Document:

EXHIBIT

                        FOURTH AMENDMENT TO OFFICE LEASE

      This FOURTH AMENDMENT TO OFFICE LEASE (the "Amendment"), is made and
entered into as of the 26th day of March, 2002, by and between STAR PROPERTY
FUND, L.P. ("Landlord"), and PLAYBOY ENTERPRISES, INC., a Delaware corporation
("Tenant").

                                R E C I T A L S :
                                 - - - - - - - -

      A. Landlord's predecessor-in-interest, Beverly Mercedes Place, Ltd., a
California limited partnership, and Tenant entered into that certain Standard
Form Office Lease dated as of July 25, 1991 (the "Office Lease"), together with
that certain Rider No. 1 to Standard Form Office Lease attached thereto that
constitutes part of the Office Lease (the "Rider"), as amended by that certain
First Amendment to Lease dated as of October 10, 1991 (the "First Amendment"),
that certain First [sic] Amendment to Lease dated as of September 12, 1996 (the
"Second Amendment"), and the certain Third Amendment to Office Lease dated as of
March 15, 2002 (the "Third Amendment"), whereby Landlord leases to Tenant and
Tenant leases from Landlord certain premises more particularly described in the
Office Lease, consisting of (i) 42,139 rentable square feet of space in the
aggregate commonly known as Suites 201 and 300 (the "Original Premises") and
located on the second (2nd) and third (3rd) floors of that certain office
building located at 9242 Beverly Boulevard, Beverly Hills, California 90210 (the
"Building"); (ii) 4,500 rentable square feet located on the second (2nd) floor
of the Building and commonly known as Suite 230 (the "First Expansion Space");
and (iii) 1,401 rentable square feet located on the second (2nd) floor of the
Building and commonly known as Suite 281 (the "Second Expansion Space," and,
together with the First Expansion Space, collectively, the "Expansion
Premises"). The Office Lease, the First Amendment, the Second Amendment and the
Third Amendment shall be referred to collectively herein as the "Lease."

      B. Tenant desires to extend the Term of the Lease with respect to the
Original Premises and the Second Expansion Space only, and to make other
modifications to the Lease. In connection with the foregoing, Landlord and
Tenant desire to amend the Lease as hereinafter provided.

                               A G R E E M E N T :
                                - - - - - - - - -

      NOW, THEREFORE, in consideration of the foregoing recitals and the mutual
covenants contained herein, and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
hereby agree as follows.

      1. Defined Terms. All terms defined in the Lease when used herein shall
have their respective meanings as set forth in the Lease unless expressly
superseded by the terms of this Amendment.
<PAGE>

      2. Extension of Term of Lease. The term of the Lease with respect to the
Original Premises and the Second Expansion Space only, which is currently
scheduled to expire on June 30, 2002 (the "Original Extended Expiration Date"),
is hereby extended for an additional period of three (3) months (the "Second
Extended Term") on the terms and conditions set forth in this Amendment. The
Second Extended Term shall commence on July 1, 2002 (the "Second Extension
Commencement Date"), and shall expire on September 30, 2002 (the "Second
Extended Expiration Date"), unless the Lease, as amended hereby, is sooner
terminated in accordance with its terms. Notwithstanding the foregoing, the term
of the Lease with respect to the First Expansion Space only shall expire on the
Original Extended Expiration Date. Accordingly, effective as of the Second
Extension Commencement Date, the "Premises," as that term is used in the Lease,
as amended hereby, shall be deemed to exclude the First Expansion Space. Tenant
hereby agrees to vacate the First Expansion Space and surrender and deliver
exclusive possession of the First Expansion Space to Landlord on or before the
Original Extended Expiration Date in accordance with the provisions of the
Lease. In the event that Tenant retains possession of the First Expansion Space
or any part thereof after the Original Extended Expiration Date, then the
provisions of Paragraph 11 of the Office Lease shall apply with respect to the
First Expansion Space.

      3. Payment of Basic Rent. Commencing on the Second Extension Commencement
Date and continuing throughout the Second Extended Term, Tenant shall pay to
Landlord, in accordance with the terms of the Lease, Annual Basic Rent for the
Premises (i.e., the Original Premises and the Second Expansion Space) at the
rate of Two Million One Hundred Seventy-Seven Thousand and No/100 Dollars
($2,177,000.00) (i.e., $50.00 per rentable square foot of the Premises per annum
multiplied by 43,540 rentable square feet) in equal monthly installments of
Monthly Basic Rent in the amount of One Hundred Eighty-One Thousand Four Hundred
Sixteen and 67/100 Dollars ($181,416.67).

