Document:

<PAGE>

                                                                    EXHIBIT 10.6

                                                                  EXECUTION COPY
                                                                  --------------

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

                         SECURITIES PURCHASE AGREEMENT

                                     Among

                          SELECT MEDICAL CORPORATION,

                  WELSH, CARSON, ANDERSON & STOWE VII, L.P.,

                       WCAS CAPITAL PARTNERS III, L.P.,

                         THOMA CRESSEY FUND VI, L.P.,

                              GTCR FUND VI, L.P.,

                                      and

                           THE SEVERAL PERSONS NAMED
                             IN SCHEDULE I HERETO

                         Dated as of November 19, 1999

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<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                            Page
                                                                                            ----
<S>                                                                                         <C>
I.   PURCHASE AND SALE OF SECURITIES.........................................................   2
     SECTION 1.01.    Issuance and Sale of the Class B Preferred Stock.......................   2
     SECTION 1.02.    Issuance and Sale of the Note and Common Stock to WCAS CP III..........   2
     SECTION 1.03.    Closing Date...........................................................   2
     SECTION 1.04.    Springing Shares.......................................................   2
II.  REPRESENTATIONS AND WARRANTIES OF THE COMPANY...........................................   3
     SECTION 2.01.    Organization and Corporate Power.......................................   3
     SECTION 2.02.    Capital Stock and Related Matters......................................   4
     SECTION 2.03.    Subsidiaries; Investments..............................................   5
     SECTION 2.04.    Authorization of Agreements, Etc.......................................   5
     SECTION 2.05.    Validity...............................................................   6
     SECTION 2.06.    Financial Statements; Undisclosed Liabilities..........................   6
     SECTION 2.07.    Tax Matters............................................................   6
     SECTION 2.08.    Litigation, Etc........................................................   6
     SECTION 2.09.    Brokerage..............................................................   7
     SECTION 2.10.    Consents, Etc..........................................................   7
     SECTION 2.11.    ERISA..................................................................   7
     SECTION 2.12.    Compliance with Laws...................................................   7
     SECTION 2.13.    Disclosure.............................................................   7
III. REPRESENTATIONS AND WARRANTIES OF THE PURCHASERS........................................   8
     SECTION 3.01.    Investment.............................................................   8
     SECTION 3.02.    Brokerage..............................................................   9
IV.  COVENANTS...............................................................................   9
     SECTION 4.01.    Financial Statements and Other Information.............................   9
     SECTION 4.02.    Inspection of Property.................................................  10
     SECTION 4.03.    Restrictions...........................................................  10
     SECTION 4.04.    Affirmative Covenants..................................................  12
     SECTION 4.05.    Current Public Information.............................................  12
     SECTION 4.06.    Amendment of Other Agreements..........................................  13
     SECTION 4.07.    Limited Preemptive Rights..............................................  13
     SECTION 4.08.    Public Disclosures.....................................................  14
     SECTION 4.09.    Unrelated Business Taxable Income......................................  14
     SECTION 4.10.    Hart-Scott-Rodino Compliance...........................................  14
     SECTION 4.11.    Conduct of the Company's Business......................................  14
     SECTION 4.12.    Further Assurances.....................................................  15
     SECTION 4.13.    Transfer of Restricted Securities......................................  15
     SECTION 4.14.    Waiver of Preemptive Rights With Respect to the Sale of the Securities.  15
     SECTION 4.15.    Guarantees.............................................................  15
</TABLE>
<PAGE>

<TABLE>
<S>                                                                                         <C>
V.   CONDITIONS PRECEDENT....................................................................  16
     SECTION 5.01.    Conditions Precedent to the Obligations of the Purchasers
                      on the Closing Date....................................................  16
     SECTION 5.02.    Conditions Precedent to the Obligations of the Company
                      on the Closing Date....................................................  17
VI.  TERMINATION.............................................................................  18
     SECTION 6.01.    Termination by the Parties.............................................  18
     SECTION 6.02.    Effect of Termination..................................................  18
VII. MISCELLANEOUS...........................................................................  18
     SECTION 7.01.    Expenses, Etc..........................................................  18
     SECTION 7.02.    Survival of Agreements.................................................  18
     SECTION 7.03.    Parties in Interest....................................................  19
     SECTION 7.04.    Notices................................................................  19
     SECTION 7.05.    Entire Agreement; Assignment...........................................  20
     SECTION 7.06.    Counterparts...........................................................  20
     SECTION 7.07.    Definitions............................................................  20
     SECTION 7.08.    Headings...............................................................  21
     SECTION 7.09.    Severability...........................................................  21
     SECTION 7.10.    Governing Law..........................................................  21
</TABLE>

                                      ii
<PAGE>

                    INDEX TO EXHIBITS, SCHEDULES AND ANNEX

Exhibit                       Description
-------                       -----------

 A                            Form of Senior Subordinated Note

 B                            Form of Certificate of Amendment

 C                            Form of Amendment to Stockholders Agreement

 D                            Form of Amendment to Registration Agreement

 E                            Form of Professional Services Agreement

 F                            Form of Opinion of Dechert

Schedule                      Description
--------                      -----------

 I                            Purchasers
 2.02                         Capital Stock
 2.03                         Subsidiaries
 2.04(a)                      Authorizations, Etc.
 2.06                         Financial Statements; Undisclosed Liabilities
 2.07                         Taxes
 2.08                         Litigation
 2.10                         Consents

                                      iii
<PAGE>

          SECURITIES PURCHASE AGREEMENT dated as of November 19, 1999, among
SELECT MEDICAL CORPORATION, a Delaware corporation (the "Company"), WELSH,
CARSON, ANDERSON & STOWE VII, L.P., a Delaware limited partnership ("WCAS VII"),
WCAS CAPITAL PARTNERS III, L.P., a Delaware limited partnership ("WCAS CP III"),
THOMA CRESSEY FUND VI, L.P. ("Thoma Cressey"), GTCR FUND VI, a Delaware general
partnership ("GTCR") and the several persons named in Schedule I hereto
(collectively with WCAS VII, WCAS CP III, Thoma Cressy and GTCR, the
"Purchasers").

          WHEREAS, the Company desires to sell to the Purchasers (other than
WCAS CP III) on the Closing Date (as hereinafter defined), and such Purchasers
desire to purchase from the Company, on the terms and subject to the conditions
set forth herein, an aggregate of 16,000,000 shares of Class B Convertible
Preferred Stock (the "Class B Preferred Stock") of the Company, at a purchase
price of $3.75 per share; and

          WHEREAS, the Company desires to sell to WCAS CP III on the Closing
Date, and WCAS CP III desires to purchase from the Company, on the terms and
subject to the conditions set forth herein, (i) a Senior Subordinated Note of
the Company due November 19, 2009 substantially in the form of Exhibit A hereto
(such note and any note issued in substitution therefor being hereafter called
the "Note"), in the principal amount of $25,000,000 and (ii) an aggregate of
1,667,000 shares of Common Stock, $.01 par value per share (the "Common Stock"),
of the Company; and

          WHEREAS, the Company has agreed, as a condition to the obligation of
the Purchasers to purchase the Securities (as hereinafter defined), that,
contemporaneously with the closing of the purchase and sale of the Shares and
the Note, the Company shall (i) consummate the purchase of shares contemplated
by that certain Stock Purchase Agreement by and among NovaCare, Inc., NC
Resources, Inc. and the Company, dated as of October 1, 1999 (the "Stock
Purchase Agreement") and (ii) use the proceeds from the sale of the Securities
to pay the cash consideration to NC Resources, Inc. as contemplated by the Stock
Purchase Agreement and other expenses relating to the acquisition of the shares
pursuant to the Stock Purchase Agreement; and

          WHEREAS, the Company desires to amend its Restated Certificate of
Incorporation (the "Certificate of Incorporation") pursuant to the Certificate
of Amendment substantially in the form of Exhibit B hereto (the "Certificate of
Amendment") to (i) increase the Company's authorized shares of Common Stock from
60,000,000 shares to 75,000,000 shares and (ii) to increase the Company's
authorized shares of Preferred Stock, par value $.01 per share, from 55,000
shares to 16,055,000 shares and to designate 16,000,000 of such shares as Class
B Preferred Stock; and

          WHEREAS, the parties desire that neither the Class B Preferred Stock
nor the Common Stock (including the Springing Shares (as defined herein)) shall
entitle the holder thereof to any voting rights, except as required by law,
until all applicable waiting periods under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended, shall have expired or been terminated with
respect to the acquisition by Thoma Cressey of the Class B Preferred Stock,
being acquired by it hereunder, and the acquisition by WCAS CP III of the Common
Stock (including the Springing Shares), being acquired by it hereunder;

          NOW, THEREFORE, in consideration of the premises and the mutual
covenants herein contained, the parties hereto agree as follows:
<PAGE>

                                      I.

                        PURCHASE AND SALE OF SECURITIES

          SECTION 1.01.  Issuance and Sale of the Class B Preferred Stock.
                         ------------------------------------------------

          (a)  Subject to the terms and conditions set forth herein, on the
Closing Date (as hereinafter defined) the Company shall issue, sell and deliver
to each Purchaser (other than WCAS CP III), and each such Purchaser (other than
WCAS CP III), acting severally and not jointly, shall purchase from the Company,
the number of shares of Class B Preferred Stock set forth opposite the name of
such Purchaser on Schedule I hereto under the heading "Number of Shares of Class
B Preferred," for a purchase price of $3.75 per share. On the Closing Date, the
Company shall issue a certificate or certificates in definitive form, registered
in the name of each Purchaser (other than WCAS CP III), representing the number
of shares of Class B Preferred purchased by such Purchaser.

          (b)  As payment in full for the shares of Class B Preferred being
purchased by it hereunder, and against delivery of the certificate or
certificates therefor as aforesaid, on the Closing Date each Purchaser (other
than WCAS CP III), acting severally and not jointly, shall transfer, by wire
transfer of immediately available funds to an account designated by the Company,
the amount set forth opposite the name of such Purchaser on Schedule I under the
heading "Aggregate Class B Preferred Purchase Price."

