Document:

Exhibit 10.5

                               CONFORMED COPY

                              ACE USA OFFICER
                         DEFERRED COMPENSATION PLAN
                         --------------------------
                    (as amended through January 1, 2000)

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                             TABLE OF CONTENTS

SECTION 1................................................................. 1
         General  .........................................................1
                  1.1.  Purpose ...........................................1
                  1.2.  Effective Date.....................................1
                  1.3.  Related Companies and Employers....................1
                  1.4.  Operation and Administration.......................1
                  1.5.  Plan Year..........................................1
                  1.6.  Gender and Number..................................1
                  1.7.  Notices ...........................................2
                  1.8.  Form and Time of Elections.........................2
                  1.9.  Other Costs and Benefits...........................2
                  1.10.  Evidence..........................................2
                  1.11.  Action by Employers...............................2

SECTION 2..................................................................2
         Participation.....................................................2
                  2.1.  Participant........................................2
                  2.2.  Deferral Election..................................3
                  2.3.  Eligible Compensation..............................3
                  2.4.  Plan Not Contract of Employment....................3

SECTION 3..................................................................3
         Plan Accounting...................................................3
                  3.1.  Accounts...........................................3
                  3.2.  Adjustment of Accounts.............................3
                  3.3.  Crediting Under Deferral Election..................4
                  3.4.  Investment Return Dates............................4
                  3.5.  Participant Selection of Investment Return Rate....4
                  3.6.  Statement of Accounts..............................4

SECTION 4..................................................................5
         Distributions.....................................................5
                  4.1.  General ...........................................5
                  4.2.  Distribution Election..............................5
                  4.3.  Beneficiary........................................5
                  4.4.  Distributions to Disabled Persons..................5
                  4.5.  Benefits May Not be Assigned.......................5
                  4.6.  Offset  ...........................................6
                  4.7.  Unforeseeable Emergency............................6

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SECTION 5..................................................................6
         Source of Benefit Payments........................................6
                  5.1.  Liability for Benefit Payments.....................6
                  5.2.  No Guarantee.......................................7

SECTION 6..................................................................7
         Committee.........................................................7
                  6.1.  Powers of Committee................................7
                  6.2.  Delegation by Committee............................7
                  6.3.  Information to be Furnished to Committee...........8
                  6.4.  Liability and Indemnification of Committee.........8

SECTION 7..................................................................8
         Amendment and Termination.........................................8

                                       -ii-

<PAGE>

                                  ACE USA
                     OFFICER DEFERRED COMPENSATION PLAN

                                 SECTION 1

                                  General

      1.1. Purpose. The ACE USA Officer Deferred Compensation Plan (the
"Plan") has been established by ACE Limited (the "Company") so that it, and
each of the Related Companies which, with the consent of the Company,
adopts the Plan may provide its eligible employees with an opportunity to
build additional financial security, thereby aiding such companies in
attracting and retaining employees of exceptional ability.

      1.2. Effective Date. The "Effective Date" of the Plan is January 1, 1998.

      1.3. Related Companies and Employers. For purposes of the Plan, the
term "Related Company" means any company during any period in which it is a
"subsidiary corporation," as that term is defined in section 424(f) of the
United States Internal Revenue Code of 1986, as amended (the "Code") with
respect to the Company. The Company and each Related Company which adopts
the Plan for the benefit of its eligible employees are referred to below
collectively as the "Employers" and individually as an "Employer."  A
Related Company may adopt the Plan by action of its Board of Directors;
provided that a Related Company will be considered to have adopted the Plan
for its Eligible Employees (without the need for action by its Board of
Directors) if an executive officer of the Related Company announces such
adoption to the Eligible Employees.

      1.4. Operation and Administration. The authority to control and
manage the operation and administration of the Plan shall be vested in the
Compensation Committee (the "Committee") of the Board of Directors of the
Company (the "Board"). In controlling and managing the operation and
administration of the Plan, the Committee shall have the rights, powers and
duties set forth in Section 6. Capitalized terms in the Plan shall be
defined as set forth in the Plan.

      1.5.  Plan Year.  The term "Plan Year" means the fiscal year of the
Company.

      1.6.  Gender and Number.  Where the context admits, words in any gender
shall include any other gender, words in the singular shall include the plural
and the plural shall include the singular.

                                         -i-

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      1.7. Notices. Any notice or document required to be filed with the
Plan Administrator or the Committee under the Plan will be properly filed
if delivered or mailed to the Plan Administrator, in care of the Company,
at its principal executive offices. The Plan Administrator may, by advance
written notice to affected persons, revise such notice procedure from time
to time. Any notice required under the Plan may be waived by the person
entitled to notice.

      1.8. Form and Time of Elections. Unless otherwise specified herein,
each election required or permitted to be made by any Participant or other
person entitled to benefits under the Plan, and any permitted modification
or revocation thereof, shall be in writing filed at such times, in such
form, and subject to such restrictions and limitations as the Plan
Administrator shall require. In addition to any other deferral elections
made under this Plan, an election to defer the receipt of an award under
the ACE Limited Annual Performance Incentive Plan will be made under this
Plan.

      1.9. Other Costs and Benefits. The Plan is intended to defer, but not
to eliminate, payment of compensation to a Participant. Accordingly, if any
compensation or benefits that would otherwise be provided to a Participant
in the absence of the Plan are reduced or eliminated by reason of deferral
under the Plan, the Company shall equitably compensate the Participant for
such reduction or elimination. However, no reimbursement will be made for
increased taxes resulting from benefits under the Plan (whether resulting
from a change in individual income tax rates or otherwise).

      1.10.  Evidence.  Evidence required of anyone under the Plan may be by
certificate, affidavit, document or other information which the person acting
on it considers pertinent and reliable, and signed, made or presented by the
proper party or parties.

      1.11.  Action by Employers.  Any action required or permitted to be taken
by any Employer shall be by resolution of its board of directors, or by a duly
authorized officer of the Employer.