      4. Tenant's Percentage Share of Operating Expenses. Commencing on the
Second Extension Commencement Date and continuing throughout the Second Extended
Term, Tenant shall continue to pay Tenant's Percentage Share of Operating
Expenses with respect to the Original Premises and with respect to the Second
Expansion Space, in each instance accordance with the terms of the Lease.

      5. Condition of Premises. Landlord and Tenant acknowledge that Tenant is
currently occupying the Original Premises and the Expansion Premises pursuant to
the Lease; therefore, Tenant shall continue to accept the Original Premises, the
Expansion Premises and the Building in their presently existing, "as is"
condition. Landlord shall not be required to construct or pay for any
improvements, alterations or refurbishment work for the Original Premises or the
Expansion Premises. Nothing contained in this Amendment shall affect or limit
Landlord's obligation to maintain the Building in a first-class condition,
consistent with comparable existing office buildings in the area.

      6. Signage and Building Name. Notwithstanding anything to the contrary
contained in Paragraph 63 of the Office Lease (as set forth in the Rider) or
elsewhere in the Lease, as amended hereby, Tenant shall have no right during the
Second Extended Term to make any changes to the Building name, or to make and
changes or additions to any of Tenant's

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<PAGE>

signage existing in, on or about the Building as of the date of this Amendment
(other than in connection with ordinary maintenance and repair of Tenant's
existing signage).

      7. Brokers. Landlord and Tenant hereby warrant to each other that they
have no dealings with any real estate broker, agent or finder in connection with
the negotiation of this Amendment, and that they know of no real estate broker,
agent or finder who is entitled to a commission in connection with this
Amendment. Each party agrees to indemnify and defend the other party against and
hold the other party harmless from any and all claims, demands, losses,
liabilities, lawsuits, judgments, and costs and expenses (including, without
limitation, reasonable attorneys' fees) with respect to any leasing commission
or equivalent compensation alleged to be owing on account of the indemnifying
party's dealings with any real estate broker, agent or finder other than the
Brokers. The terms of this Section 7 shall survive the expiration or earlier
termination of this Amendment.

      8. Deletions. Paragraph 61 of the Office Lease (as set forth in the Rider)
is hereby deleted in its entirety and shall be of no further force or effect.

      9. Time of Essence. Time is of the essence with respect to the performance
of every provision of this Amendment in which time of performance is a factor.
Unless otherwise indicated, all references herein to a "number of days" shall
mean and refer to calendar days.

      10. No Further Modification. Except as set forth in this Amendment, all of
the terms and provisions of the Lease shall remain unmodified and in full force
and effect.

      IN WITNESS WHEREOF, this Amendment has been executed as of the day and
year first above written.

                                "Landlord":

                                STAR PROPERTY FUND, L.P.

                                By:   Star Property Fund Management, LLC,
                                      its general partner

                                      By:   TMW Real Estate Group, LLC,
                                            its sole member

                                            By:   TMW Real Estate Partners, Inc.
                                                  its managing member

                                                  By: /s/ Barry L. Howell
                                                      --------------------------
                                                  Name: Barry L. Howell
                                                        ------------------------
                                                  Title: Senior Vice President
                                                         -----------------------

                                       3
<PAGE>

                                "Tenant":

                                PLAYBOY ENTERPRISES, INC.,
                                a Delaware corporation

                                By: /s/ Howard Shapiro
                                   ---------------------------------------------
                                Name: Howard Shapiro
                                     -------------------------------------------
                                Title: Ex VP
                                      ------------------------------------------

                                By: /s/ Robert D. Campbell
                                   ---------------------------------------------
                                Name: Robert D. Campbell
                                     -------------------------------------------
                                Title: SR VP.      Treasurer
                                      ------------------------------------------

                                       4SUBLEASE

      AGREEMENT OF SUBLEASE made as of this 13th day of February, 2002, between
PLAYBOY ENTERPRISES INTERNATIONAL, INC., a Delaware corporation, having an
office at 680 North Lake Shore Drive, Chicago, Illinois 60611 ("Landlord"), and
CONCENTRA MANAGED CARE SERVICES, INC., a Massachusetts corporation, having an
office at 730 Fifth Avenue New York, New York 10019 ("Tenant").