SECTION 1.02.  Issuance and Sale of the Note and Common Stock to WCAS CP III.
               -------------------------------------------------------------

          (a)  Subject to the terms and conditions set forth herein, on the
Closing Date the Company shall issue, sell and deliver to WCAS CP III, and WCAS
CP III shall purchase from the Company, the Note and an aggregate 1,667,000
shares of Common Stock, of which 416,750 shares shall constitute the Springing
Shares (as hereinafter defined) and shall be subject to the provisions of
Section 1.04 hereof (said securities, together with the shares, being
hereinafter collectively called the "Securities"), for an aggregate purchase
price of $25,000,000. On the Closing Date, the Company shall issue the Note, a
certificate representing 1,250,250 shares of Common Stock and a certificate
representing the Springing Shares, in definitive form, in each case registered
in the name of WCAS CP III.

          (b)  On the Closing Date, as payment in full for the Note and the
shares of Common Stock being purchased by it, and against delivery of the Note
and certificates for such shares of Common Stock as aforesaid, WCAS CP III shall
pay to the Company $25,000,000 by wire transfer of immediately available funds
to an account designated by the Company.

          SECTION 1.03.  Closing Date.  The transfer, sale and delivery of the
                         ------------
Securities contemplated by Sections 1.01 and 1.02 hereof (the "Closing") shall
take place at the offices of Reboul, MacMurray, Hewitt, Maynard & Kristol, 45
Rockefeller Plaza, New York, New York, as soon as practicable after the
satisfaction or waiver of each of the conditions to the obligations of the
parties set forth in Sections 5.01 and 5.02 hereof, or at such date and time as
may be mutually agreed upon among the parties hereto (such date and time of the
Closing being herein called the "Closing Date").

          SECTION 1.04.  Springing Shares  (a) In the event the Company repays
                         ----------------
the principal amount of the Note in full, together with all interest accrued
thereon to the date of payment, on or before November 19, 2001 (the "Trigger
Event"), the Company shall deliver to WCAS CP III a written notice (the "Call
Notice") requiring WCAS CP III to transfer 416,750 shares of Common Stock (the
"Springing

                                       2
<PAGE>

Shares") to the Company and WCAS CP III shall tender, transfer, assign and
deliver the Springing Shares to the Company as a contribution to capital. Such
Springing Shares shall be transferred and assigned free and clear of all liens,
claims and encumbrances of any kind whatsoever without payment of additional
consideration. The closing for the consummation of the transaction contemplated
by the Call Notice shall take place on the date that shall not be less than 10
days nor more than 20 days after the date of delivery of such Call Notice, or
such other date as the parties may mutually determine.

          (b)  WCAS CP III agrees to hold and not to transfer any Springing
Shares until such time as it is determined hereunder that the Trigger Event has
not occurred and the transfer restrictions as described in Sections 3.01 and
4.13 herein have been satisfied.

          (c)  If the Company at any time subdivides or combines (by any stock
split, stock dividend, recapitalization or otherwise) its Common Stock, an
appropriate adjustment to the number of Springing Shares shall be made as
determined by the Company.

          (d)  WCAS CP III understands that the certificate representing the
Springing Shares shall be imprinted with the legend in substantially the
following form (in addition to the legend provided in Section 3.01 hereof'):

          "THE SECURITIES REPRESENTED BY THIS CERTIFICATE
          ARE ALSO SUBJECT TO A CALL OPTION BY THE COMPANY
          SPECIFIED IN THE SECURITIES PURCHASE AGREEMENT
          DATED NOVEMBER 19, 1999 AMONG THE ISSUER AND THE
          PURCHASERS NAMED THEREIN."

                                      II.

                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

          As a material inducement to each Purchaser to enter into this
Agreement and purchase the Securities, being purchased by such Purchaser, the
Company represents and warrants to the Purchasers as follows:

          SECTION 2.01.  Organization and Corporate Power.  The Company is a
                         --------------------------------
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware and is qualified to do business in every jurisdiction
in which the failure to so qualify might reasonably be expected to have a
material adverse effect on the financial condition, operating results, assets,
operations or business prospects of the Company and its Subsidiaries (as
hereinafter defined) taken as a whole (a "Material Adverse Effect"). The Company
has all requisite corporate power and authority and all material licenses,
permits and authorizations necessary to (i) own or lease and operate its
properties and assets, and to carry on its business as it is now being conducted
and presently proposed to be conducted, (ii) execute and deliver this Agreement,
the Note, Amendment No. 2 to the Stockholders Agreement in substantially the
form attached hereto as Exhibit C (the "Stockholders Agreement Amendment"),
Amendment No. 2 to the Registration Agreement in substantially the form attached
hereto as Exhibit D (the "Registration Agreement Amendment"), the Professional
Services Agreement in substantially the form attached hereto as Exhibit E (the
"Professional Services Agreement", and collectively with the Stockholders
Agreement Amendment and the Registration Agreement Amendment, the "Ancillary
Agreements") and carry out the transactions contemplated hereby and thereby and
(iii) issue, sell and deliver the Securities. The copies of the Company's
Certificate of Incorporation and Bylaws which have been furnished to Purchasers'
counsel

                                       3
<PAGE>

reflect all amendments made thereto at any time prior to the date of this
Agreement and are correct and complete.

          SECTION 2.02.  Capital Stock and Related Matters.
                         ---------------------------------

          (a)  As of the Closing and immediately thereafter, the authorized
capital stock of the Company shall consist of 75,000,000 shares of Common Stock,
3,000,000 shares of Class A Common Stock, par value $.01 per share ("Class A
Common Stock"), and 16,055,000 shares of Preferred Stock, $.01 par value per
share ("Preferred Stock"), of the Company, of which 55,000 shares have been
designated as Class A Preferred Stock and 16,000,000 shares have been designated
as Class B Preferred Stock and 450,000 shares of Common Stock will have been
reserved for issuance pursuant to the Company's stock option plans in effect as
of the Closing. Immediately prior to the Closing, 42,555,694 shares of Common
Stock, no shares of Class A Common Stock and 53,037.37 shares of Class A
Preferred Stock will be issued and outstanding. Except as contemplated by this
Agreement or set forth in Schedule 2.02 hereto, as of the Closing, the Company
shall not have outstanding any stock or securities convertible or exchangeable
for any shares of its capital stock or containing any profit participation
features, nor shall it have outstanding any warrants, rights or options to
subscribe for or to purchase its capital stock or any stock or securities
convertible into or exchangeable for its capital stock or any stock appreciation
rights or phantom stock plans. As of the Closing, the Company shall not be
subject to any obligation (contingent or otherwise) to repurchase or otherwise
acquire or retire any shares of its capital stock or any warrants, options or
other rights to acquire its capital stock, except as set forth in Schedule 2.02.

          (b)  There are no statutory or, to the best of the Company's
knowledge, contractual stockholders preemptive rights or rights of refusal with
respect to the issuance of Securities hereunder, except as set forth in Schedule
2.02. To the best of the Company's knowledge, the Company has not violated any
applicable federal or state securities laws in connection with the offer, sale
or issuance of any of its capital stock and, based in part on the investment
representations of each Purchaser in Article III hereof, the offer, sale and
issuance of the Securities hereunder will not require registration under the
Securities Act of 1933, as amended (the "Securities Act"), or any applicable
state securities laws. To the best of the Company's knowledge, there are no
agreements among the Company's stockholders with respect to the voting or
transfer of the Company'scapital stock or with respect to any other aspect of
the Company's affairs except for (i) the Stockholders Agreement dated February
5, 1997, as amended (the "Stockholders Agreement") among the Company, Select
Investments II ("Select II"), Select Partners L.P. ("Select LP"), WCAS VII,
Golder, Thoma, Cressey, Rauner Fund V, L.P. ("GTCR Fund V"), GTCR Associates V
and the other persons named therein; (ii) the Registration Agreement, dated
February 5, 1997, as amended, among the Company, Select II, Select LP, WCAS VII,
GTCR Fund V and the several persons named therein; (iii) the Purchase Agreement,
dated as of February 5, 1997, as amended (the "1997 Purchase Agreement"), among
the Company, GTCR Fund V, WCAS VII and the other persons named therein; (iv) the
Purchase Agreement dated December 15, 1998, among the Company, WCAS VII, WCAS CP
III, GTCR Fund VI, L.P., GTCR Associates VI, GTCR VI Executive Fund, L.P. and
the Several Persons Named in Schedule I thereto (the "1998 Purchase Agreement"),
(v) the Warrant Agreement dated as of June 30, 1998, as amended among WCAS VII,
GTCR Fund V, Rocco A. Ortenzio and Robert A. Ortenzio, and (vi) each of the two
Amended and Restated Senior Management Agreements, each dated as of May 7, 1997
(the "Senior Management Agreements"), among the Company, Select II, Select LP
and the other persons named therein, or the "Other Senior Management Agreements"
(as such term is defined in the Senior Management Agreements; the Senior
Management Agreements and such Other Senior Management Agreements being referred
to collectively herein as the "Management Agreements").

                                       4
<PAGE>

          SECTION 2.03.  Subsidiaries; Investments.
                         -------------------------

          (a)  Schedule 2.03 hereto includes a complete and accurate list of
each Subsidiary of the Company as of the Closing Date, indicating the
jurisdiction of incorporation and the nature and level of ownership in such
Subsidiary by the Company, any other Subsidiary of the Company and any other
person (for purposes of this Agreement, "person" shall mean and include an
individual, a partnership, a limited liability company, a corporation, an
association, a joint stock company, a trust, a joint venture or an
unincorporated organization). Each Subsidiary of the Company is a corporation
duly organized, validly existing and in good standing under the laws of its
jurisdiction of incorporation, and is qualified to do business, in every
jurisdiction in which the failure to so qualify might reasonably be expected to
have a Material Adverse Effect.

