Document:

<PAGE>
                             MODIFICATION AGREEMENT
                    (SECOND AMENDMENT TO OPERATIVE DOCUMENTS)

        This MODIFICATION AGREEMENT (this "AGREEMENT") is made effective as of
January 25, 2002, by BNP PARIBAS LEASING CORPORATION, a Delaware corporation
("BNP"), and NETWORK APPLIANCE, INC., a California corporation ("NAI").

                                 R E C I T A L S

        A. BNP and NAI executed a Lease Agreement (Phase IV-Improvements) dated
as of October 2, 2000 (as amended, the "IMPROVEMENTS LEASE") and a Lease
Agreement (Phase IV-Land) dated as of October 2, 2000 (as amended, the "LAND
LEASE"), together with certain other Operative Documents relating thereto
(capitalized terms used and not otherwise defined in this Agreement are intended
to have the meanings assigned to them in the Common Definitions and Provisions
Agreement (Phase IV - Improvements) executed by BNPLC and NAI contemporaneously
with the Improvements Lease and in the Common Definitions and Provisions
Agreement (Phase IV - Land) executed by BNPLC and NAI contemporaneously with the
Land Lease, each as amended).

        B. BNP, NAI, and the undersigned Participants desire to amend the
Improvements Lease, the Land Lease, and the Pledge Agreements as provided below
on and subject to the terms and conditions set forth below.

        NOW, THEREFORE, in consideration of the above recitals and other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties agree as follows:

1.      Financial Covenants. Subject to the approval of a Majority (under and as
        defined in the Participation Agreement) as provided in the next
        paragraph, Schedule 1 attached to each of the Land Lease, the
        Improvements Lease, and the Pledge Agreements is hereby amended and
        restated in its entirety with Schedule 1 attached hereto.

2.      Collateral Percentage. At all times hereafter, the Collateral Percentage
        for purposes of the Pledge Agreements shall be one hundred percent
        (100%), and a Mandatory Collateral Period shall be in effect at all
        times hereafter.

3.      Approval by a Majority. The foregoing modifications are made contingent
        upon approval by a "Majority" under and as defined in the Participation
        Agreement, which approval is to be evidenced by the execution of this
        Modification in the spaces provided below by parties to the
        Participation Agreement.

4.      Representations and Warranties. NAI hereby represents and warrants to
        BNP and the Participants as follows:

        (a)    No Default has occurred or is continuing.

        (b)    The execution, delivery and performance by NAI of this
               Modification has been duly authorized by all necessary corporate
               and other action and do not and will not require any registration
               with, consent or approval of,

<PAGE>

               notice to or action by, any Person in order to be effective and
               enforceable.

        (c)    All representations and warranties of NAI contained in the
               Operative Documents are true and correct on and as of the date
               hereof.

5.      Ratification. Each of the Operative Documents are hereby ratified and
        confirmed in all respects.

6.      Entire Agreement. This Agreement and the documents and agreements
        referred to herein set forth the entire agreement between the parties
        concerning the subject matter hereof and no amendment or modification of
        this Agreement shall be binding or valid unless expressed in a writing
        executed by both parties hereto.

7.      Successors and Assigns. All of the covenants, agreements, terms and
        conditions to be observed and performed by the parties hereto shall be
        applicable to and binding upon their respective heirs, personal
        representatives, successors and, to the extent assignment is permitted
        under the Leases, their respective assigns.

8.      Fees and Expenses. NAI covenants and agrees to pay to or reimburse BNP,
        upon demand, for all reasonable out-of-pocket costs and expenses
        (including the reasonable fees, charges and disbursements of counsel)
        incurred by BNP in connection with the development, preparation,
        negotiation, execution and delivery of this Modification. NAI covenants
        and agrees to pay to BNP, for payment in turn by BNP to each Participant
        which executes and returns this Modification to BNP on or prior to
        February 11, 2002, an amendment fee equal to 10 basis points of all such
        Participants' Percentages under the Participation Agreement multiplied
        by the original Maximum Construction Allowance (not taking into account
        any Prior Funding Advances), such fee to be payable on the date hereof.

