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                                                                   EXHIBIT 10.42

                              EMPLOYMENT AGREEMENT

         THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT ("Agreement") is made
and entered into as of May 27, 1999, by and between ARDEN REALTY LIMITED
PARTNERSHIP, a Maryland limited partnership (the "Company") and RANDY J. NOBLITT
("Executive").

1.       EMPLOYMENT

         The Company hereby employs Executive and Executive hereby accepts
employment upon the terms and conditions set forth below.

2.       TERM AND RENEWAL

         2.1. Term. The term of this Agreement shall commence on May 27, 1999
(the "Effective Date"), and shall continue to December 31, 2000 (the "Original
Employment Term"), on the terms and conditions set forth below, unless sooner
terminated as provided in Section 5.

         2.2. Extension. Following the expiration of the Original Employment
Term and provided that this Agreement has not been terminated pursuant to
Section 5, and every year thereafter, the Agreement shall be automatically
renewed for an additional 12-month period, effective on January 1, 2001 and each
anniversary thereof; provided, that if a Change in Control (as defined in
Section 5.6), occurs during the original or extended term of this Agreement,
this Agreement shall continue in effect for a period not less than twelve (12)
months beyond the month in which such Change in Control occurred.

3.       COMPENSATION

         3.1. Base Compensation. For the services to be rendered by Executive
under this Agreement, Executive shall be entitled to receive, commencing as of
the Effective Date, an annual base compensation ("Base Compensation") of
$170,000 payable in substantially equal semi-monthly installments. The Base
Compensation shall be reviewed and adjusted annually as determined by the
Compensation Committee (the "Compensation Committee") of the Board of Directors
(the "Board") of the Company.

         3.2. Bonus Compensation. The Compensation Committee shall review
Executive's performance at least annually during each year of the Original
Employment Term and cause the Company to award Executive a cash bonus which the
Compensation Committee determines in its sole and absolute discretion.

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         3.3. "Gross-Up" of Compensation.

                  (a)      280G "Gross-Up".

                           (i) Anything in this Agreement to the contrary
notwithstanding, if it shall be determined that any payment or distribution to
Executive or for his benefit (whether paid or payable or distributed or
distributable) pursuant to the terms of this Agreement or otherwise (the
"Payment") would be subject to the excise tax imposed by section 4999 of the
Internal Revenue Code of 1986, as amended (the "Code") (the "Excise Tax"), then
Executive shall be entitled to receive from the Company an additional payment
(the "Gross-Up Payment") in an amount such that the net amount of the Payment
and the Gross-Up Payment retained by Executive after the calculation and
deduction of all Excise Taxes (including any interest or penalties imposed with
respect to such taxes) on the Payment and all federal, state and local income
tax, employment tax and Excise Tax (including any interest or penalties imposed
with respect to such taxes) on the Gross-Up Payment provided for in this Section
3.3(a) and taking into account any lost or reduced tax deductions on account of
the Gross-Up Payment, shall be equal to the Payment;

                           (ii) All determinations required to be made under
this Section 3.3(a), including whether and when the Gross-Up Payment is required
and the amount of such Gross-Up Payment, and the assumptions to be used in
arriving at such determinations shall be made by the Accountants (as defined
below) which shall provide Executive and the Company with detailed supporting
calculations with respect to such Gross-Up Payment within fifteen (15) business
days of the receipt of notice from Executive or the Company that Executive has
received or will receive a Payment. For the purposes of this Section 3.3(a), the
"Accountants" shall mean the Company's independent certified public accountants
serving immediately prior to the Change in Control (as defined in Section 5.6).
In the event that the Accountants are also serving as accountant or auditor for
the individual, entity or group effecting the Change in Control, Executive shall
appoint another nationally recognized public accounting firm to make the
determinations required hereunder (which accounting firm shall then be referred
to as the Accountants hereunder). All fees and expenses of the Accountants shall
be borne solely by the Company. For the purposes of determining whether any of
the Payments will be subject to the Excise Tax and the amount of such Excise
Tax, such Payments will be treated as "parachute payments" within the meaning of
section 280G of the Code, and all "parachute payments" in excess of the "base
amount" (as defined under section 280G(b)(3) of the Code) shall be treated as
subject to the Excise Tax, unless and except to the extent that in the opinion
of the Accountants such Payments (in whole or in part) either do not constitute
"parachute payments" or represent reasonable compensation for services actually
rendered (within the meaning of section 280G(b)(4) of the Code) in excess of the
"base amount," or such "parachute payments" are otherwise not subject to such
Excise Tax. For purposes of determining the amount of the Gross-Up Payment,

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Executive shall be deemed to pay Federal income taxes at the highest applicable
marginal rate of federal income taxation for the calendar year in which the
Gross-Up Payment is to be made and to pay any applicable state and local income
taxes at the highest applicable marginal rate of taxation for the calendar year
in which the Gross-Up Payment is to be made, net of the maximum reduction in
federal income taxes which could be obtained from the deduction of such state or
local taxes if paid in such year (determined without regard to limitations on
deductions based upon the amount of Executive's adjusted gross income), and to
have otherwise allowable deductions for federal, state and local income tax
purposes at least equal to those disallowed because of the inclusion of the
Gross-Up Payment in Executive's adjusted gross income. To the extent
practicable, any Gross-Up Payment with respect to any Payment shall be paid by
the Company at the time Executive is entitled to receive the Payment and in no
event will any Gross-Up Payment be paid later than five days after the receipt
by Executive of the Accountant's determination. Any determination by the
Accountants shall be binding upon the Company and Executive. As a result of
uncertainty in the application of section 4999 of the Code at the time of the
initial determination by the Accountants hereunder, it is possible that the
Gross-Up Payment made will have been an amount less than the Company should have
paid pursuant to this Section 3.3(a) (the "Underpayment"). In the event that the
Company exhausts its remedies pursuant to Section 3.3(a)(ii) and Executive is
required to make a payment of any Excise Tax, the Underpayment shall be promptly
paid by the Company to or for Executive's benefit; and

                           (iii) Executive shall notify the Company in writing
of any claim by the Internal Revenue Service that, if successful, would require
the payment by the Company of the Gross-Up Payment. Such notification shall be
given as soon as practicable after Executive is informed in writing of such
claim and shall apprise the Company of the nature of such claim and the date on
which such claim is requested to be paid. Executive shall not pay such claim
prior to the expiration of the 30-day period following the date on which
Executive gives such notice to the Company (or such shorter period ending on the
date that any payment of taxes, interest and/or penalties with respect to such
claim is due). If the Company notifies Executive in writing prior to the
expiration of such period that it desires to contest such claim, Executive
shall:

                                    (A) give the Company any information
                  reasonably requested by the Company relating to such claim;

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

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

                                    (D) permit the Company to participate in any
                  proceedings relating to such claims;

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provided, however, that the Company shall bear and pay directly all costs and
expenses (including additional interest and penalties) incurred in connection
with such contest and shall indemnify Executive for and hold Executive harmless
from, on an after-tax basis, any Excise Tax or income tax (including interest
and penalties with respect thereto) imposed as a result of such representation
and payment of all related costs and expenses. Without limiting the foregoing
provisions of this Section 3.3(a), the Company shall control all proceedings
taken in connection with such contest and, at its sole option, may pursue or
forgo any and all administrative appeals, proceedings, hearings and conferences
with the taxing authority in respect of such claim and may, at its sole option,
either direct Executive to pay the tax claimed and sue for a refund or contest
the claim in any permissible manner, and Executive agrees to prosecute such
contest to a determination before any administrative tribunal, in a court of
initial jurisdiction and in one or more appellate courts, as the Company shall
determine; provided, however, that if the Company directs Executive to pay such
claim and sue for a refund, the Company shall advance the amount of such payment
to Executive, on an interest-free basis, and shall indemnify Executive for and
hold Executive harmless from, on an after-tax basis, any Excise Tax or income
tax (including interest or penalties with respect thereto) imposed with respect
to such advance or with respect to any imputed income with respect to such
advance (including as a result of any forgiveness by the Company of such
advance); provided, further, that any extension of the statute of limitations
relating to the payment of taxes for the taxable year of Executive with respect
to which such contested amount is claimed to be due is limited solely to such
contested amount. Furthermore, the Company's control of the contest shall be
limited to issues with respect to which a Gross-Up Payment would be payable
hereunder and Executive shall be entitled to settle or contest, as the case may
be, any other issue raised by the Internal Revenue Service or any other taxing
authority.