          (b)  Except as set forth on Schedule 2.03 hereto, as of the Closing
Date neither the Company nor any of the Subsidiaries owns of record or
beneficially, directly or indirectly, (i) any shares of outstanding capital
stock or securities convertible into capital stock of any other corporation or
(ii) any participating interest in any partnership, joint venture or other non-
corporate business enterprise.

          (c)  For purposes of this Agreement, the term "Subsidiary", when used
with respect to the Company, shall mean any corporation or other business
entity, a majority of whose outstanding securities having the right generally to
vote for the election of directors or otherwise direct the actions of such
entity is at the time owned, directly or indirectly, by the Company and/or one
or more other Subsidiaries of the Company.

          SECTION 2.04.  Authorization of Agreements, Etc.
                         --------------------------------

          (a)  Except as described in Schedule 2.04(a) hereto, each of (i) the
execution and delivery by the Company of this Agreement, the Note and the
Ancillary Agreements; (ii) the performance by the Company of its respective
obligations hereunder and thereunder; (iii) the issuance, sale and delivery by
the Company of the Shares and the Note; (iv) the amendment of the Company's
Certificate of Incorporation in accordance with the Certificate of Amendment;
and (v) the performance by the Company of the transactions contemplated hereby
and thereby have been duly authorized by all requisite corporate action and will
not (x) violate (A) any provision of law, any order of any court or other agency
of government (other than immaterial violations that can be cured without
adversely affecting the validity of the Securities or the business of the
Company as currently conducted), (B) the Certificate of Incorporation or Bylaws
of the Company or (C) any material provision of any indenture, agreement or
other instrument to which the Company or any of its properties or assets is
bound; (y) conflict with, result in a breach of or constitute (with due notice
or lapse of time or both) a default under any material provision of any such
indenture, agreement or other instrument; or (z) result in the creation or
imposition of any lien, charge, encumbrance, security interest or other similar
claim (any of the foregoing, a "Claim") in favor of any third person upon any of
the assets of the Company.

          (b)  The shares of Common Stock and Class B Preferred Stock to be
purchased pursuant to this Agreement have been duly authorized by the Company
and, when sold and paid for in accordance with this Agreement will be validly
issued, fully paid and nonassessable. The issuance, sale and delivery of such
shares of Common Stock and Class B Preferred Stock to the Purchasers hereunder
is not subject to any preemptive rights of stockholders of the Company or to any
right of first refusal or other similar right in favor of any person, other than
the preemptive rights of certain parties under the 1997 Purchase Agreement, the
1998 Purchase Agreement and the Management Agreements, as to which waivers have
been obtained.

                                       5
<PAGE>

          SECTION 2.05.  Validity. This Agreement has been duly executed and
                         --------
delivered by the Company and constitutes the legal, valid and binding obligation
of the Company, enforceable against the Company in accordance with its terms.
The Note and the Ancillary Agreements, when executed and delivered by the
Company as provided in this Agreement, will constitute the legal, valid and
binding obligations of the Company, enforceable against the Company in
accordance with their respective terms.

          SECTION 2.06.  Financial Statements; Undisclosed Liabilities.
                         ---------------------------------------------

          (a)  Attached hereto as Part I of Schedule 2.06 are the consolidated
balance sheet of the Company as of March 31, 1999, and the related consolidated
statements of operations, cash flows and stockholders' equity for the year then
ended, including the notes thereto (collectively, the "Financial Statements"),
audited and certified by Ernst & Young LLP, the independent auditors retained by
the Company. The Financial Statements fairly present the consolidated financial
position and stockholders' equity of the Company and its Subsidiaries as of the
dates specified therein and the consolidated results of operations of the
Company and its Subsidiaries for the period then ended in conformity with
generally accepted accounting principles applied on a consistent basis.

          (b)  Except as set forth in Part II of Schedule 2.06 hereto, as of the
Closing Date neither the Company nor any of its Subsidiaries has any material
obligation or liability (whether accrued, absolute, contingent, unliquidated or
otherwise, whether or not known to the Company or any Subsidiary, whether due or
to become due and regardless of when asserted) other than: (i) liabilities set
forth or reflected on the balance sheet included in the Financial Statements,
(ii) liabilities and obligations which have arisen after the date of such
balance sheet in the ordinary course of business (none of which is a liability
arising from breach of contract, breach of warranty, tort, infringement, claim
or lawsuit) and (iii) liabilities and obligations which have been disclosed and
approved by the representatives to the Company's Board of Directors designated
by WCAS VII and GTCR Fund V.

          SECTION 2.07.  Tax Matters. The Company has filed all tax returns
                         -----------
which it is required to file under applicable laws and regulations; all such
returns are complete and correct in all material respects; the Company has paid
all taxes due and owing by it and has withheld and paid over all taxes which it
is obligated to withhold from amounts paid or owing to any employee,
stockholder, creditor or other third party; the Company has not waived any
statute of limitations with respect to taxes or, except as set forth on Schedule
2.07 hereto, agreed to any extension of time with respect to a tax assessment or
deficiency; the assessment of any additional taxes for periods for which returns
have been filed is not expected; no foreign, federal, state or local tax audits
are pending or being conducted with respect to the Company, no information
related to tax matters has been requested by any foreign, federal, state or
local taxing authority and no notice indicating an intent to open an audit or
other review has been received by the Company from any foreign, federal, state
or local taxing authority; and there are no unresolved questions or claims
concerning the Company's tax liability. The Company has not made an election
under (S)341(f) of the Internal Revenue Code of 1986, as amended (the "IRC").

          SECTION 2.08.  Litigation, Etc. Except as set forth on Schedule 2.08
                         ---------------
hereto, there are no actions, suits, proceedings, orders, investigations or
claims pending or, to the best of the Company's knowledge, threatened against or
affecting the Company or any of its Subsidiaries (or to the best of the
Company's knowledge, pending or threatened against or affecting any of the
officers, directors or employees of the Company or any of its Subsidiaries with
respect to their businesses or proposed business activities) at law or in
equity, or before or by any governmental department, commission, board, bureau,
agency or instrumentality (including, without limitation, any action, suit,
proceeding, or investigation with respect to the transactions contemplated by
this Agreement) which could have a Material Adverse

                                       6
<PAGE>

Effect; neither the Company nor any of its Subsidiaries is subject to any
arbitration proceedings under collective bargaining agreements or otherwise or,
to the best of the Company's knowledge, any governmental investigations or
inquiries; and, to the best of the Company's knowledge, there is no basis for
any of the foregoing. Neither the Company nor any of its Subsidiaries is subject
to any judgment, order or decree of any court or other governmental agency. The
Company has not received any opinion or memorandum or legal advice from legal
counsel to the effect that it or any of its Subsidiaries is exposed, from a
legal standpoint, to any liability or disadvantage which may be material to its
business.

          SECTION 2.09.  Brokerage. There are no claims for brokerage
                         ---------
commissions, finders, fees or similar compensation in connection with the
transactions contemplated by this Agreement based on any arrangement or
agreement binding upon the Company. The Company shall pay, and hold the
Purchasers harmless against, any liability, loss or expense (including, without
limitation, attorneys' fees and out-of-pocket expenses) arising in connection
with any such claim.

          SECTION 2.10.  Consents, Etc. Except as set forth in Schedule 2.10
                         -------------
hereto, no permit, consent, approval or authorization of, or declaration to or
filing with, any third party or governmental authority is required in connection
with the execution, delivery and performance by the Company of this Agreement
and the Ancillary Agreements, the issuance, sale and delivery of the Securities.

          SECTION 2.11.  ERISA. The Company does not maintain or have any
                         -----
obligation to contribute to or any other liability with respect to or under
(including but not limited to current or potential withdrawal liability), nor
has it ever maintained or had any obligation to contribute to or any other
liability with respect to or under, (i) any plan or arrangement whether or not
terminated, which provides medical, health, life insurance or other welfare type
benefits for current or future retired or terminated employees (except for
limited continued medical coverage required to be provided under Section 4980B
of the IRC or as required under applicable state law), (ii) any "multiemployer
plan" (as defined in Section 3(37) of the Employee Retirement Income Security
Act of 1974, as amended ("ERISA"), (iii) any employee plan which is a tax-
qualified "defined benefit plan" (as defined in Section 3(35) of ERISA), whether
or not terminated, (iv) any employee plan which is a tax-qualified "defined
contribution plan" (as defined in Section 3(34) of ERISA), whether or not
terminated, or (v) any other plan or arrangement (other than any such plan or
arrangement approved by the representatives designated by each of WCAS VII and
GTCR on the Board of Directors in accordance with the terms of the Stockholders
Agreement) providing benefits to current or former employees, including any
bonus plan, plan for deferred compensation, employee health or other welfare
benefit plan or other arrangement, whether or not terminated. For purposes of
this Section 2.10, the term "Company" includes all organizations under common
control with the Company pursuant to Section 4 14(b) or (c) of the IRC.

          SECTION 2.12.  Compliance with Laws. Neither the Company nor any of
                         --------------------
its Subsidiaries has violated any law or any governmental regulation or
requirement which violation would reasonably be expected to have a Material
Adverse Effect, and the Company has not received notice of any such violation.
Neither the Company nor any of its Subsidiaries is subject to any clean up
liability that would reasonably be expected to have a Material Adverse Effect,
and the Company has no reason to believe it may become subject to any clean up
liability that would reasonably be expected to have a Material Adverse Effect,
under any federal, state or local environmental law, rule or regulation.

          SECTION 2.13.  Disclosure.
                         ----------

          (a)  Neither this Agreement nor any of the schedules, attachments,
written statements, documents, certificates or other items prepared or supplied
to the Purchasers by or on behalf of the

                                       7
<PAGE>

Company with respect to the transactions contemplated hereby (collectively, the
"Materials") contain any untrue statement of material fact or omit a material
fact necessary to make each statement contained herein or therein not
misleading. There is no fact which the Company has not disclosed to the
Purchasers in writing and of which any of its officers, directors or executive
employees is aware and which has had or might reasonably be anticipated to have
a material adverse effect upon the existing or expected financial condition,
operating results, assets, customer or supplier relations, employee relations or
business prospects of the Company and its Subsidiaries taken as a whole.

