AON CORP
10-Q, 1997-05-15
ACCIDENT & HEALTH INSURANCE
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q


          X         QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
        -----           OF THE SECURITIES EXCHANGE ACT OF 1934

                  FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1997

                                       OR

        -----     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934.

                          Commission file number 1-7933

                                 Aon Corporation
             (Exact Name of Registrant as Specified in its Charter)


          DELAWARE                                     36-3051915
(State or Other Jurisdiction of                      (IRS Employer
Incorporation or Organization)                       Identification No.)


  123 N. WACKER DR., CHICAGO, ILLINOIS                          60606
(Address of Principal Executive Offices)                      (Zip Code)


          (312) 701-3000
(Registrant's Telephone Number)


Indicate  by check  mark  whether  the  Registrant:  (1) has filed  all  reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
Registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. YES X  NO
                                             ---   ---

Number of shares of common stock outstanding:

                                                       No. Outstanding
          Class                                         as of 3-31-97
          -----                                        ---------------
$1.00 par value Common                                   166,900,547
(Adjusted to reflect a three-for-two
stock split payable May 14, 1997 to
stockholders of record on May 1, 1997)
                                      
                                     - 1 -
<PAGE>
<TABLE>
<CAPTION>
                                     PART 1
                             Financial Information
                                Aon CORPORATION
            Condensed Consolidated Statements of Financial Position
            -------------------------------------------------------

        (millions)                                                  As of           As of
Assets                                                         March 31, 1997   Dec. 31, 1996
                                                               --------------  --------------
                                                                 (UNAUDITED)
Investments
<S>                                                            <C>             <C>    
 Fixed maturities - available for sale                         $     2,733.9   $     2,826.1
 Equity securities at fair value
  Common stocks                                                        346.6           393.8
  Preferred stocks                                                     364.3           485.3
 Mortgage loans on real estate                                          24.6            29.0
 Real estate (net of accumulated depreciation)                          14.2            17.8
 Policy loans                                                           58.2            58.2
 Other long-term investments                                           137.1           136.2
 Short-term investments                                              1,381.9         1,266.3
                                                               --------------  --------------
    Total investments                                                5,060.8         5,212.8



Cash                                                                 1,269.6           410.1




Receivables

 Insurance brokerage and consulting
  services                                                           4,763.8         3,565.9
 Premiums and other                                                  1,009.4           989.3
 Accrued investment income                                              74.2            69.2
                                                               --------------  --------------
    Total receivables                                                5,847.4         4,624.4


 Deferred Policy Acquisition Costs                                     575.3           598.8
 Cost of Insurance and Renewal Rights Purchased                        533.0           537.5
 Excess of Cost over Net Assets Purchased                            2,255.1         1,060.2
 Property and Equipment at Cost (net of                                439.1           323.2
  accumulated depreciation)
 Assets Held Under Special Contracts                                    85.9            87.3
 Other Assets                                                        1,250.5           868.4
                                                               --------------  --------------
    Total Assets                                               $    17,316.7   $    13,722.7
                                                               ==============  ==============



        (millions)                                                  As of           As of
Liabilities and Equity                                         March 31, 1997   Dec. 31, 1996
                                                               --------------  --------------
                                                                 (UNAUDITED)
Policy Liabilities
 Future policy benefits                                        $     1,080.5   $     1,079.4
 Policy and contract claims                                            840.5           840.9
 Unearned and advance premiums                                       1,979.9         1,925.2
 Other policyholder funds                                              558.1           514.1
                                                               --------------  --------------
    Total Policy Liabilities                                         4,459.0         4,359.6

General Liabilities
 Insurance premiums payable                                          5,967.9         4,143.7
 Commissions and general expenses                                    1,068.4           776.8
 Short-term borrowings                                                 345.4           213.4
 Notes payable                                                         572.6           475.1
 Debt guarantee of ESOP                                                 46.1            46.1
 Liabilities held under special contracts                               85.9            87.3
 Other liabilities                                                   1,225.4           737.8
                                                               --------------  --------------
    Total Liabilities                                               13,770.7        10,839.8

Commitments and Contingent Liabilities
Redeemable Preferred Stock                                              50.0            50.0

Company-obligated Mandatorily Redeemable
 Preferred Capital Securities of Subsidiary
 Trust holding solely the Company's Securities                         800.0              --

Stockholders' Equity
 Preferred stock - $1 par value                                          5.5             5.5
 Common stock - $1 par value                                           171.1           114.1
 Paid-in additional capital                                            445.8           475.4
 Net unrealized investment gains                                       119.0           153.1
 Net foreign exchange gains(losses)                                    (34.6)            1.0
 Retained earnings                                                   2,272.4         2,356.8
 Less - Treasury stock at cost                                        (108.3)         (121.5)
       Deferred compensation                                          (174.9)         (151.5)
                                                               --------------  --------------
    Total Stockholders' Equity                                       2,696.0         2,832.9
                                                               --------------  --------------