                                 SECTION 2

                               Participation

      2.1.  Participant.  Subject to the terms of the Plan, an individual
shall be eligible to make deferrals under the Plan during any period he or she
is an Eligible Employee. For purposes of the Plan, the term "Eligible Employee"
for any period shall mean any individual during any period he or she is a
Bermuda-based employee of an Employer;

                                     -2-

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provided that the Committee may designate any other employee of an Employer
or member of a group of employees of an Employer as an Eligible Employee.

      2.2. Deferral Election. An Eligible Employee shall participate in the
Plan by electing to defer payment of all or a portion of his or her
Eligible Compensation pursuant to the terms of a "Deferral Election." An
individual's Deferral Election shall be filed with the Plan Administrator
prior to the period to which it relates. Except as otherwise provided by
the Committee, a Participant may not revoke any Deferral Elections. The
Committee may revoke a Participant's Deferral Election as of the date on
which the Participant ceases to be an Eligible Employee (provided that this
sentence shall not be construed to permit the Committee to revoke a
Distribution Election by reason of the Participant ceasing to be an
Eligible Employee).

      2.3. Eligible Compensation. For purposes of the Plan, a Participant's
"Eligible Compensation" from any Employer for any Plan Year means (i)
salary otherwise payable to him by the Employer, (ii) amounts payable under
the ACE Limited Annual Performance Incentive Plan and (iii) amounts which
are designated by the Committee as compensation eligible for deferral in
accordance with the Plan.

      2.4. Plan Not Contract of Employment. The Plan does not constitute a
contract of employment, and participation in the Plan will not give any
employee the right to be retained in the employ of any Employer nor any
right or claim to any benefit under the Plan, unless such right or claim
has specifically accrued under the terms of the Plan.

                                 SECTION 3

                              Plan Accounting

      3.1. Accounts. The Plan Administrator shall establish an Account for
each Participant who has filed a Deferral Election. If a Participant's
Eligible Compensation subject to a Deferral Election would otherwise be
payable from more than one Employer, a separate Account shall be
established for the Participant with respect to the Eligible Compensation
from each such Employer. The amount held in an Account established on
behalf of a Participant will be expressed in United States dollars.

      3.2. Adjustment of Accounts. Each Account shall be adjusted in
accordance with this Section 3 in a uniform manner as of such periodic
"Accounting Dates" as may be determined by the Committee from time to time.
As of each Accounting Date, the balance of each Account shall be adjusted
as follows:

                                      -3-

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(a)   first, charge to the Account balance the amount of any distributions
      under the Plan with respect to that Account that have not previously
      been charged;

(b)   then, adjust the Account balance for the applicable Investment Return
      Rate(s); and

(c)   then, credit to the Account balance the amount to be credited to that
      Account in accordance with subsection 3.3 that have not previously
      been credited.

      3.3. Crediting Under Deferral Election. The balance of a
Participant's Account for any period shall be credited, in accordance with
the provisions of paragraph 3.2(c), with the amount by which his or her
Eligible Compensation for that period is reduced pursuant to a Deferral
Election. Such crediting shall occur as of the date on which such Eligible
Compensation would otherwise have been paid to the Participant by the
Employer were it not for the reduction made pursuant to the Deferral
Election or, if such date is not an Accounting Date, as of the first
Accounting Date occurring thereafter.

      3.4. Investment Return Rates. The "Investment Return Rate(s)" with
respect to the Account(s), or portions of the Account(s), of any
Participant for any period shall be the Investment Return Rate(s) elected
by the individual in accordance with subsection 3.5 from among such
investment alternatives (if any) for that period which, in the discretion
of the Committee, are offered from time to time under this paragraph 3.4.

      3.5. Participant Selection of Investment Return Rate. The Investment
Return Rate alternatives under the Plan, and a Participant's ability to
choose among Investment Return Rate alternatives, shall be determined in
accordance with rules established by the Committee from time; provided,
however, that the Company may not modify the Investment Return Rate with
respect to periods prior to the adoption of such modification.

      3.6. Statement of Accounts. As soon as practicable after the end of
each Plan Year, and at such other times as determined by the Committee or
the Chief Executive Officer of the Company, the Company shall provide each
Participant having one or more Accounts under the Plan with a statement of
the transactions in his or her Accounts during that year and his or her
Account balances as of the end of the year.

                                        -4-

<PAGE>

                                 SECTION 4

                               Distributions

      4.1. General. Subject to this Section 4, the balance of a
Participant's Account(s) with respect to any year shall be distributed in
accordance with the Participant's Distribution Election. In no event shall
the amount distributed with respect to any Participant's Account as of any
date exceed the amount of the Account balance as of that date.

      4.2.  Distribution Election.  A Participant's Distribution Election shall
specify the manner (including the time and form of distribution) in which the
Participant's Account(s) shall be distributed, subject to such restrictions
and limitations as may be imposed by the Committee.

      4.3. Beneficiary. Subject to the terms of the Plan, any benefits
payable to a Participant under the Plan that have not been paid at the time
of the Participant's death shall be paid at the time and in the form
determined in accordance with the foregoing provisions of the Plan, to the
beneficiary designated by the Participant in writing filed with the Plan
Administrator in such form and at such time as the Plan Administrator shall
require. A beneficiary designation form will be effective only when the
signed form is filed with the Plan Administrator while the Participant is
alive and will cancel all beneficiary designation forms filed earlier. If a
deceased Participant failed to designate a beneficiary, or if the
designated beneficiary of a deceased Participant dies before him or before
complete payment of the Participant's benefits, the amounts shall be paid
to the legal representative or representatives of the estate of the last to
die of the Participant and his or her designated beneficiary.

      4.4. Distributions to Disabled Persons. Notwithstanding the
provisions of this Section 4, if, in the Plan Administrator's opinion, a
Participant or beneficiary is under a legal disability or is in any way
incapacitated so as to be unable to manage his or her financial affairs,
the Plan Administrator may direct that payment be made to a relative or
friend of such person for his or her benefit until claim is made by a
conservator or other person legally charged with the care of his or her
person or his or her estate, and such payment shall be in lieu of any such
payment to such Participant or beneficiary. Thereafter, any benefits under
the Plan to which such Participant or beneficiary is entitled shall be paid
to such conservator or other person legally charged with the care of his or
her person or his or her estate.

