Document:

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                                                                    EXHIBIT 10.9

                         EXECUTIVE EMPLOYMENT AGREEMENT

         THIS EXECUTIVE EMPLOYMENT AGREEMENT (the "Agreement") is made as of the
15th day of December 1999 between George Landgrebe, an individual resident of
the State of Connecticut ("Executive"), and eShare Technologies, Inc., a Georgia
corporation with its principal place of business located in Norcross, Georgia
(the "Company").

         WHEREAS, the Company desires to employ Executive as the Chief Operating
Officer of the Company, and Executive desires to accept said employment from the
Company; and

         WHEREAS, the Company and Executive have agreed upon the terms and
conditions of Executive's employment with the Company and the parties desire to
express the terms and conditions in this employment agreement.

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged and accepted, the parties hereby
agree as follows:

1. EMPLOYMENT OF EXECUTIVE. The Company hereby employs Executive, and Executive
hereby accepts such employment from the Company, under the terms of this
Agreement, beginning on December 15, 1999 and continuing until terminated as
provided herein.

2. DUTIES. Executive shall be employed on a full-time basis, as the Chief
Operating Officer of the Company. Executive's responsibilities as Chief
Operating Officer of the Company shall be to take such action to involve himself
in the general overall and day to day management and operations of the Company
in a manner as the Chief Executive Officer or Board of Directors of the Company
(the "Board of Directors") from time to time deems appropriate under the
circumstances.

3. BASE SALARY. Executive's base salary for the period December 15, 1999 through
December 31, 1999 is $5,250. Commencing on the January 1, 2000 and thereafter
while Executive is employed by the Company, the Executive's base salary shall be
$21,000 per month (the "Base Salary"). Base Salary earned for the period
December 15, 1999 through December 31, 1999, will be paid directly to Executive
by the Company (less lawful withholding). Beginning with Base Salary earned
after January 1, 2000, the Base Salary shall be paid to Executive by the Company
(less lawful withholding) as earned in arrears in accordance with the Company's
regular payroll practice as in effect from time to time as follows:
                          $15,000 per month to Executive
                          $  6,000 per month to Performance Leadership LLC

4. BONUS. Executive shall be eligible to receive, in addition to the Base
Salary, a performance bonus that may be awarded and paid as determined by the
Board of Directors.

5. BENEFITS AND OTHER COMPENSATION. Commencing on the Effective Date of this
Agreement and during the Term of this Agreement, the Company shall provide the
benefits described below.

         (a) Management Stock Incentive Program. The Executive shall be eligible
to participate in the Company's stock option, stock purchase, or other stock
incentive plan generally available to senior managers of the Company and shall
be eligible for the grant of stock options, restricted stock and other awards
thereunder. Upon execution of this Agreement and approval of the Board of
Directors and subject to the terms of the Company's 1997 Stock Option Plan (the
"Stock Option Plan") and the terms of this Agreement, the Company shall grant to
Executive, 50,000 stock options (the "Employment Options"). The Employment
Options shall have four year straight line vesting. The Executive shall be
eligible to participate in the Change in Control agreement offered to other
members of the executive team.

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         (b) Paid Time Off. Executive shall have the right to paid time off in
accordance with the policy of the Company.

         (c) Insurance and Other Benefits. The Company shall make available to
Executive the opportunity to subscribe to insurance coverage (at Executive's
expense, covering 100% of the insurance premium) for Executive in accordance
with the terms of the Company's insurance plan, if any, as it exists from time
to time and shall provide Executive with coverage under all other employee
benefits plans, programs and policies which the Company maintains from time to
time for the benefit of its executive employees.

         (d) Expenses. Executive shall be reimbursed monthly by the Company for
the ordinary and necessary business expenses incurred by him in the performance
of his duties for the Company; provided that Executive shall first document said
business expenses in the manner generally required by the Company under its
standard employee business expense reimbursement policies and procedures.
Company will provide the use of a local apartment near the Company headquarters
and reimburse Executive the actual cost of four coach class round trip tickets
per month between Executive's residence in Connecticut and Atlanta, Georgia, the
cost of which is not to exceed $1,500 per month. Executive will use all
reasonable efforts to purchase airline tickets in a manner so as to minimize the
cost, consistent with reasonable planning and good business practice.
Executive will be responsible for his living and other expenses while in the
metropolitan Atlanta area.

6.       TERM; TERMINATION.

         (a) This Agreement and the Executive's employment hereunder may be
terminated as follows:

                  (i) immediately, without any notice by or to either party
         hereto, upon the death of the Executive;

                  (ii) immediately, by the Company for the Disability of the
         Executive upon delivery by the Company to the Executive of a Notice of
         Termination;

                  (iii) immediately by the Company for Cause which cause has not
         been cured within ninety (90) days (except in such instance where the
         Cause cannot reasonably be cured) upon delivery by the Company to the
         Executive of a Notice of Termination;

                  (iv) upon ninety (90) days prior written notice by the Company
         other than for Cause upon delivery by the Company to the Executive of a
         Notice of Termination; or

                  (v) upon ninety (90) days prior written notice by the
         Executive upon delivery by the Executive to the Company of a Notice of
         Termination.

         (b) If the Executive's employment with the Company shall be terminated
during the Term:

                  (i) by reason of the Executive's death, the Company shall pay
         to the Executive's estate or legal representative within thirty (30)
         days after the Termination Date, a lump sum cash payment equal to the
         Executive's Accrued Compensation, and any outstanding Employment
         Options granted to the Executive under the Stock Option Plan, to the
         extent (and only to that extent) that such Employment Options would
         have been exercisable by Executive on the Termination Date, shall be
         exercisable by the Executive's legal representative. Such options must
         be exercised by Executive's legal representative, if at all, within
         thirty (30) days after the Termination Date, provided, however, that no
         option shall be exercisable after its expiration;

                  (ii) by the Company for Disability, the Company shall pay to
         the Executive or Executive's legal representative within thirty (30)
         days after the Termination Date, a lump sum cash

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                  payment equal to the Executive's Accrued Compensation, and any
                  outstanding Employment Options granted to the Executive under
                  the Stock Option Plan, to the extent (and only to the extent)
                  that such Employment Options would have been exercisable by
                  Executive on the Termination Date, shall be exercisable by the
                  Executive or Executive's legal representative. Such options
                  must be exercised by Executive or his legal representative, if
                  at all, within thirty (30) days after the Termination Date,
                  provided, however, that no option shall be exercisable after
                  its expiration;

                           (iii) by the Company for Cause, the Company shall pay
                  to the Executive within thirty (30) days after the Termination
                  Date a lump sum cash payment equal to the Executive's Accrued
                  Compensation. All unvested Employment Options, or any other
                  options or similar rights whatsoever, shall be immediately
                  forfeited by Executive upon termination by the Company for
                  Cause;

                           (iv) by the Company other than for Cause, the Company
                  shall pay to the Executive within thirty (30) days after the
                  Termination Date a lump sum cash payment equal to the
                  Executive's Accrued Compensation plus one month's Base Salary
                  (not to exceed six months) for each two months worked. All
                  unvested Employment Options, or any other options or similar
                  rights whatsoever, shall be forfeited by Executive upon
                  termination by the Company other than for Cause.
                  Notwithstanding the foregoing, all such vested Employment
                  Options shall be exercisable for a period of thirty (30) days
                  following the Termination Date, after which they shall lapse
                  and be void if not exercised; provided, however, that no
                  option shall be exercisable after its expiration.