                                                               --------------  --------------
    Total Liabilities and Equity                               $    17,316.7   $    13,722.7
                                                               ==============  ==============

<FN>
See the accompanying notes to the condensed consolidated financial statements.
</FN>
</TABLE>
                                     - 2 -
<PAGE>
<TABLE>
<CAPTION>
                                 Aon CORPORATION
                   CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                   -----------------------------------------------
                                   (Unaudited)

                                                                      First Quarter Ended
                                                                  ---------------------------
(millions except per share data)                                    March 31,     March 31,
                                                                      1997           1996
                                                                  ------------   ------------
Revenue
<S>                                                               <C>            <C>    
  Brokerage commissions and fees ...............................  $     841.7    $     468.0
  Premiums earned ..............................................        384.4          378.0
  Net investment income ........................................        115.8           84.7
  Realized investment gains ....................................          2.4              -
  Other income .................................................         10.0           11.4
                                                                  ------------   ------------
    Total revenue earned .......................................      1,354.3          942.1
                                                                  ------------   ------------

Benefits and Expenses
  Commissions and general expenses .............................        889.5          529.4
  Benefits to policyholders ....................................        205.2          186.0
  Interest expense .............................................         14.6            9.2
  Amortization of deferred policy
   acquisition costs ...........................................         53.5           53.1
  Amortization of intangible assets ............................         31.3           18.8
  Special charges...............................................        145.0             --
                                                                  ------------   ------------
    Total Benefits and Expenses ................................      1,339.1          796.5
                                                                  ------------   ------------

Income From Continuing Operations Before
  Income Tax and Minority Interest .............................         15.2          145.6
   Provision for income tax ....................................          5.7           49.1
                                                                  ------------   ------------

Income From Continuing Operations Before Minority Interest .....          9.5           96.5
  Minority Interest - 8.205% mandatorily redeemable
   preferred capital securities................................          (8.8)             -
                                                                  ------------   ------------
Income From Continuing Operations...............................          0.7           96.5
Income From Discontinued Operations - Net of Tax ...............            -           22.4
                                                                  ------------   ------------
Net Income .....................................................  $       0.7    $     118.9
                                                                  ============   ============

Net Income (Loss) Available for Common Stockholders (1).........  $      (2.7)   $     113.8      
                                                                   ============   ============

Per Share: (2)
- --------------

Income (loss) from continuing operations (1)....................  $     (0.02)          0.56
Income from discontinued operations.............................            -    $      0.13
                                                                  ------------   ------------
Net income (loss) (1)...........................................  $     (0.02)   $      0.69
                                                                  ============   ============

Cash dividends paid on common stock (2).........................  $      0.24    $      0.23
                                                                  ============   ============

Average common and common equivalent shares
    outstanding (2)                                                     169.2          164.6
                                                                  ------------   ------------

<FN>
(1)    Includes the effect of $3.4  million of dividends  incurred on the 8% and
       redeemable preferred stock and $5.1  million of  dividends  incurred  on 
       the 8%,  6.25% and redeemable preferred stock in first  quarter  ended 
       March 31, 1997 and 1996, respectively.
(2)    Reflects the three-for-two stock split effective May 1, 1997.

See the accompanying notes to the condensed consolidated financial statements.
</FN>
</TABLE>

                                     - 3 -
<PAGE>
<TABLE>
<CAPTION>
                                 Aon CORPORATION
                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                  (Unaudited)

(MILLIONS)
                                                                                             FIRST QUARTER ENDED
                                                                                         ----------------------------
                                                                                           MARCH 31,       MARCH 31,
                                                                                             1997            1996
                                                                                         ------------    ------------

<S>                                                                                         <C>             <C>  
CASH PROVIDED BY OPERATING ACTIVITIES ...............................................    $     307.8     $     242.7
                                                                                         ------------    ------------

CASH FLOWS FROM INVESTING ACTIVITIES:

  Sale (purchase) of short term investments - net (1)................................          826.2          (236.4)
  Sale or maturity of fixed maturities
    Available for sale - Maturities .................................................           20.6            46.9
                         Calls and Prepayments ......................................           17.1            92.4
                         Sales ......................................................          395.7           325.2
  Sale of equity investments ........................................................          348.1           246.0
  Sale or maturity of other invesments ..............................................            1.6            69.9
  Purchase of fixed maturities - available for sale .................................         (400.9)         (305.0)
  Purchase of equity investments ....................................................         (185.0)         (191.6)
  Purchase of other investments .....................................................          (13.7)         (151.5)
  Acquisition of subsidiaries .......................................................       (1,289.8)           (7.2)
  Property and equipment and other ..................................................          (28.6)          (15.9)
                                                                                         ------------    ------------
                           CASH USED BY INVESTING ACTIVITIES ........................         (308.7)         (127.2)
                                                                                         ------------    ------------

