Document:

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                             [LOGO OF PURCHASEPRO]

August 31, 1999

Mr. Dick Moskal
2201 N. Buffalo Drive, #2083
Las Vegas, NV 89128

Dear Dick:

     This letter agreement (the "Agreement") sets forth the terms and conditions
of your employment with PurchasePro.com,Inc. (the "Company").

     In consideration of the mutual covenants and promises made in this
Agreement, you and the Company agree as follows:

     1.   Employment. Commencing as of August 31, 1999 (the "Effective Date"),
          ----------
you will serve as the President of Hospitality Purchasing Systems, a wholly
owned subsidiary of PurchasePro.com. You will be given such duties,
responsibilities and authority as are appropriate to such position. Throughout
the term of your employment, you will devote such business time and energies to
the business and affairs of the Company as needed to carry out your duties and
responsibilities, subject to the overall supervision of the company's Chief
Executive Officer and/or President of the Company.

     2.   Term. The term of this Agreement will commence on the Effective Date
          ----
and shall continue for two (2) years thereafter. During the term of this
Agreement, your employment with the Company will be "at-will." Either you or the
Company can terminate your employment at any time and for any reason, with or
without cause and with or without notice, in each case subject to the terms and
provisions of paragraph 7 below.

     3.   Sa1ary. For your services to the Company, you will be paid a base
          ------
salary, payable in accordance with the Company's usual payroll practices during
your employment, at an annualized rate of $160,000 per year.

     4.   Bonus. You will receive a signing bonus of $25,000.
          -----

     5.   Employee Benefit Programs. During your employment, you will be
          -------------------------
entitled to participate in all Company employee benefit plans and compensation
and perquisite programs made available to the Company's executives or salaried
employees generally. You will be entitled to four weeks of vacation per year,
provided that you will not accrue unused vacation of more than eight weeks. The
corporation shall provide you with an expense allowance of $450 per month. HPS
will cover your living expenses, not to exceed $1,000 per month, until your
family moves out to Las Vegas. HPS will pay for the expense of moving your car
to Las Vegas, and will cover your moving expenses for your family upon prior
from the Company President.
<PAGE>

Mr. Dick Moskal
Page 2
August 31, 1999

     6.  Stock Options. The Corporation will provide you with the following
         -------------
options (collectively, "Stock Options") to acquire shares of the Corporation's
Class A Common Stock ("Shares"):

On the Effective Date, Stock Options to purchase 75,000 Shares at $10.80 (90% of
the midrange of the currently estimated IPO price at $11-$13 (subject to SEC
rules and restrictions imposed upon the officers and major shareholders of the
Corporation). The Stock Options will be exercisable at any time during the ten
(10) year period commencing on vesting of such Stock Options, as follows: (i)
Stock Options on 50,000 Shares shall vest six months after the effective date,
(ii), Stock Options on 12,500 Shares shall vest one year after the effective
date, and (iii) Stock Options on 12,500 Shares shall vest two (2) years after
the Effective Date. No vesting shall occur under this Section on or after the
termination of your employment except in the event that your employment is
terminated without cause as referenced in Section 7(b) below or should you die
or be permanently disabled per section7(d).

     7.  Consequences of Termination of Employment.
         -----------------------------------------

     (a) For Cause. If the Company terminates your employment for Cause you will
         ---------
be entitled to any unpaid salary, bonus and vacation due you pursuant to
paragraphs 3, 4 and 6 above through the date of termination, and you will be
entitled to no other compensation from the Company. "Cause" will exist in the
event you: (i) willfully breach this Agreement, which breach is not cured within
10 days following written notice from the Company, (ii) engage in conduct
constituting willful dishonesty toward, fraud upon, or deliberate or attempted
injury to the Company; or (iii) are negligent in the performance of your duties,
which negligence is not cured within 10 days following written notice from the
Company.

     (b) Other than for Cause. If the Company terminates your employment for
         --------------------
reasons other than Cause, you will be entitled to any unpaid salary, bonus and
vacation due you pursuant to paragraphs 3, 4 and 6 above through the date of
termination plus twelve (12) months of your base salary in effect at the date of
your termination of employment. You will not be entitled to any other
compensation from the Company.

