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                                                                   EXHIBIT 10.18

                             EMPLOYMENT AGREEMENT

     THIS AGREEMENT is made as of the 1ST day of JANUARY, 2000 between GSI
LUMONICS INC. (the "company"), a corporation continued under the laws of New
Brunswick and CHARLES D. WINSTON (the "executive");

     WHEREAS the Company and the Executive have entered into an employment
relationship for their mutual benefit;

     NOW THEREFORE THIS AGREEMENT WITNESSES that the parties have agreed that
the terms and conditions of the relationship shall be as follows:

1.   DUTIES

1.1  The Company confirms the appointment of the Executive as Chief Executive
     Officer of the Company to undertake the duties requested of the Executive
     from time to time by the Board of Directors (the "Board") of the Company or
     such committee of the Board designated by the Board and the Executive
     accepts the office, on the terms and conditions set forth in this
     Agreement.

1.2  The Executive, throughout the term of this Agreement shall devote his full
     time and attention to business and affairs of the Company and shall not,
     without the consent in writing of the Chairman of the Board undertake any
     other business or occupation or become an officer, employee, agent or
     consultant of any company, firm or individual nor hold more than 5% of the
     issued shares or stock of any company.

1.3  The Executive shall faithfully serve the Company and use his reasonable
     best efforts to promote the interests thereof.

2.   TERM
2.1  The appointment of the Executive shall be for three years from the date
     hereof unless terminated sooner in accordance with the provisions of this
     Agreement.

2.2  If the employment of the Executive by the Company continues, in accordance
     with the provisions of this Agreement, until December 31, 2003, the
     Executive shall have the right to remain in the employ of the Company, in
     an advisory and consulting capacity, for an additional two years (ie. until
     December 31, 2005) (the "Extended Period").  During the Extended Period the
     Executive shall perform such services as may be assigned to him from time
     to time by the Board of Directors provided he shall not be required to
     spend more than 50% of his normal working time on Company business. During
     the Extended Period the Executive shall be entitled to an annual salary
     equal to 50% of his base salary during the last
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     year of this Agreement and he shall be entitled to continue to participate
     in the Company's stock option plans.

3.   COMPENSATION

3.1  The compensation of the Executive shall be as agreed upon from time to time
     between the Executive and the Company and in no case shall it be less than
     his 2000 base salary of US $400,000 plus bonus at target of 70% of base
     salary.

4.   BENEFITS AND VACATION

4.1  The Executive shall be entitled to all benefit coverage offered by the
     Company during the term of this agreement.

5.   NON COMPETITION

5.1  The Executive agrees that the nature of the services to be provided by the
     Executive (which the Executive acknowledges are of a special, unique,
     extraordinary and intellectual character), places the Executive in a
     position of confidence and trust with suppliers, customers and employees of
     the Company. The Executive also acknowledges that the suppliers and
     customers serviced by the Company are located throughout the world and,
     accordingly, it is reasonable that the restrictive covenants set forth
     herein are not limited by any geographical area. The Executive understands
     and accepts the provisions of this Agreement may limit the employment
     opportunities available to the Executive following the termination of this
     Agreement. The Executive understands and agrees that it is reasonable and
     necessary for the protection and goodwill of the business of the Company
     that the Executive makes the covenants contained herein.

5.2  Accordingly, it is agreed that the Executive will not, at any time during
     the 24 months next following the termination of this Agreement for any
     reason (and for greater certainty, whether such termination is for cause or
     not for cause or by resignation of the  Executive or by frustration of this
     Agreement or by passage of time) directly or indirectly either alone or in
     conjunction with any individual or firm, corporation, association or other
     entity, whether as principal, agent, shareholder, investor or in any other
     capacity whatsoever:

     (i)  carry on, or be engaged in, concerned with or interested in, directly
          or indirectly, any business which relates to the establishment,
          development, promotion, marketing, sales or other provision of
          products or services which are engaged  (except for an equity share
          investment in a public company whose shares are listed on a stock
          exchange where such investment does not in the aggregate exceed 5% of
          the issued equity shares of such company);
     (ii) attempt to solicit away from the Company any person or entities with
          whom the Company or both are engaged including suppliers, employees,
          customers, agents or distributors;

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     (iii)take any act as a result of which the relations between the Company
          and any of  their suppliers, customers, employees, agents,
          distributors or others may be impaired or which may otherwise be
          detrimental to the business of the Company.