CASH FLOWS FROM FINANCING ACTIVITIES:
  Treasury stock transactions - net .................................................           10.9            12.1
  Issuance of short-term borrowings - net ...........................................          124.0             1.5
  Sale of mandatorily redeemable preferred capital securities .......................          800.0            --
  Repayment of long-term debt .......................................................          (51.1)           (2.1)
  Interest sensitive life, annuity and investment contract deposits .................           37.0           266.5
  Interest sensitive life, annuity and investment contract withdrawals ..............             --          (426.4)
  Retirement of preferred stock .....................................................             --           (14.1)
  Cash dividends to stockholders ....................................................          (42.4)          (42.2)
                                                                                         ------------    ------------
                           CASH PROVIDED (USED) BY FINANCING ACTIVITIES .............          878.4          (204.7)
                                                                                         ------------    ------------

EFFECT OF EXCHANGE RATE CHANGES ON CASH .............................................          (18.0)           (0.6)
INCREASE (DECREASE) IN CASH .........................................................          859.5           (89.8)
CASH AT BEGINNING OF PERIOD .........................................................          410.1           115.3
                                                                                         ------------    ------------
CASH AT END OF PERIOD ...............................................................    $   1,269.6     $      25.5
                                                                                         ============    ============

<FN>
(1) First quarter 1997 includes $ 734.0 million of cash acquired from the  acquisition 
    of Alexander & Alexander Services Inc.

See the accompanying notes to condensed consolidated financial statements.
</FN>
</TABLE>

                                     - 4 -
<PAGE>
                                 Aon CORPORATION

            NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS


1.       Statement of Accounting Principles
         ----------------------------------

         The financial  results included in this report are stated in conformity
         with  generally  accepted  accounting  principles and are unaudited but
         include all normal recurring  adjustments which the Registrant  ("Aon")
         considers  necessary  for a fair  presentation  of the results for such
         periods.  These  interim  figures  are not  necessarily  indicative  of
         results for a full year as further discussed below.

         Refer to the consolidated  financial statements and notes in the Annual
         Report  to  Stockholders  for the  year  ended  December  31,  1996 for
         additional  details  of  Aon's  financial   position,   as  well  as  a
         description  of the  accounting  policies  which  have  been  continued
         without  material  change.  The details  included in the notes have not
         changed  except as a result of normal  transactions  in the interim and
         the events mentioned in the footnotes below.

2.       Stock Split
         -----------

         On March 21, 1997, Aon's board of directors  authorized a three-for-two
         stock split,  payable in the form of a stock  dividend,  of Aon's $1.00
         par value common stock, with approximately 57 million shares payable on
         May 14, 1997 to  stockholders of record on May 1, 1997. The stock split
         has been  retroactively  reflected  in the  March  31,  1997  condensed
         statement of consolidated financial position, (but not the December 31,
         1996),   by   increasing   common  stock  and   decreasing   additional
         paid-in-capital  by $57 million.  All  references  in the  accompanying
         financial  statements  to the  number  of common  shares  and per share
         amounts have been retroactively restated to reflect the stock split.

3.       Statements of Financial Accounting Standards (SFAS)
         ---------------------------------------------------

         In February  1997,  the  Financial  Accounting  Standards  Board (FASB)
         issued Statement No. 128 (Earnings per Share).  This Statement  changes
         the  standards for  computing  earnings per share (EPS).  Under the new
         requirements for calculating  primary EPS, the dilutive effect of stock
         options will be excluded.  The  provisions of this  Statement are to be
         applied after December 15, 1997, and require retroactive restatement of
         all prior periods presented. Aon anticipates adopting this statement in
         its December 31, 1997 financial statements as required.  Implementation
         of this  Statement is not  expected to have a material  effect on Aon's
         financial statements.

         In first quarter 1997, Aon adopted  Statement No. 125  (Accounting  for
         Transfers  and  Servicing of Financial  Assets and  Extinguishments  of
         Liabilities) in its financial statements as required. Implementation of
         this  Statement  did not have a  material  effect  on  Aon's  financial
         statements.

4.       Capital Stock
         -------------

         In first quarter 1997, Aon reissued 393,700 shares of common stock from
         treasury for employee benefit plans. Aon purchased 26,000 shares of its
         common stock at a total cost of $1.1 million during first quarter 1997.
         In  addition,  Aon  reissued  165,100  shares of common  stock  held in
         connection with business combinations. There were 4.3 million shares of
         common stock held in treasury at March 31, 1997.
         