          (b)  Except as and to the extent specifically set forth in this
Agreement (including, with respect to any Materials, the representations set
forth in paragraph (a) hereof), neither the Company nor any Subsidiary makes any
representation or warranty of any kind or nature with respect to the matters
contemplated hereby.

                                     III.

               REPRESENTATIONS AND WARRANTIES OF THE PURCHASERS

          Each Purchaser, severally and not jointly, represents and warrants to
the Company as follows:

          SECTION 3.01.  Investment.  Such Purchaser is acquiring the Securities
                         ----------
being purchased or acquired by such Purchaser hereunder for such Purchaser's own
account with the present intention of holding such Securities for purposes of
investment, and that such Purchaser has no intention of selling such Securities
in a public distribution in violation of the federal securities laws or any
applicable state securities laws; provided that nothing contained herein shall
prevent any Purchaser and subsequent holders of Securities from transferring
such Securities in a transaction that is the subject of either (i) an effective
registration statement under the Securities Act and any applicable state
securities laws, or (ii) an opinion of counsel to the effect that such
registration is not required (which opinion and counsel shall be reasonably
satisfactory to the Company). Such Purchaser understands that each certificate
representing the Securities shall be imprinted with a legend in substantially
the following form:

          "THE SECURITIES REPRESENTED BY THIS CERTIFICATE
          WERE ORIGINALLY ISSUED ON [INSERT DATE OF ORIGINAL
          ISSUANCE], AND HAVE NOT BEEN REGISTERED UNDER THE
          SECURITIES ACT OF 1933, AS AMENDED. THE TRANSFER
          OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE
          IS SUBJECT TO THE CONDITIONS SPECIFIED IN THE
          SECURITIES PURCHASE AGREEMENT DATED AS OF NOVEMBER
          19, 1999 AMONG THE ISSUER AND THE PURCHASERS NAMED
          THEREIN, AND THE ISSUER RESERVES THE RIGHT TO
          REFUSE THE TRANSFER OF SUCH SECURITIES UNTIL SUCH
          CONDITIONS HAVE BEEN FULFILLED WITH RESPECT TO
          SUCH TRANSFER. ANY TRANSFER WITHOUT SATISFACTION
          OF SUCH CONDITIONS IS NULL AND VOID. A COPY OF
          SUCH CONDITIONS WILL BE FURNISHED BY THE ISSUER
          TO

                                       8
<PAGE>

          THE HOLDER THEREOF UPON WRITTEN REQUEST WITHOUT
          CHARGE."

          SECTION 3.02.  Brokerage.  Except for payments contemplated by the
                         ---------
Professional Services Agreement, there are no claims for brokerage commissions,
finders fees or similar compensation in connection with the transactions
contemplated by this Agreement based on any arrangement or agreement binding
upon such Purchaser. Such Purchaser shall pay, and hold the Company harmless
against, any liability, loss or expenses (including, without limitation,
attorneys' fees and out-of pocket expenses) arising in connection with any such
claim.

                                      IV.

                                   COVENANTS

          SECTION 4.01.  Financial Statements and Other Information. The
                         ------------------------------------------
Company shall deliver to each Purchaser, so long as such Purchaser shall be a
holder of any Shares:

          (i)   as soon as available but in any event within 45 days after the
     end of each quarterly accounting period in each fiscal year, unaudited
     consolidating and consolidated statements of income and cash flows of the
     Company and its Subsidiaries for such quarterly period and for the period
     from the beginning of the fiscal year to the end of such quarter, and
     consolidating and consolidated balance sheets of the Company and its
     Subsidiaries as of the end of such quarterly period, all prepared in
     accordance with generally accepted accounting principles, consistently
     applied, subject to the absence of footnote disclosures and to normal year-
     end adjustments;

          (ii)  accompanying the financial statements referred to in paragraph
     (i), an Officer's Certificate (as hereinafter defined) stating that neither
     the Company nor any of its Subsidiaries is in default under any of its
     other material agreements or, if any such default exists, specifying the
     nature and period of existence thereof and what actions the Company and its
     Subsidiaries have taken and propose to take with respect thereto;

          (iii) within 120 days after the end of the each fiscal year,
     consolidating and consolidated statements of income and cash flows of the
     Company and its Subsidiaries for such fiscal year, and consolidating and
     consolidated balance sheets of the Company and its Subsidiaries as of the
     end of such fiscal year, setting forth in each case comparisons to the
     annual budget and to the preceding fiscal year, all prepared in accordance
     with generally accepted accounting principles, consistently applied, and
     accompanied by (a) with respect to the consolidated portions of such
     statements (except with respect to budget data), an opinion containing no
     exceptions or qualifications (except for qualifications regarding specified
     contingent liabilities) of an independent accounting firm of recognized
     national standing acceptable to WCAS VII and GTCR, and (b) a copy of such
     firm's annual management letter to the Company's board of directors;

          (iv)  promptly upon receipt thereof, any additional reports,
     management letters or other detailed information concerning significant
     aspects of the Company's operations or financial affairs given to the
     Company by its independent accountants (and not otherwise contained in
     other materials provided hereunder);

                                       9
<PAGE>

          (v)   at the beginning of each fiscal year, an annual budget prepared
     on a monthly basis for the Company and its Subsidiaries for such fiscal
     year (displaying anticipated statements of income and cash flows), and
     promptly upon preparation thereof any other significant budgets prepared by
     the Company and any revisions of such annual or other budgets, and within
     30 days after any monthly period in which there is a material adverse
     deviation from the annual budget, an Officer's Certificate explaining the
     deviation and what actions the Company has taken and proposes to take with
     respect thereto;

          (vi)  promptly (but in any event within five business days) after the
     discovery or receipt of notice of any default under any material agreement
     to which it or any of its Subsidiaries is a party or any other event or
     circumstance affecting the Company or any Subsidiary which is reasonably
     likely to have a material adverse effect on the financial condition,
     operating results, assets, operations or business prospects of the Company
     or any Subsidiary (including the filing of any material litigation against
     the Company or any Subsidiary or the existence of any material dispute with
     any person which involves a reasonable likelihood of such litigation being
     commenced), an Officer's Certificate specifying the nature and period of
     existence thereof and what actions the Company and its Subsidiaries have
     taken and propose to take with respect thereto; and

          (vii) with reasonable promptness, such other information and financial
     data concerning the Company and its Subsidiaries as any person entitled to
     receive information under this Section 4.01 may reasonably request.

Each of the financial statements referred to in paragraph (i) and (iii) shall be
true and correct in all material respects as of the dates and for the period
stated therein, subject in the case of the unaudited financial statements to
changes resulting from normal year-end audit adjustments (none of which would,
alone or in the aggregate, be materially adverse to the financial condition,
operating results, assets, operations or business prospects of the Company and
its Subsidiaries taken as a whole).

          SECTION 4.02.  Inspection of Property. The Company shall permit any
                         ----------------------
representatives designated by WCAS VII or GTCR, as the case may be, so long as
such Purchaser holds at least 25% of the Securities purchased by it on the date
hereof, upon reasonable notice and during normal business hours and such other
times as any such holder may reasonably request, to (i) visit and inspect any of
the properties of the Company and its Subsidiaries, (ii) examine the corporate
and financial records of the Company and its Subsidiaries and make copies
thereof or extracts therefrom and (iii) discuss the affairs, finances and
accounts of any such corporation with the directors, officers, key employees and
independent accountants of the Company and its Subsidiaries; provided that the
                                                             --------
Company shall have the right to have its chief financial officer present at any
meetings with the Company's independent accountants.

          SECTION 4.03.  Restrictions. The Company shall not, without the prior
                         ------------
written consent of either (1) the holders of a majority of the shares of Class B
Preferred Stock held by WCAS VII or (2) the holders of a majority of the shares
of Class B Preferred Stock held by GTCR; provided that no action which would
result in either WCAS VII or GTCR being affected differently in any manner than
the other, may be taken unless such action has the prior written consent of the
holders of a majority of the shares of Class B Preferred Stock held by WCAS VII
and the holders of a majority of the shares of Class B Preferred Stock held by
GTCR; it being understood that so long as there are two representatives
designated by each of WCAS VII and GTCR on the Board of Directors in accordance
with the terms of the Stockholders Agreement, then (a) the consent of the
holders of a majority of the shares of Class B

                                       10
<PAGE>

Preferred Stock held by WCAS VII shall be deemed to have been given when the
unanimous approval of the Directors designated by WCAS VII has been obtained, as
evidenced by written minutes or board resolutions and (b) the consent of the
holders of a majority of the shares of Class B Preferred Stock held by GTCR
shall be deemed to have been given when the unanimous approval of the Directors
designated by GTCR has been obtained, as evidenced by written minutes or board
resolutions;

          (i)   directly or indirectly declare or pay any dividends or make any
     distributions upon any of its equity securities, other than payments of
     dividends on, or redemption payments in respect of, the Class A Preferred
     Stock and the Class B Preferred Stock pursuant to the Certificate of
     Incorporation;

          (ii)  except (w) for the exercise of the call with respect to the
     Springing Shares provided in Section 1.04, (x) for redemptions or purchases
     of the Class A Preferred Stock or Class B Preferred Stock pursuant to the
     Certificate of Incorporation of the Company, (y) for repurchases,
     redemptions or acquisitions of equity securities pursuant to agreements in
     effect as of the date hereof with the Company's employees or directors in
     effect on the date hereof and (z) in connection with the exercise by the
     holder of any minority interest in a Subsidiary of its rights under a
     "put," repurchase or similar arrangement with the Company or any Subsidiary
     in effect as of the date hereof, directly or indirectly redeem, purchase or
     otherwise acquire, or permit any Subsidiary to redeem, purchase or
     otherwise acquire, any of the Company's equity securities (including,
     without limitation, warrants, options and other rights to acquire equity
     securities);