         3.4. Benefits.

                  (a) Medical Insurance. The Company shall provide to Executive,
Executive's spouse and children, such health, dental and optical insurance as
the Company may from time to time make available to its other executive
employees.

                  (b) Life and Disability Insurance. The Company shall provide
Executive such disability and/or life insurance as the Company in its sole
discretion may from time to time make available to its other executive
employees.

                  (c) Pension Plans, Etc. The Executive shall be entitled to
participate in all pension, 401(k) and other employee plans and benefits
established by the Company on at least the same terms as the Company's other
executive employees.

         3.5. Method of Payment.  The monetary compensation payable and any
benefits due to Executive hereunder may be paid or provided in whole or in part,
from time to time, by the Company and/or its respective subsidiaries and
affiliates, but shall at all times remain the responsibility of the Company.

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4.       POSITION AND DUTIES

         4.1 Position. Executive shall serve as Senior Vice President-Finance or
such other position or positions to which the Company, in its sole and absolute
discretion, assigns Executive.

         4.2 Devotion of Time and Effort. Executive shall use Executive's good
faith best efforts and judgment in performing Executive's duties as required
hereunder and to act in the best interests of the Company. Executive shall
devote such time, attention and energies to the business of the Company as are
reasonably necessary to satisfy Executive's required responsibilities and duties
hereunder.

         4.1. Other Activities. Executive may engage in other activities for
Executive's own account while employed hereunder, including without limitation
charitable, community and other business activities, provided that such other
activities do not materially interfere with the performance of Executive's
duties hereunder.

         4.2. Vacation.  It is understood and agreed that Executive shall be
entitled to three (3) weeks vacation per year. During such vacation periods,
Executive shall not be relieved of Executive's duties under this Agreement and
there will be no abatement or reduction of Executive's compensation hereunder.

         4.3. Business Expenses. The Company shall promptly, but in no event
later than thirty days after submission of a claim of expenditure, reimburse
Executive for all reasonable business expenses including, without limitation,
business seminar fees, professional association dues, bar dues and other
reasonable entertainment expenses which have been given approval in advance and
are incurred by Executive in connection with the business of the Company and/or
its respective subsidiaries and affiliates, upon presentation to the Company of
written receipts for such expenses. Such reimbursement shall also include, but
not be limited to, reimbursement for all reasonable travel expenses, including
all airfare, hotel and rental car expenses, incurred by Executive in traveling
in connection with the business of the Company.

         4.4. Company's Obligations. The Company shall provide Executive with
any and all necessary or appropriate current financial information and access to
current information and records regarding all material transactions involving
the Company and/or its representative subsidiaries and affiliates, including but
not limited to acquisition of assets, personnel contracts, dispositions of
assets, service agreements and registration statements or other state or federal
filings or disclosures, reasonably necessary for Executive to carry out
Executive's duties and responsibilities hereunder. In addition, the Company
agrees to provide Executive, as a condition to Executive's services hereunder,
such staff, equipment and office space as is reasonably necessary for Executive
to perform Executive's duties hereunder.

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5.       TERMINATION

         5.1. By the Company Without Cause. The Company may terminate this
Agreement without "cause" (as hereinafter defined) at any time following the
Effective Date, provided that the Company first delivers to Executive the
Company's written election to terminate this Agreement at least 90 days prior to
the effective date of termination.

         5.2. Severance Payment.

                  (a) Amount. In the event the Company terminates Executive's
services hereunder pursuant to Section 5.1, or Executive terminates his
employment hereunder pursuant to Section 5.4 or 5.6, Executive shall continue to
render services to the Company pursuant to this Agreement until the date of
termination and shall continue to receive compensation, as provided hereunder,
through the termination date. In addition to other compensation payable to
Executive for services rendered through the termination date, the Company shall
pay Executive no later than the date of such termination, as a single severance
payment, an amount equal to the sum of: (i) three times Executive's average
annual Base Compensation, paid hereunder for the preceding twenty-four month
period (or, if Executive has been employed less than twenty-four months, the
average annual Base Compensation for the period employed) plus (ii) an amount
equal to three times Executive's most recent annual bonus from the Company
(collectively, the "Severance Amount"). In addition to payment of the Severance
Amount, any unvested stock options or restricted stock held by Executive shall
become fully vested as of the date of termination.

                  (b) Benefits. In the event Executive's employment hereunder is
terminated by the Company without cause pursuant to Section 5.1 or by Executive
pursuant to Section 5.4 or 5.6, then in addition to paying Executive the
Severance Amount and providing for the full vesting of unvested stock options or
restricted stock held by Executive, the Company shall pay the COBRA premium for
health care coverage for Executive and Executive's spouse and children, as
applicable and to the extent eligible, for the lesser of 18 months commencing on
the date of such termination (the "Severance Benefits") or the date on which
Executive becomes eligible for health care coverage under the plan of any other
employer.

                  (c) To be eligible to receive any payments under this Section
5.2, Executive must execute and deliver (and not revoke, if revocation period is
required by law) a release of claims in a form acceptable to the Company.

         5.3. By The Company For Cause. The Company may terminate Executive for
cause at any time, upon written notice to Executive. For purposes of this
Agreement, "cause" shall mean:

                  (a) Executive's conviction for commission of a felony or a
crime involving moral turpitude;

                  (b) Executive's willful commission of any act of theft,
embezzlement or misappropriation against the Company which, in any such case, is
materially and demonstrably injurious to the Company;

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                  (c) Executive's willful and continued failure to substantially
perform Executive's duties hereunder (other than such failure resulting from
Executive's incapacity due to physical or mental illness), which failure is not
remedied within a reasonable time after written demand for substantial
performance is delivered by the Company which specifically identifies the manner
in which the Company believes that Executive has not substantially performed
Executive's duties; or

                  (d) Executive's death or Disability (as hereinafter defined).

         For purposes of this Section 5.3, no act, or failure to act, on
Executive's part shall be deemed "willful" unless done, or omitted to be done,
by Executive not in good faith.

         In the event Executive is terminated for cause pursuant to this Section
5.3, Executive shall have the right to receive Executive's compensation as
otherwise provided under this Agreement through the effective date of
termination. Executive shall have no further right to receive compensation or
other consideration from the Company, or have any other remedy whatsoever
against the Company, as a result of this Agreement or the termination of
Executive pursuant to this Section 5.3, except as set forth below with respect
to a termination due to Executive's Disability.

         In the event Executive is terminated by reason of Executive's death or
Disability, the Company shall immediately pay Executive (or his estate) the
Severance Amount and shall pay the COBRA premium for health care coverage for
Executive's spouse and children, as applicable and to the extent eligible, for a
period of 18 months commencing on the date of such termination. Said payments
shall be in addition to any disability insurance payments to which Executive is
otherwise entitled and any other compensation earned by Executive hereunder. In
addition, any unvested stock options or restricted stock held by Executive shall
become fully vested as of the date of termination. For purposes of this
Agreement, the term "Disability" shall mean a physical or mental incapacity as a
result of which Executive becomes unable to continue the proper performance of
Executive's duties hereunder for six consecutive calendar months or for shorter
periods aggregating 180 business days in any 12 month period, but only to the
extent that such definition does not violate the Americans with Disabilities
Act.

