interpretation of the Program and the
              -----------------------
              application of any rules implemented hereunder shall be determined
              in accordance with the laws of the Commonwealth of Pennsylvania.
              
         G.   UNFUNDED PROGRAM: The Program shall be unfunded, and the Company
              ----------------
              shall not be required to segregate any assets which may at any
              time be represented by Awards. Any liability of the Company to any
              person with respect to an Award under this Program shall be based
              solely upon any obligations which may be created by this Program;
              no such obligation of the Company shall be deemed to be secured by
              any pledge or other encumbrance on any property of the Company.
<PAGE>
 
Harleysville Group Inc.
Year 2000 Directors' Stock Option Program
Page No. 7



         H.   PRONOUNS, SINGULAR AND PLURAL: The masculine may be read as
              -----------------------------
              feminine, the singular as plural, and the plural as singular as
              necessary to give effect to the Program.

         I.   EFFECTIVE DATES: The Program will become effective on approval 
              ---------------
              by stockholders. The Program and all outstanding Awards shall
              remain in effect until all outstanding Awards have been exercised
              or repurchased, have expired or have been cancelled.

         J.   LIMITATION OF RIGHTS:
              -------------------- 

              1.   No Right to Continue as a Director: Neither the Program, nor
                   ----------------------------------
                   the granting of an option nor any other action taken pursuant
                   to the Program, shall constitute or be evidence of any
                   agreement or understanding, express or implied, that the
                   Director has a right to continue as a Director for any period
                   of time, or at any particular rate of compensation.

              2.   No Share Owners' Rights for Options: A Director who has been
                   -----------------------------------
                   granted options shall have no rights as a share owner with
                   respect to the shares covered by options granted hereunder
                   until the date of the issuance of a stock certificate
                   therefor, and no adjustment will be made for dividends or
                   other rights for which the record date is prior to the date
                   such certificate is issued.


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