EXHIBIT 10.20
                                                                   -------------


February 5, 1998


Ad Nederlof
970 Peachtree Battle Avenue, NW
Atlanta, Georgia  90327


Dear Ad:

On behalf of Genesys Telecommunications Laboratories, Inc. (the "Company"), I am
pleased to offer employment with the Company on the following terms:

1.  You will be employed as Managing Director EMEA and member of the executive
    committee reporting to the CEO with an anticipated start date of February
    15, 1999. This offer and your employment is contingent upon:

    A. Satisfactory results of background and reference checks.
    B. Receipt of an executed copy of the Company's form of confidential
       information and invention assignment agreement (which is attached)
    C. Your agreement to devote, during your employment, your full time efforts
       to your responsibilities at the Company and not to engage in any other
       activities which would conflict with the best interests of the Company.

2.  Your base compensation will be $230,000 annualized salary ("Base Salary"),
    plus commission/bonus potential of up to $150,000 in accordance with the
    Company's bonus plan in effect, if any.

3.  We will propose to the Board that you be granted options to purchase shares
    of the Company's Common Stock under the Company's 1997 Stock Incentive Plan
    at a purchase price equal to the fair market value of such shares on the
    date the options are approved by the Board. The option will be for 300,000
    share and will vest of over a period of four years beginning with your date
    of employment, at a rate of 25% of the shares at the end of the first year
    and 1/48th of the shares at the end of each month thereafter.

4.  The options will provide for certain acceleration upon a constructive
    termination in the event of a change of control, and such provision will be
    consistent with those provided in the option agreements with similar
    officers of the Company, a copy of such language is attached hereto as
    Schedule A.

5.  You will be eligible to participate in the company's standard package of
    employee benefits, which includes medical, dental, life and disability
    insurance, a flexible spending program, and Employee Stock Purchase Plan
    (ESPP).

6.  At all times, your employment with the Company is "at-will", which means
    that employment with the Company may be terminated at any time by either you
    or the Company with or without cause or justification, subject only to the
    entitlements, liabilities and obligations set forth in 5(a)-(e), below; and
    upon any termination of


Letter to Mr. Nederlof
_____________, 1998
Page 2


    your employment, you agrees to immediately resign as an officer of Company.
    Although other terms and conditions of employment, including job duties and
    title, compensation and benefits, may be changed by the company at any time,
    the at-will nature of an employment relationship shall not change.

    (a) Termination for Cause.
        ---------------------

        (i)  In the event that Company terminates your employment for "cause,"
             Company's total liability under this Agreement shall be that
             described in 5(b)(i) below. "Cause" shall mean:

             (1) gross negligence or your repeated failure to perform your
                 duties and responsibilities to the reasonable satisfaction of
                 the CEO, President or other appropriate officer or any breach
                 by you of your fiduciary duties to the Company (including the
                 meeting of any agreed to milestone or plans). For purposes of
                 this letter, any act or acts or omission or omissions by you
                 that may have a material adverse effect on the Company's
                 operations or business shall be deemed to be a breach of you
                 duties and responsibilities to the Company; or

             (2) the commission of any criminal acts, act of fraud, embezzlement
                 or actual dishonesty by you, any unauthorized use or disclosure
                 by you of confidential information or trade secrets of Company
                 (or any Parent or Subsidiary).

        (ii) In the event that Company terminates your employment other than for
             "Cause," Company's total liability under this Agreement shall be
             that described in 5(b)(ii) below.

    (b) Entitlements and Liabilities Upon Termination. Your entitlements and the
        ---------------------------------------------
        Company's liabilities upon any termination of your employment shall be
        one of the following, depending upon the circumstances of the
        termination, as specified in 5(a) above; and you shall not be entitled
        to any further compensation, any benefits or stock vesting except as
        specified below:

        (i)  In the event of termination for cause, you shall be entitled to,
             and Company shall pay to you, your Base Salary earned through the
             date of termination, and your participation in all employee
             benefits shall cease as of the date of termination except as you
             may be eligible and elect to continue pursuant to COBRA.

        (ii) In the event of termination by Company other than for cause, and
             provided that during the period after termination for which Company
             is obligated to pay you, you comply with the obligations of 5(c)
             below, you shall be entitled to, and Company shall continue to pay
             to you, your Base Salary and COBRA continuation premiums for six
             (6) months after the date of termination.

    (c) Your Obligations.
        ----------------

        (i)  As a condition of receiving any severance payments under this
             Section 5, above, you shall be required to execute in favor of the
             Company and deliver a waiver and general release of any and all
             claims, known and unknown, in such form as the President or any
             designee shall specify.


Letter to Mr. Nederlof
_____________, 1998
Page 3


        (ii) During any period of time for which Company is making, or is
             obligated to make, any payment to you pursuant to 5(b), you shall
             hold yourself available to consult with Company in a manner
             requested by the CEO, President or any designee and shall not
             (without limiting any other obligations you may have to the
             Company):

             (1) own, engage in, have any substantial interest in, advise or
                 provide any services or labor to any person or entity engaged
                 in any business that is in any material way directly
                 competitive with the business that is conducted by Company; or

             (2) solicit, accept or receive any compensation from any person or
                 entity engaged in any business that is in any material way
                 directly competitive with the business that is conducted by
                 Company; or

             (3) contact, solicit or call upon any customer or supplier of
                 Company on behalf of any person or entity other than Company
                 for the purpose of selling, providing or performing any
                 products or services directly competitive with those provided
                 or performed by Company; or

             (4) induce or attempt to induce any person or entity to curtail or
                 cancel any business or contracts which such person or entity
                 has or is in the process of having with Company; or

             (5) induce or attempt to induce any person or entity to terminate,
                 cancel or breach any contract which such person or entity has
                 with Company, to terminate any person's employment relationship
                 with Company, or to receive or accept any benefits in the event
                 of such termination, cancellation or breach.