          (iii) except for the issuance of equity securities (x) under any stock
     option plan or other benefit plan or arrangement approved by the Board of
     Directors of the Company or (y) upon the exercise of preemptive rights or
     warrants authorized as of the date hereof, authorize, issue, sell or enter
     into any agreement providing for the issuance (contingent or otherwise), or
     permit any Subsidiary to authorize, issue, sell or enter into any agreement
     providing for the issuance (contingent or otherwise) of, (a) any notes or
     debt securities containing equity features (including, without limitation,
     any notes or debt securities convertible into or exchangeable for equity
     securities, issued in connection with the issuance of equity securities or
     containing profit participation features) or (b) any equity securities (or
     any securities convertible into or exchangeable for any equity securities)
     or rights to acquire any equity securities, other than the issuance of
     equity securities by a Subsidiary to the Company or another Subsidiary;

          (iv)  merge or consolidate with any person or permit any Subsidiary to
     merge or consolidate with any person (other than a wholly owned
     Subsidiary);

          (v)   sell, lease or otherwise dispose of, or permit any Subsidiary to
     sell, lease or otherwise dispose of, more than 5% of the consolidated
     assets of the Company and its Subsidiaries (computed on the basis of book
     value, determined in accordance with generally accepted accounting
     principles consistently applied, or fair market value, determined by the
     Board of Directors in its reasonable good faith judgment) in any
     transaction or series of related transactions (other than sales of
     inventory in the ordinary course of business);

          (vi)  liquidate, dissolve or effect a recapitalization or
     reorganization in any form of transaction (including, without limitation,
     any reorganization in partnership form);

                                       11
<PAGE>

          (vii)  acquire, or permit any Subsidiary to acquire, any interest in
     any business (whether by a purchase of assets, purchase of stock, merger
     otherwise), or enter into any joint venture;

          (viii) enter into, or permit any Subsidiary to enter into, the
     ownership, active management or operation of any business other than the
     ownership and operation of businesses engaged as rehabilitation hospitals
     or specialty. long-term hospitals or engaged in rehabilitation services or
     contract therapy services or related businesses;

          (ix)   enter into, or permit any Subsidiary to enter into, any
     transaction with any of its or any Subsidiary's officers, directors,
     employees or Affiliates or any individual related by blood, marriage or
     adoption to any such person (a "Relative") or any entity in which any such
     person or individual owns a beneficial interest (a "Related Entity"),
     except for normal employment arrangements and benefit programs on
     reasonable terms and except as otherwise expressly contemplated by this
     Agreement and the Ancillary Agreements; or

          (x)    create, incur, assume or suffer to exist, or permit any
     Subsidiary to create, incur, assume or suffer to exist, indebtedness
     exceeding the amounts approved therefor by the Board in the annual budget.

          SECTION 4.04.  Affirmative Covenants. So long as the Purchasers hold
                         ---------------------
any Shares, the Company shall, and shall cause each Subsidiary to:

          (i)    comply with all applicable laws, rules and regulations of all
     governmental authorities, the violation of which would reasonably be
     expected to have a Material Adverse Effect, and pay and discharge when
     payable all taxes, assessments and governmental charges (except to the
     extent the same are being contested in good faith and adequate reserves
     therefor have been established);

          (ii)   enter into and maintain appropriate nondisclosure and
     noncompete agreements with its key employees; and

          (iii)  cause any Other Senior Management Agreement entered into by the
     Company after the date hereof which provides for the sale of Common Stock
     to or employment of certain members of senior management (the "Other
     Executives"), to be in form and substance reasonably satisfactory to each
     of the Purchasers.

          SECTION 4.05.  Current Public Information. At all times after the
                         --------------------------
Company has filed a registration statement with the Securities and Exchange
Commission pursuant to the requirements of either the Securities Act or the
Securities Exchange Act of 1934 as amended (the "Securities Exchange Act"), the
Company shall file all reports required to be filed by it under the Securities
Act and the Securities Exchange Act and the rules and regulations adopted by the
Securities and Exchange Commission thereunder and shall take such further action
as any holder or holders of the Securities may reasonably request, all to the
extent required to enable such holders to sell the Securities pursuant to (i)
Rule 144 adopted by the Securities and Exchange Commission under the Securities
Act (as such rule may be amended from time to time) or any similar rule or
regulation hereafter adopted by the Securities and Exchange Commission or (ii) a
registration statement on Form S-2 or S-3 or any similar registration form
hereafter adopted by the Securities and Exchange Commission. Upon request, the
Company shall

                                       12
<PAGE>

deliver to any holder of the Securities a written statement as to whether it has
complied with such requirements.

          SECTION 4.06.  Amendment of Other Agreements. The Company shall not
                         -----------------------------
amend, modify or waive any provision of any Management Agreement without the
prior written consent of the holders of a majority of the Shares, and the
Company shall enforce the provisions of the Management Agreements and shall
exercise all of its rights and remedies thereunder (including, without
limitation, any repurchase options and first refusal rights) unless it is
otherwise directed by the holders of a majority of the Shares.

          SECTION 4.07.  Limited Preemptive Rights.
                         -------------------------

          (i)   Except for the issuance of shares of Common Stock (a) pursuant
     to the Other Senior Management Agreements, (b) as consideration for
     acquisitions, (c) upon the exercise of stock options granted pursuant to a
     stock option or other benefit plan or arrangement approved by the Board of
     Directors of the Company, (d) upon the exercise of warrants approved by the
     Board of Directors of the Company or (e) pursuant to a public offering
     registered under the Securities Act, if the Company at any time after the
     Closing authorizes the issuance or sale of any shares of Common Stock or
     any securities containing options or rights to acquire any shares of Common
     Stock (other than as a dividend on the outstanding Common Stock), the
     Company shall first offer to sell to each holder of Shares (without
     duplication) a portion of such stock or securities equal to the quotient
     determined by dividing (1) the number of shares of Common Stock held by
     such holder by (2) the total number of shares of Common Stock outstanding
     on a fully diluted basis immediately prior to such issuance; provided,
                                                                  --------
     however, that if two or more securities shall be proposed to be sold as a
     -------
     "unit" in such issuance, any such election must relate to such unit of
     securities. Each holder of Shares shall be entitled to purchase all or any
     portion of such stock or securities at the most favorable price and on the
     most favorable terms as such stock or securities are to be offered to any
     other persons.

          (ii)  In order to exercise its purchase rights hereunder a holder of
     Shares must within 15 days after receipt of written notice from the Company
     describing in reasonable detail the stock or securities being offered, the
     purchase price thereof, the payment terms and such holder's percentage
     allotment deliver a written notice to the Company describing its election
     hereunder. If all of the stock and securities offered to the holders of
     Shares is not fully subscribed by such holders, the remaining stock and
     securities shall be reoffered by the Company to the holders purchasing
     their full allotment upon the terms set forth in this paragraph, except
     that such holders must exercise their purchase rights within five days
     after receipt of such reoffer.

          (iii) Upon the expiration of the offering periods described above, the
     Company shall be entitled to sell such stock or securities which the
     holders of Shares have not elected to purchase during the 90 days following
     such expiration on terms and conditions no more favorable to the purchasers
     thereof than those offered to such holders. Any stock or securities offered
     or sold by the Company after such 90-day period must be reoffered to the
     holders of Shares pursuant to the terms of this paragraph.

          (iv)  Nothing contained in this Section 4.07 shall be deemed to amend,
     modify or limit in any way the restrictions on the issuance of shares of
     stock set forth in Section 4.03 hereof or elsewhere in this Agreement, in
     the Stockholders Agreement or in any other agreement to which the Company
     is bound.

                                      13

<PAGE>

          SECTION 4.08.  Public Disclosures. The Company shall not, nor shall
                         ------------------
it permit any Subsidiary to, disclose any Purchaser's name or identity as an
investor in the Company in any press release or other public announcement or in
any document or material filed with any governmental entity, without the prior
written consent of such Purchaser, unless such disclosure is required by
applicable law or governmental regulations or by order of a court of competent
jurisdiction, in which case prior to making such disclosure the Company shall
give written notice to such Purchaser describing in reasonable detail the
proposed content of such disclosure and shall permit such Purchaser to review
and comment upon the form and substance of such disclosure.

          SECTION 4.09.  Unrelated Business Taxable Income. The Company shall
                         ---------------------------------
not engage in any action which is reasonably likely to cause any Purchaser or
any of its limited partners which are exempt from income taxation under Section
501(a) of the IRC and, if applicable, any pension plan that any such trust may
be a part of, to recognize unrelated business taxable income as defined in
Section 512 and Section 514 of the IRC.

          SECTION 4.10.  Hart-Scott-Rodino Compliance. In connection with any
                         ----------------------------
transaction in which the Company is involved which is required to be reported
under the HSR Act, the Company shall prepare and file all documents with the
Federal Trade Commission ("FTC") and the United States Department of Justice
("DOJ") which may be required to comply with the HSR Act, and shall promptly
furnish all materials thereafter requested by any of the regulatory agencies
having jurisdiction over such filings, in connection with the transactions
contemplated thereby. The Company shall take all reasonable actions and shall
file and use reasonable best efforts to have declared effective or approved all
documents and notifications with any governmental or regulatory bodies, as may
be necessary or may reasonably be requested under federal antitrust laws for the
consummation of the subject transaction. Without limiting the generality of the
foregoing, the Company, Thoma Cressey and WCAS CP III, promptly after the
execution and delivery of this Agreement, shall prepare and file all documents
with the FTC and the DOJ to comply with the HSR Act with respect to the purchase
of the Class B Preferred Stock by Thoma Cressey and the purchase of the Common
Stock (including the Springing Shares) by WCAS CP III. It is understood that the
Class B Preferred Stock and the Common Stock (including the Springing Shares)
acquired hereunder by Thoma Cressey and WCAS CP III, respectively, shall not
entitle the holder thereof to any voting rights, in the case of Thomas Cressey,
except as required by law and until all applicable waiting periods under the HSR
Act have expired, and, with respect to WCAS CP III, except in the event the
Trigger Event has not occurred.