                                     - 5 -                                      
<PAGE>
5.       Capital Securities
         ------------------

         In January 1997, Aon created Aon Capital A, a statutory  business trust
         created for the  purpose of issuing  mandatorily  redeemable  preferred
         capital  securities  (capital  securities).  Aon  Capital A issued $800
         million of 8.205% capital securities in January 1997. The proceeds from
         the issuance of the capital  securities  were used to finance a portion
         of Aon's  acquisition of Alexander and Alexander  Services Inc.  (A&A).
         The capital  securities are subject to mandatory  redemption on January
         1, 2027 or, are redeemable in whole,  but not in part, at the option of
         Aon upon the occurrence of certain events.  The capital  securities are
         categorized  on  the  condensed  consolidated  statement  of  financial
         position as "Company-obligated Mandatorily Redeemable Preferred Capital
         Securities   of   Subsidiary   Trust   holding   solely  the  Company's
         Securities." The after-tax  interest incurred on the capital securities
         is  reported  as  minority  interest  on  the  condensed   consolidated
         statements of operations.

6.       Business Combinations
         ---------------------

         In first quarter  1997,  Aon  completed  its  acquisition  of A&A for a
         purchase price of  approximately  $1.2 billion.  The acquisition of A&A
         was  accounted  for by the  purchase  method  and was  financed  by the
         issuance of the capital  securities,  commercial paper, and by internal
         funds.  Results  have been  included  in Aon's  consolidated  financial
         statements since January 1, 1997. While A&A was acquired in early 1997,
         the  purchase  valuation  has  not  yet  been  completed. Preliminary 
         purchase accounting liabilities of approximately $200 million were 
         recorded  as of March 31,  1997  primarily  related to  severance  and
         related costs, and the consolidation of real estate space. Preliminary
         intangible  assets  of  approximately  $1.2  billion,  created  by the
         acquisition,  have been evaluated  indicating an estimated useful life
         of twenty-five years.

         If the A&A  acquisition  had been  consummated on January 1, 1996, the
         first  quarter  1996  unaudited  proforma   consolidated   results  of
         operations would have resulted in total revenues of approximately $1.3
         billion, income from continuing operations of $99 million ($0.51 per 
         share) and net income of $121 million ($0.64 per share).

         Pro forma financial information presented is not necessarily indicative
         either of  results of  operations  that  would  have  occurred  had the
         acquisition  been effective on January 1, 1996, or of future results of
         operations  of Aon. In addition,  the effect of one-time  restructuring
         charges  related  to the  A&A  acquisition  are  not  reflected  in the
         proforma  1996 results  above.  These  restructuring  charges have been
         reflected, however, in first quarter 1997.

7.       Special Charges
         ---------------

         In first  quarter 1997,  Aon recorded  pretax  special  charges of $145
         million ($90.6 million after-tax or $0.54 per share), primarily related
         to  management's  commitment  to a formal plan of  restructuring  Aon's
         brokerage  operations as a result of the  acquisition  of A&A.  Special
         charges for severance and related costs,  involving  over 2,600
         positions, were approximately $40 million.  Terminations resulting from
         workforce  reductions are planned to take place within one year. Pretax
         restructuring  charges include approximately $105 million associated 
         with real estate activities including the closure,  abandonment and 
         downsizing of office space globally following the acquisition of A&A,
         and other consolidation costs. The restructuring charges related
         to  consolidating  real estate  space are  expected to be paid out over
         several years. These charges were reflected as a separate component of 
         total benefits and expenses in the condensed consolidated statements of
         operations.
         
                                     - 6 -
<PAGE>
         In 1996,  Aon recorded  pretax  special charges of $90.5 million ($59.3
         million  after-tax  or $0.36 per share).  In  connection  with the 1996
         special charges, Aon had approximately $60 million  reported in other
         liabilities at March 31, 1997 representing  amounts related to the
         special charges that have not yet been paid.

8.       Discontinued Operations
         -----------------------

         When Aon acquired A&A in first quarter  1997, A&A had net liabilities 
         of  approximately  $45 million  related to its insurance underwriting
         subsidiaries   that  are  currently in run-off and indemnification of 
         certain liabilities  relating to subsidiaries sold. The net liabilities
         for  discontinued  operations are composed of the following:

<TABLE>
<CAPTION>
millions                                                                     As of March 31,     1997  
- -------------------------------------------------------------------------------------------- -----------
Assets:
<S>                                                                                            <C>    
  Insurance liabilities recoverable under finite risk contracts                                $   147
  Reinsurance recoverables                                                                          60
  Cash and investments                                                                              33
  Other                                                                                              5
- -------------------------------------------------------------------------------------------- -----------
Total assets                                                                                       245
- -------------------------------------------------------------------------------------------- -----------
Liabilities:
  Insurance liabilities                                                                        $   277
  Other                                                                                             13
- -------------------------------------------------------------------------------------------- -----------
Total liabilities                                                                                  290
- -------------------------------------------------------------------------------------------- -----------
Total net liabilities of discontinued operations classified as other liabilities               $    45
- -------------------------------------------------------------------------------------------- -----------
</TABLE>

              The insurance  liabilities  represent  estimates of future claims
              expected to be made under occurrence-based  insurance policies and
              reinsurance business written through Lloyd's and the London market
              covering primarily asbestosis, environmental pollution, and latent
              disease  risks  in  the  United  States  which  are  coupled  with
              substantial  litigation  expenses.  These  claims are  expected to
              develop and be settled over the next twenty to thirty years.