     (c) Voluntary Termination. If you terminate your employment with the
         ---------------------
Company of your own volition, such termination will have the same consequences
as a termination for Cause under subparagraph (a) above.

     (d) Death or Disability. If your employment with the Company terminates as
         -------------------
a result of your death or total and permanent disability, such termination will
have the same consequences as a termination by the Company other than for Cause
under subparagraph (b) above.

     (e) Release of Claims. As a condition to the receipt of the payments
         -----------------
described in this paragraph 7, you shall be required to execute a release of all
claims arising out of your employment or the termination thereof including, but
not limited to, any claim of discrimination under state or federal law, but
excluding claims for indemnification from the Company under any
<PAGE>

Mr. Dick Moskal
Page 3
August 31, 1999

indemnification agreement with the Company, its certificate of incorporation and
by-laws or applicable law or claims for directors and officers' insurance
coverage.

(f)  Conditions to Receipt of Payments and Benefits. In view of your position
     -----------------------------------------------
and access to proprietary information, as a condition to the receipt of payments
described in this paragraph 7, you shall not, without the Company's written
consent, directly or indirectly, alone or as a partner, joint venturer, officer,
director, employee, consultant, agent or stockholder (other than a less than 5%
stockholder of a publicly traded company), within one year of your date of
termination from the Company (i) engage in any activity which is in competition
with the business, the products or services of the Company, (ii) solicit any of
the Company's employees, consultants or customers, (iii) hire any of the
Company's employees or consultants in an unlawful manner or actively encourage
employees or consultants to leave the Company, or (iv) otherwise breach your
proprietary information obligations. You agree to execute and comply with the
form of proprietary information agreement adopted by the Company.

     8.   Assignability; Binding Nature. Commencing on the Effective Date, this
          -----------------------------
Agreement will be binding upon you and the Company and your respective
successors, heirs, and assigns. This Agreement may not be assigned by you except
that your rights to compensation and benefits hereunder, subject to the
limitations of this Agreement, may be transferred by will or operation of law.
No rights or obligations of the Company under this Agreement may be assigned or
transferred except by operation of law in the event of a merger or consolidation
in which the Company is not the continuing entity, or the sale or liquidation of
all or substantially all of the assets of the Company, provided that the
assignee or transferee is the successor to all or substantially all of the
assets of the Company and assumes the Company's obligations under this Agreement
contractually or as a matter of law.

     9.   Governing Law. This Agreement will be deemed a contract made under,
          -------------
and for all purposes shall be construed in accordance with, the laws of Nevada
(without regard to its choice of law provisions).

     10.  Arbitration. The parties agree that any disputes arising out of or
          ------------
related to the Agreement shall be resolved by using the following procedures:

     (a)  The party claiming to be aggrieved shall furnish to the other party a
written statement of the grievance and the relief requested or proposed.

     (b)  If the other party does not agree to furnish the relief requested or
proposed, or otherwise does not satisfy the demand of the party claiming to be
aggrieved, the parties shall submit the dispute to non-binding mediation before
a mediator to be jointly selected by the parties.

     (c)  If the mediation does not produce a resolution of the dispute, the
parties agree that the dispute shall be resolved by final and binding
arbitration in Las Vegas, Nevada. The parties shall attempt to agree to the
identity of an arbitrator, and, if they are unable to do so, they will obtain a
list of
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Mr. Dick Moskal
Page 4
August 31, 1999

arbitrators from the Judicial Arbitration and Mediation Service and select an
arbitrator by striking names from that list. The arbitrator shall have the
authority to determine whether the conduct complained of violates the rights of
the complaining party and, if so, to grant any relief authorized by law. The
arbitrator shall not have the authority to modify, change or refuse to enforce
the terms of this Agreement.