6.   CONFIDENTIALITY

6.1  The Executive acknowledges that, by virtue of his position in the Company
     he will have access to confidential information belonging to the Company.
     The Executive therefore undertakes that he shall neither during the term of
     this agreement nor at any time thereafter publish, disclose or otherwise
     communicate to any person, company, business entity or other organization
     whatsoever or make use of any confidential information belonging or
     relating to the Company, except with the prior written approval of the
     Company or strictly in accordance with the terms of this Agreement.

6.2  For the purposes of this Agreement, "Confidential Information" means all
     materials relating to the business or affairs of the Company, whether of a
     technical, operational or economic nature, including, without limitation,
     all unpublished information, prices and discounts, data, designs, trade
     secrets, know-how, formulae, plans, techniques, processes, manuals,
     documents, records, drawings, specifications, samples, studies, findings,
     inventions, software, source-code, ideas whether patented, patentable or
     not, reports, information concerning employees or officers, financial
     information and plans, information relating to business and financial
     dealings, research activities, business marketing or strategic plans and
     projects whether present or future, equipment, working materials, and lists
     or identity of customers whether they be in written, graphic, oral form or
     other form whatever prepared by the Company or by the Executive on behalf
     of or for the Company or otherwise disclosed to the Executive in the course
     of his engagement and any know-how of the Company or information relating
     to the Company or to any person, firm or other entity with which the
     Company does business which is not generally known to persons outside the
     Company, and any document marked "Confidential" or which the Executive
     might reasonably expect the Company would regard as confidential. The
     Executive acknowledges that the foregoing is intended to be illustrative
     and that other confidential information may exist or arise in the future.

6.3  Without prejudice to the generality of this Article the Executive
     acknowledges that the following "Confidential Information" if disclosed or
     used in contravention of this Article would cause the Company substantial
     damage or loss:

     (i)    names of clients, customers or suppliers of the Company prior to the
            termination of this Agreement;
     (ii)   discounts, special prices or special contact terms offered to or
            agreed with clients, customers or suppliers of the Company;
     (iii)  marketing and sales strategies/plans of the Company;
     (iv)   planned new services or products of the Company;
     (v)    existing or proposed research activities of the Company;

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     (vi)  existing or proposed marketing and sales expenditures of the Company;
     (vii) any drawings, plans, designs, processes, formulae, specifications,
           know-how, trade secrets or any other technical data relating to any
           existing products or services offered to customers by the Company
           prior to the termination of this Agreement;

     (viii) any financial dealings of the Company
     (ix)  any business transactions or dealings of the Company, or;
     (x)   the decisions or contents of any board meetings of the Company.

6.4  The Executive's obligations under this Article shall apply both during the
     term of this Agreement and thereafter without limitation in time and shall
     survive the variation, renewal, extension or termination of this Agreement.

6.5  The Executive's obligations shall not apply in relation to any Confidential
     Information which:

     (i)   the Executive is authorized by the Company to disclose, publish,
           communicate or make use of, or which it is necessary for the
           Executive to disclose, publish, communicate or make use of for the
           proper and efficient discharge of his duties as an employee of the
           Company;
     (ii)  the Executive is required by law or any court or other similar
           judicial body or authority to disclose, publish or communicate; or
     (iii) has come into the public domain other than by way of unauthorized
           disclosure by the Executive.

6.6  The Executive agrees that in the event of any violation of the provisions
     of this Agreement, the Company in addition to any other right or relief to
     which it may be entitled, shall be entitled to an injunction restraining
     further breaches of this Agreement and the Company, upon applying for an
     injunction, will not be required to prove the inadequacy remedies at law.