          SECTION 4.11.  Conduct of the Company's Business. The Company
                         ---------------------------------
covenants and agrees that, between the date hereof and the Closing Date, unless
WCAS VII and GTCR shall otherwise consent in writing, the Company shall not (i)
issue, sell, pledge or dispose of, or agree to issue, sell, pledge or dispose
of, any shares of, or securities convertible or exchangeable for, or any
options, warrants or rights of any kind to acquire any shares of, its capital
stock of any class, except as provided herein; (ii) acquire (by merger,
consolidation or acquisition of stock or assets) any corporation, partnership or
other business organization or division thereof (except an existing wholly-owned
subsidiary) or any material amount of assets; (iii) incur or guarantee any
indebtedness for borrowed money or refinance any such indebtedness or issue or
sell any debt securities; (iv) enter into or modify any material contract,
lease, agreement or commitment, or permit or perform any act that would cause a
material breach of any such contract, lease, agreement or commitment; (v) make
any loans, advances or capital contributions to or investments in, any other
person; or (vi) violate or fail to perform in any material respect any
obligation imposed upon the Company or any of its subsidiaries by any applicable
laws, orders, decrees, ordinances, government rules or regulations.

                                       14
<PAGE>

          SECTION 4.12.  Further Assurances. Subject to the terms and conditions
                         ------------------
herein provided, each of the parties hereto agrees to use its reasonable best
efforts to take, or cause to be taken, all action and to do, or cause to be
done, all things necessary, proper or advisable to consummate and make effective
as promptly as practicable the transactions contemplated by this Agreement, the
Ancillary Agreements and the Stock Purchase Agreement, including, without
limitation, using all reasonable efforts to obtain all necessary waivers,
consents and approvals and to effect all necessary registrations and filings.

          SECTION 4.13.  Transfer of Restricted Securities.
                         ---------------------------------

          (a)  Restricted Securities are transferable only pursuant to (i)
public offerings registered under the Securities Act, (ii) Rule 144 or Rule 144A
of the Securities and Exchange Commission (or any similar rule or rules then in
force) if such rule or rules are available and (iii) subject to the conditions
specified in subparagraph (b) below, any other legally available means of
transfer.

          (b)  In connection with the transfer of any Restricted Securities
(other than a transfer described in Section 4.13(a)(i) or (ii) above), the
holder thereof shall deliver written notice to the Company describing in
reasonable detail the transfer or proposed transfer, together with an opinion of
Reboul, MacMurray, Hewitt, Maynard & Kristol or Kirkland & Ellis or other
counsel which (to the Company's reasonable satisfaction) is knowledgeable in
securities law matters to the effect that such transfer of Restricted Securities
may be effected without registration of such Restricted Securities under the
Securities Act. In addition, if the holder of the Restricted Securities delivers
to the Company an opinion of Reboul, MacMurray, Hewitt, Maynard & Kristol or
Kirkland & Ellis or such other counsel that no subsequent transfer of such
Restricted Securities shall require registration under the Securities Act, the
Company shall promptly upon such contemplated transfer deliver new certificates
for such Restricted Securities which do not bear the Securities Act legend set
forth in Article III. If the Company is not required to deliver new certificates
for such Restricted Securities not bearing such legend, the holder thereof shall
not transfer the same until the prospective transferee has confirmed to the
Company in writing its agreement to be bound by the conditions contained in this
paragraph and Article III.

          (c)  Upon the request of any Purchaser, the Company shall promptly
supply to such Purchaser or its prospective transferees all information
regarding the Company required to be delivered in connection with a transfer
pursuant to Rule 144A of the Securities and Exchange Commission.

          SECTION 4.14.  Waiver of Preemptive Rights With Respect to the Sale
                         ----------------------------------------------------
of the Securities. Each Purchaser who holds any preemptive rights (whether
-----------------
arising under a contract or agreement with the Company or otherwise) to acquire
any shares of capital stock or securities convertible into capital stock of the
Company hereby waives any and all such rights as the same may apply to the
issuance and sale of any of the Securities being issued and sold by the Company
under this Agreement.

          SECTION 4.15.  Guarantees. Reference is made to those certain
                         ----------
Guarantees dated November 19, 1999 (the "Guarantees") made by certain
stockholders of the Company (the "Guarantors") in favor of the Lenders (as
defined in the Guarantees). In the event the Guarantors are required by the
Lenders to make an investment in the Company in satisfaction of the obligations
set forth in Section 2(c) of the Guarantees of such Guarantors in favor of the
Lenders, the Company agrees that such investment shall be made, if elected by
such Guarantors, in the form of convertible subordinated indebtedness that is
convertible into Common Stock at the price of $1.00 per share with such other
terms as the Company and such Guarantors shall agree.

                                       15
<PAGE>

                                      V.

                             CONDITIONS PRECEDENT

          SECTION 5.01.  Conditions Precedent to the Obligations of the
                         ----------------------------------------------
Purchasers on the Closing Date. The obligations of each Purchaser hereunder are,
------------------------------
at its option, subject to the satisfaction, on or before the Closing Date, of
the following conditions:

          (a)  Representations and Warranties to Be True and Correct. The
               -----------------------------------------------------
representations and warranties of the Company contained in this Agreement shall
be true and correct in all material respects on the Closing Date, with the same
force and effect as though such representations and warranties had been made on
and as of such date, and the Company shall have so certified to the Purchasers
in writing.

          (b)  Performance. The Company shall have performed and complied in
               -----------
all material respects with all agreements and covenants contained herein
required to be performed or complied with by it prior to or on the Closing Date,
and the Company shall have so certified to the Purchasers in writing.

          (c)  Amendment of Certificate of Incorporation. The Company's Restated
               -----------------------------------------
Certificate of Incorporation shall have been amended as set forth in the
Certificate of Amendment, shall be in full force and effect under the laws of
Delaware as of the Closing as so amended and shall not have been further amended
or modified.

          (d)  Stock Purchase Agreement. The Company shall have (i) consummated
               ------------------------
the purchase of the shares contemplated by the Stock Purchase Agreement, at an
aggregate price not to exceed $200,000,000, and (ii) all other transactions
contemplated by the Stock Purchase Agreement to be consummated simultaneously
with the Closing hereunder shall have been consummated to the satisfaction of
each Purchaser in its sole discretion.

          (e)  Use of Proceeds. The Company shall have used the proceeds from
               ---------------
the sale of the Securities hereunder to pay the cash consideration to NC
Resources, Inc., as contemplated by the Stock Purchase Agreement and other
expenses relating to the acquisition of the shares pursuant therein and, with
any remaining proceeds, for general corporate purposes, in each case
satisfactory to each Purchaser in its sole discretion.

          (f)  Ancillary Agreements. Each of the Ancillary Agreements shall have
               --------------------
been executed and delivered by each party thereto, and the same shall be in full
force and effect.

          (g)  Consents. The Company shall have obtained all waivers and
               --------
consents and made all filings listed on Schedule 2.10 hereof.

          (h)  Opinion of Counsel. The Purchasers shall have received from
               ------------------
Dechert, counsel for the Company, an opinion dated the Closing Date,
substantially in the form of Exhibit F attached hereto.

          (i)  Legal Proceedings. No preliminary or permanent injunction or
               -----------------
other order, decree or ruling issued by any court of competent jurisdiction nor
any statute, rule, regulation or order entered, promulgated or enacted by any
governmental, regulatory or administrative agency or authority, or national
securities exchange shall be in effect that would prevent the consummation of
the transactions contemplated by this Agreement.

                                       16
<PAGE>

          (j)  Supporting Documents. On or prior to the Closing Date the
               --------------------
Purchasers and their counsel shall have received copies of the following
supporting documents:

          (i)  copies of (1) the Certificate of Incorporation of the Company,
     including all amendments thereto, certified as of a recent date by the
     Secretary of State of the jurisdiction of incorporation of such corporation
     and (2) a certificate of such Secretary, dated as of a recent date, as to
     the due incorporation and good standing of such corporation, and listing
     all documents relating to the Company on file with such official; and

          (ii) a certificate of the Secretary or an Assistant Secretary of the
     Company, dated the Closing Date and certifying (1) that attached thereto is
     a true and complete copy of the By-laws of the Company as in effect on the
     date of such certification and at all times since February 5, 1997; (2)
     that attached thereto is a true and complete copy of resolutions adopted by
     the Board of Directors of the Company authorizing the execution, delivery
     and performance of this Agreement, the Note and the Ancillary Agreements,
     the issuance, sale and delivery of the Securities and the amendment of the
     Company's Certificate of Incorporation pursuant to the Certificate of
     Amendment, and that all such resolutions are still in full force and effect
     and are all the resolutions adopted in connection with the transactions
     contemplated by this Agreement; (3) that the Certificate of Incorporation
     of the Company has not been amended since the date of the last amendment
     referred to in the certificate delivered pursuant to clause (i)(2) above;
     and (4) as to the incumbency and specimen signature of each officer of the
     Company executing this Agreement, the Ancillary Agreements, the Note, the
     stock certificates representing the shares of Common Stock issued hereunder
     and any certificate or instrument furnished pursuant hereto, and a
     certification by another officer of the Company as to the incumbency and
     signature of the officer signing the certificate referred to in this
     paragraph (ii).

          All such documents shall be satisfactory in form and substance to the
Purchasers and their counsel.

          (k)  All Proceedings to Be Satisfactory. All corporate and other
               ----------------------------------
     proceedings to be taken by the Company and all waivers and consents to be
     obtained by the Company in connection with the transactions contemplated
     hereby shall have been taken or obtained by the Company and all documents
     incident thereto shall be satisfactory in form and substance to the
     Purchasers and their counsel.