9.      Execution in Counterparts. To facilitate execution, this Agreement may
        be executed in as many identical counterparts as may be required. It
        shall not be necessary that the signature of, or on behalf of, each
        party, or that the signature of all persons required to bind any party,
        appear on each counterpart. All counterparts, taken together, shall
        collectively constitute a single instrument. It shall not be necessary
        in making proof of this Agreement to produce or account for more than a
        single counterpart containing the respective signatures of, or on behalf
        of, each of the parties hereto. Any signature page to any counterpart
        may be detached from such counterpart without impairing the legal effect
        of the signatures thereon and thereafter attached to another counterpart
        identical thereto except having attached to it additional signature
        pages.

                                       2
<PAGE>

10.     Recitals. The recitals contained herein are incorporated by this
        reference.

                                       3
<PAGE>

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

                                         BNP PARIBAS LEASING CORPORATION,
                                         a Delaware corporation

                                         By:____________________________________
                                         Lloyd G. Cox, Managing Director

                                         NETWORK APPLIANCE, INC., a California
                                         corporation

                                         By:____________________________________
                                         Name:__________________________________
                                         Title:_________________________________

                                       4
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

BNP PARIBAS

By:____________________________________
   Name:_______________________________
   Title:______________________________

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       5
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

BANK OF AMERICA, N.A.

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       6
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

ERSTE BANK

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       7
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

WELLS FARGO BANK, N.A.

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       8
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

CDC FINANCE - CDC IXIS

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       9
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

THE INDUSTRIAL BANK OF JAPAN LIMITED

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       10
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

FBTC LEASING CORP.

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       11
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

THE DAI-ICHI  KANGYO BANK, LTD.

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       12
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

AIB INTERNATIONAL FINANCE

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       13
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

BANK HAPOALIM B.M.

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       14
<PAGE>

[Continuation of signature pages to Amendment dated to be effective January 25,
2002]

The undersigned Participant hereby consents to the foregoing Amendment:

THE BANK OF NOVA SCOTIA

By:____________________________________
   Name:_______________________________
   Title:______________________________

                                       15
<PAGE>

                                   Schedule 1

                               FINANCIAL COVENANTS

        This Schedule 1 is attached to and made a part of (a) the Lease
Agreement (Phase IV - Improvements) (as amended, the "IMPROVEMENTS LEASE") dated
to be effective as of October 2, 2000 (the "EFFECTIVE DATE"), between BNP
Paribas Leasing Corporation, a Delaware corporation, formerly known as BNP
Leasing Corporation ("BNPLC"), and Network Appliance, Inc., a California
corporation ("NAI"), (b) the Lease Agreement (Phase IV - Land) (as amended, the
"LAND LEASE" and, together with the Improvements Lease, the "LEASES") dated to
be effective as of the Effective Date, between BNPLC and NAI, (c) the Pledge
Agreement (Phase IV - Improvements) (as amended, the "PLEDGE AGREEMENT
(IMPROVEMENTS)") dated to be effective as of the Effective Date, among BNPLC,
NAI, and BNP Paribas, as a Participant and as agent for any financial
institutions that become Participants thereunder from time to time, and (d) the
Pledge Agreement (Phase IV - Land) (as amended, and collectively with the Pledge
Agreement (Improvements), the "PLEDGE AGREEMENTS") dated to be effective as of
the Effective Date, among BNPLC, NAI, and BNP Paribas, as a Participant and as
agent for any financial institutions that become Participants thereunder from
time to time.

                             PART I - DEFINED TERMS

        In this Schedule 1, capitalized terms used but not defined herein shall
have the meaning assigned to them in the Leases or the Common Definitions and
Provisions Agreements referenced in the Leases; and the following capitalized
terms shall have the following meanings:

        "ADJUSTED NET INCOME" means, for any fiscal period of NAI, the aggregate
        net income earned (or net losses incurred) during such period by NAI and
        its Subsidiaries (determined on a consolidated basis), plus any
        Permitted Non-Cash Charges deducted in determining such net income (or
        net loss).

        "ADJUSTED EBIT" means, for any accounting period, net income (or net
        loss) of NAI and its Subsidiaries (determined on a consolidated basis),
        plus the amounts (if any) which, in the determination of net income (or
        net loss) for such period, have been deducted for (a) interest expense,
        (b) income tax expense (c) rent expense under leases of property, and
        (d) Permitted Non-Cash Charges, but in no event shall Adjusted EBIT be
        less than $1.00.

