Exhibit 10(ii)
 
                          NORTHERN TRUST CORPORATION
                          MANAGEMENT PERFORMANCE PLAN
 
I.     Purposes of Plan
 
       The purposes of the Northern Trust Corporation Management Performance
       Plan (the "Plan") are to (i) promote the achievement of superior
       financial and operating performance of Northern Trust Corporation and its
       subsidiaries (the "Corporation"), and to further the objective of
       delivering unrivaled service quality to clients through the awarding of
       annual cash incentives to participants in the Plan ("Participants"), (ii)
       reward Participants who make significant contributions to the
       Corporation's success, enabling them to share in this success, (iii)
       provide the Corporation a means to attract, motivate and retain certain
       key senior officers and (iv) qualify any compensation paid under the Plan
       for tax deductibility under Section 162(m) of the Internal Revenue Code
       of 1986, as amended, to the extent deemed appropriate by the Compensation
       and Benefits Committee (the "Committee") of the Board of Directors (the
       "Board") of the Corporation.
 
II.    Administration
 
       The Plan shall be administered by the Committee. The Committee shall have
       authority for selecting Participants and determining final award amounts
       to be paid to Participants. Subject to the express provisions of the
       Plan, the Committee shall be authorized to interpret the Plan and to
       establish, amend and rescind any rules and regulations relating to the
       Plan and to make all other determinations deemed necessary or advisable
       for the proper administration of the Plan. The determinations of the
       Committee in the proper administration of the Plan shall be conclusive
       and binding.
 
III.   Term
 
       The Plan shall be effective as of January 1, 1999 (the "Effective Date"),
       subject to approval by the Corporation's shareholders at the 1999 annual
       meeting of Stockholders. The Plan shall remain in effect until terminated
       by the Board.
 
IV.    Eligibility and Participation
 
       Eligibility to participate in the Plan shall be limited to any key
       officer of the Corporation at or above the level of an executive vice
       president. Participants in the Plan shall be selected annually by the
       Committee from those key senior officers eligible to participate in the
       Plan.
 
V.     Performance Objective
 
       The Plan's performance objective (the "Performance Objective") shall be
       established with reference to the Corporation's consolidated net income
       as determined in accordance with generally accepted accounting
       principles.
 
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VI.    Maximum Award Funding Opportunity
 
       The maximum award funding opportunity in any fiscal year (the "Funding
       Opportunity") for the Chairman and Chief Executive Officer, if a
       Participant for such fiscal year, shall be 0.6% of the Corporation's
       consolidated net income for that fiscal year. The Funding Opportunity for
       the President and Chief Operating Officer, if a Participant for such
       fiscal year, shall be 0.4% of the Corporation's consolidated net income
       for that fiscal year. The Funding Opportunity for any other Participant
       shall be 0.3% of the Corporation's consolidated net income for that
       fiscal year.
 
VII.   Award Determination
 
       As soon as practicable (but in no event later than 90 days) following
       completion of a fiscal year, the Committee shall (i) determine each
       Participant's Funding Opportunity for that fiscal year solely on the
       basis of the Performance Objective and (ii) approve each Participant's
       actual award for that fiscal year on a discretionary basis as provided
       below. The Committee shall have the right to limit or reduce a
       Participant's actual award in any fiscal year below the Funding
       Opportunity in its sole discretion based on an assessment of individual
       contribution, performance relative to performance expectations,
       competitive levels of compensation and corporate performance, but it
       shall not increase a Participant's award in any fiscal year above the
       Funding Opportunity.
 
VIII.  Payment of Awards
 
       Awards for a fiscal year will be paid in cash (or deferred at the
       election of a Participant as provided in Section IX (b) below) as soon as
       practicable following the Committee's determination of awards for that
       fiscal year.
 
IX.    Other Provisions
 
       The following miscellaneous provisions are applicable to the Plan:
 
       (a)  Awards paid under the provisions of the Plan are considered
            pensionable earnings when paid.
 
       (b)  Awards under the Plan may be deferred into the Northern Trust
            Corporation Deferred Compensation Plan. Deferred amounts will be
            considered pensionable earnings under the provisions of the
            Supplemental Pension Plan.
 
       (c)  Termination of employment of a Participant during the Plan year,
            either voluntarily, or involuntarily with cause for reasons other
            than death, disability, or retirement, shall result in immediate
            exclusion from the Plan.
 
       (d)  Except in the event of the death of a Participant, the rights and
            interests of a Participant under the Plan shall not be assigned,
            encumbered, or transferred.
 
       (e)  Each Participant shall designate a beneficiary (the "Designated
            Beneficiary") to receive the award, if any, allocated to a
            Participant, in the event of such Participant's death. If no
            Designated Beneficiary survives the Participant, it shall be the
            surviving spouse of the Participant or, if there is no surviving
            spouse, it shall be the Participant's estate.
 
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       (f)  No employee or other person shall have any claim or right to be
            granted an award under the Plan. Neither the Plan, nor any action
            taken thereunder, shall be construed as giving the Participant or
            other person any right to be retained in the employ of the
            Corporation.
 
       (g)  The Corporation shall have the right to deduct from all payments
            made under the Plan any taxes required by law to be withheld with
            respect to such payment.
 
       (h)  All questions pertaining to the validity, construction and
            administration of the Plan and any award hereunder shall be
            determined in conformity with the laws of the State of Illinois.
 
       (i)  The Board, in its sole discretion, may modify or amend any or all of
            the Plan at any time and, without notice, may suspend or terminate
            the Plan entirely. However, no such modification or amendment may,
            without the consent of the Participant, reduce the right of a
            Participant to a payment or distribution to which the Participant is
            entitled by reason of an outstanding award.
 
       (j)  All obligations of the Corporation under the Plan with respect to
            awards granted hereunder shall be binding on any successor to the
            Corporation, whether the existence of such successor is the result
            of a direct or indirect purchase, merger, consolidation, or
            otherwise, of all or substantially all of the business or assets of
            the Corporation.
 
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