     (d)  Arbitration shall be the exclusive final remedy for any dispute
between the parties, and the parties agree that no dispute shall be submitted to
arbitration where the party claiming to be aggrieved has not compiled with the
preliminary steps provided for above, provided however, that this Section 10
shall not be construed to eliminate or reduce any right the Company or the
Executive may otherwise have to seek and obtain from a court a temporary
restraining order or a preliminary or permanent injunction to enforce the
restrictions of subparagraph 5(f) of this Agreement. The parties agree that the
arbitration award shall be enforceable in Clark County Superior Court so long as
the arbitrator's findings of fact are supported by substantial evidence on the
whole and the arbitrator has not made errors of law.

     11.  Withholding. Anything to the contrary notwithstanding, following the
          -----------
Effective Date all payments made by the Company hereunder to you or your estate
or beneficiaries will be subject to tax withholding pursuant to any applicable
laws or regulations. In lieu of withholding, the Company may, in its sole
discretion, accept other provision for payment of taxes as required by law,
provided it is satisfied that all requirements of law affecting its
responsibilities to withhold such taxes have been satisfied.

     12.   Entire Agreement and Release of Existing Claims and Obligations.
           ---------------------------------------------------------------
This Agreement also supersedes completely all understandings and agreements,
whether oral or in writing between you and the Company's subsidiary Hospitality
Purchasing Systems, also known as HPS. You specifically acknowledge that this
agreement supersedes the September 30, 1998 letter agreement by which you became
Chief Operating Officer of HPS. You acknowledge that neither the Company nor HPS
owes any further obligations to you under the September 30, 1998 letter
agreement.  This acknowledgement includes your express recognition that (1) you
do not now own any equity interest in HPS, and (2) you do not have any option or
contingent interest in such equity. You also acknowledge that you have no
options on Company stock other than the options set out in this Agreement. You
hereby release any rights to and disclaim any other equity interests in the
Company and any of its subsidiaries other than the options set out in this
Agreement.  With the exception of the obligations that the Company owes to you
under this Agreement and the obligations that the law otherwise imposes on the
Company for actions taken after the date of this Agreement, you also hereby
release and forever discharge the Company, its subsidiaries and predecessors,
and all of their employees, officers and directors and all of their respective
affiliates, agents, attorneys and assigns from any and all claims, demands,
damages, actions, causes of action or suits, options, agreements, contracts,
covenants, promises, judgments and executions whatsoever, in law or equity,
whether known or unknown, whether direct or indirect, and whether asserted
affirmatively or by way of cross-claim, counterclaim, offset or any other
procedural means, that you now have, have had or can, shall or may have against
any of them. This release specifically includes any claims arising out of the
Americans with Disabilities
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Mr. Dick Moskal
Page 5
August 31, 1999

Act. In giving this release, you understand that if any fact with respect to any
matter covered by this release is found hereafter to be other than the facts you
now believe to be true, you expressly assume the risk of such differences in
fact and agree that this release shall nevertheless remain effective. You
expressly waive and relinquish all rights, benefits and reservations conferred
by the law of any state, or principal of common law that is similar to,
comparable to or equivalent to section 1542 of the California Code of Civil
Procedures, which provides: A general release does not extend to claims which
the creditor does not know or suspect to exist in his favor at the time of
executing the release which if known by him must have materially affected his
settlement with the debtor.

     13.  Miscellaneous. No provision of this Agreement may be amended or waived
          -------------
unless such amendment or waiver is agreed to by you and the Chief Executive
Officer or President of the Company in writing. No waiver by you or the Company
of the breach of any condition or provision of this Agreement will be deemed a
waiver of a similar or dissimilar provision or condition at the same or any
prior or subsequent time. In the event any portion of this Agreement is
determined to be invalid or unenforceable for any reason, the remaining portions
shall be unaffected thereby and will remain in full force and effect to the
fullest extent permitted by law.

    Please indicate your acceptance and understanding of the terms of this
Agreement by signing and dating below.

                                             Sincerely,

                                             PURCHASEPRO.COM, INC.