              Liabilities  stemming from these claims cannot be estimated using
              conventional   actuarial  reserving   techniques  because  of  the
              inadequacy  of  available  historical  experience  to support such
              techniques,  and because case law, as well as scientific standards
              for  measuring  the adequacy of site  clean-up is still  evolving.
              Therefore,  A&A's  independent  actuaries have combined  available
              exposure  information  with other relevant  industry data and have
              used  various  projection  techniques  to estimate  the  insurance
              liabilities,  consisting  principally of incurred but not reported
              losses. A&A has certain protection against adverse developments of
              the insurance  liabilities  through several finite risk contracts.
              The recoverable  amounts under the finite risk contracts represent
              the excess of such liabilities over the retention levels.

              Aon believes that,  based on current  estimates,  the established
              total net liabilities of discontinued operations are sufficient to
              cover A&A's exposure.
      
                                     - 7 -              
<PAGE>              

9.       Contingencies
         -------------

         Aon and its  subsidiaries  are subject to numerous  claims and lawsuits
         that arise in the ordinary course of business.  Some of these cases are
         being  litigated in  jurisdictions  which have judicial  precedents and
         evidentiary  rules which are  generally  believed  to favor  individual
         plaintiffs  against  corporate  defendants.  The  damages  that  may be
         claimed in these and other jurisdictions are substantial,  including in
         many instances claims for punitive or extraordinary  damages.  Accruals
         for these  lawsuits  have been  provided  to the extent that losses are
         deemed  probable and are estimable.  
         
         A certain pending claim asserted against Alexander & Alexander Services
         Inc.  (A&A)  and  certain  of its  subsidiaries  allege  that  certain
         Alexander Howden subsidiaries  accepted, on behalf of certain insurance
         companies,  insurance or reinsurance at premium levels not commensurate
         with  the  level  of  underwriting  risks  assumed  and  retroceded  or
         reinsured those risks with financially unsound  reinsurance  companies.
         In an action  brought in 1988  against  A&A and  certain  subsidiaries,
         plaintiffs seek  compensatory and punitive  damages,  as well as treble
         damages  under  RICO  totaling  $36  million.   The   defendants   have
         counterclaimed  against  certain of the  plaintiffs  for  contribution.
         Management  of Aon  believes  that A&A has  valid  defenses  to all the
         claims that have been made with respect to these  activities and A&A is
         vigorously defending the pending  action.  This action is covered under
         A&A's professional indemnity program, except for possible damages under
         RICO.  Aon currently  believes the reasonably  possible loss that might
         result  from  this  action,  if any,  would not be  material  to Aon's
         financial position or results of operations.

         In 1987,  A&A sold  Shand  Morahan  &  Company  (Shand),  its  domestic
         underwriting  management  subsidiary.  Prior to the sale, Shand and its
         subsidiaries  had  provided  underwriting  management  services for and
         placed  insurance  and  reinsurance  with and on behalf of Mutual  Fire
         Marine & Inland Insurance Company (Mutual Fire). Mutual Fire was placed
         in rehabilitation in December 1986. In February 1991, the rehabilitator
         commenced  an action.  The  complaint,  which sought  compensatory  and
         punitive  damages,  alleged that Shand,  and in certain  respects  A&A,
         breached  duties to and agreements with Mutual Fire. On March 27, 1995,
         A&A, Shand and the  rehabilitator  entered into a settlement  agreement
         which  was   approved   by  the   courts  and  which   terminated   the
         rehabilitator's  litigation and released A&A and Shand from any further
         claims by the  rehabilitator.  Under the terms of the settlement, A&A 
         paid $43.1 million.  Although  A&A's  professional  liability
         underwriters have denied coverage for the Mutual Fire lawsuit,  A&A has
         instituted  a  declaratory   judgment  action  attempting  to  validate
         coverage. On October 16, 1996, the Court issued a decision holding that
         A&A is not entitled to coverage for the rehabilitator's claims. A&A has
         appealed the ruling.
           