                           (v) in the event the Executive resigns from his
                  employment with the Company pursuant to Section 6(b)(v)
                  hereof, then the Company shall pay to the Executive within
                  thirty (30) days after the Termination date a lump sum cash
                  payment equal to the Executive's Accrued Compensation and all
                  unvested Employment Options, or any other options or similar
                  rights whatsoever, shall be forfeited by Executive upon his
                  resignation. Notwithstanding the foregoing, all such vested
                  Employment Options shall be exercisable for a period of thirty
                  (30) days following the Termination Date, after which they
                  shall lapse and be void if not exercised; provided, however,
                  that no options shall be exercisable after its expiration
                  date.

         (d) The pay and benefits provided for in this Section 6 shall be in
lieu of any other severance pay to which the Executive may be entitled under any
Company severance plan, program, practice or arrangement. The Executive's
entitlement to any other compensation or benefits shall be determined in
accordance with the Company's employee benefit plans and other applicable
programs, policies and practices then in effect.

         (e) The benefits paid or provided herein shall be the only benefits
paid to the Executive or his estate.

 7. EXECUTIVE WORKS. Executive agrees that Executive will promptly disclose to
the Company all Executive Works (defined below). Executive hereby irrevocably
assigns to the Company all right, title and interest in and to any and all
Executive Works, created by Executive at any time prior to the Effective Date
and Executive will execute, without requiring the Company to provide any further
consideration therefor, such confirmatory assignments, instruments and documents
as the Company deems necessary or desirable in order to effect such assignment.
Executive further agrees that all Executive Works created by him during the
course of his employment by the Company are the sole property of the Company and
hereby assigns such Executive Works to the Company, and Executive will execute,
without requiring the Company to provide any further consideration therefor,
such confirmatory assignments, instruments and documents as the Company deems
necessary or desirable in order to effect such assignment. The term "Executive
Works" as used in this Agreement means any and all works of authorship,
inventions, discoveries, improvements, designs, techniques, and work product,
whether or not patentable, and in whatever form, which are created, made,
developed or reduced to practice or caused to be created, made, developed or
reduced to practice by Executive during the course of the Executive's employment
by the Company, whether created within or without the Company's facilities and
before, during or after normal business hours, including all worldwide
copyrights, trade secrets, patent rights, and all confidential, proprietary and

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property rights therein, and that relate in any way to the current or future
business of the Company or that result from any work performed by Executive for
the Company.

8. PRODUCTS, NOTES, RECORDS AND SOFTWARE. All memoranda, notes, records and
other documents and computer software made or compiled by Executive during the
course of Executive's employment by the Company or made available to him during
the course of his employment by the Company, including, without limitation, all
customer data, billing information, service data, and other technical material,
confidential information and trade secrets of the Company and its affiliates,
shall be the Company's property and Executive shall deliver all such material
(and all copies thereof) to the Company within three (3) days after any
termination of his employment with the Company.

9. NONDISCLOSURE. Executive acknowledges and agrees that during his employment
by the Company, he has had, or will have, access to trade secrets and other
confidential or proprietary information peculiar to the Company, the disclosure
or use of which would injure the Company. Therefore, Executive agrees that he
will not use, reveal, or divulge any such trade secrets if such use, revelation,
or divulgence would violate the Georgia Trade Secrets Act of 1990. In addition,
Executive agrees that during his employment by the Company and two (2) years
thereafter, he will not, directly or indirectly, use, reveal, or divulge any
such confidential information or proprietary information. However, Executive
shall not be required to keep confidential any trade secrets or confidential or
proprietary information of the Company, which is or becomes publicly available,
is independently developed by Executive outside of the scope of his employment
relationship with the Company, or is rightfully obtained from third parties.

10. NONCOMPETITION. During the course of his employment by the Company for a
period of two (2) years thereafter, Executive agrees that he shall not, within
the continental United States of America, engage in or render the services he
performs or performed for the Company to any entity (other than the Company)
engaged in a business which is directly competitive with the business of the
Company (the "Business").

11.      NONSOLITATION.

         (a) Customers. During his employment by the Company, Executive shall
not, directly or indirectly without the Company's prior written consent, contact
any customer of the Company, with whom executive, in the ordinary course of his
employment by the Company, had a material contact ("Customer") for business
purposes unrelated to furthering the Business of the Company. For a period of
two (2) years following any termination of employment of Executive, Executive
shall not, directly or indirectly, (i) contact, solicit, divert or take away,
any Customer for purposes of, or with respect to, selling a product or service
which competes with the Business of the Company, or (ii) take any affirmative
action in regard to establishing or continuing a relationship with a Customer
for purposes of making, or which directly or indirectly results in, a sale of a
product or service which competes with the Business of the Company.

         (b) Employees. During the employment of the Executive and for a period
of two (2) years following any termination of employment of Executive, Executive
shall not, directly or indirectly, recruit or hire, or attempt to recruit or
hire, any other employees of the Company who were employed by the Company during
the two (2) year period prior to any termination of Executive's employment with
Company (or shorter period if Executive had not then been employed by Company
for two (2) years or who becomes an employee of the Company during the two (2)
year period following any termination of Executive's employment with the
Company.

12. REMEDY FOR BREACH. Executive agrees that remedies at law available to the
Company for any actual or threatened breach by Executive of any of the covenants
contained in Sections 7 through 11 of this Agreement would be inadequate and
that the Company shall be entitled to specific performance by Executive of the
covenants in such paragraphs or injunctive relief against activities in
violation of such paragraphs, or both, by temporary or permanent injunction or
other appropriate judicial remedy, writ or order, in addition to any damages and
legal expenses (including attorney's fees) which the Company may be legally
entitled to recover. Executive acknowledges and agrees that the covenants
contained in Sections 7 through 11 of this Agreement shall be construed as
agreements independent of any other provisions of this or any other contract
between the parties hereto, and that the existence of any claim or cause of

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action by Executive against the Company, whether predicated upon this or any
other contract, shall not constitute a defense to the enforcement by the Company
of said covenants.