                              W I T N E S S E T H:
                              - - - - - - - - - -

      WHEREAS, Landlord (as successor-in-interest to Playboy Enterprises, Inc.)
is the lessee under a certain lease, dated August 11, 1992 (the "Original
Lease"), as amended by that certain First Amendment to Lease dated as of
December 8, 1999 (the "First Amendment"; the Original Lease and the First
Amendment are collectively, the "Lease"), with Lexington Building Co. L.P. (as
successor-in-interest to Lexington Building Co.), as landlord (the "Prime
Lessor"), and Landlord, as tenant, which Lease demises the premises (the "Prime
Leased Premises") covering the entire 3rd floor, a portion of the 4th floor and
the entire 23rd floor in the building known as 730 Fifth Avenue, New York, New
York (the "Building"); and

      WHEREAS, Tenant desires to sublet a portion of the 4th floor (the
"Premises") in the Building, as more particularly described on Exhibit A
attached hereto and made a part hereof, and Landlord is willing to sublet the
same on the conditions hereinafter set forth;

      NOW, THEREFORE, the parties hereto hereby covenant and agree as follows:

      1. Demise; Term. Landlord hereby subleases to Tenant and Tenant hereby
hires from Landlord the Premises for a term to commence (subject to the
provisions of Sections 17 and 18 hereof) on the date of the Prime Lessor's
written consent to this Sublease (such date is called the "Commencement Date")
and to expire on July 31, 2004 (the "Expiration Date"), both dates inclusive.

      2. Fixed Rent. (a) Tenant covenants and agrees to pay to Landlord a fixed
basic rent ("Fixed Rent") as follows:

      (i)   for the period commencing on the Commencement Date and ending on the
            day before the first anniversary of the Commencement Date,
            $353,856.00 per annum ($29,488.00 per month);

<PAGE>

      (ii)  for the period commencing on the first anniversary of the
            Commencement Date and ending on the day before the second
            anniversary of the Commencement Date, $366,427.20 per annum
            ($30,535.60 per month); and

      (iii) for the period commencing on the second anniversary of the
            Commencement Date to and including the Expiration Date, $379,464.00
            per annum ($31,622.00 per month).

      (b) Tenant shall pay the Fixed Rent and Furniture Rent (as hereinafter
defined) in equal monthly installments in advance commencing on the Commencement
Date, and continuing on the third business day prior to the first day of each
month thereafter during the term of this Sublease, except that Tenant shall pay
the first monthly installment of Fixed Rent and Furniture Rent due hereunder
upon the execution hereof. Tenant shall make all payments of Fixed Rent,
Furniture Rent and all other sums of money as shall become due and payable by
Tenant to Landlord hereunder ("Additional Rent") to the office of Landlord, or
at such other place as Landlord may designate in writing, without demand (except
as expressly provided herein) and without any abatement, set-off or deduction
whatsoever.

      (c) If the Commencement Date occurs on a day other than the first day of a
calendar month, the Fixed Rent and Furniture Rent for such partial calendar
month shall be prorated.

      3. Additional Rent. (a) Tenant shall pay to Landlord, as Additional Rent
hereunder, the full amount of any other charge, fee, cost, sum or expense which
Landlord pays or incurs on or after the Commencement Date (x) for the provision
of, or in connection with, any services or supplies provided to or for the
Premises (or any part thereof) at the request of Tenant and (y) as may be
required pursuant to the terms and provisions of the Lease with respect to the
Premises.

            (b) Tenant shall pay to Landlord, as a portion of Fixed Rent, in
equal monthly installments in advance commencing on the Commencement Date, and
continuing on the third business day prior to the first day of each month
thereafter during the term of this Sublease, as the fixed annual electricity
rent inclusion factor, $3.00 per rentable square foot of the Premises which for
the purposes of this Section 3(b)) shall be deemed to be 9,312 rentable square
feet (the "ERIF") (the Fixed Rent set forth in Section 2(c) hereof includes an
allowance of $27,936.00 per annum on account of the ERIF). If any taxes are
payable in connection with the distributing of electrical energy on a rent
inclusion basis or if any taxes or surcharges, including sales taxes, are
imposed as a result of the resale of such energy to Tenant, Tenant covenants and
agrees

                                       2
<PAGE>

that, where permitted by law, Tenant shall pay to Landlord, as Additional Rent,
such taxes or surcharges.

      (c) Tenant shall pay any commercial rent or occupancy tax with regard to
the Premises either to the taxing authority, or, if appropriate, to Landlord, as
Additional Rent, at least five (5) business days before the due date of each and
every such tax payment to the taxing authority.

      (d) All payments of Additional Rent shall be paid by Tenant to Landlord
within five (5) business days after Landlord's request therefor; provided,
however, that if the Lease requires the making of payments on account of any
item of Additional Rent, Tenant shall make such payments at least five (5)
business days prior to its respective due date under the Lease without the need
for request therefor by Landlord.