         5.4. By Executive For Good Reason. Executive may terminate this
Agreement for good reason upon at least 10 days prior written notice to the
Company. For purposes of this Agreement, "good reason" shall mean:

                  (a) the Company's material breach of any of its respective
obligations hereunder and either such breach is incurable or, if curable, has
not been cured within fifteen (15) days following receipt of written notice by
Executive to the Company of such breach by the Company;

         In the event that Executive terminates this Agreement for good reason
pursuant to this Section 5.4, Executive shall have the right to receive
Executive's compensation as provided hereunder through the effective date of
termination and shall also have the same rights and remedies against the Company
as Executive would have had if the Company had terminated

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Executive's employment without cause pursuant to Section 5.1 (including the
right to receive the Severance Amount payable and the Severance Benefits to be
provided under Section 5.2).

         5.5. Executive's Voluntary Termination. Executive may, at any time,
terminate this Agreement without good reason upon written notice delivered to
the Company at least ninety (90) days prior to the effective date of
termination. In the event of such voluntary termination of this Agreement by
Executive: (i) Executive shall have the right to receive Executive's
compensation as provided hereunder through the effective date of termination,
and (ii) the Company, on the one hand, and Executive, on the other hand, shall
not have any further right or remedy against one another except as provided in
Sections 6 and 7 hereof which shall remain in full force and effect.

         5.6. Change in Control. Executive may terminate this Agreement, upon at
least ten (10) days' prior written notice to the Company, at any time within
twelve (12) months after a "change in control" (as hereinafter defined) of the
Company. In the event Executive terminates this Agreement within twelve (12)
months after a change in control pursuant to this Section 5.6, (i) Executive
shall continue to render services pursuant hereto and shall continue to receive
compensation, as provided hereunder, through the termination date, (ii) the
Company shall pay Executive no later than the date of such termination, as a
single severance payment, an amount equal to the Severance Amount, and (iii)
following such termination, the Company shall provide the Severance Benefits as
required by Section 5.2. For purposes of this Agreement, a "change in control"
shall mean the occurrence of any of the following events:

                  (a) the individuals constituting the Board as of the Effective
Date (the "Incumbent Board") cease for any reason to constitute at least
two-thirds (2/3rds) of the Board; provided, however, that if the election, or
nomination for election by the Company's stockholders, of any new director was
approved by a vote of at least two-thirds (2/3rds) of the Incumbent Board, such
new director shall be considered a member of the Incumbent Board;

                  (b) an acquisition of any voting securities of the Company
(the "Voting Securities") by any "person" (as the term "person" is used for
purposes of Section 13(d) or Section 14(d) of the Securities Exchange Act of
1934, as amended (the "1934 Act")) immediately after which such person has
"beneficial ownership" (within the meaning of Rule 13d-3 promulgated under the
1934 Act) ("Beneficial Ownership") of 20% or more of the combined voting power
of the Company's then outstanding Voting Securities; or

                  (c) approval by the stockholders of the Company of:

                           (i) a merger, consolidation, share exchange or
reorganization involving the Company, unless

                                    (A) the stockholders of the Company,
                  immediately before such merger, consolidation, share exchange
                  or reorganization, own, directly or indirectly immediately
                  following such merger, consolidation, share exchange or
                  reorganization, at least 80% of the combined voting power of
                  the outstanding voting securities of the corporation that is
                  the successor in such merger,

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                  consolidation, share exchange or reorganization (the
                  "Surviving Company") in substantially the same proportion as
                  their ownership of the Voting Securities immediately before
                  such merger, consolidation, share exchange or reorganization;
                  and

                                    (B) the individuals who were members of the
                  Incumbent Board immediately prior to the execution of the
                  agreement providing for such merger, consolidation, share
                  exchange or reorganization constitute at least two-thirds
                  (2/3rds) of the members of the board of directors of the
                  Surviving Company;

                           (ii) a complete liquidation or dissolution of the
Company; or

                           (iii) an agreement for the sale or other disposition
of all or substantially all of the assets of the Company.

                  (d) any Person is or becomes the Beneficial Owner of
securities of the Company representing ten percent (10%) or more of the combined
voting power of the Company's then outstanding securities and (A) the identity
of the Chief Executive Officer of the Company is changed during the period
beginning sixty (60) days before the attainment of the ten percent (10%)
beneficial ownership and ending two (2) years thereafter, or (B) individuals
constituting at least one-third (1/3) of the members of the Board at the
beginning of such period shall leave the Board during the period beginning sixty
(60) days before the attainment of the ten percent (10%) beneficial ownership
and ending two (2) years thereafter.

6.       CONFIDENTIALITY

         During the term of Executive's employment under this Agreement,
Executive will have access to and become acquainted with various information
relating to the Company's business operations, marketing data, business plans,
strategies, employees, contracts, financial records and accounts, projections
and budgets, and similar information. Executive agrees that to the extent such
information is not generally available to the public and gives the Company an
advantage over competitors who do not know of or use such information, such
information and documents constitute "trade secrets" of the Company. Executive
further agrees that all such information and documents relating to the business
of the Company, whether they are prepared by Executive or come into Executive's
possession in any other way, are owned by the Company and shall remain the
exclusive property of the Company. Executive shall not misuse, misappropriate or
disclose any trade secrets of the Company, directly or indirectly, or use them
for Executive's own benefit, either during the term of this Agreement or at any
time thereafter, except as may be necessary or appropriate in the course of
Executive's employment with the Company, unless such action is either previously
agreed to in writing by the Company or required by law.

7.       NON-SOLICITATION

         For a period of one (1) year following the date Executive's employment
hereunder is terminated, Executive shall not solicit or induce any of the
Company's employees, agents or

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independent contractors to end their relationship with the Company, or recruit,
hire or otherwise induce any such person to perform services for Executive, or
any other person, firm or company.

8.       ARBITRATION AGREEMENT

         8.1. In the event of any issue or dispute arising between Executive and
the Company, its officers, directors, managers, supervisors and/or employees
(except for claims for workers' compensation, unemployment insurance, and any
matter within the jurisdiction of the California Labor Commissioner), the matter
shall be submitted to and resolved by final and binding arbitration as provided
for by the California Arbitration Act, California Code of Civil Procedure,
Section 1280, et. seq. Mandatory arbitration will not preclude Executive from
filing an administrative charge or complaint of discrimination or harassment
with either the Equal Employment Opportunity Commission or the California
Department of Fair Employment and Housing. Except as provided in this section,
ARBITRATION SHALL BE THE EXCLUSIVE METHOD FOR RESOLVING ANY EMPLOYMENT RELATED
DISPUTE, AND BOTH THE COMPANY, AND THE EXECUTIVE ARE GIVING UP ANY RIGHT THAT
THEY MIGHT OTHERWISE HAVE TO HAVE A JUDGE OR JURY DECIDE ANY SUCH EMPLOYMENT
RELATED DISPUTE; provided, however, that either the Executive or the Company,
may request equitable relief, including but not limited to injunctive relief,
from a court of competent jurisdiction.