13. SURVIVAL. The provisions of Sections 7 through 12 shall survive termination
of this Agreement.

14. INVALIDITY OF ANY PROVISION. It is the intention of the parties hereto that
Sections 7 through 12 of this Agreement shall be enforced to the fullest extent
permissible under the laws and public policies of each state and jurisdiction in
which such enforcement is sought, but that the unenforceability (or the
modification to confirm with such laws or public policies) of any provision
hereof shall not render unenforceable or impair the remainder of this Agreement
which shall be deemed amended to delete or modify, as necessary, the invalid or
unenforceable provisions. The parties further agree to alter the balance of this
Agreement in order to render the same valid and enforceable.

15. CHOICE OF LAW/VENUE. This Agreement is being executed in the State of
Georgia and shall be construed and enforced in accordance with the internal laws
of the State of Georgia, without giving effect to the conflicts laws of such
state. Any action arising out of or related to this Agreement shall be brought
in the Superior Court of Gwinnett County, Georgia or federal court in the
Northern District of Georgia.

16. WAIVER OF BREACH. The waiver by the Company of a breach of any provision of
this Agreement by Executive shall not operate or be construed as a waiver of any
subsequent breach by Executive.

17. SUCCESSORS AND ASSIGNS.

         (a) This Agreement shall be binding upon and shall inure to the benefit
of the Company, its Successors and Assigns, and the Company shall require any
Successors and Assigns to expressly assume and agree to perform this Agreement
in the same manner and to the same extent that the Company would be required to
perform it if no such succession or assignment had taken place.

         (b) Neither this Agreement nor any right or interest hereunder shall be
assignable or transferable by the Executive, his beneficiaries or legal
representatives, except by will or by the laws of descent and distribution. This
Agreement shall inure to the benefit of and be enforceable by the Executive's
legal personal representative.

18. NOTICES. All deliveries, notices, consents, requests, demands and affidavits
and other communications hereunder shall be in writing and shall be deemed to
have been duly given or delivered if delivered personally or mailed by certified
mail, return receipt requested, with proper postage prepaid or if delivered by a
recognized courier service contracting for same day or next day delivery, as
follows:

Company:       eShare Technologies, Inc.
               5051 Peachtree Corners Circle
               Norcross, Georgia  30092-2500
               Attn:    Aleksander Szlam, Chairman and Chief Executive Officer

Executive:     George Landgrebe
               301 West Lyon Farm Drive
               Greenwich, Connecticut  06831-4256

         Any of the parties may designate such other address by written notice
to the other parties hereto. Any item so mailed shall be deemed to have been
delivered on the third business day following the date on which it is mailed.
Any item delivered by recognized courier service shall be deemed to have been
delivered on the first business day following the date on which it is delivered
to such courier.

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19. ENTIRE AGREEMENT. This Agreement contains the entire agreement of the
parties. This Agreement may not be changed orally but only by an agreement in
writing signed by the party against whom enforcement of any waiver, changes,
modification, extension, or discharge is sought.

20. DEFINITIONS. For purposes of this Agreement, the following terms shall have
the following meanings:

         (a) "Accrued compensation" shall mean an amount, including all amounts
earned or accrued through the Termination Date but not paid as of the
Termination Date including, (i) Base Salary of the Executive, (ii) reimbursement
for reasonable and necessary expenses incurred by the Executive on behalf of the
Company as of the Termination Date, and (iii) the performance bonus, if any,
approved by the Board of Directors.

         (b) "Cause" shall mean in the context of termination of the Executive's
employment if it is a result of:

                           (i) any act that the Board of Directors reasonably
                  determines constitutes, on the part of the Executive, fraud,
                  dishonesty, gross malfeasance of duty, or conduct grossly
                  inappropriate to the Executive's office; or

                           (ii)     indictment of the Executive of a felony; or

                           (iii) willful failure to follow the direct
                  instructions of the Chairman and/or Chief Executive Officer;
                  or

                           provided, however, that in the case of clause (i)
                  above, such conduct shall not constitute Cause unless (A)
                  there shall have been delivered to the Executive a written
                  notice setting forth with specificity the reasons that the
                  Board of Directors believes the Executive's conduct
                  constitutes the criteria set forth in clause (i), (B) the
                  Executive shall have been provided the opportunity to be heard
                  in person by the Board of Directors (with the assistance of
                  the Executive's counsel if the Executive so desires) and (C)
                  after such hearing, the termination for Cause is approved by a
                  resolution adopted in good faith by two-thirds of the members
                  of the Board of Directors.

         (c) "Disability" shall mean a physical or mental infirmity which
materially impairs the Executive's ability to substantially perform any of the
essential functions of his job with the Company for a period of 180 consecutive
days, as determined by an independent physician selected with the approval of
both the Company and the Executive.

         (d) "Effective Date" shall mean December 15, 1999.

         (e) "Notice of Termination" shall mean a written notice of termination
from the Company or the Executive which specifies an effective date of
termination, indicates the specific termination provision in this Agreement
relied upon, and sets forth in reasonable detail the facts and circumstances
claimed to provide a basis for termination of the Executive's employment under
the provision so indicated.

         (f) "Successors and Assigns" shall mean, for a corporation, a
corporation or other entity acquiring all or substantially all the assets and
business of the Company (including this Agreement), and for any individual as
the Executive, the estate, successors or heirs, and/or the legal representative
of the Executive, whether by operation of law or otherwise.

         (g) "Termination Date" shall mean, in the case of the Executive's
death, his date of death, and in all other cases, the date specified in the
Notice of Termination.

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first above written.

EXECUTIVE:                                  COMPANY:
                                            ESHARE TECHNOLOGIES, INC.

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                                          BY:
---------------------                        -----------------------------

George Landgrebe                          Aleksander Szlam, Chairman and
                                          Chief Executive Officer

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                        AMENDMENT TO EMPLOYMENT AGREEMENT

This is an amendment ("Amendment") made effective the 14th day of January 2000
to the employment agreement ("Agreement") made and entered into the 15th day of
December 1999 by and between George Landgrebe and eShare Technologies, Inc.,
hereinafter referred to as the "Company".

In consideration of the mutual covenants and agreements contained herein and
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged and accepted, the parties hereby agree as follows:

1. Definitions. For purposes of this Amendment, the following definitions shall
apply. Any terms not defined in this Amendment but defined in the Agreement
shall have the meaning set forth therein. In the event of a conflict between the
Agreement and this Amendment, the definitions of this Amendment shall control
with respect to the matters contained herein.