7.   REASONABLENESS OF NON-COMPETITION AND CONFIDENTIALITY

7.1  The Executive understands and agrees that the Company has a material
     interest in preserving the relationship it has developed with its suppliers
     and customers against impairment by competitive activities of a former
     employee. Accordingly, the Executive agrees that the restrictions and
     covenants contained in Articles 5 and 6 and the Executive's agreement to
     them by the execution of this Agreement, are of the essence of this
     Agreement.

7.2  The Executive understands and agrees that the restrictions and covenants
     contained in Articles 5 and 6 constitute material inducements to the
     Company to enter into this Agreement and that the Company would not enter
     into this Agreement without such covenants.

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7.3  No claim or cause of action by the Executive against the Company, whether
     predicated on this Agreement or otherwise, nor any assertion that the
     Company has not complied with the terms of this Agreement or has breached
     this Agreement fundamentally or otherwise, shall constitute a defence or
     bar to the enforcement by the Company of the covenants or restrictions set
     out in Articles 5 or 6.

8.   TERMINATION OF EMPLOYMENT
8.1  The parties understand and agree that this Agreement may be terminated in
     the following manner in the specified circumstances;

     8.1.1  By the Company, in its absolute discretion, without any notice or
     pay in lieu thereof, for cause. Any exercise of discretion pursuant to this
     paragraph shall require the affirmative vote of not less than six members
     of the Board of Directors excluding the Executive.  For the purposes of
     this Agreement, cause includes the following:

          (i)  any material breach of the provisions of this Agreement;
          (ii) the failure or refusal of the Executive to comply with the lawful
               directions or instructions of the Company on any material matter;
          (iii) any conduct of the Executive which in the reasonable opinion of
               the Company, tends to bring himself or the Company into
               disrepute;
          (iv) conviction of the Executive of a criminal offence punishable by
               felony conviction;
          (v)  any material act of dishonesty directed at the Company or any
               client of the Company;
          (vi) any mental or physical disability or illness which results in the
               Executive being unable to substantially perform the duties
               assigned pursuant to this Agreement for a continuous period of
               150 days or for periods aggregating 180 days in any period of 365
               days;

          (vii) use by the Executive of drugs or of alcohol in a manner which
               materially affects his ability to perform his employment duties.

     8.1.2  Failure by the Company to rely on the provision of this Article to
            terminate this Agreement or to sanction or admonish the Executive in
            any given instance or instances, shall not constitute a ratification
            of the act or acts in question nor be deemed a waiver of the strict
            terms of this Article.

8.2  The parties understand and agree that any offer or giving of notice (or
     payment of pay in lieu of notice) by the Company to the Executive on
     termination or proposed termination of this Agreement shall be without
     prejudice and shall not prevent the Company from alleging cause for the
     termination.

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8.3  In the event that the employment of the Executive is terminated by the
     Company during the term of this Agreement without cause, the Executive
     shall be entitled to the salary and benefits described in Appendix A to
     this Agreement. Upon compliance by the Company of this paragraph, the
     Executive shall not be entitled to pursue any legal action of any kind for
     any additional payment or notice required to be given.

8.4  The Executive may voluntarily resign his employment at any time provided he
     shall give the Company 90 days notice in writing of his intention to do so.
     In the event of his voluntary resignation the Executive shall be entitled
     to receive his salary and other benefits up to, but not after, the date of
     termination of his employment.

8.5  On termination of employment the Executive shall immediately resign all
     offices held (including directorships in the Company and save as provided
     in this Agreement, the Executive shall not be entitled to receive any
     severance payment or compensation for loss of office or otherwise by reason
     of the resignation. If the Executive fails to resign as set out herein on
     seven days notice, the Company is irrevocably authorized to appoint some
     person in the Executive's name and on the Executive's behalf to sign any
     documents or do any things necessary or requisite to give effect to it.

9.   EMPLOYER'S PROPERTY

9.1  The Executive acknowledges that all things furnished by the Company to the
     Executive, and all equipment, automobiles, credit cards, books, records,
     reports, files, manuals, literature, confidential information or other
     materials shall remain and be considered the exclusive property of the
     Company at all times and shall be surrendered to the Company, in good
     condition, promptly on the termination of the Executive's employment
     irrespective of the time, manner or cause of the termination unless
     expressly provided in this Agreement.  The foregoing shall not include
     anything purchased with the Executive's personal expense allowance.