         8.2. The claims which are to be arbitrated under this Agreement
include, but are not limited to, tort claims, bad faith claims, contract claims,
wage claims, benefit claims, demands, liabilities, debts, accounts, obligations,
damages, compensatory damages, punitive damages, liquidated damages, costs,
expenses, actions and causes of action arising out of or in connection with the
employment relationship with the Company, the termination of that relationship,
and/or post-employment retaliation and defamation (including but not limited to
any claims for wrongful discharge or breach of the covenant of good faith and
fair dealing), any and all federal and state civil rights laws, ordinances,
regulations or orders, based on charges of discrimination or harassment on
account of race, color, religion, sex, sexual orientation, age, citizenship,
national origin, mental or physical disability, medical condition, marital
status, pregnancy or any other discrimination prohibited by such laws,
ordinances, regulations or orders (including but not limited to Title VII of the
Civil Rights Act of 1964, as amended, 42 USC Section 2000, et seq.; Americans
with Disabilities Act; Civil Rights Act of 1866, and Civil Rights Act of 1991;
42 USC Section 1981, et seq.; Age Discrimination in Employment Act, as amended,
29 USC Section 621, et seq.; Equal Pay Act, as amended, 29 USC Section 206(d);
regulations of the Office of Federal Contract Compliance, 41 CFR Section 60, et
seq.; and the California Fair Employment and Housing Act, California Government
Code Section 12940, et seq.).

         8.3. If the Executive or the Company does not make a written request
for arbitration within the limitations period applicable to a claim under
applicable federal or state law, that party will have waived its right to raise
that claim, in any forum, arising out of that issue or dispute.

         8.4. The Executive and the Company will select an arbitrator by mutual
agreement. If the Executive and the Company are unable to agree on a neutral
arbitrator, either party may elect to obtain a list of arbitrators from the
Alternative Dispute Resolution Service. The Executive and

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the Company will alternately strike names from the list, with the Executive
striking the first name, until only one name remains. The remaining person shall
be the arbitrator.

         8.5. Arbitration proceedings will be held in California at a location
mutually convenient to the Executive and the Company.

         8.6. The parties retain the rights to conduct all discovery as provided
for in the California Code of Civil Procedure, and the arbitrator shall have the
power to decide any discovery disputes between the parties.

         8.7. The arbitrator shall entertain motions by either party for summary
disposition as provided for by applicable state law.

         8.8. The arbitrator shall conduct a hearing in a manner to be mutually
agreed upon by the Executive and the Company, or by the arbitrator if the
parties cannot agree, provided, however, that the parties shall have the
opportunity to call witnesses under oath, and to examine and cross examine all
witnesses who appear at the hearing.

         8.9. Within thirty (30) days following the hearing and the submission
of the matter to the arbitrator, the arbitrator shall issue a written opinion
and award which shall be signed and dated. The arbitrator's award shall decide
all issues submitted by the parties, and the arbitrator may not decide any issue
not submitted. The arbitrator shall be permitted to award only those remedies in
law or equity which are requested by the parties and allowed by law.

         8.10 The cost of the arbitrator and other incidental costs of
arbitration, including the cost of a court reporter, shall be equally shared
between the Executive and the Company, unless the arbitrator determines that
this would cause an undue hardship to the Executive, in which case the entire
cost shall be borne by the Company. The Executive and the Company shall each
bear their own costs for legal representation in any arbitration proceeding,
provided however, that the arbitrator shall have the authority to require either
party to pay the fee for the other party's representation during the
arbitration, as is otherwise permitted under federal or state law, as a part of
any remedy that may be ordered.

9.       INDEMNIFICATION

         To the fullest extent permitted under applicable law, the Company shall
indemnify, defend and hold Executive harmless from and against any and all
causes of action, claims, demands, liabilities, damages, costs and expenses of
any nature whatsoever (collectively, "Damages") directly or indirectly arising
out of or relating to Executive discharging Executive's duties hereunder on
behalf of the Company and/or its respective subsidiaries and affiliates, so

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long as Executive acted in good faith within the course and scope of Executive's
duties with respect to the matter giving rise to the claim or Damages for which
Executive seeks indemnification.

10.      GENERAL PROVISIONS

         10.1. Assignment; Binding Effect. Neither the Company or Executive may
assign, delegate or otherwise transfer this Agreement or any of their respective
rights or obligations hereunder without the prior written consent of the other
party. Any attempted prohibited assignment or delegation shall be void. This
Agreement shall be binding upon and inure to the benefit of any permitted
successors or assigns of the parties and the heirs, executors, administrators
and/or personal representatives of Executive.

         10.2. Notices. All notices, requests, demands and other communications
that are required or may be given under this Agreement shall be in writing and
shall be deemed to have been duly given when received if personally delivered;
when transmitted if transmitted by telecopy, electronic or digital transmission
method with electronic confirmation of receipt; the day after it is sent, if
sent for next-day delivery to a domestic address by recognized overnight
delivery service (e.g., FedEx); and upon receipt, if sent by certified or
registered mail, return receipt requested. In each case notice shall be sent to:

If to the Company:                  Arden Realty Limited Partnership
                                    c/o Arden Realty, Inc.
                                    11601 Wilshire Boulevard
                                    Fourth Floor
                                    Los Angeles, CA 90025-1740
                                    Attention:  President
                                    Facsimile:(310) 966-2699

If to Executive:                    Randy J. Noblitt
                                    c/o Arden Realty, Inc.
                                    11601 Wilshire Boulevard
                                    Fourth Floor
                                    Los Angeles, CA 90025-1740
                                    Facsimile:(310) 966-2699

         Any party may change its address for the purpose of this Section 10.2
by giving the other party written notice of its new address in the manner set
forth above.

         10.3. Entire Agreement. This Agreement constitutes the entire agreement
of the parties, and supersedes all prior agreements including without
limitation, the Agreement between the Company and Executive dated as of January
1, 1999 which provided for a one year term of employment.

         10.4. Amendments; Waivers. This Agreement may be amended or modified,
and any of the terms and covenants may be waived, only by a written instrument
executed by the parties

                                       12
<PAGE>   13

hereto, or, in the case of a waiver, by the party waiving compliance. Any waiver
by any party in any one or more instances of any term or covenant contained in
this Agreement shall neither be deemed to be nor construed as a further or
continuing waiver of any such term or covenant of this Agreement.

         10.5. Provisions Severable. In case any one or more provisions of this
Agreement shall be invalid, illegal or unenforceable, in any respect, the
validity, legality and enforceability of the remaining provisions contained
herein shall not, in any way, be affected or impaired thereby. If any provision
hereof is determined by any court of competent jurisdiction to be invalid or
unenforceable by reason of such provision extending the covenants and agreements
contained herein for too great a period of time or over too great a geographical
area, or being too extensive in any other respect, such provision shall be
interpreted to extend only over the maximum period of time and geographical
area, and to the maximum extent in all other respects, as to which it is valid
and enforceable, all as determined by such court in such action.

         10.6. Attorney's Fees. If any legal action, arbitration or other
proceeding, is brought for the enforcement of this Agreement, or because of an
alleged dispute, breach or default in connection with any of the provisions of
this Agreement, each of the parties hereto shall be responsible for payment of
any attorneys' fees and other costs incurred by them in that action or
proceeding, without regard to whomever is the prevailing party in such action or
proceeding.

         10.7. Governing Law. This Agreement shall be construed, performed and
enforced in accordance with, and governed by the laws of the State of California
without giving effect to the principles of conflict of laws thereof.

         10.8. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which shall
constitute the same instrument.