         A. "Change in Control" shall mean the occurrence during the Term of any
of the following events:

         (i) An acquisition (other than directly from the Company) of any voting
         securities of the Company (the "Voting Securities") by any "Person" (as
         the term person is used for purposes of Section 13(d) or 14(d) of the
         Securities Exchange Act of 1934 (the "1934 Act")) immediately after
         which such Person has "Beneficial Ownership" (within the meaning of
         Rule 13d-3 promulgated under the 1934 Act) of a majority or more of the
         combined voting power of the Company's then outstanding Voting
         Securities; provided, however, that in determining whether a Change in
         Control has occurred, Voting Securities which are acquired in a
         "Non-Control Acquisition" (as hereinafter defined) or the acquisition
         of voting securities by a Person who, immediately prior to such
         acquisition, had Beneficial Ownership of 20% or more of the combined
         voting power of the Company's then outstanding voting securities shall
         not constitute an acquisition which would cause a Change in Control. A
         "Non-Control Acquisition" shall mean an acquisition by (1) an employee
         benefit plan (or a trust forming a part thereof) maintained by (x) the
         Company, or (y) any corporation or other Person of which a majority of
         its voting power or its equity securities or equity interest is owned
         directly or indirectly by the Company (a "Subsidiary"), (2) the Company
         or any Subsidiary, or (3) any Person in connection with a "Non-Control
         Transaction" (as hereinafter defined).

         (ii) Approval by a majority of the stockholders of the Company of:

                  (A) A merger, consolidation or reorganization involving the
                  Company, unless

                  (1) the stockholders of the Company, immediately before such
                  merger, consolidation or reorganization, own, directly or
                  indirectly, immediately following such merger, consolidation
                  or reorganization, at least a majority of the combined voting
                  power of the outstanding voting securities of the corporation
                  resulting from such merger or consolidation or reorganization
                  (the "Surviving Corporation") in substantially the same
                  proportion as their ownership of the Voting Securities
                  immediately before such merger, consolidation or
                  reorganization, and

                  (2) the individuals who were members of the Incumbent Board
                  immediately prior to the execution of the agreement providing
                  for such merger, consolidation or reorganization constitute at
                  least majority of the members of the board of directors of the
                  Surviving Corporation.

                  (A transaction described in clauses (1) and (2) shall herein
                  be referred to as a "Non-Control Transaction."); or

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                  (B) An agreement for the sale or other disposition of all or
                  substantially all of the assets of the Company to any Person
                  (other than a transfer to a Subsidiary).

         Notwithstanding anything contained in this Amendment to the contrary,
         if the Executive's employment is terminated within ninety (90) days
         prior to a Change in Control and the Executive demonstrates that such
         termination (A) was at the request of a third party who has indicated
         an intention or taken steps reasonably calculated to effect a Change in
         Control (a "Third Party"), or (B) otherwise occurred in connection
         with, or in anticipation of, a Change in Control, then for all purposes
         of this Amendment, the date of a Change in Control with respect to the
         Executive shall mean the date immediately prior to the date of such
         termination of the Executive's employment.

2. Vesting of Options. If a Change in Control of the Company occurs, 100% of all
options to purchase stock of the Company previously granted by the Company to
Executive which are not yet vested at the date of the Change in Control shall
immediate vest and be fully exercisable as of such date. However, no such
options shall vest after the last date of employment with the Company.

3. Except as modified by this Amendment, the terms of the Agreement shall remain
in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Amendment as of the
date first above written.

EXECUTIVE:                      COMPANY:

GEORGE LANDGREBE                ESHARE TECHNOLOGIES, INC.

                                By:
-----------------------            ---------------------------------------
George Landgrebe                      Aleksander Szlam
                                      Chairman and Chief Executive Officer<PAGE>   1
                                                                    EXHIBIT 10.2

                              EMPLOYMENT AGREEMENT

         THIS AGREEMENT is made and entered into as of October 15, 1999, by and
between RENAL CARE GROUP, INC., a Delaware corporation (the "Company"), and R.
DIRK ALLISON (hereinafter "Employee").

                                   WITNESSETH:

         WHEREAS, the Company desires to employ Employee, and Employee desires
to be employed by the Company, on the terms and conditions contained herein; and

         NOW, THEREFORE, in consideration of the compensation payable to
Employee by the Company pursuant to this Agreement, and the mutual promises,
covenants, representations and warranties contained herein, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto do agree as
follows:

         1.       Employment.

                  Effective as of October 18, 1999 (the "Effective Date"), the
Company employs Employee and Employee accepts employment with the Company under
the terms of this Agreement.

         2.       Term.

                  This Agreement shall begin on the Effective Date, and shall
continue for an initial period beginning on the Effective Date and ending on
December 31, 2002 (the "Initial Period"), subject to earlier termination by
Employee or the Company as hereinafter provided. Unless one party gives the
other notice of non-renewal not less than sixty (60) days prior to the
expiration of the Initial Period or an additional term, this Agreement shall
renew for additional terms of twelve (12) months each, subject to earlier
termination as hereinafter provided, on the same terms and conditions (subject
to mutually agreeable modifications, if any).

         3.       Compensation and Benefits.

                  (a) Base Compensation: The Company shall pay Employee a base
salary at an annual rate of (i) Two Hundred Fifty Thousand Dollars ($250,000)
from the Effective Date through March 31, 2001 (the "Base Compensation"). Such
Base Compensation may be adjusted as provided herein. The Base Compensation is
payable according to the pay periods of the Company as may be in effect from
time to time. Such payments shall be prorated for periods less than a full pay
period. The Base Compensation shall be subject to withholding for federal, state
and local payroll and all other taxes or withholdings applicable to Employee.
Any increases of the Base Compensation shall be at the discretion of the
Company, provided that any decreases to the then current Base Compensation shall
require the consent of Employee. The Base Compensation and target percentage for
the Annual Bonus (as defined below) will be reviewed annually by the
Compensation Committee of the Company.

                  (b) Benefits: During the term of this Agreement, Employee
shall also be entitled to participate in the insurance and other fringe benefits
made available generally to

<PAGE>   2

similar employees of the Company, as such benefits may be determined from time
to time by the Company, provided that Employee shall have at least four (4)
weeks of paid vacation time. In addition, during the term of this Agreement, the
Company will provide term life insurance coverage of One Million Dollars
($1,000,000) on Employee's life with the death benefit to be payable to
Employee's estate or as otherwise directed in writing by Employee.

                  (c) Bonuses: In addition to the Base Compensation payable to
Employee pursuant to Section 3(a) above, Employee is entitled to a bonus of
Twenty-Five Thousand Dollars ($25,000) for services from the Effective Date
through December 31, 1999, which bonus will be paid when the Company pays
bonuses to other employees with respect to the year ended December 31, 1999. In
addition to the Base Compensation, Employee will be entitled to an annual bonus
for periods after January 1, 2000, with a target amount equal to not less than
fifty percent (50%) of the Base Compensation for such year based on the
Company's and Employee's achievement of performance goals reasonably established
by the Compensation Committee of the Company and, in the case of performance
goals established specifically for Employee, agreed to by Employee (the "Annual
Bonus"). The Company agrees that the Company-related performance goals for
Employee shall be substantially similar to those established for other members
of senior management.