          SECTION 5.02.  Conditions Precedent to the Obligations of the Company
                         ------------------------------------------------------
on the Closing Date. The obligations of the Company hereunder are, at its
-------------------
option, subject to the satisfaction, on or before the Closing Date, of the
following conditions:

          (a)  Representations and Warranties to Be True and Correct. The
               -----------------------------------------------------
representations and warranties of the Purchasers contained in this Agreement
shall be true and correct in all material respects on the Closing Date, with the
same effect as though such representations and warranties had been made on and
as of such date.

          (b)  Performance. The Purchasers shall have performed and complied in
               -----------
all material respects with all agreements and covenants contained herein
required to be performed or complied with by them prior to or on the Closing
Date.

          (c)  Ancillary Agreements. Each of the Ancillary Agreements shall
               --------------------
have been executed and delivered by each party thereto, and the same shall be in
full force and effect.

                                       17
<PAGE>

          (d)  Legal Proceedings. No preliminary or permanent injunction or
               -----------------
other order, decree or ruling issued by any court of competent jurisdiction nor
any statute, rule, regulation or order entered, promulgated or enacted by any
governmental, regulatory or administrative agency or authority, or national
securities exchange shall be in effect that would prevent the consummation of
the transactions contemplated by this Agreement.

          (e)  All Proceedings to Be Satisfactory. All proceedings to be taken
               ----------------------------------
by the Purchasers and all waivers and consents to be obtained by the Purchasers
in connection with the transactions contemplated hereby shall have been taken or
obtained by the Purchasers and all documents incident thereto shall be
satisfactory in form and substance to the Company and its counsel.

                                      VI.

                                  TERMINATION

          SECTION 6.01.  Termination by the Parties. This Agreement may be
                         --------------------------
terminated and the transactions contemplated hereby may be abandoned at any time
prior to the Closing Date:

          (a)  by mutual consent of the Purchasers and the Company; or

          (b)  by WCAS VII or GTCR upon the occurrence of any of the following:
(i) the termination of the Stock Purchase Agreement or (ii) an increase in the
Purchase Price (as defined in the Stock Purchase Agreement) to an aggregate
price greater than $200,000,000.

          (c)  by the Company or by WCAS VII or GTCR, if the transactions
contemplated hereby have not been consummated before December 1, 1999, unless
the failure to consummate such transactions results from a breach of any
representation, warranty or covenant of the party seeking to terminate this
Agreement.

SECTION 6.02.  Effect of Termination. In the event of the termination of this
               ---------------------
Agreement and the abandonment of the transactions contemplated hereby pursuant
to this Article VI, this Agreement shall thereafter become void and have no
effect, and no party hereto shall have any liability to any other party hereto,
and except that nothing shall relieve any party from liability for any breach of
this Agreement.

                                     VII.

                                 MISCELLANEOUS

          SECTION 7.01.  Expenses, Etc. In the event that the transactions
                         -------------
contemplated hereby are consummated, the Company shall reimburse the Purchasers
or pay on their behalf any reasonable fees and expenses incurred by them in
connection with the negotiation and preparation of this Agreement and the
related documents and agreements (including subsequent amendments and waivers
relating hereto or to the Ancillary Agreements) contemplated hereby, including
(without limitation) reasonable fees and expenses of attorneys, accountants and
consultants, filing fees payable pursuant to the HSR Act and stamp, stock
issuance and other similar taxes payable in respect of the issuance of the
Shares.

          SECTION 7.02.  Survival of Agreements. All covenants, agreements,
                         ----------------------
representations and warranties made herein shall survive the execution and
delivery of this Agreement and the issuance,

                                       18
<PAGE>

sale and delivery of the Securities pursuant hereto, notwithstanding any
investigation made at any time by or on behalf of any party hereto. All
statements contained in any certificate or other instrument delivered by the
Company hereunder shall be deemed to constitute representations and warranties
made by the Company.

          SECTION 7.03.  Parties in Interest. All covenants and agreements
                         -------------------
contained in this Agreement by or on behalf of any party hereto shall bind and
inure to the benefit of the respective successors and assigns of such party
hereto whether so expressed or not.

          SECTION 7.04.  Notices. Any notice or other communications required or
                         -------
permitted hereunder shall be deemed to be sufficient if contained in a written
instrument delivered in person or duly sent by first class certified mail,
postage prepaid, by nationally recognized overnight courier, or by telecopy
addressed to such party at the address or telecopy number set forth below or
such other address or telecopy number as may hereafter be designated in writing
by the addressee to the addressor listing all parties:

     if to the Company, to:

          Select Medical Corporation
          4718 Old Gettysburg Road
          P.O. Box 2034
          Mechanicsburg, Pennsylvania 17055
          Attention: General Counsel
          Telecopy Number:  717-972-1042

     with a copy to:

          Dechert
          4000 Bell Atlantic Tower
          1717 Arch Street
          Philadelphia, PA 19103
          Attention:  Carmen J. Romano, Esq.
          Telecopy Number:  215-994-2222

     if to any Purchaser, to it at its address set forth on Schedule I hereto;
     with a copy to:

          Reboul, MacMurray, Hewitt, Maynard & Kristol
          45 Rockefeller Plaza
          New York, New York 10111
          Attention:  Othon A. Prounis, Esq.
          Telecopy Number: 212-841-5725

     and to:

          Kirkland & Ellis
          200 E. Randolph Drive
          Chicago, Illinois 60601
          Attention:  Margaret A. Gibson, Esq.
          Telecopy Number: 312-861-2200

                                       19
<PAGE>

or, in any case, at such other address or addresses as shall have been furnished
in writing by such party to the other parties hereto. All such notices,
requests, consents and other communications shall be deemed to have been
received (a) in the case of personal delivery, on the date of such delivery, (b)
in the case of mailing, on the fifth business day following the date of such
mailing, (c) in the case of delivery by overnight courier, on the business day
following the date of delivery to such courier, and (d) in the case of telecopy,
when received.

          SECTION 7.05.  Entire Agreement; Assignment. This Agreement
                         ----------------------------
(including the Schedules and Exhibits hereto) constitutes the entire agreement
of the parties with respect to the subject matter hereof and may not be amended
or modified nor any provisions waived except in a writing signed by the Company
and a majority in interest (determined on the basis of amounts to be invested in
the Company pursuant to this Agreement) of the Purchasers. This Agreement shall
not be assigned by operation of law or otherwise without the consent of the
other parties hereto; provided that (i) any Purchaser may assign its rights
                      --------
hereunder to a parent, subsidiary or affiliate of such Purchaser and (ii) GTCR
may assign its rights hereunder to any investment fund managed by Golder, Thoma,
Cressey, Rauner, Inc., Thoma Cressey Equity Partners, Inc. or OTCR Golder
Rauner, L.L.C., or any successors thereto.

          SECTION 7.06.  Counterparts. This Agreement may be executed in two or
                         ------------
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

          SECTION 7.07.  Definitions. For the purposes of this Agreement, the
                         -----------
following terms have the meanings set forth below:

          "Affiliate" of any particular person or entity means any other person
           ---------
or entity controlling, controlled by or under common control with such
particular person or entity.

          "Closing" and "Closing Date" have the meanings assigned to them in
           -------       ------------
Section 1.03 hereof.

          "Officer's Certificate" means a certificate signed by the Company's
           ---------------------
chief executive officer or its president, stating that (i) the officer signing
such certificate has made or has caused to be made such investigations as are
reasonable in light of the circumstances to verify the accuracy of the
information set forth in such certificate and (ii) to the best of such officer's
knowledge, such certificate does not misstate any material fact and does not
omit to state any fact necessary to make the certificate not misleading.

          "Restricted Securities" means (i) the Securities and (ii) any
           ---------------------
securities issued with respect to the Shares by way of a stock dividend or stock
split or in connection with a combination of shares, recapitalization, merger,
consolidation or other reorganization. As to any particular Restricted
Securities, such securities shall cease to be Restricted Securities when they
have (a) been effectively registered under the Securities Act and disposed of in
accordance with the registration statement covering them, (b) become eligible
for sale pursuant to Rule 144(k) (or any similar provision then in force) under
the Securities Act or (c) been otherwise transferred and new certificates for
them not bearing the Securities Act legend set forth in Article III have been
delivered by the Company in accordance with Section 4.13. Whenever any
particular securities cease to be Restricted Securities, the holder thereof
shall be entitled to receive from the Company, without expense, new securities
of like tenor not bearing a Securities Act legend of the character set forth in
Article III.

                                       20
<PAGE>

          "Securities and Exchange Commission" includes any governmental body or
           ----------------------------------
agency succeeding to the functions thereof.

          "Stockholders Agreement" has the meaning assigned to it in Section
           ----------------------
2.02(b) hereof.

          SECTION 7.08.  Headings. Headings and section reference numbers in
                         --------
this Agreement are for reference purposes only and shall not in any way affect
the meaning or interpretation of this Agreement.

          SECTION 7.09.  Severability. In the event that any one or more of the
                         ------------
provisions set forth herein shall, for any reason, be held to be invalid,
illegal or unenforceable in any respect, such invalidity, illegality or
unenforceability shall not affect any other provision of this Agreement.

          SECTION 7.10.  Governing Law. This Agreement shall be governed by and
                         -------------
construed in accordance with the laws of the State of New York.

                                       21
<PAGE>

          IN WITNESS WHEREOF, the Company and the Purchasers have executed this
Agreement as of the day and year first above written.