                                       13
<PAGE>   14

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

THE COMPANY:

ARDEN REALTY LIMITED
PARTNERSHIP, a Maryland Limited
Partnership

By:  ARDEN REALTY, INC.,
     a Maryland corporation
     Its:  Sole General Partner

By: /s/ VICTOR J. COLEMAN                         March 19, 2001
   -----------------------------                  ------------------------------
     Victor J. Coleman                            Date
     Its:  President and COO

EXECUTIVE:

/s/ RANDY J. NOBLITT                              March 19, 2001
--------------------------------                  ------------------------------
Randy J. Noblitt                                  Date<PAGE>   1

                                                                   EXHIBIT 10.43

                    AMENDED AND RESTATED EMPLOYMENT AGREEMENT

         THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT ("Agreement") is made
and entered into as of July 27, 2000, by and between ARDEN REALTY LIMITED
PARTNERSHIP, a Maryland limited partnership (the "Company"), ARDEN REALTY, INC.,
a Maryland corporation and the Company's general partner ("Arden" or the
"General Partner") and RICHARD S. ZIMAN ("Executive").

1        EMPLOYMENT

         The Company and Arden (hereinafter referred to collectively as the
"Employers") hereby employ Executive and Executive hereby accepts employment
upon the terms and conditions set forth below.

2        TERM AND RENEWAL

         2.1 Term. The term of this Agreement shall commence on July 1, 2000
(the "Effective Date"), and shall continue for four years from the Effective
Date (the "Original Employment Term"), on the terms and conditions set forth
below, unless sooner terminated as provided in Section 5.

         2.2 Extension. Following the expiration of the Original Employment Term
and provided that this Agreement has not been terminated pursuant to Section 5,
and every year thereafter, the Agreement shall be automatically renewed for an
additional 12-month period, effective on each anniversary date of the Effective
Date; provided, that if a Change in Control (as defined in Section 5.6), occurs
during the original or extended term of this Agreement, this Agreement shall
continue in effect for a period not less than twenty-four (24) months beyond the
month in which such Change in Control occurred.

3        COMPENSATION

         3.1 Base Compensation. For the services to be rendered by Executive
under this Agreement, Executive shall be entitled to receive, commencing as of
the Effective Date, an initial annual base compensation ("Base Compensation") of
$500,000, payable in substantially equal semi-monthly installments. The Base
Compensation shall be reviewed and adjusted at least annually as determined by
the Compensation Committee (the "Compensation Committee") of the Board of
Directors (the "Board") of the General Partner.

         3.2 Bonus Compensation. The Compensation Committee shall review
Executive's performance at least annually during each year of the Original
Employment Term and during any periods of automatic extension of this Agreement
pursuant to Section 2.2 and shall cause the Employers to award Executive a cash
bonus (the "Bonus") which the Compensation Committee shall reasonably determine
as fairly compensating and rewarding Executive for services rendered to the
Employers and/or as an incentive for continued service to the Employers. The
Bonus shall be paid on or before January 31 of the following year. The amount of
the Bonus shall be

<PAGE>   2

determined in the sole and absolute discretion of the Compensation Committee
which shall take into consideration, among other things, the achievement of
certain per share performance levels by the Employers, including, without
limitation, growth in funds from operations, Executive's performance and
contribution to increasing the funds from operations, and bonus amounts awarded
to executives in similar positions at public companies similar to the Company in
public stature and companies within the Company's peer group; provided, however,
that the Bonus shall be at least $500,000 for the year 2000.

3.3      "Gross-Up" of Compensation.

         (a) Base Compensation/Base Gross-Up. The amount of the Base
Compensation and any Bonus payable to Executive pursuant to Sections 3.1 and 3.2
above, shall be "grossed up" as necessary (on an after-tax basis) to compensate
for any additional withholding taxes or other expenses due as a result of
Executive's employment by both the Company and Arden and the implementation of
the Compensation Split (as defined in Section 9 below) with respect to the
financial obligations of the Company and Arden, respectively.

         (b) 280G "Gross-Up".

                  (i) Anything in this Agreement to the contrary
notwithstanding, if it shall be determined that any payment or distribution to
Executive or for his benefit (whether paid or payable or distributed or
distributable) pursuant to the terms of this Agreement or otherwise (the
"Payment") would be subject to the excise tax imposed by section 4999 of the
Internal Revenue Code of 1986, as amended (the "Code") (the "Excise Tax"), then
Executive shall be entitled to receive from the Company an additional payment
(the "Gross-Up Payment") in an amount such that the net amount of the Payment
and the Gross-Up Payment retained by Executive after the calculation and
deduction of all Excise Taxes (including any interest or penalties imposed with
respect to such taxes) on the Payment and all federal, state and local income
tax, employment tax and Excise Tax (including any interest or penalties imposed
with respect to such taxes) on the Gross-Up Payment provided for in this Section
3.3(b) and taking into account any lost or reduced tax deductions on account of
the Gross-Up Payment, shall be equal to the Payment;

                  (ii) All determinations required to be made under this Section
3.3(b), including whether and when the Gross-Up Payment is required, the amount
of such Gross-Up Payment, and the assumptions to be used in arriving at such
determinations shall be made by the Accountants (as defined below) which shall
provide Executive and the Company with detailed supporting calculations with
respect to such Gross-Up Payment within fifteen (15) business days of the
receipt of notice from Executive or the Company that Executive has received or
will receive a Payment. For the purposes of this Section 3.3(b), the
"Accountants" shall mean the Company's independent certified public accountants
serving immediately prior to the Change in Control (as defined in Section 5.6).
In the event that the Accountants are also serving as accountant or auditor for
the individual, entity or group effecting the Change in Control, Executive shall
appoint another nationally recognized public accounting firm to make the
determinations required hereunder (which accounting firm shall then be referred
to as the Accountants hereunder). All fees and expenses of the Accountants shall
be borne solely by the Company. For the purposes of determining whether any of
the Payments will be subject to the

                                       2
<PAGE>   3

Excise Tax and the amount of such Excise Tax, such Payments will be treated as
"parachute payments" within the meaning of section 280G of the Code, and all
"parachute payments" in excess of the "base amount" (as defined under section
280G(b)(3) of the Code) shall be treated as subject to the Excise Tax, unless
and except to the extent that in the opinion of the Accountants such Payments
(in whole or in part) either do not constitute "parachute payments" or represent
reasonable compensation for services actually rendered (within the meaning of
section 280G(b)(4) of the Code) in excess of the "base amount," or such
"parachute payments" are otherwise not subject to such Excise Tax. For purposes
of determining the amount of the Gross-Up Payment, Executive shall be deemed to
pay Federal income taxes at the highest applicable marginal rate of federal
income taxation for the calendar year in which the Gross-Up Payment is to be
made and to pay any applicable state and local income taxes at the highest
applicable marginal rate of taxation for the calendar year in which the Gross-Up
Payment is to be made, net of the maximum reduction in federal income taxes
which could be obtained from the deduction of such state or local taxes if paid
in such year (determined without regard to limitations on deductions based upon
the amount of Executive's adjusted gross income), and to have otherwise
allowable deductions for federal, state and local income tax purposes at least
equal to those disallowed because of the inclusion of the Gross-Up Payment in
Executive's adjusted gross income. To the extent practicable, any Gross-Up
Payment with respect to any Payment shall be paid by the Company at the time
Executive is entitled to receive the Payment and in no event will any Gross-Up
Payment be paid later than five days after the receipt by Executive of the
Accountant's determination. Any determination by the Accountants shall be
binding upon the Company and Executive. As a result of uncertainty in the
application of section 4999 of the Code at the time of the initial determination
by the Accountants hereunder, it is possible that the Gross-Up Payment made will
have been an amount less than the Company should have paid pursuant to this
Section 3.3(b) (the "Underpayment"). In the event that the Company exhausts its
remedies pursuant to Section 3.3(b)(ii) and Executive is required to make a
payment of any Excise Tax, the Underpayment shall be promptly paid by the
Company to or for Executive's benefit; and