      4.5.  Benefits May Not be Assigned.  Neither the Participant nor any
other person shall have any voluntary or involuntary right to commute, sell,
assign, pledge,

                                     -5-

<PAGE>

anticipate, mortgage or otherwise encumber, transfer, hypothecate or convey
in advance of actual receipt of the amounts, if any, payable hereunder, or
any part hereof, which are expressly declared to be unassignable and
non-transferable. No part of the amounts payable shall be, prior to actual
payment, subject to seizure or sequestration for payment of any debts,
judgements, alimony or separate maintenance owed by the Participant or any
other person, or be transferred by operation of law in the event of the
Participant's or any other person's bankruptcy or insolvency.

      4.6. Offset. Notwithstanding the provisions of subsection 4.5, if, at
the time payments are to be made under the Plan, the Participant or
beneficiary or both are indebted or obligated to any Employer or Related
Company, then the payments remaining to be made to the Participant or the
beneficiary or both may, at the discretion of the Plan Administrator, be
reduced by the amount of such indebtedness, or obligation, provided,
however, that an election by the Plan Administrator not to reduce any such
payment shall not constitute a waiver of the claim for such indebtedness or
obligation.

      4.7. Unforeseeable Emergency. Prior to the date otherwise scheduled
for distribution of his or her benefits under the Plan, upon a showing of
an unforeseeable emergency, a Participant may elect to accelerate payment
of an amount not exceeding the lesser of (a) the amount necessary to meet
the emergency or (b) the sum of his or her Account balance(s) under the
Plan. For purposes of the Plan, the term "unforeseeable emergency" shall
mean an unanticipated emergency that is caused by an event beyond the
control of the Participant (or the control of the beneficiary, if the
amount is payable to a beneficiary) and that would result in severe
financial hardship to the individual if early withdrawal were not
permitted. The determination of "unforeseeable emergency" shall be made by
the Plan Administrator, based on such information as the Plan Administrator
shall deem to be necessary.

                                 SECTION 5

                         Source of Benefit Payments

      5.1. Liability for Benefit Payments. Subject to the provisions of
this Section 5, an Employer shall be liable for payment of benefits under
the Plan with respect to any Participant to the extent that such benefits
are attributable to the deferral of compensation otherwise payable by that
Employer to the Participant. Any disputes relating to liability of
Employers for benefit payments shall be resolved by the Committee.

                                      -6-

<PAGE>

      5.2. No Guarantee. Neither a Participant nor any other person shall,
by reason of the Plan, acquire any right in or title to any assets, funds
or property of the Employers whatsoever, including, without limitation, any
specific funds, assets, or other property which the Employers, in their
sole discretion, may set aside in anticipation of a liability under the
Plan. A Participant shall have only a contractual right to the amounts, if
any, payable under the Plan, unsecured by any assets of the Employers.
Nothing contained in the Plan shall constitute a guarantee by any of the
Employers that the assets of the Employers shall be sufficient to pay any
benefits to any person.

                                 SECTION 6

                                 Committee

      6.1. Powers of Committee. Responsibility for the day-to-day
administration of the Plan shall be vested in the Plan Administrator, which
shall be the Committee. The authority to control and manage all other
aspects of the operation and administration of the Plan shall also be
vested in the Committee. The Committee is authorized to interpret the Plan,
to establish, amend, and rescind any rules and regulations relating to the
Plan, to determine the terms and provisions of any agreements made pursuant
to the Plan, and to make all other determinations that may be necessary or
advisable for the administration of the Plan. Except as otherwise
specifically provided by the Plan, any determinations to be made by the
Committee under the Plan shall be decided by the Committee in its sole
discretion. Any interpretation of the Plan by the Committee and any
decision made by it under the Plan is final and binding on all persons.

      6.2.  Delegation by Committee.  The Committee may allocate all or any
portion of its responsibilities and powers to any one or more of its members
and may delegate all or any part of its responsibilities and powers to any
person or persons selected by it.  Any such allocation or delegation may be
revoked by the Committee at any time. Until the Committee takes action to
the contrary:

(a)   The Chief Executive Officer of the Company shall be delegated the
      power and responsibility to take all actions assigned to or permitted
      to be taken by the Committee under Section 2, Section 3, and Section
      4 (other than the powers and responsibility of the Plan
      Administrator).

(b)   The powers and responsibilities of the Plan Administrator shall be
      delegated to the Chief Administration Officer (or his or her
      delegate) of the Company, subject to such direction as may be
      provided to the Chief Administration Officer or his or

                                     -7-

<PAGE>

      her delegate from time to time by the Committee and the Chief Executive
      Officer of the Company.

      6.3. Information to be Furnished to Committee. The Employers and
Related Companies shall furnish the Committee with such data and
information as may be required for it to discharge its duties. The records
of the Employers and Related Companies as to an employee's or Participant's
employment, termination of employment, leave of absence, reemployment and
Eligible Compensation shall be conclusive on all persons unless determined
to be incorrect. Participants and other persons entitled to benefits under
the Plan must furnish the Committee such evidence, data or information as
the Committee considers desirable to carry out the Plan.

      6.4. Liability and Indemnification of Committee. No member or
authorized delegate of the Committee shall be liable to any person for any
action taken or omitted in connection with the administration of the Plan
unless attributable to his or her own fraud or willful misconduct; nor
shall the Employers be liable to any person for any such action unless
attributable to fraud or willful misconduct on the part of a director or
employee of the Employers. The Committee, the individual members thereof,
and persons acting as the authorized delegates of the Committee under the
Plan, shall be indemnified by the Employers against any and all
liabilities, losses, costs and expenses (including legal fees and expenses)
of whatsoever kind and nature which may be imposed on, incurred by or
asserted against the Committee or its members or authorized delegates by
reason of the performance of a Committee function if the Committee or its
members or authorized delegates did not act dishonestly or in willful
violation of the law or regulation under which such liability, loss, cost
or expense arises. This indemnification shall not duplicate but may
supplement any coverage available under any applicable insurance.