             You agree to enter into such additional documents or agreements
             reflecting the foregoing Section as the Company may reasonably
             request.

6.  You represent and warrant that you are not breaching any contractual
    relationship or obligation toward any other person or entity by entering
    into an employment relationship with the Company, by executing this
    Agreement or by complying with the terms and conditions of the same.
    Furthermore, you understand that Company is hiring you solely for the
    purpose of engaging your skill and expertise, and not to acquire any trade
    secret, proprietary or confidential information belonging to any other
    person or entity; and that in performing under this Agreement, you are
    prohibited by Company from disclosing any such trade secret and proprietary
    or confidential information to Company.

7.  Dispute Resolution; Arbitration in Lieu of Civil Litigation.

    (a) You and the Company (hereafter "the Parties") hereby agree that any and
        all controversies, claims or disputes that Company may have with you or
        that you may have with Company, or any of its employees, officers,
        directors, agents or assigns, which arise out of your employment with
        Company, shall be resolved through final and binding arbitration in
        accordance with National Rules for the Resolution of Employment Disputes
        of the American Arbitration Association. The arbitration shall be
        conducted in San Francisco, California before a single arbitrator
        mutually agreed by Company and you; provided that if they are unable to
        agree on a single arbitrator within 30 days of the demand by either
        party for arbitration, an arbitrator shall be designated by the San
        Francisco Office of the American Arbitration Association.

    (b) Such controversies, claims and disputes include, without limitation, any
        controversy, claim or dispute relating to your employment or the
        termination thereof, claims for


Letter to Mr. Nederlof
_____________, 1998
Page 4

        breach of contract or breach of the covenant of good faith and fair
        dealing, infliction of emotional distress, defamation and any claims of
        discrimination, harassment or other claims under the California Fair
        Employment and Housing Act, Title VII of the Civil Rights Act of 1964,
        the Age Discrimination in Employment Act, the Americans With
        Disabilities Act, the Employee Retirement Income Securities Act, the
        Family Care and Medical leave Act, and any other federal, state or local
        law or regulation now in existence or hereinafter enacted and as amended
        from time to time regarding employment, termination of employment and
        the terms and conditions of employment, including the California Labor
        Code.

    (c) The only controversies, claims or disputes not covered by this covenant
        to arbitrate, are those regarding your entitlement to benefits under the
        unemployment insurance or workers' compensation laws.

    (d) The Parties will share equally the cost of the arbitration filing and
        hearing fees and the cost of the arbitrator. Each party will bear its
        own attorneys' fees, and the arbitrator will not have authority to award
        attorneys' fees unless a statutory section at issue in the dispute
        authorizes the award of attorneys' fees to the prevailing party, in
        which case the arbitrator shall have the authority to make such award as
        permitted by the statute in question.

    (e) The Parties understand and agree that arbitration shall be instead of
        any civil litigation. This means that each party is waiving any right to
        a jury trail, and that the arbitrator's decision shall be final and
        binding to the fullest extent permitted by law and enforceable by any
        court having jurisdiction thereof.

8.  This Agreement reflects the full and complete understanding and agreement
    between you and the Company regarding your employment relationship with the
    Company, and it shall supersede any and all prior written or oral
    negotiation, offer or agreement regarding your employment relationship with
    the Company.

To indicate your acceptance of the Company's offer, please sign and date this
letter in the space provided below and return it to me.  This offer will remain
in effect for 5 calendar days from the date of this letter.  A duplicate
original is enclosed for your records.

Ad, we very much look forward to working with you.

Very truly yours,
/s/ Ori Sasson
Ori Sasson

================================================================================

Agreed and accepted: Feb. 6, 1999

/s/ Ad Nederlof                                       Feb 15, 1999
- ------------------------                         -------------------------------
Name                                             Anticipated Start Date


Letter to Mr. Nederlof
_____________, 1998
Page 5


                           Schedule A to Offer Letter
                     Acceleration for Key Officers Language

     13.  Change in Control.  Unless expressly waived by Optionee, in the event
     of  (A) the sale of all or substantially all of the Company's assets or the
     merger or consolidation of the Company (or series of transactions which
     results in such a merger or consolidation) with or into another company
     pursuant to which the shareholders of the Company immediately prior to the
     closing of such merger or consolidation (or series of transactions) own
     less than 50% of the voting securities of the surviving company immediately
     following the closing of such merger or consolidation (a "Merger" and
     collectively with sale of assets an "Acquisition"), and (B) the acquiror
     fails to provide Optionee with both cash compensation and operational
     responsibility that is at least equal in terms of salary and benefits and
     operating duties, respectively, to that which Optionee was receiving from
     the Company at the time of the Acquisition, then all of the unvested shares
     will be accelerated as of the closing date of the Acquisition and become
     fully vested immediately prior to the closing of the Acquisition.