                         SELECT MEDICAL CORPORATION

                         By /s/ Michael E. Tarvin
                           -----------------------------
                         Name:
                         Title:

                         GTCR FUND VI, L.P.
                         By GTCR Partners VI, L.P., General Partner
                         By GTCR Golder Rauner, L.L.C., General Partner

                         By /s/ Donald J. Edwards
                           -----------------------------
                         Name:
                         Its:  Principal

                         THOMA CRESSEY FUND VI, L.P.
                         By TC Partners VI, L.P., General Partner
                         By Thoma Cressey Equity Partners, Inc., General Partner

                         By /s/ Bryan C. Cressey
                           -----------------------------
                         Name:
                         Its:  Principal

                         WELSH, CARSON, ANDERSON & STOWE VII, L.P
                         By WCAS VII Partners, L.P., General Partner

                         By /s/ Jonathan Rather
                           -----------------------------
                         Name:
                         Title:

                                       22
<PAGE>

                         WCAS CAPITAL PARTNERS III, L.P.
                         By WCAS CP III Associates, L.L.C., General Partner

                         By
                           -----------------------------
                         Name:
                         Title:

                         WCAS HEALTHCARE PARTNERS, L.P.
                         By WCAS HC Partners, General Partner

                         By
                           -----------------------------
                         Name:
                         Title:

                         Bruce K. Anderson
                         Russell L. Carson
                         Anthony J. de Nicola
                         Thomas E. McInerney
                         D. Scott Mackesy
                         Robert A. Minicucci
                         Priscilla A. Newman
                         Andrew M. Paul
                         Paul B. Queally
                         Rudolph E. Rupert
                         Lawrence B. Sorrel
                         Richard H. Stowe
                         Laura M. VanBuren
                         Patrick J. Welsh

                         By
                           -----------------------------
                              Jonathan Rather
                              as Attorney-in-Fact

                         /s/ David F. Bellet
                         -------------------------------
                              David F. Bellet

                                      23

<PAGE>

                         WCAS CAPITAL PARTNERS III, L.P.
                         By WCAS CP III Associates, L.L.C., General Partner

                         By /s/ Jonathan Rather
                           -----------------------------
                         Name:
                         Title:

                         WCAS HEALTHCARE PARTNERS, L.P.
                         By WCAS HC Partners, General Partner

                         By /s/ Jonathan Rather
                           -----------------------------
                         Name:
                         Title:

                         John Almeida
                         Bruce K. Anderson
                         Russell L. Carson
                         Anthony J. de Nicola
                         James B. Hoover
                         Thomas E. McInerney
                         D. Scott Mackesy
                         Robert A. Minicucci
                         Priscilla A. Newman
                         Andrew M. Paul
                         Paul B. Queally
                         Jonathan Rather
                         Rudolph E. Rupert
                         Lawrence B. Sorrel
                         Richard H. Stowe
                         Sanjay Swani
                         Sean Traynor
                         Laura M. VanBuren
                         Patrick J. Welsh

                         By /s/ Jonathan Rather
                           -----------------------------
                              Jonathan Rather
                              as Attorney-in-Fact

                                       24
<PAGE>

                         GTCR VI EXECUTIVE FUND, L.P.
                         By GTCR Partners VI. L.P., General Partner
                         By GTCR Golder Rauner. L.L.C., General Partner

                         By /s/ Donald J. Edwards
                           -----------------------------
                         Name:
                         Its: Principal

                         GTCR ASSOCIATES VI
                         By GTCR Partners VI, L.P., Managing General Partner
                         By GTCR Golder Rauner. L.L.C.. General Partner

                         By /s/ Donald J. Edwards
                           -----------------------------
                         Name:
                         Its: Principal

                                       25
<PAGE>

                         ANVERS, L.P.
                         By F.S.I.P., L.L.C., General Partner

                         By /s/ Illegible
                           -----------------------------
                         Name:  Leo Swergold
                         Title: Senior Managing Director

                         ANVERS II, L.P.
                         By F.S.I.P., L.L.C., General Partner

                         By /s/ Illegible
                           -----------------------------
                         Name:  Leo Swergold
                         Title: Senior Managing Director

                                       26
<PAGE>

                         JAMES B. HOOVER IRA ROLLOVER
                         CHASE CUSTODIAN

                         By /s/ James B. Hoover
                           -----------------------------
                         Name:
                         Title:

                         -------------------------------
                              David F. Bellet

                         ANVERS, L.P.
                         By F.S.I.P., L.L.C., General Partner

                         By
                           ------------------------------
                         Name:  Leo Swergold
                         Title:  Senior Managing Director

                         ANVERS II, L.P.
                         By F.S.I.P., L.L.C., General Partner

                         By
                           ------------------------------
                         Name:  Leo Swergold
                         Title:  Senior Managing Director

                                       27<PAGE>

                                                                    Exhibit 10.7

                        PROFESSIONAL SERVICES AGREEMENT
                        -------------------------------

          PROFESSIONAL SERVICES AGREEMENT dated as of November 19, 1999 (the
"Agreement"), by and among SELECT MEDICAL CORPORATION, a Delaware corporation
(the "Company"), GOLDER, THOMA, CRESSEY, RAUNER, [NC., a Delaware corporation
("Golder Rauner"), THOMA CRESSEY EQUITY PARTNERS INC. (together with Golder
Rauner, "GTCR") and WCA MANAGEMENT CORPORATION, a New York corporation ("WCAS").

          WHEREAS (i) GTCR Fund VI, L.P., a Delaware limited partnership, GTCR
VI Executive Fund, LP., a Delaware limited partnership, GTCR Associates VI,
L.P., a Delaware limited partnership, and Thoma Cressey Fund VI, L.P., a
Delaware limited partnership (collectively, the "GTCR Purchasers"), (ii) Welsh,
Carson, Anderson & Stowe VII, L.P., a Delaware limited partnership and WCAS
Capital Partners III, L.P., a Delaware limited partnership ("WCAS CP III")
(collectively, the "WCAS Purchasers" and, together with the GTCR Purchasers, the
"Purchasers") are purchasing an aggregate 16,000,000 shares of Class B Preferred
Stock, $.01 par value (the "Class B Preferred") shares of the Company pursuant
to the terms of the Securities Purchase Agreement of even date herewith (the
"Purchase Agreement") among the Company and the Purchasers, and WCAS CP III is
purchasing an aggregate 1,667,000 shares of Common Stock, $.01 par value
("Common Stock", together with the Class B Preferred, the "Shares") and a Senior
Subordinated Note of the Company due November 19, 2009 in the principal amount
of $25,000,000 (the "Note") pursuant to the terms of such Purchase Agreement
(the purchase of such shares of Common Stock, Class B Preferred and the Note
pursuant to the Purchase Agreement being referred to herein collectively as the
"Investments"); and

          WHEREAS, each of GTCR and WCAS has provided substantial financial and
management consulting services to the Company in connection with arranging for
the investments to be made by the GTCR Purchasers and the WCAS Purchasers,
respectively, and the Company is willing to compensate each of GTCR and WCAS for
such services as provided herein; and

          WHEREAS it is a condition precedent to the obligation of the
Purchasers and the Other Purchasers to close the transactions contemplated by
the Purchase Agreement that the Company execute and deliver this Agreement and
provide to the Other Purchasers compensation for their commitment to make the
Investments contemplated by this Agreement as provided herein;

          NOW, THEREFORE, in consideration of the foregoing premises and the
respective agreements hereinafter set forth and the mutual benefits to be
derived herefrom, the Company, GTCR and WCAS hereby agree as follows:

          1.   Investment Fee. Upon the closing of the purchase and sale of the
               --------------
Shares and Note by the GTCR Purchasers and the WCAS Purchasers pursuant to the
Purchase Agreement, the Company shall pay (i) to GTCR an investment fee in
immediately available
<PAGE>

funds equal to one percent (1%) of the total cash consideration paid to the
Company by the GTCR Purchasers in connection with such purchase and sale and
(ii) to WCAS an investment fee in immediately available funds equal to one
percent (1%) of the total cash consideration paid to the Company by the WCAS
Purchasers in connection with such purchase and sale.

     2.    Independent Contractor. The Company, GTCR and WCAS agree that any and
           ----------------------
all services provided in connection with this Agreement by GTCR and WCAS were
provided by such party as an independent contractor, and neither of GTCR nor
WCAS or any of their respective directors, officers, or employees shall be
considered employees or agents of the Company as a result of this Agreement.

     3.    Entire Agreement: Modification. This Agreement (a) contains the
           ------------------------------
complete and entire understanding and agreement of the Company, GTCR and WCAS
with respect to the subject matter hereof, and (b) supersedes all prior and
contemporaneous understandings, conditions and agreements, oral or written,
express or implied, respecting the subject matter hereof.

     4.    Waiver of Breach. The waiver by either party of a breach of any
           ----------------
provision of this Agreement by the other party shall not operate or be construed
as a waiver of any subsequent breach of that provision or any other provision
hereof

     5.    Assignment. None of the parties hereto may assign such party's rights
           ----------
or obligations under this Agreement without the express written consent of the
other parties hereto.

     6.    Successors. This Agreement and all the obligations and benefits
           ----------
hereunder shall inure to the successors and permitted assigns of the parties.

     7.    Counterparts. This Agreement may be executed and delivered by each
           ------------
party hereto in separate counterparts, each of which when so executed and
delivered shall be deemed an original and both of which taken together shall
constitute one and the same agreement.

     8.    Choice of Law. This Agreement shall be governed by and construed in
           -------------
accordance with the domestic laws of the State of New York, without giving
effect to any choice of law or conflict of law provision or rule (whether of the
State of New York or any other jurisdiction) that would cause the application of
the laws of any jurisdiction other than the State of New York.

                                       2
<PAGE>

          IN WITNESS WHEREOF, the Company, GTCR and WCAS have caused this
Professional Services Agreement to be duly executed and delivered on the date
and year first above written.

                              SELECT MEDICAL CORPORATION

                              By /s/ Michael E. Tarvin
                                -----------------------------------
                              Name:
                              Title:

                              WCA MANAGEMENT CORPORATION

                              By /s/ Jonathan Rather
                                -----------------------------------
                              Name:
                              Title:

                              GOLDER, THOMA, CRESSEY, RAUNER, INC.

                              By /s/ Donald J. Edwards
                                -----------------------------------
                              Name:
                              Title:

                              THOMA CRESSEY EQUITY PARTNERS INC.

                              By /s/ Bryan C. Cressey
                                -----------------------------------
                              Name:
                              Title:

                                       3

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