                  (d) Expenses: The Company shall reimburse Employee for any and
all expenses reasonably incurred by employee incident to the performance of the
duties imposed upon Employee hereunder.

         4.       Duties, Extent of Services.

                  Employee is initially engaged as an employee of the Company,
and Employee shall be engaged as Executive Vice President and Chief Financial
Officer of the Company effective upon the effective date of the resignation of
Ronald Hinds from such positions. As Executive Vice President and Chief
Financial Officer, Employee shall perform such duties and responsibilities as
are typically incident thereto and shall perform in a faithful and competent
manner such additional duties as may be reasonably assigned from time to time by
the Company. Throughout the term of this Agreement, Employee shall report to the
Chairman or Chief Executive Officer of the Company. Such duties shall be
performed on a full-time basis for the Company at the Company's offices in
Nashville, Tennessee. Employee may be required, from time to time, to perform
his duties temporarily hereunder at such other place or places as the Company
shall reasonably require, provided that such period does not exceed thirty (30)
consecutive days without Employee's consent and that during any such period
Employee is able to return to Nashville, Tennessee at the Company's expense for
weekends.

                  Employee shall devote all of Employee's business time,
attention, knowledge, and skill solely to the business and interest of the
Company, and the Company shall be entitled to all the benefits, profits, and
other issues arising from, or incident to, all work, services, and advice of
Employee.

         5.       Termination.

                  This Agreement may be terminated by the parties in the manners
specified below:

                                      -2-
<PAGE>   3

                  (a) Termination without Cause. Either the Company or the
employee may terminate Employee's employment under this Agreement at any time
for any reason upon thirty (30) day's prior written notice to the other party.

                  (b) Termination for Cause. The Company may terminate this
Agreement on written notice at any time for "Cause". For purposes of this
Agreement, "Cause" shall mean: (i) Employee is convicted of, pleads guilty to,
or confesses to a felony or any crime involving any act of dishonesty, fraud,
misappropriation, embezzlement or moral turpitude, in which event the Company
may terminate this Agreement immediately, (ii) the misconduct or gross
negligence by Employee in connection with the performance of Employee's duties
hereunder, (iii) the engaging by Employee in any fraudulent, disloyal or
unprofessional conduct which results in an injury to the Company, its affiliates
or any of its or their centers, monetarily or otherwise, (iv) Employee breaches
any provision of Section 6 of this Agreement, or (v) the material failure by
Employee otherwise substantially to perform his duties with the Company (other
than any such failure resulting from the disability of Employee under Section
5(d)(i)) or the breach of any provision of this Agreement other than Section 6.
In the event of any termination for Cause pursuant to the provisions of (ii),
(iii), (iv) or (v) of this subsection, the Company shall give Employee written
notice prior to such termination detailing the specific acts, actions, failures,
or events upon which the forecast termination is based, and Employee shall have
fifteen (15) days after such written notice to cease such actions or otherwise
correct any such failure or breach. If Employee does not cease such action or
otherwise correct such failure or breach within such fifteen (15)-day time
period, or having once received such written notice and ceased such actions or
corrected such failure or breach, Employee at any time thereafter again so acts,
fails or breaches, the Company may terminate this Agreement immediately.

                  (c) Termination for Good Reason. Employee may terminate this
Agreement on written notice at any time for "Good Reason". For purposes of this
Agreement, "Good Reason" shall mean: (i) without the express written consent of
Employee, a material diminution of his position, duties, responsibilities and
status with the Company as in effect as of the Effective Date, a change in
Employee's reporting responsibilities, a material reduction of Employee's titles
or offices as in effect on the date of this Agreement, or the removal of
Employee from, or failure to re-elect Employee to, any position referred to in
Section 4 of this Agreement, except in connection with promotions to higher
office or except in connection with the termination of this Agreement for Cause;
(ii) the reduction of the Base Compensation; (iii) the requirement that Employee
relocate outside of the Nashville, Tennessee metropolitan area; (iv) the
material breach by the Company of any material provision of this Agreement,
which breach continues uncorrected and uncured for fifteen (15) days after
Employee gives notice of such breach to the Company; or (v) the termination of
this Agreement by written notice from Employee to the Company during the thirty
(30) day period immediately following the first anniversary of a Change in
Control (as defined below).

                  (d) Involuntary Termination. The employment of Employee
hereunder shall be automatically terminated by the death or disability of
Employee as outlined below.

                      (i) Disability. The Company may terminate this Agreement
at the time Employee shall have been Disabled for a continuous period of six (6)
months during any continuous twelve (12) month period. For purposes of this
Paragraph 5(d)(i), the term "Disabled" shall mean Employee's inability to
perform the essential functions of his duties, with or without reasonable
accommodation. During Employee's six month period of Disability, the

                                      -3-
<PAGE>   4
Company agrees to continue to pay Employee's Base Compensation (less regular
withholdings for payroll or other taxes and other required or proper items, and
less proceeds from all disability insurance policies or plans provided or made
available by the Company). In the event of a termination of Employee on account
of Disability, the Company shall be obligated to pay Employee's Base
Compensation for a period of six (6) months following the effective date of
termination (less regular withholdings for payroll or other taxes and other
required or proper times, and less proceeds from all disability insurance
policies or plans provided or made available by the Company). In addition, any
provisions in the relevant stock option agreements notwithstanding, all
outstanding stock options granted to Employee by the Company shall vest
immediately upon termination pursuant to this Section 5(d)(i).

                      (ii) Death. In the event Employee shall die during the
term of this Agreement, this Agreement shall terminate and Employee's estate
shall receive the remainder of the Base Compensation set forth in Section 3(a)
hereof accrued to the last day of the month in which death occurs. In addition,
any provisions in the relevant stock option agreements notwithstanding, all
outstanding stock options granted to Employee by the Company shall vest
immediately upon termination pursuant to this Section 5(d)(i).

                  (e) Post-Termination Compensation. Except as provided in
Section 5(d) above, upon termination of this Agreement, the Company shall be
relieved of all of its obligations hereunder notwithstanding any period of time
remaining under the initial or any renewal term, subject to the following:

                      (i) Termination without Cause or with Good Reason. If the
Company terminates Employee's employment hereunder without Cause under Section
5(a) above or if Employee terminates Employee's employment hereunder with Good
Reason under Section 5(c) above, then Employee shall, after the effective date
of such termination, as Employee's sole and exclusive remedy, receive the Base
Compensation (as then in effect) for a period of twelve (12) months after the
termination date plus any unpaid bonus payable for the most recently completed
calendar year plus a portion of Employee's Annual Bonus equal to the target
percentage of Base Compensation (as then in effect) multiplied by a fraction,
the numerator of which is the number of months (or portions thereof) that have
elapsed in the then-current calendar year and the denominator of which is twelve
(12). If the Employee's employment is terminated by the Company without Cause or
by Employee for good reason, Employee shall be under no duty to seek or accept
other employment; but if he shall do so, any compensation he shall receive
therefrom shall not diminish the Company's obligation to make payments required
to the Employee hereunder.