                                 SECTION 7

                         Amendment and Termination

      The Committee may, at any time, amend or terminate the Plan
(including the rules for administration of the Plan), subject to the
following:

(a)   Subject to the following provisions of this Section 7, no amendment
      or termination may materially adversely affect the rights of any
      Participant or beneficiary under the Plan.

(b)   The Committee may revoke the right to defer Eligible Compensation under
      the Plan.

                                      -8-

<PAGE>

(c)   The Plan may not be amended to delay the date on which benefits are
      otherwise payable under the Plan without the consent of each affected
      Participant. The Committee may amend the Plan to accelerate the date
      on which Plan benefits are otherwise payable under the Plan and
      eliminate all future deferrals under the Plan, thereby terminating
      the Plan.

(d)   The Committee may amend the Plan to modify or eliminate any
      Investment Return Rate alternative, except that any such amendment
      may not modify the Investment Return Rate with respect to periods
      prior to the adoption of the amendment.

(e)   Notwithstanding any other provision of the Plan to the contrary,
      neither the Committee nor the Board may delegate its rights and
      responsibilities under this Section 7; provided, however, that, the
      Board of Directors may, from time to time, substitute itself, or
      another committee of the Board, for the Compensation Committee under
      this Section 7.

IN WITNESS WHEREOF, ACE Limited has caused this Plan to be executed by its
duly authorized officer this ______, day of _________, 1997.

                                          ACE Limited

                                          By:__________________________

                                    -9-Exhibit 10.6

                                  ACE USA
               SUPPLEMENTAL EMPLOYEE RETIREMENT SAVINGS PLAN
               ---------------------------------------------
                          (Effective July 2, 1999)

                            Mayer, Brown & Platt
                                  Chicago

<PAGE>

                                  ACE USA
               SUPPLEMENTAL EMPLOYEE RETIREMENT SAVINGS PLAN

                                CERTIFICATE

     I,           , Executive Vice President of ACE INA Holdings Inc., hereby
certify that the attached document is a full, true and complete copy of ACE USA
SUPPLEMENTAL EMPLOYEE RETIREMENT SAVINGS PLAN, as in effect on July 2, 1999
and as presently in effect.

     Dated this       day of                     , 19   .
                -----        --------------------    ---

                                       ___________________________
                                       Executive Vice President as Aforesaid

                                                    (Seal)

                                     -2-

<PAGE>

                             TABLE OF CONTENTS

                                                                          Page

SECTION 1         General................................................... 1

           1.1.   History, Purpose and Effective Date....................... 1
           1.2.   Employers and Related Companies........................... 1
           1.3.   Plan Administration....................................... 2
           1.4.   Applicable Laws........................................... 2
           1.5.   Plan Year................................................. 2
           1.6.   Gender and Number......................................... 2
           1.7.   Notices................................................... 2
           1.8.   Form and Time of Election................................. 2
           1.9.   Evidence.................................................. 3
           1.10.  Action by Employers....................................... 3
           1.11.  Limitations on Provisions................................. 3
           1.12.  Assignment and Alienation; Forfeitures.................... 3

SECTION 2         Participation............................................. 3

           2.1.   Participation............................................. 3
           2.2.   Restricted Participation.................................. 3
           2.3.   Plan Not Contract of Employment........................... 4

SECTION 3         Supplemental Retirement Plan Benefits..................... 4

           3.1.   Participation............................................. 4
           3.2.   Amount of Supplemental Basic Plan Benefit................. 4

SECTION 4         Supplemental Savings Plan Benefits........................ 5

           4.1.   Participation............................................. 5
           4.2.   Supplemental Before-Tax Contributions..................... 5
           4.3.   Supplemental Matching Contributions....................... 5
           4.4.   Supplemental Discretionary Matching Contributions......... 6

                                   -iii-

<PAGE>

SECTION 5         Participant Accounts and Distribution of Accounts......... 6

           5.1.   Participant Accounts...................................... 6
           5.2.   Adjustment of Accounts.................................... 7
           5.3.   Investment Return Rates................................... 7
           5.4.   Participant Selection of Investment Return Rate........... 7
           5.5.   Statement of Accounts..................................... 7
           5.6    Distribution.............................................. 8
           5.7.   Distributions to Persons Under Disability................. 8
           5.8.   Unforeseen Emergency Distributions........................ 8
           5.9.   Forfeiture of Certain Accounts............................ 8

SECTION 6         Source of Benefit Payments................................ 9

           6.1.   Liability for Benefit Payments............................ 9
           6.2.   No Guarantee.............................................. 9
           6.3.   Successors................................................ 9

SECTION 7         AMENDMENT AND TERMINATION.................................10

           7.1    Amendment and Termintion..................................10
           7.2    Successors................................................10

                                   -iv-

<PAGE>

                                  ACE USA
               SUPPLEMENTAL EMPLOYEE RETIREMENT SAVINGS PLAN
               ---------------------------------------------
                         (Effective July 2, 1999)