        "CONSOLIDATED TANGIBLE NET WORTH" means the excess of (1) the total
        assets, other than Intangible Assets, of NAI and its Subsidiaries
        (determined on a consolidated basis) over (2) the total liabilities of
        NAI and its Subsidiaries (determined on a consolidated basis).

        "DEBT" as used in this Exhibit shall have the meaning assigned to it in
        the Common Definitions and Provisions Agreements, where "Debt" of any
        Person is defined to mean (without duplication of any item) the sum of:
        (a) indebtedness of such Person for borrowed money; (b) indebtedness of
        such Person for the deferred purchase price of property or services
        (except trade payables and accrued expenses constituting current
        liabilities in the ordinary course of business); (c) the face amount of
        any outstanding letters of credit issued for the account of such Person;
        (d) obligations of such Person arising under acceptance facilities; (e)
        guaranties, endorsements (other than for

                                       16
<PAGE>

        collection in the ordinary course of business) and other contingent
        obligations of such Person to purchase, to provide funds for payment, to
        provide funds to invest in any Person, or otherwise to assure a creditor
        against loss; (f) obligations of others secured by any Lien on property
        of such Person; (g) obligations of such Person as lessee under Capital
        Leases; and (h) the obligations of such Person, contingent or otherwise,
        under any "synthetic" or other lease of property or related documents
        (including a separate purchase agreement) which provides that such
        Person or any of its Affiliates must purchase or cause another Person to
        purchase any interest in the leased property and thereby guarantee a
        minimum residual value of the leased property to the lessor (a
        "SYNTHETIC LEASE"). For purposes of this definition, the amount of the
        obligations described in clause (h) of the preceding sentence with
        respect to any lease classified according to GAAP as an "operating
        lease," shall equal the sum of (1) the present value of rentals and
        other minimum lease payments required in connection with such lease
        [calculated in accordance with SFAS 13 and other GAAP relevant to the
        determination of the whether such lease must be accounted for as an
        operating lease or capital lease], plus (2) the fair value of the
        property covered by the lease; provided, however, that such amount shall
        not exceed the price, as of the date a determination of Debt is required
        hereunder, for which the lessee can purchase the leased property
        pursuant to any valid ongoing purchase option if, upon such a purchase,
        the lessee shall be excused from paying rentals or other minimum lease
        payments that would otherwise accrue after the purchase. Notwithstanding
        the foregoing, solely for the purpose of calculating the financial
        covenants provided for in Part II of this Schedule 1, NAI may exclude
        from the calculation of Debt any payments or obligations required
        pursuant to or in connection with the Leases (or under other Synthetic
        Leases with BNPLC from time to time, if any).

        "FIXED CHARGES" means, for any accounting period, the sum (without
        duplication of any item) of the following charges or costs incurred or
        paid by NAI and its Subsidiaries (determined on a consolidated basis):
        (a) gross interest expense accruing during such period, plus (b)
        amortization of principal or debt discount in respect of all Debt during
        such period, plus (c) rent payable under all leases of property during
        such period, plus (d) taxes payable during such period (but in no event
        less than $1.00, regardless of any tax refunds received).

        "INTANGIBLE ASSETS" means assets of NAI and its Subsidiaries (determined
        on a consolidated basis) that are properly classified as "INTANGIBLE
        ASSETS" in accordance with GAAP and, in any event, shall include
        goodwill, patents, trade names, trademarks, copyrights, franchises,
        experimental expense, organization expense, unamortized debt discount
        and expense, and deferred charges (other than prepaid insurance, prepaid
        taxes and current deferred taxes to the extent any such prepaid or
        deferred items are classified on the balance sheet of NAI and its
        consolidated Subsidiaries as current assets in accordance with GAAP and
        with the concurrence of NAI's independent public accountants).

        "MANDATORY COLLATERAL PERIOD" means any period during which,
        notwithstanding any contrary designation of a Collateral Percentage by
        NAI under the Pledge Agreements, the Collateral Percentage for purposes
        of the Pledge Agreements shall be one hundred percent (100%).