      4. Use. The Premises shall be used only for general office use in
connection with Tenant's business, and for no other purpose.

      5. Incorporation; Lease. (a) Except as may be inconsistent with the terms
hereof, all of the terms, covenants and conditions of the Lease are hereby made
a part hereof with the same force and effect as if fully set forth at length
herein and the term "Landlord" in the Lease shall mean Landlord herein and the
term "Tenant" in the Lease shall mean Tenant herein and the term "Lease" in the
Lease shall mean this Sublease. Without limiting the foregoing, the parties
agree that the following provisions of the Lease are inconsistent with the terms
of this Sublease and therefore are not incorporated into this Sublease: Articles
33, 35, 38, 44, 54, 55, 56, 58, 59, 60 and 61 of the Original Lease; the first,
second and third sentences of Insert 5 to the First Rider to Lease; Inserts 23
and 125 to the First Rider to Lease; the penultimate sentence of Section 39(A)
of the Original Lease; Sections 57(J) (except the first sentence), (K) and (M)
of the Original Lease; Exhibits D, F, I, J and K of the Original Lease; and
Sections 3, 4, 5 and 13 of the First Amendment. Section 41(a) of the Original
Lease as incorporated herein is hereby amended and restated in its entirety to
read "Landlord shall make available electricity to the Premises from the public
utility company". In any case where the consent or approval of Prime Lessor
under the Lease is required, Landlord's consent shall also be required
hereunder.

      (b) Except as otherwise provided herein, the time limits contained in the
Lease for the giving of notices, making payments or demands or performing of any
act, condition or covenant on Landlord's part, as tenant thereunder, are changed
for the purposes of incorporation herein by reference by shortening same in each
instance by five (5) days, so that Tenant shall have a lesser time to observe or
perform hereunder

                                       3
<PAGE>

than Landlord has under the Lease. In no event, however, shall Tenant have less
than two (2) business days to so observe or perform. If Landlord or Tenant
receives any notice or demand from the Prime Landlord or Tenant receives any
notice or demand from the Prime Lessor under the Lease, said party shall
promptly give a copy thereof to the other.

      (c) Tenant hereby agrees to comply with all of the terms, covenants and
conditions of the Lease on the part of the tenant therein named to be performed
thereunder, other than, subject to the provisions of Sections 2 and 3 hereof,
the payment of base rent and additional rent under the Lease.

      (d) Performance by the Prime Lessor shall be deemed and accepted by Tenant
as performance by Landlord herein and Landlord shall not be responsible for any
breach of the Lease by Prime Lessor or any nonperformance or noncompliance with
any provision thereof by Prime Lessor, including the failure of Prime Lessor to
provide any services, utilities and/or repairs. Landlord makes no representation
that Prime Lessor will provide any or all of the services, utilities and/or
repairs referred to and incorporated by reference into this Sublease.

      (e) Neither Landlord nor Tenant shall do nor permit anything to be done
which would violate or breach the terms and provisions of the Lease or cause the
Lease to be terminated or forfeited by reason of any right of termination or
forfeiture reserved or vested in the Prime Lessor under the Lease.

      6. Remedies. (a) Landlord shall have the same rights and remedies with
respect to a breach of this Sublease by Tenant as the Prime Lessor has with
respect to a breach of the Lease, as if the same were more fully set forth at
length herein, and Landlord shall have, with respect to Tenant, this Sublease
and the Premises, all of the rights, powers, privileges and immunities as are
had by the Prime Lessor under the Lease.

      (b) If Prime Lessor, in writing, shall claim or otherwise allege that a
use of, action or inaction involving, or other circumstances concerning, the
Premises is in violation of any provision of or may become a default under the
Lease, in addition to Landlord's other rights hereunder and at law, Tenant,
promptly after notice from Landlord, shall cease such use or action, take such
action or cause such circumstance to be changed so that the basis or alleged
basis for such claim or allegation shall no longer exist.

      7. Termination of Lease. Provided that Tenant is not in default under this
Sublease, Landlord covenants and agrees not to voluntarily cancel or surrender
the

                                       4
<PAGE>

Lease or voluntarily modify the Lease so as to deprive Tenant of its material
rights under this Sublease, without the prior written consent of Tenant;
provided, however, Landlord may voluntarily cancel or surrender the Lease if
Prime Lessor agrees to recognize this Sublease as a direct lease between Prime
Lessor and Tenant. Notwithstanding anything to the contrary contained herein, if
the Lease is terminated for any reason whatsoever, whether by operation of law
or otherwise, except through the default of Landlord, as tenant thereunder
(excluding a default caused by Tenant), Landlord shall not be responsible for
such termination or the termination of this Sublease as a result thereof.