9.2  Any and all documents, drawings, things, techniques, computer programs or
     related data, inventions or improvements of which the Executive may
     conceive or make or assist in the conception or making during the period of
     this Agreement relating or in any way appertaining to or connected with the
     duties, responsibilities or work of the Executive pursuant to this
     Agreement or any of the matters which have been, are, may become or were
     intended to become the subject of the undertakings of the Company shall be
     the sole and exclusive property of the Company, as the case may be. The
     Executive will, whenever requested by the Company whether during or after
     the termination of this Agreement, execute any and all applications,
     assignments and other instruments which the Company shall deem necessary in
     order to apply for and obtain patents, copyright, trademark protection or
     other rights or protection in any country for the said documents, drawings,
     things,

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     techniques, computer programs or related data, inventions or improvements
     and in order to assign and convey to the Company the sole and exclusive
     right, title and interest in and to the said documents, drawings, things,
     techniques, computer programs or related data, inventions or improvements.

10.  ASSIGNMENT OF RIGHTS

10.1 The rights which accrue to the Company under this Agreement shall pass to
     its successors or assigns. The rights of the Executive under this Agreement
     are not assignable or transferable in any manner.

11.  NOTICES

11.1 Any notice required or permitted to be given to the Executive shall be
     sufficiently given if delivered to the Executive personally or if mailed by
     registered mail to the Executive=s address last known to the Company.

11.2 Any notice required or permitted to be given to the Company shall be
     sufficiently given if mailed by registered mail to the Company's Head
     Office at its address last known to the Executive, Attention: Chief
     Financial Officer.

12.  SEVERABILITY

12.1 In the event that any provision or part of this Agreement shall be deemed
     void or invalid by a court of competent jurisdiction, the remaining
     provisions or parts shall be and remain in full force and effect.

12.2 In the event that any provision of this Agreement shall in its stated terms
     or breadth be deemed void or invalid or unenforceable as a result a
     decision by a court of competent jurisdiction, the said provision shall be
     valid and enforceable to the extent consistent with the principle or
     principles underlying the said decision.

13.  ENTIRE AGREEMENT

13.1 This Agreement constitutes the entire agreement between the parties with
     respect to the employment and appointment of the Executive and any and all
     previous agreements, written or oral, express or implied, between the
     parties or on their behalf, relating to the employment and appointment of
     the Executive by the Company, are terminated and cancelled.

14.  MODIFICATION OF AGREEMENT

14.1 Any modification to this Agreement must be in writing and signed by the
     parties or it shall have no effect and shall be void.

15.  HEADINGS

15.1 The headings used in this Agreement are for convenience only and are not to
     be construed in any way as additions to or limitations of the covenants and
     agreements contained in it.

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16.  GOVERNING LAW

16.1 This Agreement shall be construed in accordance with the laws of Ontario
     and the laws of Canada applicable therein.

17.  FACSIMILE

17.1 This Agreement will be valid and binding whether executed by original or
     facsimile signature.

18.  COUNTERPARTS

18.1 This Agreement may be executed in any number of counterparts, each of which
     will be deemed an original, but all of which together will constitute one
     and the same instrument.

     IN WITNESS WHEREOF this Agreement has been executive by the parties to it
on the day, month and year first written above.

       "Charles Gardner"                   "Charles D. Winston"
--------------------------------    -------------------------------------
Witness                             CHARLES D. WINSTON

                                    GSI LUMONICS INC.

                                    Per:      "Paul Ferrari"
                                    -------------------------------------
                                    PAUL FERRARI, CHAIRMAN OF THE BOARD

                                    Per:   "Benjamin Virgilio"
                                    -------------------------------------
                                    BENJAMIN VIRGILIO,
                                    Chairman, Compensation Committee

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                                  APPENDIX A

                           TERMINATION WITHOUT CAUSE

In the event that the employment of the Executive is terminated by the Company
during the term of this Agreement without cause, the Executive shall be entitled
to the following:

1.  Base salary plus bonus at 70% of base salary as at the date of termination
    to be continued for two years from the date of termination;

2.  All Company medical and insurance benefits to be continued for a period
    of two years from the date of termination.