        "PERMITTED NON-CASH CHARGES" means the amounts (if any) which, in the
        determination of net income (or net loss) for any relevant fiscal
        period, have been deducted by NAI or its Subsidiaries for non-cash
        charges made to write down goodwill or research and development costs in
        connection with acquisitions permitted by this Schedule 1.

                                       17
<PAGE>

        "QUICK RATIO" means the ratio of:

                      (A) the sum (without duplication of any item) of the
               following assets of NAI and its Subsidiaries (determined on a
               consolidated basis): unencumbered cash; plus unencumbered short
               term cash investments; plus other unencumbered marketable
               securities which are classified as short term investments in
               accordance with GAAP; plus unencumbered accounts receivable,
               computed net of reserves for uncollectible amounts as determined
               in accordance with GAAP, but excluding collateral delivered and
               pledged under the Pledge Agreements (or under any other pledge
               agreements with BNPLC securing Debt payable by NAI or any
               Subsidiary to BNPLC) in accordance with the requirements thereof
               (if any); plus, to

                      (B) the sum (without duplication of any item) of (1) all
               liabilities of NAI and its Subsidiaries (determined on a
               consolidated basis) treated as current liabilities in accordance
               with GAAP, plus (2) other obligations included in total Debt of
               NAI and its Subsidiaries (determined on a consolidated basis),
               the payment of which is due on demand or will become due within
               one year after the date on which the applicable determination of
               Quick Ratio is required hereunder.

        "ROLLING FOUR QUARTER PERIOD" means a period of four consecutive fiscal
        quarters of NAI, the last of which quarters ends after December 31,
        1999.

                PART II - FINANCIAL COVENANTS FOR LEASE AGREEMENT

NAI covenants that it shall not at any time suffer or permit:

1.      Minimum Unencumbered Cash and Cash Equivalents. The sum (without
        duplication of any item) of the unrestricted cash, unencumbered short
        term cash investments and unencumbered marketable securities classified
        as short term investments according to GAAP of NAI and its Subsidiaries
        (determined on a consolidated basis) (but excluding collateral delivered
        and pledged under the Pledge Agreements [or under any other pledge
        agreements with BNPLC securing Debt payable by NAI or any Subsidiary to
        BNPLC] in accordance with the requirements thereof [if any]) to be less
        than total Debt of NAI and its Subsidiaries (determined on a
        consolidated basis).

2.      Minimum Tangible Net Worth. Consolidated Tangible Net Worth to be less
        than the sum of: (a) ninety percent of the Consolidated Tangible Net
        Worth as of October 30, 1998; plus (b) seventy-five percent of NAI's net
        income (computed without deduction for net losses in any fiscal quarter)
        earned in each fiscal quarter since October 30, 1998; plus (c)
        one-hundred percent of the net proceeds of sales of stock in NAI or its
        Subsidiaries (other than sales to NAI or its Subsidiaries) after October
        30, 1998; less (d) Permitted Non-Cash Charges for any period after
        October 30, 1998.

3.      Minimum Quick Ratio. The Quick Ratio to be less than 1.50 to 1.00.

4.      Minimum Fixed Charge Coverage. The ratio of (a) Adjusted EBIT for any
        Rolling Four Quarter Period to (b) Fixed Charges for the same Rolling
        Four Quarter Period, to be less than 1.50 to 1.00.

                                       18
<PAGE>

5.      Minimum Profitability. Adjusted Net Income to be less than $1.00 in more
        than one fiscal quarter of any Rolling Four Quarter Period.

6.      Maximum Leverage Ratio. the ratio of (a) total Debt of NAI and its
        Subsidiaries (determined on a consolidated basis) at the end of any
        Rolling Four Quarter Period to (b) the Adjusted EBIT for the same Four
        Quarter Rolling Period, to exceed 3.00 to 1.00.