      8. Subordination. This Sublease is subject and subordinate to the Lease
and to all other matters and interests to which the Lease is or shall be
subordinate. In the event of termination, re-entry or dispossession by Prime
Lessor under the Lease, Prime Lessor may, at its option, take over all of the
right, title and interest of Landlord under this Sublease and Tenant shall, at
Prime Lessor's option, attorn to Prime Lessor pursuant to the then executory
provisions of this Sublease. In accordance with the requirements of Section
45(B)(2)(b) of the Lease, to induce Prime Lessor to consent to this Sublease,
Tenant agrees that if Prime Lessor shall recover or come into possession of the
Premises before the expiration of the Lease, Prime Lessor shall have the right
to take over this Sublease and to have it become a direct lease with Prime
Lessor in which case Prime Lessor shall succeed to all the rights of Landlord
hereunder (it being understood that Prime Lessor shall elect upon the
commencement of any proceedings against Landlord to terminate the Lease whether
to have Tenant attorn or whether to join Tenant as a party defendant in which
case Tenant shall not be required to attorn). This Sublease shall be subject to
the condition that, notwithstanding anything to the contrary in this Sublease,
from and after the termination of the Lease, Tenant shall waive any right to
surrender possession or to terminate this Sublease by reason of termination of
the Lease and, at Prime Lessor's election made in accordance with the preceding
sentence, Tenant shall be bound to Prime Lessor for the balance of the term
hereof and shall attorn to and recognize Prime Lessor, as landlord, under all of
the then executory terms of this Sublease, except that Prime Lessor shall not
(i) be liable for any previous act, omission or negligence of Landlord, except
for services, repairs, maintenance and restoration Prime Lessor is obligated to
perform under the Lease, (ii) be subject to any counterclaim, defense or offset
not expressly provided for in this Sublease, which theretofore accrued to
Tenant, or (iii) be bound by any modification or amendment of this Sublease of
which Prime Lessor has not received notice or by any prepayment of more than one
month's rent and additional rent which shall be payable as provided in this
Sublease, unless such modification or prepayment shall have been approved in
writing by Prime Lessor to the extent required under this Sublease. Tenant shall
execute and deliver to Prime Lessor any instruments Prime Lessor may reasonably
request to

                                       5
<PAGE>

evidence and confirm such attornment. Tenant shall be deemed to have given a
waiver of subrogation of the type provided for in the Lease. Tenant represents
that it has read and is familiar with the terms of the Lease.

      9. Assignment and Subleasing. Notwithstanding anything contained in the
Lease to the contrary, Tenant shall not, by operation of law or otherwise,
assign, mortgage or encumber this Sublease, or sublet the Premises in whole or
in part or permit the Premises or any part thereof to be used by others;
provided, however, subject to the consent of Prime Lessor and the provisions set
forth in Article 45 of the Lease, Landlord shall not unreasonably withhold its
consent to a further subletting of the Premises if Prime Lessor has consented
thereto.

      10. No Services. Notwithstanding anything contained in this Sublease to
the contrary, Landlord shall have no obligation to (i) perform any services
under this Sublease (including, without limitation, the providing of electrical
energy), (ii) make any repairs or restorations, (iii) comply with any laws or
requirements of any governmental authorities, (iv) provide any insurance with
respect to the Building, the Premises or the improvements therein, (v) remove,
encapsulate or otherwise treat any asbestos-containing materials or other
hazardous materials located in the Premises and/or the Building, or (vi) take
any other action that Prime Lessor is obligated to provide, make, comply with or
take, or cause to be done, under the Lease (collectively, "Services") and the
only Services or rights to which Tenant is entitled hereunder, including,
without limitation, any right to repairs, elevator, water, utilities, heating
and air conditioning, are those to which Landlord is entitled as the tenant
under the Lease, and for all such services and rights, Tenant will look solely
to the Prime Lessor. Landlord hereunder assumes no liability for any covenants,
representations or warranties made by Prime Lessor under the Lease. Landlord
agrees to take all reasonable steps to assist Tenant as Tenant may from time to
time request, at Tenant's sole expense and without liability to Landlord, in
seeking such services and rights from the Prime Lessor, provided Tenant
indemnifies and reimburses Landlord as to any cost or expense incurred with
respect thereto. In no event, however, shall Landlord be required to commence or
cooperate with any litigation against Prime Lessor or any agent, employee or
affiliate thereof. Nothing contained herein shall be deemed a waiver of
Landlord's rights to receive Services from Prime Lessor. Landlord shall in no
event be liable to Tenant for any failure to render any of the Services, nor
shall any such failure entitle Tenant to any abatement or reduction in Fixed
Rent or Additional Rent payable hereunder or to any right to terminate this
Sublease.