                                             By /s/ [ILLEGIBLE]^^
                                               ---------------------

                                             Its Pres/CEO
                                                --------------------

ACKNOWLEDGED AND AGREED:

/s/ Richard T. Moskal
---------------------------
(Dick Moskal)

Dated: 9/3, 1999<PAGE>

                                                                   EXHIBIT 10.28

                             EMPLOYMENT AGREEMENT
                             --------------------
I.   Employment and Duties
     ---------------------

Purchase Pro hereby employs, engages and hires Employee as Controller to perform
all the duties of the Controller. Employee hereby accepts and agrees to such
employment, engagement and hiring, subject to the general supervision and
pursuant to the orders, advice and direction of the Board of Directors, Chief
Executive Officer, President and/or Chief Financial Officer of Purchase Pro. It
is expressly understood that Purchase Pro intends to promote Employee to the
position of Chief Financial Officer at, or near, the time that Purchase Pro
completes its Initial Public Offering, or at the time the current Chief
Financial Officer leaves his employment with Purchase Pro, if earlier than the
Initial Public Offering. This intention to promote Employee to Chief Financial
Officer is subject to the Employee's performance as Controller and does not
imply a guarantee of a promotion.

Employee agrees that he will at all times faithfully, industriously, and to the
best of his ability, and talents, perform all of the duties that may be required
of and from him pursuant to the express and implicit terms hereof, to the
reasonable satisfaction of the Board of Directors, Chief Executive Officer,
President and/or Chief Financial Officer of Purchase Pro. Such services shall be
rendered in Las Vegas, Nevada, and at such other place or places as Purchase Pro
shall in good faith require or as the interest, needs, business, or opportunity
of employer shall require. Employee shall devote all of his time, attention,
knowledge, and skills solely to the business and interests of Purchase Pro, and
Purchase Pro shall be entitled to all of the benefits, profits or other issues
arising from or incident to all work, services, and advise of Employee.

II.  Compensation and Fringe Benefits
     --------------------------------

Purchase Pro shall pay Employee, and Employee shall accept from Purchase Pro, as
payment for Employee's services hereunder, compensation at the initial rate of
One Hundred Thousand Dollars ($100,000) per annum, subject to periodic increases
thereafter, pursuant to the recommendation of the Board of Directors, Chief
Executive Officer, President or Chief Financial Officer. Such compensation shall
be paid in accordance with the normal payroll periods of Purchase Pro. At the
time the Employee is promoted to Chief Financial Officer, as contemplated in
Section 1, Purchase Pro and the Employee will renegotiate the salary and other
pertinent terms of this agreement.

Purchase Pro shall initially grant to Employee options to purchase twenty
thousand (20,000) shares of Purchase Pro common stock at a price of $2.50 per
share with exercise rights on the same terms and conditions as other key
employees. Purchase Pro has the right to grant additional shares to the Employee
at its discretion.

Employee shall be entitled to an annual bonus at the discretion of the Board of
Directors, Chief Executive Officer, President and Chief Financial Officer. It is
expressly understood that Purchase Pro intends to grant to Employee a special
bonus at the completion of its Initial Public Offering, in an amount to be
determined by the Board of Directors, Chief Executive Officer, President and
Chief Financial Officer.

Employee shall be entitled to participate with other employees of Purchase Pro
in Purchase Pro's medical and dental coverage plan provided under the Purchase
Pro Health Care Plan (the "Plan"). Purchase Pro agrees to pay for Employee and
his dependents cost to participate in the Plan.

Employee shall be entitled to a paid annual vacation of two (2) weeks. Without
Purchase Pro's consent, vacation time may not be accumulated but must be taken
in the year earned. Employee's vacation will be scheduled at those times
convenient to Purchase Pro's business as
<PAGE>

determined by the Board of Directors, Chief Executive Officer, President or
Chief Financial Officer.

Employee shall be entitled to holidays and reasonable sick leave as provide for
in the Purchase Pro Employee Handbook.