                       PART III - [INTENTIONALLY OMITTED]

                            PART IV - OTHER COVENANTS

Without limiting NAI's obligations under the other provisions of the Operative
Documents, during the Term, NAI shall not, without the prior written consent of
BNPLC in each case:

        A. Liens. Create, incur, assume or suffer to exist, or permit any of its
Consolidated Subsidiaries to create, incur, assume or suffer to exist, any Lien,
upon or with respect to any of its properties, now owned or hereafter acquired,
provided that the following shall be permitted except to the extent that they
would encumber any interest in the Property in violation of other provisions of
the Operative Documents:

                1. Liens for taxes or assessments or other government charges or
        levies if not yet due and payable or if they are being contested in good
        faith by appropriate proceedings and for which appropriate reserves are
        maintained;

                2. Liens imposed by law, such as mechanic's, materialmen's,
        landlord's, warehousemen's and carrier's Liens, and other similar Liens,
        securing obligations incurred in the ordinary course of business which
        are not past due for more than thirty (30) days, or which are being
        contested in good faith by appropriate proceedings and for which
        appropriate reserves have been established;

                3. Liens under workmen's compensation, unemployment insurance,
        social security or similar laws (other than ERISA);

                4. Liens, deposits or pledges to secure the performance of bids,
        tenders, contracts (other than contracts for the payment of money),
        leases, public or statutory obligations, surety, stay, appeal,
        indemnity, performance or other similar bonds, or other similar
        obligations arising in the ordinary course of business;

                5. judgment and other similar Liens against assets other than
        the Property or any part thereof in an aggregate amount not in excess of
        $3,000,000 arising in connection with court proceedings; provided that
        the execution or other enforcement of such Liens is effectively stayed
        and the claims secured thereby are being actively contested in good
        faith by appropriate proceedings;

                                       19
<PAGE>

                6. easements, rights-of-way, restrictions and other similar
        encumbrances which, in the aggregate, do not materially interfere with
        the occupation, use and enjoyment by NAI or any such Consolidated
        Subsidiary of the property or assets encumbered thereby in the normal
        course of its business or materially impair the value of the property
        subject thereto;

                7. Liens securing obligations of such a Consolidated Subsidiary
        to NAI or to another such Consolidated Subsidiary;

                8. Liens not otherwise permitted by this subparagraph A (and not
        encumbering the Property or any Collateral) incurred in connection with
        the incurrence of additional Debt or asserted to secure Unfunded Benefit
        Liabilities, provided that (a) the sum of the aggregate principal amount
        of all outstanding obligations secured by Liens incurred pursuant to
        this clause shall not at any time exceed five percent (5%) of
        Consolidated Tangible Net Worth at such time; and (b) such Liens do not
        constitute Liens against NAI's interest in any material Subsidiary or
        blanket Liens against all or substantially all of the inventory,
        receivables, general intangibles or equipment of NAI or of any material
        Subsidiary of NAI (for purposes of this clause, a "material Subsidiary"
        means any subsidiary whose assets represent a substantial part of the
        total assets of NAI and its Subsidiaries, determined on a consolidated
        basis in accordance with GAAP); and

                9. Liens incurred in connection with any renewals, extensions or
        refundings of any Debt secured by Liens described in the preceding
        clauses of this subparagraph A, provided that there is no increase in
        the aggregate principal amount of Debt secured thereby from that which
        was outstanding as of the date of such renewal, extension or refunding
        and no additional property is encumbered.

        B. Transactions with Affiliates. Enter into or permit any Subsidiary of
NAI to enter into any material transactions (including, without limitation, the
purchase, sale or exchange of property or the rendering of any service) with any
Affiliates of NAI except on terms (1) that would not cause or result in a
Default by NAI under the financial covenants set forth in Part II of this
Schedule, and (2) that are no less favorable to NAI or the relevant Subsidiary
than those that would have been obtained in a comparable transaction on an arm's
length basis from an unrelated Person.

        C. Compliance. Fail to preserve and maintain all licenses, permits,
governmental approvals, rights, privileges and franchises necessary for the
conduct of its business; or fail to comply with the provisions of all documents
pursuant to which NAI is organized and/or which govern NAI's continued existence
and with the requirements of all laws, rules, regulations and orders of a
governmental agency applicable to NAI and/or its business.

        D. Insurance. Fail to maintain and keep in force insurance of the types
and in amounts customarily carried in lines of business similar to that of NAI,
including but not limited to fire, extended coverage, public liability, flood,
property damage and workers' compensation, with all such insurance carried with
companies and in amounts satisfactory to BNPLC, or fail to deliver to BNPLC from
time to time at BNPLC's request schedules setting forth all insurance then in
effect.