                  (iii) Executive shall notify the Company in writing of any
claim by the Internal Revenue Service that, if successful, would require the
payment by the Company of the Gross-Up Payment. Such notification shall be given
as soon as practicable after Executive is informed in writing of such claim and
shall apprise the Company of the nature of such claim and the date on which such
claim is requested to be paid. Executive shall not pay such claim prior to the
expiration of the 30-day period following the date on which Executive gives such
notice to the Company (or such shorter period ending on the date that any
payment of taxes, interest and/or penalties with respect to such claim is due).
If the Company notifies Executive in writing prior to the expiration of such
period that it desires to contest such claim, Executive shall:

                        (A) give the Company any information reasonably
         requested by the Company relating to such claim;

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

                                       3
<PAGE>   4

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

                        (D) permit the Company to participate in any proceedings
        relating to such claims;

provided, however, that the Company shall bear and pay directly all costs and
expenses (including additional interest and penalties) incurred in connection
with such contest and shall indemnify Executive for and hold Executive harmless
from, on an after-tax basis, any Excise Tax or income tax (including interest
and penalties with respect thereto) imposed as a result of such representation
and payment of all related costs and expenses. Without limiting the foregoing
provisions of this Section 3.3(b), the Company shall control all proceedings
taken in connection with such contest and, at its sole option, may pursue or
forgo any and all administrative appeals, proceedings, hearings and conferences
with the taxing authority in respect of such claim and may, at its sole option,
either direct Executive to pay the tax claimed and sue for a refund or contest
the claim in any permissible manner, and Executive agrees to prosecute such
contest to a determination before any administrative tribunal, in a court of
initial jurisdiction and in one or more appellate courts, as the Company shall
determine; provided, however, that if the Company directs Executive to pay such
claim and sue for a refund, the Company shall advance the amount of such payment
to Executive, on an interest-free basis, and shall indemnify Executive for and
hold Executive harmless from, on an after-tax basis, any Excise Tax or income
tax (including interest or penalties with respect thereto) imposed with respect
to such advance or with respect to any imputed income with respect to such
advance (including as a result of any forgiveness by the Company of such
advance); provided, further, that any extension of the statute of limitations
relating to the payment of taxes for the taxable year of Executive with respect
to which such contested amount is claimed to be due is limited solely to such
contested amount. Furthermore, the Company's control of the contest shall be
limited to issues with respect to which a Gross-Up Payment would be payable
hereunder and Executive shall be entitled to settle or contest, as the case may
be, any other issue raised by the Internal Revenue Service or any other taxing
authority.

         3.4 Benefits.

                  (a) Medical Insurance. The Employers shall provide to
Executive, Executive's spouse and children, at its sole cost, such health,
dental and optical insurance as the Employers may from time to time make
available to their other executive employees.

                  (b) Life and Disability Insurance. The Employers shall provide
Executive such disability and/or life insurance as the Employers in their sole
discretion may from time to time make available to their other executive
employees.

                  (c) Pension Plans, Etc. The Executive shall be entitled to
participate in all pension, 401(k) and other employee plans and benefits
established by the Employers on at least the same terms as the Employers' other
executive employees.

         3.5 Automobile Allowance. The Employers shall provide Executive with a
reasonable automobile allowance during the term of Executive's employment with
the Employers.

                                       4
<PAGE>   5

         3.6 Method of Payment. The monetary compensation payable and any
benefits due to Executive hereunder may be paid or provided in whole or in part,
from time to time, by the Employers and/or their respective subsidiaries and
affiliates, but shall at all times remain the responsibility of the Employers.

4        POSITION AND DUTIES

         4.1 Position. Executive shall serve as Chairman of the Board and Chief
Executive Officer of the Employers. The Employers agree that the duties that may
be assigned Executive shall be the usual and customary duties of the offices of
Chairman of the Board and Chief Executive Officer. Executive shall have such
executive power and authority as shall reasonably be required to enable
Executive to discharge the duties of such offices. Executive may, at Executive's
discretion, serve the Employers and/or their respective subsidiaries and
affiliates in other offices and capacities in addition to the foregoing, but
shall not be required to do so. In the event the Employers and Executive
mutually agree that Executive shall terminate Executive's service in any one or
more of the aforementioned capacities, or Executive's service in one or more of
the aforementioned capacities is terminated, Executive's compensation, as
specified in this Agreement, shall not be diminished or reduced in any manner.

         4.2 Devotion of Time and Effort. Executive shall use Executive's good
faith best efforts and judgment in performing Executive's duties as required
hereunder and to act in the best interests of the Employers. Executive shall
devote such time, attention and energies to the business of the Employers as are
reasonably necessary to satisfy Executive's required responsibilities and duties
hereunder.

         4.3 Other Activities. Executive may engage in other activities for
Executive's own account while employed hereunder, including without limitation
charitable, community and other business activities, provided that such other
activities do not materially interfere with the performance of Executive's
duties hereunder.

         4.4 Vacation. It is understood and agreed that Executive shall be
entitled to six weeks vacation per year. During such vacation periods, Executive
shall not be relieved of Executive's duties under this Agreement and there will
be no abatement or reduction of Executive's compensation hereunder. In the event
Executive reaches the maximum vacation accrual allowance, Executive shall be
paid out for accrued but unused vacation time.

         4.5 Business Expenses. The Employers shall promptly, but in no event
later than ten days after submission of a claim of expenditure, reimburse
Executive for all reasonable business expenses including, without limitation,
business entertainment, business seminar fees, professional association dues,
bar dues, country club membership fees and other reasonable entertainment
expenses incurred by Executive in connection with the business of the Employers
and/or their respective subsidiaries and affiliates, upon presentation to the
Employers of written receipts for such expenses. Such reimbursement shall also
include, but not be limited to, reimbursement for all reasonable travel
expenses, including all airfare, hotel and rental car expenses, incurred by
Executive in traveling in connection with the business of the Employers.

                                       5
<PAGE>   6

         4.6 Employers' Obligations. The Employers shall provide Executive with
any and all necessary or appropriate current financial information and access to
current information and records regarding all material transactions involving
the Employers and/or their representative subsidiaries and affiliates, including
but not limited to acquisition of assets, personnel contracts, dispositions of
assets, service agreements and registration statements or other state or federal
filings or disclosures, reasonably necessary for Executive to carry out
Executive's duties and responsibilities hereunder. In addition, the Employers
agree to provide Executive, as a condition to Executive's services hereunder,
such staff, equipment and office space as is reasonably necessary for Executive
to perform Executive's duties hereunder.

5        TERMINATION

         5.1 By Employers Without Cause. The Employers may terminate this
Agreement without "cause" (as hereinafter defined) at any time following the
Effective Date, provided that the Employers first deliver to Executive the
Employers' written election to terminate this Agreement at least 90 days prior
to the effective date of termination.

         5.2 Severance Payment.

                  (a) Amount. In the event the Employers terminate Executive's
services hereunder pursuant to Section 5.1, Executive shall continue to render
services to the Employers pursuant to this Agreement until the date of
termination and shall continue to receive Base Compensation, as provided
hereunder, through the termination date plus an amount equal to the most recent
annual Bonus prorated on an annual basis to such termination date. In addition
to other compensation payable to Executive for services rendered through the
termination date, the Employers shall pay Executive no later than the date of
such termination, as a single severance payment, an amount equal to the sum of:
(i) four (4) times Executive's highest annual Base Compensation during the
preceding forty-eight month period, plus (ii) an amount equal to four (4) times
the highest annual Bonus received by Executive during the preceding forty-eight
month period (for purposes of the first year of this Agreement, the Bonus set
forth in Section 3.2 hereof for the 2000 fiscal year shall be considered to be
within the forty-eight month period) (collectively, the "Severance Amount"). In
addition to payment of the Severance Amount, any unvested stock options or
restricted stock held by Executive shall become fully vested as of the date of
termination (the "Stock and Option Vesting").