                                 SECTION 1

                                  General

         1.1. History, Purpose and Effective Date. ACE INA Holdings Inc.
(the "Company") has established the ACE USA Employee Retirement Savings
Plan and the ACE USA Basic Employee Retirement Savings Plan to provide
retirement and other benefits to or on behalf of its eligible employees and
the employees of each Related Company (as defined in subsection 1.2) which,
with the consent of the Company, adopt one or both of the plans; and the
Company's wholly-owned subsidiary, ACE American Insurance Company (formerly
CIGNA Insurance Company), has established the ACE USA Puerto Rico Employee
Retirement Savings Plan and the ACE USA Basic Puerto Rico Employee
Retirement Savings Plan to provide retirement and other benefits to or on
behalf of its eligible employees and the employees of each Related Company
which, with the consent of the ACE American Insurance Company, adopt one or
both of the plans. (The ACE USA Employee Retirement Savings Plan, the ACE
USA Basic Employee Retirement Savings Plan, the ACE USA Puerto Rico
Employee Retirement Savings Plan and the ACE USA Basic Puerto Rico Employee
Retirement Savings Plan are collectively referred to as the "Qualified
Plans.") The Company and any Related Company which adopts this plan for the
benefit of its eligible employees are referred to below, collectively, as
the "Employers" and individually as an "Employer". Contrary to the desire
of the Company and the Employers, the amount of the benefits payable to or
on account of participants under the Qualified Plans may be limited by
reason of the application of certain provisions of the Internal Revenue
Code of 1986, as amended (the "Code"). Therefore, the Company has
established the ACE USA Supplemental Employee Retirement Savings Plan (the
"Plan") effective as of July 2, 1999 (the "Effective Date") to assure that
affected individuals will receive total retirement and other benefits in an
amount equal to the amount that they would have received under the
applicable Qualified Plan if certain limitations of the Code were not
applicable. The Plan is intended to constitute an unfunded "excess benefit
plan" within the meaning of Section 3(36) of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA"); provided, however, that, to the
extent, if any, that the Plan provides benefits which cannot be provided by
an excess benefit plan, the Plan shall constitute an unfunded plan
maintained primarily for the purpose of providing deferred compensation for
a select group of management or highly compensated employees.

         1.2. Employers and Related Companies. The term "Related Company"
means any corporation or trade or business during any period during which
it is, along with the Company, a member of a controlled group of
corporations or a controlled group of trades or businesses, as described in
sections 414(b) and 414(c), respectively, of the Code. The Company and each
Related Company, which, with the Company's consent, adopts the Plan are
referred to below collectively as the "Employers" and individually as an
"Employer".

                                    -1-

<PAGE>

         1.3. Plan Administration. The authority to control and manage the
operation and administration of the Plan shall be vested in the Committee
(the "Committee") appointed by the Board of Directors of the Company. In
controlling and managing the operation and administration of the Plan, the
Committee will have full and discretionary power and authority to interpret
and construe the provisions of the Plan and to determine the amount of
benefits and the rights or eligibility of employees or Participants (as
defined in subsections 3.1 and 4.1, respectively) under the Plan, and will
have such other power and authority as may be necessary to discharge its
duties hereunder. Any interpretation of the Plan and any decision made by
the Committee on any matter within the discretion of the Committee shall be
binding on all persons. A misstatement or other mistake of fact shall be
corrected when it becomes known, and the Committee shall make such
adjustment on account thereof as it considers equitable and practicable.
The Committee may delegate such of its ministerial or discretionary duties
and functions as it may deem appropriate to any employee or group of
employees of any Employer.

         1.4.     Applicable Laws.  The Plan shall be construed and
administered in accordance with the laws of the Commonwealth of Pennsylvania to
the extent that such laws are not preempted by the laws of the United States
of America.

         1.5. Plan Year. The "Plan Year" shall be the twelve-consecutive
month period beginning on each January 1; provided, however, that the first
Plan Year shall be a short plan year, beginning on the Effective Date and
ending December 31, 1999.

         1.6.     Gender and Number.  Where the context admits, words in one
gender shall include the other gender, words in the singular shall include the
plural and the plural shall include the singular.

         1.7. Notices. Any notice or document required to be filed with the
Committee under the Plan will be properly filed if delivered or mailed by
registered mail, postage prepaid, to the Committee, in care of the Company,
at its principal executive offices. Any notice required under the Plan may
be waived by the person entitled to notice.

         1.8. Form and Time of Elections. Unless otherwise specified
herein, any election or consent permitted or required to be made or given
by any Participant or other person entitled to benefits under the Plan, and
any permitted modification or revocation thereof, shall be made in writing
or shall be given by means of such interactive telephone system as the
Committee may designate from time to time as the sole vehicle for executing
regular transactions under the Plan (referred to generally herein as the
"Phone System"). Each Participant shall have a personal identification
number or "PIN" for purposes of executing transactions through the Phone
System, and entry by a Participant of his PIN shall constitute his valid
signature for purposes of any transaction the Committee determines may or
should be executed by means of the Phone System. Any election made through
the Phone System shall be considered submitted to the Committee on the date
it is electronically transmitted.

                                      -2-

<PAGE>

         1.9.     Evidence.  Evidence required of anyone under the Plan may be
by certificate, affidavit, document or other information which the person
acting on it considers pertinent and reliable, and signed, made or presented
by the proper party or parties.

         1.10. Action by Employers. Any action required or permitted to be
taken under the Plan by any Employer which is a corporation shall be by
resolution of its Board of Directors, or by a person or persons authorized
by its Board of Directors. Any action required or permitted to be taken by
any Employer which is a partnership shall be by a general partner of such
partnership or by a duly authorized officer thereof.

         1.11. Limitations on Provisions. The provisions of the Plan and
any benefits payable hereunder shall be limited as described herein. Any
benefit payable under the Qualified Plans shall be paid solely in
accordance with the terms and conditions of the applicable Qualified Plan
and nothing in this Plan shall operate or be construed in any way to
modify, amend, or affect the terms and provisions of the Qualified Plans.

         1.12. Assignment and Alienation; Forfeitures. The benefits payable
to any Participant or Beneficiary under the Plan may not be voluntarily or
involuntarily pledged, assigned, alienated, transferred or otherwise
anticipated. In the event a Participant or Beneficiary attempts to do so,
any amount that is subject to the purported pledge, assignment, alienation,
transfer or other anticipation shall be immediately forfeited and neither
the Participant nor his Beneficiary shall have any further rights to such
benefits.

                                 SECTION 2

                               Participation

         2.1. Participation. Participation in the Plan for purposes of
Supplemental Basic Plan Benefits and Supplemental Savings Plan Benefits
shall be determined in accordance with Sections 3 and 4, respectively. Once
an eligible employee becomes a Participant in the Plan, as long as he
continues to have an Account balance under the Plan he will remain a
Participant for all purposes under the Plan, except for purposes of the
contribution provisions of Sections 3 and 4 and the withdrawal provisions
of subsection 5.8.