      11. Broker. Tenant warrants and represents that it has dealt with no
broker in connection with this transaction except Cushman & Wakefield, Inc. and
Equis

                                       6
<PAGE>

Corporation (collectively, "Broker") and agrees to indemnify and hold Landlord
and Prime Lessor harmless from all costs, expenses and liability arising from
any claim for brokerage commission made by any other party claiming to act for
or on behalf of Tenant in this transaction. Tenant shall not be liable for
payment of the commission due to Broker in connection with this transaction
which commission shall be payable pursuant to a separate agreement.

      12. Holdover. Upon the expiration or other termination of the term of this
Sublease, Tenant shall quit and surrender the Premises as provided in the Lease.
In the event Tenant holds over at the expiration or earlier termination of this
Sublease without Landlord's and Prime Lessor's consent, it is understood and
agreed that, in addition to all other rights and remedies of Landlord and Prime
Lessor provided by law or by the terms of this Sublease (including, without
limitation, by the terms of the Lease as incorporated herein), Tenant shall pay
Landlord an amount equal to two times all Fixed Rent, Furniture Rent and
additional rent payable by Landlord as tenant under the Lease, calculated on a
monthly basis for each month, or portion thereof, that Tenant remains in
possession after the expiration or other termination of the term of this
Sublease. Nothing contained herein shall be deemed a consent by Landlord or
Prime Lessor to the holding over by Tenant, nor a waiver of any other remedy
which Landlord or Prime Lessor may have available to it. Tenant's obligations
under this Section 12 shall survive the termination of this Sublease.

      13. Insurance. Tenant shall, at its sole cost and expense and for the term
of this Sublease, maintain all property, liability and other insurance required
by Article 49 of the Lease in accordance therewith. On or prior to the
Commencement Date, Tenant shall deliver to Landlord copies of such insurance
policies, together with certificates of insurance naming Landlord, Prime Lessor
and such other parties as are required to be named pursuant to the Lease as
additional insureds.

      14. As Is. Tenant agrees to accept the Premises "as is," at the time
possession thereof is delivered (including without limitation, all furniture,
fixtures and equipment) to Tenant free of any occupancy and Landlord shall have
no obligation to perform any alterations, work or repairs on behalf of Tenant or
contribute any sums toward same; provided, that the Premises shall be delivered
in broom clean condition. Tenant acknowledges that no representations with
respect to the condition of the Premise, or with respect to the condition of any
fixtures, equipment or furnishings therein contained, have been made to it.
Tenant shall not perform any work or alterations in preparing the Premises for
occupancy, or otherwise during the term of this Sublease, without the prior
written approval of both Landlord and Prime Lessor. If so

                                       7
<PAGE>

approved, all such work and alterations shall be performed in full compliance
with the applicable provisions of the Lease.

      15. Merger. All prior understandings and agreements between the parties
are merged within this Sublease, which alone fully and completely sets forth the
understanding of the parties. This Sublease may not be changed or terminated
orally or in any manner other than by an agreement in writing and signed by the
party against whom enforcement of the change or termination is sought.

      16. Notices. Any notice or demand which either party may or must give to
the other hereunder shall be in writing and given in accordance with Section 52
of the Lease, addressed as follows:

            If to the Landlord: Playboy Enterprises International, Inc.
                                680 North Lake Shore Drive
                                Chicago, Illinois 60611
                                Attn: Associate General Counsel

            with copies to:     Playboy Enterprises International, Inc.
                                730 Fifth Avenue
                                New York, New York 10019
                                Attn: Director of Administrative Services

                                Fried, Frank, Harris, Shriver & Jacobson
                                One New York Plaza
                                New York, New York 10004
                                Attn: Jonathan L. Mechanic, Esq.

            If to Tenant:       Concentra Managed Care Services, Inc.
                                c/o Real Estate
                                5080 Spectrum, Suite #400W
                                Addison, TX 75001

            with copies to:     Concentra Managed Care Services, Inc.
                                730 Fifth Avenue
                                New York, New York 10019
                                Attn: Office Manager

                                       8
<PAGE>

                                Concentra Operating Corp.
                                5080 Spectrum, Suite #400W
                                Addison, TX 75001
                                Attention: General Counsel

Either party may, by notice in writing, direct that future notices or demands by
sent to a different address.