        E. Facilities. fail to keep all properties useful or necessary to NAI's
business in good repair and condition, or to from time to time make necessary
repairs, renewals and replacements thereto so that such properties shall be
fully and efficiently preserved and maintained.

                                       20
<PAGE>

        F. Taxes and Other Liabilities. Fail to pay and discharge when due any
and all indebtedness, obligations, assessments and taxes, both real or personal,
including without limitation federal and state income taxes and state and local
property taxes and assessments, except (a) such as NAI may in good faith contest
or as to which a bona fide dispute may arise, and (b) for which NAI has made
provisions, to BNPLC's satisfaction, for eventual payment thereof in the event
that NAI is obligated to make such payment.

        G. Capital Expenditures. Make any additional investment in fixed assets
in any fiscal year in excess of an aggregate of twenty percent (20%) of NAI's
total assets as of the end of the prior fiscal year.

        H. Merger, Consolidation, Transfer of Assets. Merge into or consolidate
with any other entity (unless NAI is the surviving entity and remains in
compliance of all provisions of the Operative Documents); or make any
substantial change in the nature of NAI's business as conducted as of the date
hereof; or sell, lease, transfer or otherwise dispose of all or a substantial or
material portion of NAI's assets except in the ordinary course of its business.

        I. Loans, Advances, Investments. Make any loans or advances to or
investments in any person or entity, except (a) any of the foregoing existing as
of, and disclosed to BNPLC prior to, the date hereof, (b) loans to employees for
travel advances, relocation loans and other loans in the ordinary course of
business, (c) investments in accordance with NAI's investment policy, as in
effect from time to time, (d) existing investments in subsidiaries and joint
ventures which have been disclosed to BNPLC in writing prior to the date hereof,
and new investments in subsidiaries and joint ventures in amounts up to an
aggregated of $10,000,000.00, (e) loans to employees, officers, directors to
finance or refinance the purchase of equity securities of NAI.

        J. Dividends, Distributions. Declare or pay any dividend or distribution
either in cash, stock or any other property on NAI's stock now or hereafter
outstanding, nor redeem, retire, repurchase or otherwise acquire any shares of
any class of NAI's stock now or hereafter outstanding.

                                       21ex10-52

 

Exhibit 10.52

AMENDMENT NO. 4 TO

EMPLOYMENT AGREEMENT

This is an Amendment, dated September 17, 2001 (the Amendment) to the
Employment Agreement made as of the 1st day of March, 2000 by and between
SELECT MEDICAL CORPORATION, a Delaware corporation (the Employer), and ROCCO A.
ORTENZIO, an individual (the Employee).

Background

A.     The Employer and the Employee executed and delivered that certain Employment
Agreement dated as of March 1, 2000, that certain Amendment No. 1 to Employment
Agreement dated as of August 8, 2000, that certain Amendment No. 2 to
Employment Agreement dated as of February 23, 2001, and that certain Amendment
No. 3 to Employment Agreement dated as of April 24, 2001 (as amended, the
Employment Agreement). The Employer and the Employee now desire to further
amend the Employment Agreement as hereinafter provided.

B.     Accordingly, and intended to be legally bound hereby, the Employer and the
Employee agree as follows:

Agreement

1.     Section 1.02 of the Employment Agreement is hereby amended and restated as
follows:

1.02 Capacity. The Employee shall serve as Chairman of the Board of Directors
of the Employer. The Employee shall also serve as Chief Executive Officer of
the Employer until September 17, 2001. From and after September 17, 2001, the
Employee shall serve as Executive Chairman of the Employer.

2.     Except as amended hereby, the Employment Agreement shall continue in effect
in accordance with its terms.

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

	 	 	 
	 	 	
SELECT MEDICAL CORPORATION
	
	
	
	

	 	 	 
	
	
	
	

	 	 	
By: /s/ Michael E. Tarvin
	
	
	
	

	 	 	

	
	
	
	

	 	 	
Michael E. Tarvin,
	
	
	
	

	 	 	
Senior Vice President
	 	 	 
	
	
	
	

	 	 	
/s/ Rocco A. Ortenzio
	
	
	
	

	 	 	

	
	
	
	

	 	 	
Rocco A. Ortenzio

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