         Under the 1987  agreement  with the  purchaser of Shand,  A&A agreed to
         indemnify the purchaser against certain contingencies, including, among
         others, (i) losses arising out of presale transactions between Shand
         or  Shand's  subsidiaries,  on the one hand,  and Mutual  Fire,  on the
         other,  and (ii) losses  arising out of presale  errors or omissions by
         Shand  or   Shand's   subsidiaries.   A&A's   obligations   under   the
         indemnification provisions in the 1987 sales agreement were not limited
         as to amount or duration.
                                              
                                     - 8 -
<PAGE>                                              
                                                                           
         Starting in late 1992, the purchaser of Shand has asserted a number of
         claims under both the Mutual Fire  indemnification  provision  and the
         errors and omissions indemnification provision of the sales agreement.
         During  1995, most of  those  claims  were  resolved  by a  series  of
         settlement  agreements.  Notwithstanding these settlements,  which had
         the  effect  of  limiting  certain  contractual  obligations  and  the
         restructuring   of   the   parties' relationship,    some   of   A&A's
         indemnification  provisions  under  the 1987  agreement  are  still in
         effect.  As a result,  there remains the  possibility  of  substantial
         exposure  to A&A  under  the  indemnification  provisions  of the 1987
         agreement,  although Aon,  based on current  facts and  circumstances,
         believes that the  possibility of a material loss resulting from these
         exposures is remote.

         Although the ultimate  outcome of these suits cannot be ascertained and
         liabilities  in  indeterminate  amounts  may be  imposed  on A&A or its
         subsidiaries,  on the basis of  present  information,  availability  of
         insurance coverages and advice received from counsel, it is the opinion
         of management  that the disposition or ultimate  determination  of such
         claims  and  lawsuits  will not have a material  adverse  effect on the
         consolidated financial position of Aon.
         
                                     - 9 -
<PAGE>
         

                                 Aon CORPORATION
                   MANAGEMENT'S ANALYSIS OF OPERATING RESULTS
                             AND FINANCIAL CONDITION
                      REVENUE AND INCOME BEFORE INCOME TAX
                             FOR FIRST QUARTER 1997


CONSOLIDATED RESULTS
- --------------------

GENERAL
- -------

In first  quarter  1997,  Aon recorded  pretax  special  charges of $145 million
($90.6 million  after-tax)  primarily  related to  management's  commitment to a
formal  plan of  restructuring  Aon's  brokerage  operations  as a result of the
acquisition  of A&A.  Special  charges  for  severance and related costs,
involving over 2,600 positions, were approximately  $40 million.  Terminations
resulting from  workforce reductions are planned to take place within one year.
Restructuring  charges include  approximately  $105 million associated with real
estate  activities  including the closure,  abandonment and downsizing of office
space globally following the acquisition of A&A, and other consolidation  costs.
The  restructuring  charges  related  to  consolidating  real  estate  space are
expected to be paid out over several  years.  These charges were  reflected as a
separate component of total benefits and expenses in the condensed  consolidated
statements of operations.

Brokerage  commissions  and  fees  increased  $373.7  million  or 79.9% in first
quarter 1997,  reflecting primarily business combination activity related to the
acquisitions of Alexander & Alexander  Services Inc. (A&A) in first quarter 1997
and Bain Hogg Group (Bain Hogg) in fourth quarter 1996.

Premiums earned  increased $6.4 million or 1.7% in first quarter 1997,  compared
with the same period last year.  Extended  warranty  premiums  earned  increased
$17.8 million or 19.4% in the quarter reflecting a higher volume of new business
in both the  mechanical and the appliance and  electronic  lines.  The continued
phase-out of certain  specialty  liability  programs  and the planned  runoff of
North American auto credit business  partially  offset this increase . There was
also continued modest growth in direct sales business.

Net investment  income of $115.8 million increased $31.1 million or 36.7% in the
first  quarter 1997 when  compared to prior year.  Investment  income  growth in
first  quarter  was  primarily  related  to the A&A  acquisition,  and to income
received  on certain  private  equity  investment  holdings.  In  addition,  net
investment income from insurance brokerage and consulting operations,  primarily
relating to fiduciary funds, increased to $39 million in first quarter 1997 from
$17 million in 1996, primarily due to brokerage acquisition activity.

Total revenue  increased $412.2 million or 43.8% in first quarter 1997, largely
attributable to  acquisition-related  growth in brokerage commissions and fees.
Net realized  investment gains were $2.4 million in 1997. There were no realized
investment gains in first quarter 1996. Revenue excluding realized investment
gains increased 43.5% when compared to prior year.


Benefits  to  policyholders  increased  10.3% or $19.2 million in the quarter 
reflecting a higher volume of new extended warranty business.  This increase 
was partially offset by lower claims paid on auto credit business that had
been in runoff since since second quarter 1996.  It is anticipated that this
business will continue to runoff as planned.  Total benefits and expenses 
increased 68.1% in the same period.  The increase in first quarter expenses
                                        
                                    - 10 -
<PAGE>                                    

reflects the inclusion of pretax  special  charges  of $145  million  related 
to  restructuring  costs associated with the merger with A&A. Total benefits 
and expenses,  excluding the 1997 special charges,  increased 49.9% for the  
first quarter 1997. Income before income tax decreased  $130.4 million or 
89.6% in the first quarter,  due largely to the  inclusion  of special charges
and  offset,  in part,  by growth in the insurance  brokerage  and  consulting
segment following the A&A and Bain Hogg acquisitions. Excluding special charges,
income before income tax increased 10% when compared to first quarter 1996.