                      (ii) Termination without Good Reason. In the event that
Employee terminates his or her employment under Section 5(a) above, the
Company's obligation to pay Employee's Base Compensation shall terminate as of
the date of termination.

                      (iii) Termination for Cause. In the event that the Company
terminates Employee's employment hereunder with Cause under Section 5(b) above,
then Employee shall, after the effective date of such termination, receive the
Base Compensation (as then in effect) for a period of one (1) month after the
termination date.

                      (iv) Termination following Change in Control. If, within
twelve (12) months following a Change in Control, either (A) the Company
terminates the employment

                                      -4-
<PAGE>   5

of Employee hereunder without Cause under Section 5(a) above or (B) Employee
terminates his employment for Good Reason under Section 5(c) above (except for a
termination under clause (v) of Section 5(c)), then, in lieu of any other
compensation that may be specified herein, the Company shall pay Employee an
amount equal to (i) the Base Compensation (as then in effect) plus an amount of
Annual Bonus equal to the target percentage of Base Compensation (as then in
effect) multiplied by (ii) three (3). If Employee terminates his employment for
Good Reason under clause (v) of Section 5(c) above, then, in lieu of any other
compensation that may be specified herein, the Company shall pay Employee an
amount equal to (x) the Base Compensation (as then in effect) plus an amount of
Annual Bonus equal to the target percentage of Base Compensation (as then in
effect) multiplied by (y) two (2). The Company will make any payment due under
this clause (iv) in a single lump-sum payment not later than thirty (30) days
after termination. In the event any payment obligation under this Section 5(e)
arises, no compensation received from other employment (or otherwise) shall
reduce the Company's obligation to make the payment(s) described in this
paragraph.

                  (f) Change in Control. "Change in Control" means a change in
control of the Company of a nature that would be required to be reported
(assuming such event has not been "previously reported") in response to Item
1(a) of a Current Report on Form 8-K pursuant to Section 13 or 15(d) of the
Exchange Act of 1934 (the "Exchange Act"); provided that, without limitation, a
Change in Control shall also be deemed to have occurred at such time as:

                      (i) Any "person" within the meaning of Section 14(d) of
the Exchange Act, other than the Company; a subsidiary, or any employee benefit
plan(s) sponsored by the Company or any Subsidiary, is or has become the
"beneficial owner," as defined in rule l3d-3 under the Exchange Act, directly or
indirectly, of 25% or more of the combined voting power of the outstanding
securities of the Company ordinarily having the right to vote at the election of
directors, or

                      (ii) Individuals who constitute the Board immediately
prior to any meeting of stockholders (the "Incumbent Board") have ceased for any
reason to constitute at least a majority thereof, provided that any person
becoming a director whose election, or nomination for election by the Company's
stockholders, was approved by a vote of at least three-quarters (3/4) of the
directors comprising the Incumbent Board (either by a specific vote or by
approval of the proxy statement of the Company in which such person is named as
a nominee for director without objection to such nomination) shall be, for
purposes of this Agreement, considered as though such person were a member of
the Incumbent Board; or

                      (iii) Upon approval by the Company's stockholders of a
reorganization, merger, share exchange or consolidation, other than one with
respect to which those persons who were the beneficial owners, immediately prior
to such reorganization, merger, share exchange or consolidation, of outstanding
securities of the Company ordinarily having the right to vote in the election of
directors own, immediately after such transaction, more than 75% of the
outstanding securities of the resulting corporation ordinarily having the right
to vote in the election of directors; or

                      (iv) Upon approval by the Company's stockholders of a
complete liquidation and dissolution of the Company or the sale or other
disposition of all or substantially all of the assets of the Company other than
to a Subsidiary.

                                      -5-
<PAGE>   6

         6.       Nondisclosure, Confidentiality; Competition.

                  (a) Subject to Section 6(f) below, Employee agrees that,
during the term of this Agreement and of Employee's employment by the Company,
and for a period twelve (12) months after the termination of Employee's
employment with the Company, Employee will not in any manner, directly or
indirectly, by himself or in conjunction with any other person, (i) conduct any
of the activities or perform any of the responsibilities or duties that Employee
provided the Company during his employment by the Company for any business
entity that is competitive with the business of the Company or its affiliates or
(ii) establish or own any financial, beneficial or other interest in (other than
an interest consisting of less than one percent (1%) of a class of publicly
traded security), make any loan to or for the benefit of, or render any
managerial, marketing or other business advice, to any entity that is then
conducting activities that are competitive with those of the business of the
Company or its affiliates, in either case within a geographic territory defined
as the greater of (I) a seventy-five (75) mile radius of any renal dialysis
center, unit or facility owned or operated by the Company or an affiliate of the
Company (an "RCG Center"), or (II) the geographic area, as narrowly construed as
is practicable, from which the Company received patients at each of the RCG
Centers. For purposes of this Section, the "business of the Company or its
affiliates" shall mean owning or operating a renal dialysis center, unit or
facility, and providing practice management services to nephrologists.

                  (b) Subject to Section 6(f) below, Employee further agrees
that, for a period of three (3) years after the termination of Employee's
employment with the Company, Employee will keep confidential and not directly
divulge, or allow through a lack of reasonable care to be divulged to anyone, or
use or otherwise appropriate for Employee's own benefit or for the benefit of
others, any knowledge or information of a confidential nature with respect to
the Company's and its affiliates' current business, the Company itself, or any
of its affiliates, including all trade secrets, pricing information, marketing
information or technical information (hereinafter referred to as the
"Confidential Data"), except for (i) a disclosure that is required by law; or
(ii) information that has been made generally available to the public by the act
of one who has the right to disclose such information; or (iii) information that
has become part of the public domain through no fault of the Employee; and (iv)
was known to the Employee prior to June 1995. Employee hereby acknowledges and
agrees that the prohibitions against disclosure of Confidential Data recited
herein are in addition to, and not in lieu of, any rights or remedies which the
Company may have available pursuant to the laws of any jurisdiction or at common
law to prevent the disclosure of confidential information, and the enforcement
by the Company of its rights and remedies pursuant hereto shall not be construed
as a waiver of any other rights or available remedies which the Company may
possess in law or equity. Employee acknowledges that the Company has taken
reasonable and appropriate steps to ensure the confidentiality and
non-disclosure of all such Confidential Data. For purposes of this Section the
Company's and its affiliates' "current business" shall mean owning or opening a
renal dialysis center, unit or facility.