         2.2. Restricted Participation. Notwithstanding any other provision
of the Plan to the contrary, if the Committee determines that participation
by one or more Participants or Beneficiaries shall cause the Plan as
applied to any Employer to be subject to Part 2, 3 or 4 of Title I of
ERISA, the entire interest of such Participant or Beneficiary under the
Plan shall, in the discretion of the Committee, be immediately paid to such
Participant or Beneficiary, as applicable, by the applicable Employer or
Employers, or shall otherwise be segregated from the Plan, and such
Participant(s) or Beneficiary(ies) shall cease to have any interest under
the Plan.

                                       -3-

<PAGE>

         2.3. Plan Not Contract of Employment. The Plan does not constitute
a contract of employment, and participation in the Plan will not give any
employee the right to be retained in the employ of any Employer nor any
right or claim to any benefit under the Plan, unless such right or claim
has specifically accrued under the terms of the Plan.

                                 SECTION 3

                      Supplemental Basic Plan Benefits

         3.1.     Participation.  Subject to the terms and conditions of the
Plan, each employee of an Employer shall become a "Participant" in the Plan for
purposes of Supplemental Basic Plan Benefits on the first day on which all of
the following conditions are satisfied:

         (a)      he is a participant in the ACE USA Basic Employee
                  Retirement Savings Plan or he is a participant in the ACE
                  USA Puerto Rico Basic Employee Retirement Savings Plan;

         (b)      his salary grade is 54 level or above (or such other
                  comparable classification designated by the Employer); and

         (c)      his benefits under either the ACE USA Basic Employee
                  Retirement Savings Plan or the ACE USA Puerto Rico Basic
                  Employee Retirement Savings Plan are limited by either or
                  both of sections 415 and 401(a)(17) of the Code.

         3.2. Amount of Supplemental Basic Plan Benefit. For any Plan Year,
a Participant shall be credited with a "Supplemental Basic Plan Benefit"
which consists of an amount equal to the difference, if any, between (a)
the Employer contributions that would have been contributed on behalf of
the Participant to the ACE USA Basic Employee Retirement Savings Plan or to
the ACE USA Puerto Rico Basic Employee Retirement Savings Plan for that
Plan Year, in accordance with the terms thereof determined without regard
to the limitations of sections 401(a)(17) or 415 of the Code and (b) the
amount of the Employer contributions actually made to the ACE USA Basic
Employee Retirement Savings Plan or to the ACE USA Puerto Rico Basic
Employee Retirement Savings Plan on behalf of the Participant. Credits of
the Supplemental Basic Plan Benefit to the Participant's Supplemental Basic
Plan Account pursuant to this subsection 3.2 shall be made at the same time
that Employer contributions would otherwise have been credited to his
accounts under the ACE USA Basic Employee Retirement Savings Plan or the
ACE USA Puerto Rico Basic Employee Retirement Savings Plan, as applicable.

                                       -4-

<PAGE>

                                 SECTION 4

                     Supplemental Savings Plan Benefits

         4.1.     Participation.  Subject to the terms and conditions of the
Plan, each employee of an Employer shall become a "Participant" in the Plan for
purposes of Supplemental Savings Plan Benefits on the first day on which all of
the following conditions are satisfied:

         (a)      he is a participant in the ACE USA Employee Retirement
                  Savings Plan or a participant in the ACE USA Puerto Rico
                  Employee Retirement Savings Plan;

         (b)      his salary grade is 54 level or above (or such other
                  comparable classification designated by the Employer); and

         (c)      his benefits under either the ACE USA Employee Retirement
                  Savings Plan or the ACE USA Puerto Rico Employee
                  Retirement Savings Plan are limited by any or all of
                  sections 415, 401(a)(17), 402(g), 401(k) or 401(m) of the
                  Code.

         A "Participant's Supplemental Savings Plan Benefit" consists of
the amounts credited to his accounts, if any, pursuant to subsections 4.2
through 4.4.

         4.2. Supplemental Before-Tax Contributions. For any Plan Year, in
the event the Participant's before-tax elective contributions to the ACE
USA Employee Retirement Savings Plan are limited by the provisions of
sections 401(a)(17), 401(k)(3), 402(g) or 415 of the Code, as applicable,
his compensation for the Plan Year will continue to be reduced by, and the
Participant's Supplemental Before-Tax Account credited with, an amount
equal to the amount of before-tax elective contributions that would have
been made under the ACE USA Employee Retirement Savings Plan had the
provisions of sections 401(a)(17), 401(k)(3), 402(g) or 415 of the Code, as
applicable, not applied to him. Credits to the Participant's Supplemental
Before-Tax Account pursuant to this subsection 4.2 shall be made at the
same time that before-tax elective contributions would otherwise have been
credited to his accounts under the ACE USA Employee Retirement Savings
Plan. A Participant's election to make before-tax contributions under the
ACE USA Employee Retirement Savings Plan shall be deemed to be an election
to make elective salary deferral contributions under the Plan, and such
election shall remain in effect until modified or revoked by the individual
in accordance with the terms of the Plan. Notwithstanding the foregoing
provisions of this section 4.2, salary reductions shall continue and an
amount shall be credited to the Participant's Supplemental Before-Tax
Account in accordance with this section 4.2 (and Supplemental Matching
Contributions and Supplemental Discretionary Matching Contributions, if
any, shall be credited to the Participant's applicable accounts in
accordance with sections 4.3 and 4.4) for a Plan Year only if the
Participant's before-tax elective contributions to the ACE USA Employee
Retirement Savings Plan have reached the maximum amount permitted under
section 402(g) of the Code or the maximum elective contributions permitted
under the Plan, in accordance with Treas. Reg. section 1.401(k)(1)(e)(6)(iv);
and the Committee shall require that the Participant elect (and not reduce) in
the Plan Year the maximum

                                      -5-

<PAGE>

deferral percentage permitted under the ACE USA Employee Retirement Savings
Plan in order to receive a Supplemental Savings Plan Benefit for the Plan
Year under this Plan, and shall establish such other administrative
procedures as are necessary to comply with such regulations.