MAJOR LINES OF BUSINESS
- -----------------------

GENERAL
- -------

In the insurance brokerage and consulting  services segment,  Aon reported first
quarter pretax  special  charges of $145 million  related to the  acquisition of
A&A. For purposes of the  following  line of business  discussions,  comparisons
against last year's results exclude special charges. Management anticipates that
cost savings  associated with the integration of similar  businesses  among Aon,
A&A and Bain Hogg will be realized beginning in the second half of 1997 with the
full benefit of cost savings on operations  to be achieved  starting in 1998. In
addition, references to income before income tax exclude minority interest.

INSURANCE BROKERAGE AND CONSULTING SERVICES
- -------------------------------------------

In first  quarter 1997,  Aon acquired A&A for  approximately  $1.2  billion.  In
fourth  quarter 1996,  Aon acquired  Bain Hogg. As a result,  revenue and income
before  income  tax  results  between  first  quarter  1997  and  1996  are  not
comparable.

Insurance and other  services  (retail,  reinsurance  and  wholesale  brokerage)
revenue  increased  $337.9  million  or 81.7%  for the first  quarter  1997 when
compared  with the same period last year  largely due to  acquisition  activity.
Insurance and other services  continued to reflect highly  competitive  property
and casualty pricing in the domestic market.

"Consulting"  provides  a full  range  of  employee  benefits  and  compensation
consulting,   specialized   employee  assessment  and  training  programs,   and
administrative services. This business showed revenue growth of $57.8 million or
81.1% for the first  quarter  when  compared  to prior  year,  primarily  due to
acquisition  activity  and  to  a  lesser  extent,  expanding  integrated  human
resources consulting programs.

Overall,  revenue for the insurance  brokerage and consulting  services  segment
increased $395.7 million or 81.6% in the first quarter. Income before income tax
increased  $23.4  million or 27.5% when  compared  to first  quarter  1996.  The
brokerage  segment  continues  to be impacted by a soft  property  and  casualty
market,  particularly  in  the  reinsurance  brokerage  business.   Acquisitions
accounted for  substantially  all of the above revenue and pretax income growth.
Excluding  the  impact  of  acquisitions,  revenue  and  pretax  income  results
demonstrated modest growth in a very competitive environment.




U.S./International Results
- --------------------------

First quarter U.S. insurance brokerage and consulting services revenue represent
51% of the  worldwide  total and U.S.  income before income tax represent 30% of
the worldwide total. International brokerage revenue of $434.6 million increased
151.8%  for the  first  quarter  primarily  reflecting  the A&A  and  Bain  Hogg
acquisitions. 

                                     - 11 -
<PAGE>                                     

International brokerage income before income tax increased 65.2% for the quarter
reflecting  the above  mentioned  acquisition activity.  In the  international
insurance  and  other  services  subsegment,  revenues  for  risk management
and insurance  brokerage  services generally are strongest during the first
quarter of the year,  particularly for Continental Europe,  while expenses are 
incurred on a more even basis throughout the year.

INSURANCE UNDERWRITING
- ----------------------

The  insurance  underwriting  line of business  provides  direct  sales life and
accident and health  products,  and extended  warranty  products to individuals.
Revenue  increased  2.1% for the first  quarter 1997 when compared to prior year
primarily due to growth in the worldwide  extended warranty lines.  Direct sales
business  grew  modestly,  as  the  company  continued  to  expand  its  product
distribution through payroll deduction, worksite marketing programs.

Pretax income from  insurance  underwriting  increased  $6.3 million or 10.8% in
first  quarter  1997,  compared  with last year.  Overall,  benefit  and expense
margins in first quarter 1997 did not suggest any significant shift in operating
trends.  Direct sales accident & health  business  improved its pretax margin in
part due to good general expense controls and good international  health product
sales.  Certain specialty  liability programs and auto credit business continued
to be profitably runoff.

U.S./International Results
- --------------------------

First  quarter  U.S.  insurance  underwriting  revenue  represents  71%  of  the
worldwide  total  and  U.S.  income  before  income  tax  represents  73% of the
worldwide total. U.S. insurance  underwriting income before income tax increased
6.8% when compared to its 1996 level.  Results reflect the completed sale of the
North American auto credit  underwriting and  distribution  operations in second
quarter  1996 and  reflect  the planned  continued  runoff of those  operations.
International  insurance underwriting revenue of $130.5 million increased 10.7%,
principally  due to  improved  premiums  earned  in both the  direct  sales  and
extended warranty lines.  International pretax income increased 22.9%, primarily
due to strong  operating  performance in the appliance and electronic  lines and
was offset in part by the  continuing  runoff of  traditional  life  business in
Europe and the Pacific.