3.  Use of leased automobile to be continued for a period of two years from
    the date of termination;

4.  Annual US $7,000 allowance for tax planning and preparation to be
    continued for a period of two years from the date of termination;

5.  All unexercised stock options that have not vested shall vest on date of
    termination. For greater certainty it is acknowledged that all options will
    expire if not exercised within 90 days of the date of termination.

                                       9<PAGE>
                                                                     Exhibit 4.3

                       AMENDMENT NO 1 TO RIGHTS AGREEMENT

  This Amendment No. 1 (the "Amendment"), dated as of March 20, 2001 is made by
and between AutoImmune Inc., a Delaware corporation (the "Company"), and
Computershare Trust Company, Inc. (formerly, American Securities Transfer,
Incorporated) (the "Rights Agent") and amends the Rights Agreement dated as of
May 19,1995 between the Company and the Rights Agent (the "Rights Agreement").

                              W I T N E S S E T H

  WHEREAS, the parties hereto are parties to the Rights Agreement; and

  WHEREAS, the parties hereto desire to amend the Rights Agreement.

  NOW, THEREFORE, in consideration of the premises and mutual agreements herein
set forth, the parties hereby agree as follows:

  1.  Section 1(a) of the Rights Agreement is amended by deleting the first
sentence in its entirety and replacing it with the following:

  "Acquiring Person" shall mean any Person (as such term is hereinafter defined)
who or which, together with all Affiliates and Associates (as such term is
hereinafter defined) of such Person, (i) shall be the Beneficial Owner (as such
term is hereinafter defined) of 15% or more of the Common Shares of the Company
then outstanding or (ii), if such Person is and continues to be a person that
meets the requirements of Sections 1(b)(i) through and including (iii) of Rule
13d-1 promulgated under the Exchange Act (as such term is hereinafter defined)
as in effect on January 1, 2001, shall be the Beneficial Owner of 25% or more of
the Common Shares of the Company then outstanding, but shall not include (A) the
Company, (B) any Subsidiary (as such term is hereinafter defined) of the
Company, (C) any employee benefit plan of the Company or any Subsidiary of the
Company, or (D) any entity holding Common Shares for or pursuant to the terms of
any such plans.

  2.  Section 1(a) of the Rights Agreement is further amended by adding the
following as the last sentence of said Section 1(a):

     If the Board of Directors of the Company determines in good faith that a
     Person who would otherwise be an "Acquiring Person", as defined pursuant to
     the foregoing provisions of this paragraph, has become such inadvertently,
     and such Person divests as promptly as practicable (and in any event within
     ten Business Days after notification by the Company) a sufficient number of
     Common Shares so that such person would no longer be an Acquiring Person,
     as defined pursuant to the foregoing provisions of this paragraph, then
     such Person shall not be deemed to be an "Acquiring Person" for any
     purposes of this Agreement.
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  3.  By execution of this Amendment, the Company shall not be deemed to have
compromised or waived any of its rights under the Rights Agreement.

  4.  Any term used herein and not defined shall have the meaning ascribed to
such term in the Rights Agreement.

  5.  This Amendment may be executed in counterparts.  Each of such counterparts
shall for all purposes be deemed to be an original, and all such counterparts
shall together constitute but one and the same instrument.

  IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly
executed as of the day and year first above written.  This Amendment may be
executed in one or more counterparts all of which shall be considered one and
the same Amendment and each of which shall be deemed to be an original.

ATTEST:                                        AUTOIMMUNE INC.

By /s/ Suzanne L. Glassburn                    By /s/ Robert C. Bishop
   --------------------------                     ----------------------
   Name: Suzanne L. Glassburn                     Name: Robert C. Bishop
                                                  Its  Chairman and CEO

ATTEST:                                        COMPUTERSHARE TRUST COMPANY, INC.

By /s/ Debbie Sorheim                          By /s/ Kellie Gwinn
   ------------------                             ------------------
   Name: Debbie Sorheim                           Name: Kellie Gwinn
                                                  Its  Vice President

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