         4.3. Supplemental Matching Contributions. Subject to the
requirements of section 4.2, for any Plan Year, a Participant's
Supplemental Matching Account shall be credited with an amount equal to the
difference, if any, between (a) the matching contributions that would have
been contributed on behalf of the Participant to the ACE USA Employee
Retirement Savings Plan for that Plan Year, in accordance with the terms
thereof and based on his before-tax elective contributions under the ACE
USA Employee Retirement Savings Plan or based on his after-tax elective
contributions under the ACE USA Puerto Rico Employee Retirement Savings
Plan, as applicable, determined without regard to the limitations of
sections 401(a)(17), 401(k)(3), 401(m), 402(g) or 415 of the Code, and (b)
the amount of matching contributions actually made to the ACE USA Employee
Retirement Savings Plan or the ACE USA Puerto Rico Employee Retirement
Savings Plan, as applicable, on behalf of the Participant. Credits to the
Participant's Accounts pursuant to this subsection 4.3 shall be made at the
same time that matching contributions would otherwise have been credited to
his accounts under either the ACE USA Employee Retirement Savings Plan or
the ACE USA Puerto Rico Employee Retirement Savings Plan, as applicable.

         4.4. Supplemental Discretionary Matching Contributions. Subject to
the requirements of section 4.2, for any Plan Year, a Participant's
Supplemental Discretionary Matching Account shall be credited with an
amount equal to the difference, if any, between (a) the discretionary
matching contributions that would have been contributed on behalf of the
Participant to the ACE USA Employee Retirement Savings Plan for that Plan
Year, in accordance with the terms thereof and based on his before-tax
salary deferral election under the ACE USA Employee Retirement Savings Plan
or based on his elective after-tax contribution under the ACE USA Puerto
Rico Employee Retirement Savings Plan, as applicable, determined without
regard to the limitations of sections 401(a)(17), 401(k)(3), 401(m), 402(g)
or 415 of the Code, and (b) the amount of discretionary matching
contributions actually made to the ACE USA Employee Retirement Savings Plan
or the ACE USA Puerto Rico Employee Retirement Savings Plan, as applicable,
on behalf of the Participant. Credits to the Participant's Accounts
pursuant to this subsection 4.4 shall be made at the same time that
discretionary matching contributions would otherwise have been credited to
his accounts under either the ACE USA Employee Retirement Savings Plan or
the ACE USA Puerto Rico Employee Retirement Savings Plan, as applicable.

                                 SECTION 5

             Participant Accounts and Distribution of Accounts

         5.1.  Participant Accounts.  The Committee shall maintain the
following bookkeeping "Accounts" in the name of each person who is a
Participant in the Plan:

                                       -6-

<PAGE>

         (a)      a "Supplemental Basic Account" in the name of each
                  Participant which shall reflect Supplemental Basic
                  Contributions, if any, made on his behalf;

         (b)      a "Supplemental Before-Tax Account" in the name of each
                  Participant which shall reflect Supplemental Before-Tax
                  Contributions, if any, made on his behalf;

         (c)      a "Supplemental Matching Account" in the name of each
                  Participant which shall reflect Supplemental Matching
                  Contributions, if any, made on his behalf;

         (d)      a "Supplemental Discretionary Matching Account" in the
                  name of each Participant which shall reflect Supplemental
                  Discretionary Matching Contributions, if any, made on his
                  behalf.

         5.2.  Adjustment of Accounts.  Each Participant's Accounts shall be
adjusted in accordance with this Section 5 in a uniform manner as of each
Valuation Date, as follows:

         (a)      first, charge to the Account balance the amount of any
                  distributions under the Plan with respect to that Account
                  that have not previously been charged;

         (b)      then, adjust the Account balance for the applicable
                  Investment Return Rate(s); and

         (c)      then, credit to the Account balance the amount to be
                  credited to that Account in accordance with subsections
                  3.2 and 4.2 through 4.4 that have not previously been
                  credited.

Except as otherwise designated by the Committee, the term "Valuation Date"
means each business day of the year.

         5.3. Investment Return Rates. The "Investment Return Rate(s)" with
respect to the Account(s), or portions of the Supplemental Account(s), of
any Participant for any period shall be the Investment Return Rate(s)
elected by the individual in accordance with subsection 5.4 from among such
investment alternatives (if any) for that period which, in the discretion
of the Committee, are offered from time to time under this paragraph 5.3.

         5.4. Participant Selection of Investment Return Rate. The
Investment Return Rate alternatives under the Plan, and a Participant's
ability to choose among Investment Return Rate alternatives, shall be
determined in accordance with rules established by the Committee from time
to time; provided, however, that the Company may not modify the Investment
Return Rate with respect to periods prior to the adoption of such
modification.

         5.5.     Statement of Accounts.  As soon as practicable after the last
day of each Plan Year, and at such other times as determined by the Committee,
the Committee will cause to be delivered to each Participant a statement of the
balance of his Accounts as of that day.

                                      -7-

<PAGE>

         5.6. Distribution. Subject to the terms and conditions of the
Plan, the Supplemental Basic Plan Benefit and the Supplemental Savings Plan
Benefit to which a Participant or Beneficiary is entitled shall be paid to
him as soon as practicable following his Termination Date in one lump sum
cash payment. In the event of a Participant's death, any Participant
Accounts which have not yet been paid to the Participant shall be paid to
one or more Beneficiaries. A Participant's "Beneficiary" shall be the legal
or natural person designated by the Participant by writing filed with the
Committee. If no Beneficiary is designated on the date of the Participant's
death, or if the designated Beneficiary predeceases the Participant, the
Participant's Account balances shall be paid to the Participant's estate.
The Account shall be paid to the Beneficiary (or estate) in a lump sum
payment as soon as practicable after the Participant's date of death. A
Participant's "Termination Date" is the date on which his employment with
the Employer and the Related Companies is terminated for any reason.