                  (c) Subject to Section 6(f) below, Employee further agrees
that, for a period of three (3) years after the termination of Employee's
employment with the Company, Employee will not, for his own benefit or the
benefit of others, solicit any person or entity that has or has had, or disrupt
or attempt to disrupt, any relationship, contractual or otherwise, with the
Company or an affiliate of the Company (including any patient, payor, physician,
provider, managed care organization or supplier) at any time during Employee's
employment with the Company, for the purpose of assisting, or creating such a
relationship for, any business entity

                                      -6-
<PAGE>   7

that is competitive with the Company or an affiliate of the Company. For
purposes of this Section, a business entity is competitive with the Company or
an affiliate of the Company if it provides or offers any renal dialysis service
that is provided by the Company or an affiliate of the Company.

                  (d) Subject to Section 6(f) below, Employee further agrees
that, for a period of three (3) years after the termination of Employee's
employment with the Company, Employee shall not induce, nor attempt to induce,
any employee of the Company, or any of its affiliates, to terminate such
employee's association with the Company or any of its affiliates.

                  (e) These post-employment covenants are considered by the
parties hereto to be fair, reasonable and integral for the protection of the
Company. The parties mutually agree that if a violation of any of these
covenants occurs, such violation or any threatened violation will cause
irreparable injury to the Company and the remedy at law for any such violation
or threatened violation will be inadequate. The parties acknowledge that these
covenants will survive, and remain in effect and enforceable after, termination
of this Agreement.

                  (f) The Company agrees that the forgoing covenants in
paragraphs 6(a) through (d) shall be null and void as to any period following
termination of employment in the event such termination occurs within thirteen
(13) months following a Change in Control through either (A) a termination by
the Company without Cause under Section 5(a) above or (B) a resignation by
Employee for any reason.

                  (g) Employee agrees to indemnify and hold harmless the Company
from and against any and all claims, causes of action, damages and/or any other
losses suffered or incurred by the Company as a result of any breach or
purported breach by Employee of any agreement applicable to Employee which
existed prior to the time of the entering into of this Agreement. Such
obligations of Employee to indemnify and hold the Company harmless shall include
any and all costs of defense of any such claim or threatened claim, including
reasonable attorneys' fees.

         7.       Certain Additional Payments by the Company.

                  (a) Anything in this Agreement to the contrary notwithstanding
and except as set forth below, in the event it shall be determined that any
payment or distribution by the Company to or for the benefit of Employee
(whether paid or payable or distributed or distributable pursuant to the terms
of this Agreement or otherwise, but determined without regard to any additional
payments required under this Section 7) (a "Payment") would be subject to the
excise tax imposed by Section 4999 of the Code or any interest or penalties are
incurred by Employee with respect to such excise tax (such excise tax, together
with any such interest and penalties, are hereinafter collectively referred to
as the "Excise Tax"), then Employee shall be entitled to receive an additional
payment (a "Gross-Up Payment") in an amount such that after payment by Employee
of all taxes (including any interest or penalties imposed with respect to such
taxes), including, without limitation, any income taxes (and any interest and
penalties imposed with respect thereto) and Excise Tax imposed upon the Gross-Up
Payment, Employee retains an amount of the Gross-Up Payment equal to the Excise
Tax imposed upon the Payments.

                  (b) Subject to the provisions of Section 7(c), all
determinations required to be made under this Section 7, including whether and
when a Gross-Up Payment is required and

                                      -7-
<PAGE>   8

the amount of such Gross-Up Payment and the assumptions to be utilized in
arriving at such determination, shall be made by Ernst & Young LLP or such other
certified public accounting firm as may be designated by Employee (the
"Accounting Firm") which shall provide detailed supporting calculations both to
the Company and Employee within fifteen (15) business days of the receipt of
notice from Employee that there has been a Payment, or such earlier time as is
requested by the Company. In the event that the Accounting Firm is serving as
accountant or auditor for the individual, entity or group effecting the Change
in Control, Employee shall appoint another nationally recognized accounting firm
to make the determinations required hereunder (which accounting firm shall then
be referred to as the Accounting Firm hereunder). All fees and expenses of the
Accounting Firm shall be borne solely by the Company. Any Gross-Up Payment, as
determined pursuant to this Section 7, shall be paid by the Company to Employee
within five (5) days of the receipt of the Accounting Firm's determination. Any
determination by the Accounting Firm shall be binding upon the Company and
Employee. It is possible (due to the uncertainty in the application of Section
4999 of the Code at the time of the initial determination by the Accounting Firm
hereunder) that Gross-Up Payments will not have been made by the Company which
it is ultimately determined should have been made ("Underpayment"), consistent
with the calculations required to be made hereunder. Consequently, in the event
that the Company exhausts its remedies pursuant to Section 7(c) and Employee
thereafter is required to make a payment of any Excise Tax, the Accounting Firm
shall determine the amount of the Underpayment that has occurred and any such
Underpayment shall be promptly paid by the Company to or for the benefit of
Employee.

                  (c) Employee shall notify the Company in writing of any claim
by the Internal Revenue Service that, if successful, would require the payment
by the Company of the Gross-Up Payment. Such notification shall be given as soon
as practicable but no later than ten (10) business days after Employee is
informed in writing of such claim and shall apprise the Company of the nature of
such claim and the date on which such claim is requested to be paid. Employee
shall not pay such claim prior to the expiration of the thirty (30)-day period
following the date on which it gives such notice to the Company (or such shorter
period ending on the date that any payment of taxes with respect to such claim
is due). If the Company notifies Employee in writing prior to the expiration of
such period that it desires to contest such claim, Employee shall:

                      (i) give the Company any information reasonably requested
by the Company relating to such claim,

                      (ii) take such action in connection with contesting such
claim as the Company shall reasonably request in writing from time to time,
including, without limitation, accepting legal representation with respect to
such claim by an attorney reasonably selected by the Company,

                      (iii) cooperate with the Company in good faith in order
effectively to contest such claim, and

                      (iv) permit the Company to participate in any proceedings
relating to such claim;

provided, however, that the Company shall bear and pay directly all costs and
expenses (including additional interest and penalties) incurred in connection
with such contest and shall

                                      -8-
<PAGE>   9

indemnify and hold Employee harmless, on an after-tax basis, for any Excise Tax
or income tax (including interest and penalties with respect thereto) imposed as
a result of such representation and payment of costs and expenses. Without
limitation of the foregoing provisions of this Section 7(c), the Company shall
control all proceedings taken in connection with such contest and, at its sole
option, may pursue or forgo any and all administrative appeals, proceedings,
hearings and conferences with the taxing authority in respect of such claim and
may, at its sole option, either direct Employee to pay the tax claimed and sue
for a refund or contest the claim in any permissible manner, and Employee agrees
to prosecute such contest to a determination before any administrative tribunal,
in a court of initial jurisdiction and in one or more appellate courts, as the
Company shall determine; provided, however, that if the Company directs Employee
to pay such claim and sue for a refund, the Company shall advance the amount of
such payment to Employee, on an interest-free basis and shall indemnify and hold
Employee harmless, on an after-tax basis, from any Excise Tax or income tax
(including interest or penalties with respect thereto) imposed with respect to
such advance or with respect to any imputed income with respect to such advance;
and further provided that any extension of the statute of limitations relating
to payment of taxes for the taxable year of Employee with respect to which such
contested amount is claimed to be due is limited solely to such contested
amount. Furthermore, the Company's control of the contest shall be limited to
issues with respect to which a Gross-Up Payment would be payable hereunder and
Employee shall be entitled to settle or contest, as the case may be, any other
issue raised by the Internal Revenue Service or any other taxing authority.