                  (b) Benefits. In the event Executive's employment hereunder is
terminated by the Employers without cause pursuant to Section 5.1 or by
Executive pursuant to Section 5.4 or 5.6, then in addition to paying Executive
the Severance Amount and providing for the full vesting of unvested stock
options or restricted stock held by Executive, the Employers shall continue to
provide to Executive and Executive's spouse and children, as applicable, all of
the benefits described in Section 3.4 for a period of four (4) years commencing
on the date of such termination (the "Severance Benefits") to the extent
permitted by applicable law.

         5.3 By the Employers For Cause. The Employers may terminate Executive
for cause at any time, upon written notice to Executive. For purposes of this
Agreement, "cause" shall mean:

                                       6
<PAGE>   7

                  (a) Executive's conviction for commission of a felony or a
crime involving moral turpitude;

                  (b) Executive's willful commission of any act of theft,
embezzlement or misappropriation against the Employers which, in any such case,
is materially and demonstrably injurious to the Employers;

                  (c) Executive's willful and continued failure to substantially
perform Executive's duties hereunder (other than such failure resulting from
Executive's incapacity due to physical or mental illness), which failure is not
remedied within a reasonable time after written demand for substantial
performance is delivered by the Employers which specifically identifies the
manner in which the Employers believe that Executive has not substantially
performed Executive's duties; or

                  (d) Executive's death or Disability (as hereinafter defined).

         For purposes of this Section 5.3, no act, or failure to act, on
Executive's part shall be deemed "willful" unless done, or omitted to be done,
by Executive not in good faith.

         In the event Executive is terminated for cause pursuant to this Section
5.3, Executive shall have the right to receive Executive's compensation as
otherwise provided under this Agreement through the effective date of
termination. Executive shall have no further right to receive compensation or
other consideration from the Employers or have any other remedy whatsoever
against the Employers as a result of this Agreement or the termination of
Executive pursuant to this Section 5.3, except as set forth below with respect
to a termination due to Executive's Disability.

         In the event Executive is terminated by reason of Executive's death or
Disability, the Employers shall immediately pay Executive the Severance Amount
and shall continue to provide to Executive's spouse and children, as applicable,
all of the benefits described in Section 3.4 for a period of four (4) years
commencing on the date of such termination to the extent permitted by applicable
law. Said payment shall be in addition to any disability insurance payments to
which Executive is otherwise entitled and any other compensation earned by
Executive hereunder. In addition, any unvested stock options or restricted stock
held by Executive shall become fully vested as of the date of termination. For
purposes of this Agreement, the term "Disability" shall mean a physical or
mental incapacity as a result of which Executive becomes unable to continue the
proper performance of Executive's duties hereunder for six consecutive calendar
months or for shorter periods aggregating 180 business days in any 12 month
period, but only to the extent that such definition does not violate the
Americans with Disabilities Act.

         5.4 By Executive For Good Reason. Executive may terminate this
Agreement for good reason upon at least 10 days prior written notice to the
Employers. For purposes of this Agreement, "good reason" shall mean:

                  (a) the Employers' material breach of any of their respective
obligations hereunder and either such breach is incurable or, if curable, has
not been cured within fifteen (15) days following receipt of written notice by
Executive to the Employers of such breach by either of the Employers;

                                       7
<PAGE>   8

                  (b) any removal of Executive from one or more of the offices
specified in the first sentence of Section 4.1 without cause and without
Executive's prior written consent;

                  (c) any material decrease in Executive's authority or
responsibilities hereunder without Executive's prior written consent; or

                  (d) other than by Executive, failure of the Company to
nominate, or Executive to be elected, to serve as a Director of the Company and
as Chairman of the Board and CEO of the Company.

         In the event that Executive terminates this Agreement for good reason
pursuant to this Section 5.4, Executive shall have the right to receive
Executive's Base Compensation as provided hereunder through the effective date
of termination plus an amount equal to the most recent annual Bonus of Executive
prorated on an annual basis to the date of such termination, and shall also have
the same rights and remedies against the Employers as Executive would have had
if the Employers had terminated Executive's employment without cause pursuant to
Section 5.1 (including the right to receive the Severance Amount payable and the
Severance Benefits to be provided under Section 5.2).

         5.5 Executive's Voluntary Termination. Executive may, at any time,
terminate this Agreement without good reason upon written notice delivered to
the Employers at least ninety (90) days prior to the effective date of
termination. In the event of such voluntary termination of this Agreement by
Executive: (i) Executive shall have the right to receive Executive's
compensation as provided hereunder through the effective date of termination,
and (ii) the Employers on the one hand, and Executive, on the other hand, shall
not have any further right or remedy against one another except as provided in
Sections 6, 7 and 8 hereof which shall remain in full force and effect.

         5.6 Change in Control. Executive may terminate this Agreement, upon at
least ten (10) days' prior written notice to the Employers at any time within
two (2) years after a "change in control" (as hereinafter defined) of the
Employers. In the event Executive terminates this Agreement within two (2) years
after a change in control pursuant to this Section 5.6, (i) Executive shall
continue to render services pursuant hereto and shall continue to receive Base
Compensation, as provided hereunder, through the termination date plus an amount
equal to the most recent annual Bonus of Executive prorated on an annual basis
to the date of such termination, (ii) the Employers shall pay Executive no later
than the date of such termination, as a single severance payment, an amount
equal to the Severance Amount and the Stock and Option Vesting and (iii)
following such termination, the Employers shall provide the Severance Benefits
as required by Section 5.2(b). For purposes of this Agreement, a "change in
control" shall mean the occurrence of any of the following events:

                  (a) the individuals constituting the Board as of the Effective
Date (the "Incumbent Board") cease for any reason to constitute at least
two-thirds (2/3rds) of the Board; provided, however, that if the election, or
nomination for election by the General Partner's stockholders, of any new
director was approved by a vote of at least two-thirds (2/3rds) of the Incumbent
Board, such new director shall be considered a member of the Incumbent Board;

                                       8
<PAGE>   9

                  (b) an acquisition of any voting securities of the General
Partner (the "Voting Securities") by any "person" (as the term "person" is used
for purposes of Section 13(d) or Section 14(d) of the Securities Exchange Act of
1934, as amended (the "1934 Act")) immediately after which such person has
"beneficial ownership" (within the meaning of Rule 13d-3 promulgated under the
1934 Act) ("Beneficial Ownership") of 20% or more of the combined voting power
of the General Partner's then outstanding Voting Securities; or

                  (c) approval by the stockholders of the General Partner of:

                           (i) a merger, consolidation, share exchange or
reorganization involving the General Partner, unless

                                    (A) the stockholders of the General Partner,
                  immediately before such merger, consolidation, share exchange
                  or reorganization, own, directly or indirectly immediately
                  following such merger, consolidation, share exchange or
                  reorganization, at least 80% of the combined voting power of
                  the outstanding voting securities of the corporation that is
                  the successor in such merger, consolidation, share exchange or
                  reorganization (the "Surviving Company") in substantially the
                  same proportion as their ownership of the Voting Securities
                  immediately before such merger, consolidation, share exchange
                  or reorganization; and

                                    (B) the individuals who were members of the
                  Incumbent Board immediately prior to the execution of the
                  agreement providing for such merger, consolidation, share
                  exchange or reorganization constitute at least two-thirds
                  (2/3rds) of the members of the board of directors of the
                  Surviving Company;

                           (ii) a complete liquidation or dissolution of the
General Partner; or

                           (iii) an agreement for the sale or other disposition
of all or substantially all of the assets of the Company or the General Partner.