         5.7. Distributions to Persons Under Disability. In the event a
Participant or his Beneficiary is declared incompetent and a conservator or
other person legally charged with the care of his person or of his estate
is appointed, any benefit to which such Participant or Beneficiary is
entitled under the Plan shall be paid to such conservator or other person
legally charged with the care of his person or of his estate.

         5.8. Unforeseen Emergency Distributions. Subject to such terms and
conditions as the Committee may from time to time impose in its sole
discretion, upon written request of a Participant and the showing by the
Participant of an Unforeseen Emergency (as defined below), the Committee
may authorize payment of all or a portion of the Participant's Account
balance and/or accelerate the payment of any installment payments being
made from the Plan, but only to the extent reasonably necessary to satisfy
the Participant's Unforeseen Emergency. For purposes of the Plan, an
"Unforeseen Emergency" means an unanticipated emergency that is caused by
an event beyond the Participant's control and that would result in severe
financial hardship to the Participant if early or accelerated distribution
of the Participant's Account balance were not permitted. The Committee
shall have the sole discretion to determine all matters relating to
Unforeseen Emergency distributions.

         5.9. Forfeiture of Certain Accounts. Notwithstanding any provision
of the Plan to the contrary, in no event shall any amount attributable to
the Participant's Supplemental Basic Plan Account, Supplemental Matching
Contribution Account or Supplemental Discretionary Matching Contribution
Account be payable to or on account of a Participant whose Termination Date
occurs prior to the Participant's completion of twelve consecutive months
of employment with an Employer for any reason other than the death of the
Participant. For purposes of determining whether a Participant has
completed twelve consecutive months of employment with an Employer, an
individual who immediately prior to the Effective Date was employed by
CIGNA Corporation or one of its subsidiaries (the "CIGNA Group"), and who
pursuant to the terms of the Acquisition Agreement dated as of January 11,
1999 between CIGNA Corporation, CIGNA Holdings, Inc. and ACE Limited (the
"Acquisition Agreement") became an employee of an Employer or a Related
Company (an "Acquisition Employee") shall be credited with service for his
employment with the CIGNA Group. An individual who was employed by the
CIGNA

                                        -8-

<PAGE>

Group immediately before the Effective Date who does not become an employee
of an Employer or Related Company pursuant to the terms of the Acquisition
Agreement (and who is therefore not an Acquisition Employee) but who
subsequently becomes an employee of an Employer or Related Company, shall
be treated as a new employee for all purposes of the Plan.

                                 SECTION 6

                         Source of Benefit Payments

         6.1. Liability for Benefit Payments. The amount of any benefit
payable under the Plan shall be paid from the general revenues of the
Employer of the Participant with respect to whom the benefit is payable;
provided, however, that if a Participant has been employed by more than one
Employer, the portion of his Plan benefits payable by any such Employer
shall be that portion accrued while the Participant was employed by that
Employer, and earnings on such portion. An Employer's obligation under the
Plan shall be reduced to the extent that any amounts due under the Plan are
paid from one or more trusts, the assets of which are subject to the claims
of general creditors of the Employer or any affiliate thereof; provided,
however, that nothing in the Plan shall require the Company or any Employer
to establish any trust to provide benefits under the Plan.

         6.2. No Guarantee. Neither a Participant nor any other person
shall, by reason of the Plan, acquire any right in or title to any assets,
funds or property of the Employers whatsoever, including, without
limitation, any specific funds, assets, or other property which the
Employers, in their sole discretion, may set aside in anticipation of a
liability under the Plan. A Participant shall have only a contractual right
to the amounts, if any, payable under the Plan, unsecured by any assets of
the Employers. Nothing contained in the Plan shall constitute a guarantee
by any of the Employers that the assets of the Employers shall be
sufficient to pay any benefits to any person.

         6.3. Successors, The obligations of the Company and each Employer
under the Plan shall be binding on any assignee or successor in interest
thereto. Prior to any merger, consolidation or sale of assets, the Company,
or if applicable, the Employer, shall require any such successor to
expressly assume all of the Company's, or if applicable, all of the
Employer's, obligations under the Plan.

                                      -9-

<PAGE>

                                 SECTION 7

                         Amendment and Termination

         7.1.     Amendment and Termination.  The Company may, at any time,
amend or terminate the Plan subject to the following:

                  (a)           Subject to the following provisions of this
                                subsection 7.1, no amendment or termination
                                shall materially adversely affect the
                                rights of any Participant or Beneficiary
                                with respect to such Participant's Accounts
                                under the Plan, determined as of the date
                                of such amendment or termination, without
                                the consent of the Participant or
                                Beneficiary, unless required to comply with
                                applicable law.

                  (b)           The Company may prospectively eliminate the
                                right to have amounts credited to any
                                Account pursuant to the provisions of
                                subsections 3.2, 4.2, 4.3 or 4.4, or reduce
                                the amount which is required to be credited
                                to any such Account pursuant to those
                                provisions.

                  (c)           The Plan may not be amended to delay the
                                date on which benefits are otherwise
                                payable under the Plan without the consent
                                of each affected Participant. The Company
                                may amend the Plan to accelerate the date
                                on which Plan benefits are otherwise
                                payable under the Plan, thereby terminating
                                the Plan.

                  (d)           The Company may amend the Plan to modify or
                                eliminate any Investment Return Rate
                                alternative, except that any such amendment
                                may not modify the Investment Return Rate
                                with respect to periods prior to the
                                adoption of the amendment.

         7.2.     Successors.  The obligations of the Company and each Employer
under the Plan shall be binding on any assignee or successor in interest
thereto.  Prior to any merger, consolidation or sale of assets, the Company,
or if applicable, the Employer, shall require any such successor to expressly
assume all of the Company's, or if applicable, all of the Employer's,
obligations under the Plan.

                                     -10-

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