                  (d) If, after the receipt by Employee of an amount advanced by
the Company pursuant to Section 7(c), Employee becomes entitled to receive any
refund with respect to such claim, Employee shall (subject to the Company's
complying with the requirements of Section 7(c)) promptly pay to the Company the
amount of such refund (together with any interest paid or credited thereon after
taxes applicable thereto). If, after the receipt by Employee of an amount
advanced by the Company pursuant to Section 7(c), a determination is made that
Employee shall not be entitled to any refund with respect to such claim and the
Company does not notify Employee in writing of its intent to contest such denial
of refund prior to the expiration of thirty (30) days after such determination,
then such advance shall be forgiven and shall not be required to be repaid and
the amount of such advance shall offset, to the extent thereof, the amount of
Gross-Up Payment required to be paid.

         8.       Severability.

                  The parties hereto hereby expressly agree and contract that it
is not the intention of either party to violate any public policy, or any
statutory or common law, and that if any paragraph, sentence, clause or
combination of the same of this Agreement shall be in violation of the laws of
any state where applicable, such paragraph, sentence, clause or the combination
of the same shall be void in the jurisdictions where it is unlawful, and the
remainder thereof shall remain binding on the parties hereto. It is the
intention of the parties to make the covenants of this Agreement binding only to
the extent that they may be lawfully done under existing applicable laws. In the
event that any part of any term or covenant of this Agreement is determined by a
court of law or equity to be overly broad or otherwise unenforceable, the
parties hereto agree that such court shall be empowered to substitute, and it is
the intent of the parties hereto that such court substitute, a reasonably
judicially enforceable term or limitation in the place of such unenforceable
term or covenant, and that as so modified this Agreement shall be fully
enforceable.

                                      -9-
<PAGE>   10

         9.       Entire Agreement; Modification.

                  This Agreement constitutes the entire agreement between the
parties and supersedes any and all prior understandings or agreements, and any
changes or additions hereto must be in writing and signed by both parties. If
there is any conflict between the terms of this Agreement and any stock option
agreement or other agreement between Employee and the Company (including any
agreement entered into after the date of this Agreement), then this Agreement
shall control unless there is specific reference to superseding this Agreement
in such other agreement.

         10.      Assignment.

                  (a) The rights and benefits of Employee under this Agreement,
other than accrued and unpaid amounts due under Section 3(a) hereof, are
personal to Employee and shall not be assignable.

                  (b) This Agreement may not be assigned by the Company except
to an affiliate of the Company, provided that such affiliate assumes the
Company's obligations under this Agreement; provided, further, that if the
Company shall merge or effect a consolidation or share exchange with or into, or
sell or otherwise transfer substantially all its assets to, another business
entity, the Company may assign its rights hereunder to that business entity
without the consent of the Employee provided that it causes such business entity
to assume the Company's obligations under this Agreement and provided, further,
that the provisions of Section 5 remain in full force and effect following such
assignment.

         11.      Notice.

                  The references to the notice periods of certain "days"
contained in this Agreement shall mean calendar days. Any notice provided for in
this Agreement shall be delivered to Employee at the most recent address of
Employee listed in the Company's then current employment records. Notice to the
Company shall be delivered to the following address: c/o Renal Care Group, Inc.,
2100 West End Avenue, Suite 800, Nashville, Tennessee 37203, Attention: Chief
Executive Officer.

         12.      Waiver.

                  The waiver by any party to this Agreement of a breach of any
of the provisions contained herein shall not operate or be construed as a waiver
of any subsequent breach.

         13.      Disputes and Governing Law.

                  The Company and Employee agree that any dispute arising in
connection with, or relating to, this Agreement or the termination of this
Agreement, to the maximum extent allowed by applicable law, shall be subject to
resolution through informal methods and, failing such efforts, through
arbitration. Either party may notify the other party of the existence of a
dispute by written notice to the address indicated above in Section 11. The
parties shall thereafter attempt in good faith to resolve their difference
within thirty (30) days after the receipt of such notice. If the dispute cannot
be resolved within such 30-day period, either party may file

                                      -10-
<PAGE>   11

a written demand for arbitration with the other party. The arbitration shall
proceed in accordance with the terms of the Federal Arbitration Act and the
rules and procedures of the American Arbitration Association. A single
arbitrator shall be appointed through the American Arbitration Association's
procedures to resolve the dispute.

                  The parties agree that in the event arbitration is necessary,
the laws of the State of Tennessee and any applicable federal law shall apply.
The place of the arbitration shall be Nashville, Tennessee.

                  The award of the arbitrator shall be binding and conclusive
upon the parties. Either party shall have the right to have the award made the
judgment of a court of competent jurisdiction in the State of Tennessee.

                  In the event of a dispute arising under this Agreement, the
prevailing party shall be entitled to all reasonable attorneys' fees incurred in
connection with such dispute. The Company agrees, to the maximum extent
permitted by law and the Bylaws and Certificate of Incorporation of the Company,
to defend and indemnify the Employee against and to hold the Employee harmless
from any and all claims, suits, losses, liabilities, and expenses (including
disputes arising under this Agreement and including reasonable attorneys' fees
and payment of reasonable expenses incurred in defending against such claim or
suit as such expenses are incurred) asserted against the Employee for actions
taken or omitted to be taken by the Employee in good faith and within the scope
of his responsibilities as an officer or employee of the Company. If requested
by the Employee, the Company shall advance to the Employee, promptly following
the Company's receipt of any such request, any and all expenses for which
indemnification is available hereunder, subject to the requirements of
applicable law and the Company's Bylaws and Certificate of Incorporation.

                                      -11-
<PAGE>   12

                  IN WITNESS WHEREOF, the Company and Employee have executed
this Agreement on the day and year first above written.

                                    COMPANY:
                                    RENAL CARE GROUP, INC.

                                    By:  /s/ Sam A. Brooks
                                         ---------------------------------------
                                         Sam A. Brooks
                                         President
                                                            [Corporate Seal]

                                    EMPLOYEE:

                                    /s/ R. Dirk Allison                   (Seal)
                                    --------------------------------------
                                    R. DIRK ALLISON

                                      -12-

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