      17. Consents. This Sublease is subject to, and shall become effective
upon, the written consent of the Prime Lessor in accordance with all applicable
terms of the Lease. Tenant agrees to furnish to Landlord such information as may
be reasonably necessary to obtain such consent, and to enter into such
agreements among the Prime Lessor, Landlord and Tenant as the Prime Lessor may
reasonably require pursuant to the Lease in connection with giving its consent
to this Sublease including, without limitation, an agreement to attorn to the
Prime Lessor as landlord in the event of a termination of this Sublease. Any
delay in the Prime Lessor's furnishing such consent shall not postpone or extend
the Expiration Date. In the event such consent is denied, this Sublease shall
thereupon terminate and be of no further force or effect. In the event such
consent is not obtained on or prior to the 60th day following the date hereof,
then either party shall have the right to give written notice canceling this
Sublease. Landlord shall request the Prime Lessor's consent with reasonable
promptness. Furthermore, upon receiving such written consent from the Prime
Lessor, Landlord shall promptly deliver a copy thereof to Tenant.

      18. Delivery of Possession. (a) Notwithstanding anything herein contained
to the contrary, if Landlord is unable to deliver to Tenant possession of the
Premises, or any part thereof, on the date set forth in Section 1 hereof as the
Commencement Date because of a fire or casualty therein or for any reason
whatsoever, (i) Landlord shall not be subject to any liability for failure to
deliver possession on said Commencement Date, (ii) the validity of this Sublease
shall not be impaired under such circumstances, (iii) the same shall not be
construed in any wise to extend the term of this Sublease and (iv) the term of
this Sublease shall commence on, and the Commencement Date shall be, the date on
which Landlord delivers possession of the Premises to Tenant.

      (b) The provisions of this Section are intended to constitute "an express
provision to the contrary" within the meaning of Section 223-a of the New York
Real Property Law.

      19. Damage by Fire or Other Cause; Condemnation. Notwithstanding any
contrary provision of the Lease incorporated herein by reference, Tenant shall
have

                                       9
<PAGE>

no right to (a) terminate this Sublease as to all or any part of the Premises by
reason of a casualty on condemnation or (b) an abatement of Fixed Rent or
Additional Rent by reason of a casualty or condemnation, unless Landlord is
entitled to a corresponding abatement with respect to its corresponding
obligation under the Lease. The provisions of this Section 19 shall be deemed an
express agreement governing any case of damage or destruction of the Subleased
Premises by fire or other casualty, and Section 227 of the Real Property Law of
the State of New York, providing for such a contingency in the
absence of an express agreement, and any other law of like import, now or
hereafter in force, shall have no application in such case.

      20. Security. Tenant has deposited with Landlord the sum of $114,925.60
(the "Security Deposit") as security for the full and faithful performance and
observance by Tenant of Tenant's covenants and obligations under this Sublease.
If Tenant defaults in the full and prompt payment and performance of any of
Tenant's covenants and obligations under this Sublease, including, but not
limited to, the payment of Fixed Rent, Furniture Rent and Additional Rent,
Landlord may, but shall not be required to, use, apply or retain the whole or
any part of the Security Deposit and the interest accrued thereon, if any, to
the extent required for the payment of any Fixed Rent, Furniture Rent and
Additional Rent or any other sums as to which Tenant is in default or for any
sum which Landlord may expend or may be required to expend by reason of Tenant's
default in respect of any of the terms, covenants and conditions of this
Sublease, including, but not limited to, any damages or deficiency in the
reletting of the Premises, whether such damages or deficiency accrue before or
after summary proceedings or other re-entry by Landlord. If Landlord shall so
use, apply or retain the whole or any part of the Security Deposit or the
interest accrued thereon, if any, Tenant shall upon demand immediately deposit
with Landlord a sum equal to the amount so used, applied or retained, as
security as aforesaid failing which Landlord shall have the same rights and
remedies as for the non-payment of Fixed Rent or Furniture Rent beyond the
applicable grace period. If Tenant shall fully and faithfully comply with all of
Tenant's covenants and obligations under this Sublease, the Security Deposit or
any balance thereof, with the interest thereon, if any, to which Tenant is
entitled, shall be returned or paid over to Tenant after the date fixed as the
end of this Sublease and after delivery to Landlord of entire possession of the
Premises. Tenant shall not assign or encumber or attempt to assign or encumber
the Security Deposit or any interest thereon to which Tenant is entitled, and
neither Landlord nor its successors or assigns shall be bound by any such
assignment, encumbrance, attempted assignment or attempted encumbrance.