III. Professional Organizations
     --------------------------

Employee shall be allowed sufficient time each year to attend professional
meetings, seminars and continuing education courses subject to the
recommendation of the Board of Directors, Chief Executive Officer, President or
Chief Financial Officer: provided that attendance at such meetings, seminars or
continuing professional education courses shall be planned for minimum
interference with the business of Purchase Pro. Purchase Pro shall pay on behalf
of Employee, or reimburse Employee, the costs and expenses of maintaining his
Certified Public Accountant's license and membership in the following
professional organizations: (i) American Institute of Certified Public
Accountants ("AICPA"), and (ii) state sponsored societies of certified public
accountants. If, at a future date, Purchase Pro determines that the Employee
shall obtain and maintain membership in additional professional organizations,
then Purchase Pro shall pay on behalf of, or reimburse Employee for, those
membership costs. Purchase Pro shall pay on behalf of, or reimburse Employee,
the costs of maintaining his continuing professional education requirements of
the AICPA and state-sponsored societies, including costs of enrollment/tuition,
travel to and from such courses, hotel costs, and other reasonable costs.
Minimum requirements are 80 hours in the first year and 40 hours per year
thereafter.

IV.  Confidential Information
     ------------------------

Employee agrees that during his employment, he will not disclose any information
or data concerning the business or clients of Purchase Pro, disclosed to or
acquired by him in confidence at any time during the period of his employment.

Employee shall not at anytime or in any manner, either directly or indirectly,
divulge, disclose or communicate to any person, firm or corporation in any
manner whatsoever any information concerning any matters affecting or relating
to the business of Purchase Pro, including without limiting the generality of
the foregoing, any of its clients. Its manner of operation, its plans, process,
or other data without regard to whether all of the foregoing matters will be
deemed confidential, material, or important, the parties hereto stipulating that
as between them, the same are important, material, and confidential and gravely
affect the effective and successful conduct of the business of Purchase Pro, and
Purchase Pro's goodwill, and that any breach of the terms of this paragraph
shall be a material breach of this agreement.

Employee further agrees that these terms shall remain in full force and effect
after the termination of Employee's employment for any reason, and employee
shall not make or permit the making of public or private announcement or
statement of any kind with respect to same.

V.   Termination
     -----------

This agreement may be terminated by either party on five (5) days written notice
to the other. In the event of any violation by Employee of any terms of this
agreement, Purchase Pro thereon may terminate employment without notice and with
pay only to the date of such termination. This agreement will terminate
immediately if Employee fails or refuses to diligently perform the duties of his
employment and the provisions of this agreement, and upon the death of Employee.

It is definitely understood and agreed that the Board of Directors, Chief
Executive Officer, President and Chief Financial Officer will be the judges as
to the efficiency with which Employee carries on his work, and Purchase Pro
reserves the right, at any time to remove Employee, without prejudice, and
without the right of recovery of damages to Employee.
<PAGE>

If Purchase Pro terminates the employment of the Employee without good cause,
then Purchase Pro and the Employee shall negotiate a severance package at that
time, and such severance package shall at a minimum consist of three (3) months'
compensation, at the then current compensation amount, and continue payment of
medical and dental coverage for the Employee and his dependents for a minimum of
three (3) months.

VI.  Modification of Agreement
     -------------------------

No waiver or modification of this agreement or any covenant, condition, or
limitation herein contained shall be valid unless in writing and duly executed
by both parties, and no evidence of any waiver or modification shall be offered
or received into evidence at any proceeding, arbitration, or litigation between
the parties hereto arising out of or affecting this agreement, or the rights or
obligations of the parties hereunder, unless such waiver or modification is in
writing, duly executed as aforesaid, and the parties further agree that the
provisions of this section may not be waived except as herein set forth.

VII. Choice of Law
     -------------

This agreement shall be governed by the laws of the State of Nevada.

Agree to:

By:  /s/ Charles E. Johnson, Jr.               10/5/98
    --------------------------------         ------------------
    Charles E. Johnson, Jr.                  Date
    Chief Executive Officer
    Purchase Pro International, Inc.

By:  /s/ Scott H. Miller                       10/5/98
    --------------------------------         -------------------
    Scott H. Miller                          Date
    Controller
    Purchase Pro International, Inc.

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