                  (d) any Person is or becomes the Beneficial Owner of
securities of the General Partner representing ten percent (10%) or more of the
combined voting power of the General Partner's then outstanding securities and
individuals constituting at least one-quarter (1/4) of the members of the Board
at the beginning of such period shall leave the Board during the period
beginning sixty (60) days before the attainment of the ten percent (10%)
beneficial ownership and ending two (2) years thereafter.

                  (e) the sale or the disposition of forty percent (40%) or more
of the assets of the Company or the General Partner.

6        CONFIDENTIALITY

         During the term of Executive's employment under this Agreement,
Executive will have access to and become acquainted with various information
relating to the Employers' business operations, marketing data, business plans,
strategies, employees, contracts, financial records and accounts, projections
and budgets, and similar information. Executive agrees that to the extent

                                       9
<PAGE>   10

such information is not generally available to the public and gives either of
the Employers an advantage over competitors who do not know of or use such
information, such information and documents constitute "trade secrets" of the
Employers. Executive further agrees that all such information and documents
relating to the business of the Employers whether they are prepared by Executive
or come into Executive's possession in any other way, are owned by the Employers
and shall remain the exclusive property of the Employers. Executive shall not
misuse, misappropriate or disclose any trade secrets of the Employers directly
or indirectly, or use them for Executive's own benefit, either during the term
of this Agreement or at any time thereafter, except as may be necessary or
appropriate in the course of Executive's employment with the Employers unless
such action is either previously agreed to in writing by the Employers or
required by law.

7        NON-SOLICITATION

         For a period of six (6) months following the date Executive's
employment hereunder is terminated, Executive shall not solicit or induce any of
the Employers' employees, agents or independent contractors to end their
relationship with either of the Employers, or recruit, hire or otherwise induce
any such person to perform services for Executive, or any other person, firm or
company. The restrictions set forth in this Section 7 shall not apply if
Executive's employment is terminated pursuant to Section 5.1, 5.4 or 5.6.

8        INDEMNIFICATION

         To the fullest extent permitted under applicable law, the Employers
shall indemnify, defend and hold Executive harmless from and against any and all
causes of action, claims, demands, liabilities, damages, costs and expenses of
any nature whatsoever (collectively, "Damages") directly or indirectly arising
out of or relating to Executive discharging Executive's duties hereunder on
behalf of the Employers and/or their respective subsidiaries and affiliates, so
long as Executive acted in good faith within the course and scope of Executive's
duties with respect to the matter giving rise to the claim or Damages for which
Executive seeks indemnification.

9        PAYMENT OF FINANCIAL OBLIGATIONS BY EMPLOYERS

         The payment or provision to the Executive by the Employers of any
remuneration, benefits or other financial obligations pursuant to this
Agreement, including, without limitation, the payment of Executive's Base
Compensation, any cash bonuses, the provision of benefits enumerated in Section
3.4, the reimbursement of business expenses pursuant to Section 4.5, the payment
(if applicable) of the Severance Amount and provision of the Severance Benefits
and any indemnification obligations, shall be allocated (the "Compensation
Split") 80% to the Company and 20% to Arden initially, subject to adjustment
from time to time by the Compensation Committee; provided, however, that the
Company shall guarantee Arden's payment.

                                       10
<PAGE>   11

10       GENERAL PROVISIONS

         10.1 Assignment; Binding Effect. None of the Employers or Executive may
assign, delegate or otherwise transfer this Agreement or any of their respective
rights or obligations hereunder without the prior written consent of the other
party. Any attempted prohibited assignment or delegation shall be void. This
Agreement shall be binding upon and inure to the benefit of any permitted
successors or assigns of the parties and the heirs, executors, administrators
and/or personal representatives of Executive.

         10.2 Notices. All notices, requests, demands and other communications
that are required or may be given under this Agreement shall be in writing and
shall be deemed to have been duly given when received if personally delivered;
when transmitted if transmitted by telecopy, electronic or digital transmission
method with electronic confirmation of receipt; the day after it is sent, if
sent for next-day delivery to a domestic address by recognized overnight
delivery service (e.g., FedEx); and upon receipt, if sent by certified or
registered mail, return receipt requested. In each case notice shall be sent to:

If to the Company                      Arden Realty, Inc.
or Arden:                              11601 Wilshire Boulevard
                                       Fourth Floor
                                       Los Angeles, CA 90025-1740
                                       Attention:  President
                                       Facsimile:(310) 966-9494

If to Executive:                       Richard S. Ziman
                                       c/o Arden Realty, Inc.
                                       11601 Wilshire Boulevard
                                       Fourth Floor
                                       Los Angeles, CA 90025-1740
                                       Facsimile:(310) 966-9494

         Any party may change its address for the purpose of this Section 10.2
by giving the other party written notice of its new address in the manner set
forth above.

         10.3 Entire Agreement. This Agreement constitutes the entire agreement
of the parties, and supersedes all prior agreements (including, without
limitation, that certain employment agreement by and between Executive, the
Company and Arden dated October 9, 1996), understandings and negotiations,
whether written or oral, between the Employers and Executive with respect to the
employment of Executive by the Employers.

         10.4 Amendments; Waivers. This Agreement may be amended or modified,
and any of the terms and covenants may be waived, only by a written instrument
executed by the parties hereto, or, in the case of a waiver, by the party
waiving compliance. Any waiver by any party in any one or more instances of any
term or covenant contained in this Agreement shall neither be deemed to be nor
construed as a further or continuing waiver of any such term or covenant of this
Agreement.

                                       11
<PAGE>   12

         10.5 Provisions Severable. In case any one or more provisions of this
Agreement shall be invalid, illegal or unenforceable, in any respect, the
validity, legality and enforceability of the remaining provisions contained
herein shall not, in any way, be affected or impaired thereby. If any provision
hereof is determined by any court of competent jurisdiction to be invalid or
unenforceable by reason of such provision extending the covenants and agreements
contained herein for too great a period of time or over too great a geographical
area, or being too extensive in any other respect, such provision shall be
interpreted to extend only over the maximum period of time and geographical
area, and to the maximum extent in all other respects, as to which it is valid
and enforceable, all as determined by such court in such action.

         10.6 Attorney's Fees. If any legal action, arbitration or other
proceeding, is brought for the enforcement of this Agreement, or because of an
alleged dispute, breach or default in connection with any of the provisions of
this Agreement, each of the parties hereto shall be responsible for payment of
any attorneys' fees and other costs incurred by them in that action or
proceeding, without regard to whomever is the prevailing party in such action or
proceeding.

         10.7 Governing Law. This Agreement shall be construed, performed and
enforced in accordance with, and governed by the laws of the State of California
without giving effect to the principles of conflict of laws thereof.

         10.8 Survival. The obligation of the parties under Sections 3.3, 4.5,
5, 6, 7, 8, 9, 10.1, 10.2 and 10.6 shall survive the termination of this
Agreement.

         10.9 Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which shall
constitute the same instrument.

                                       12
<PAGE>   13

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

THE COMPANY:

ARDEN REALTY LIMITED
PARTNERSHIP, a Maryland limited
partnership

By:  ARDEN REALTY, INC.,
     a Maryland corporation
Its  General Partner

By:  /s/ Victor J. Coleman
     -------------------------------
     Victor J. Coleman
     President

ARDEN:

ARDEN REALTY, INC.,
a Maryland corporation

By:  /s/ Victor J. Coleman
     -------------------------------
     Victor J. Coleman
     President

EXECUTIVE:

/s/ Richard S. Ziman
-------------------------------
Richard S. Ziman

                                       13

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