      21. Authority. To induce Landlord to enter into this Sublease, Tenant
hereby represents, warrants and covenants to Landlord that (i) Tenant is a duly
formed

                                       10
<PAGE>

and validly existing corporation with full power and authority to enter into
this Sublease and to perform its obligations hereunder in accordance with its
terms and (ii) this Sublease has been duly authorized, executed and delivered by
Tenant and constitutes the legal, valid and binding obligation of Tenant.

      22. Leasing of Furniture. Landlord hereby leases to Tenant and Tenant
hereby hires from Tenant the furniture located in the Premises (the
"Furniture"), as more particularly described on Exhibit B attached hereto and
made a part hereof, for Tenant's use in the Premises. Tenant shall accept
Furniture in its "as-is" and "where is" condition, and acknowledges that
Landlord has not made any representations or warranties as to the condition or
fitness of the Furniture for Tenant's use. Tenant covenants and agrees to pay to
Landlord, in consideration of Landlord leasing the Furniture to Tenant, a fixed
basic rent of $93,120.00 per annum ($7,760.00 per month) (the "Furniture Rent"),
for the period commencing on the Commencement Date to and including the
Expiration Date. The Furniture shall be leased to Tenant in accordance with all
of the terms and conditions of this Sublease throughout the term hereof and
Tenant shall maintain the Furniture in good order and repair. Notwithstanding
anything to the contrary contained in this Sublease, the Furniture (i) shall
remain the property of Landlord for all purposes, (ii) shall not be removed from
the Premises or altered in any respect, and (iii) shall be returned to Landlord
on the Expiration Date in its "as-is" condition as of the Commencement Date,
reasonable wear and tear excepted. Tenant shall indemnify Landlord for all costs
and expenses incurred by Landlord as a result of any damage or loss, for any
reason whatsoever, to the Furniture. Tenant's obligations under this Section 22
shall survive the termination of this Sublease.

                                       11
<PAGE>

      IN WITNESS WHEREOF, Landlord and Tenant have executed this Sublease as of
the day and year first above written.

                                        PLAYBOY ENTERPRISES INTERNATIONAL, INC.

                                        By: /s/ Linda Havard
                                           ----------------------------------
                                           Name:  Linda Havard
                                           Title: CFO

                                        CONCENTRA MANAGED CARE SERVICES, INC.

                                        By: /s/ Richard A. Parr II
                                           ----------------------------------
                                           Name:  Richard A. Parr II
                                           Title: Executive Vice President

                                       12
<PAGE>

                                    EXHIBIT 1

                                    Premises

This floor plan is annexed to and made a part of this Lease solely to indicate
the Premises by outlining and diagonal marking. All areas, conditions,
dimensions and locations are approximate.

                              [FLOOR PLAN GRAPHIC]

<PAGE>

                                    EXHIBIT 2

                                    Furniture

45 each      Steelcase Desk Chairs -- Russet

46 each      Chair Mats

12 each      Knoll Studio JR Chair without arms -- Maple finish

6 each       Knoll Studio JR chair with arms -- Maple finish

16 each      Herman Miller Eames Aluminum Management chair -- Mulberry Crepe
             fabric

3 each       42" round Bretford Conference Table with base -- Saffron laminate
             top -- cappuccino paint base

1 each       60" round Bretford Conference Table with base -- Saffron laminate
             cappuccino paint base

1 each       42/54" Diameter x 120" long Boat Shaped powered conference table
             with base -- Saffron laminate top -- cappuccino paint base

4 each       Allsteel 5400 series 5 high 42" x 18" x 64-3/4" lateral file
             cabinet with lock -- Metallic Beige

4 each       Allsteel 5400 series 3 high 30" x 18" x 39-3/4" lateral file
             cabinet with lock -- Metallic Beige

4 each       Allsteel 5400 series 3 high 36" x 18" x 39-3/4" lateral file
             cabinet with lock -- Metallic Beige

4 each       Allsteel 5400 series 3 high 42" x 18" x 39-3/4" lateral file
             cabinet with lock -- Metallic Beige

1 lot        Knoll Morrison components to make up 8 office configurations and
             38 workstation configurations - configurations consist of
             panels, worksurfaces, file pedestals, overheads storage
             bins and fabric panels

                                       14

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