CORPORATE AND OTHER
- -------------------

Revenue in this category  consists  primarily of investment  income on insurance
underwriting  operations'  capital  and  realized  investment  gains.  Insurance
company investment income is allocated to the underwriting  segment based on the
invested assets which underlie policyholder  liabilities.Excess  invested assets
and related  investment  income,  which do not underlie these  liabilities,  are
reported  in  this  segment.  Expenses  include  interest  and  other  financing
expenses,   goodwill  amortization   associated  with  insurance  brokerage  and
consulting acquisitions, and corporate administrative costs.


Revenue  increased  34.3% for the first  quarter  1997,  due primarily to higher
levels of  investment  income  received  on certain  private  equity  investment
holdings.  Pretax realized investment gains for the first quarter 1997 were $2.4
million  and there were no  realized  investment  gains in first  quarter  1996.
Income before income tax, excluding realized  investment gains,  decreased $17.5
million  over  the  same  quarter  last  year.   Financing  costs  and  goodwill
amortization  related  to  acquisitions,   in  particular  A&A  and  Bain  Hogg,
contributed largely to this decrease.

                                    - 12 -
<PAGE>                                    

DISCONTINUED OPERATIONS
- -----------------------

Discontinued  operations  in first  quarter 1996 were  composed  principally  of
capital accumulation products and direct response products. Substantially all of
the revenue and income before income tax generated from discontinued  operations
was U.S.  These  amounts  have been  segregated  as  "Income  From  Discontinued
Operations" in the condensed  consolidated  statements of  operations.  With the
completion  of the sales of The Life  Insurance  Company of  Virginia  (LOV) and
Union Fidelity Life Insurance  Company  (UFLIC) on April 1, 1996,  there were no
operating  results  from  these  discontinued   operations  going  forward.

The discontinued  operations assumed by Aon upon its acquisition of A&A in first
quarter  1997   represent  net   liabilities   related  to  acquired   insurance
underwriting  subsidiaries that are currently in runoff and  indemnification  of
certain  liabilities  relating to subsidiaries sold (see note 8 to the condensed
consolidated  financial  statements).   Aon  believes  that  these  discontinued
operations  are  adequately  reserved for and the net liability is included as a
component of other liabilities on the statement of financial position.

                                    - 13 -
<PAGE>
<TABLE>
<CAPTION>
                                Aon CORPORATION
                             MAJOR LINES OF BUSINESS
                             -----------------------

                                                                      First Quarter Ended
                                                                  ---------------------------
(millions)                                                          March 31,       Percent  
                                                                      1997          Change
                                                                  ------------   ------------
REVENUE

<S>                                                               <C>                   <C>  
Insurance brokerage and consulting services ...................   $     880.7           81.6%

Insurance underwriting ........................................         445.4            2.1

Corporate and other ...........................................          28.2           34.3
                                                                  ------------   ------------

    TOTAL REVENUE .............................................   $   1,354.3           43.8%
                                                                  ============   ============





INCOME BEFORE INCOME TAX

Insurance brokerage and consulting services ...................   $     108.6           27.5%
  Special charges .............................................        (145.0)             -
                                                                  ------------   ------------
  Including special charges ...................................         (36.4)           N/A

Insurance underwriting ........................................          64.8           10.8

Corporate and other ...........................................         (13.2)           N/A
                                                                  ------------   ------------
    TOTAL INCOME BEFORE INCOME TAX ............................   $      15.2          (89.6%)
                                                                  ============   ============

</TABLE>

                                    - 14 -
<PAGE>
<TABLE>
<CAPTION>
                                 Aon CORPORATION
                          REVENUE BY MAJOR PRODUCT LINE
                          -----------------------------
                                                                      First Quarter Ended
                                                                  ---------------------------
(millions)                                                          March 31,       Percent  
                                                                      1997          Change
                                                                  ------------   ------------
INSURANCE BROKERAGE AND CONSULTING SERVICES
<S>                                                               <C>                   <C>  
Insurance and other services...................................   $     751.6           81.7%
Consulting.....................................................         129.1           81.1
                                                                  ------------   ------------
    TOTAL REVENUE..............................................   $     880.7           81.6%
                                                                  ============   ============

INSURANCE UNDERWRITING
Direct sales - life, accident and  health .....................   $     254.7            0.4%
Extended warranty .............................................         129.4           18.7
Other....................... ..................................          61.3          (16.6)
                                                                  ------------   ------------
    TOTAL REVENUE..............................................   $     445.4            2.1%
                                                                  ============   ============

CORPORATE AND OTHER
Investment income on capital and other.........................   $      25.8           22.9%
Realized investment gains......................................           2.4              -
                                                                  ------------   ------------
    TOTAL REVENUE..............................................   $      28.2           34.3%
                                                                  ============   ============
</TABLE>

                                    - 15 -
<PAGE>
                        NET INCOME FOR FIRST QUARTER 1997

References  to share data  reflect the  three-for-two  stock split  announced on
March 21, 1997,  payable on May 14, 1997 to  stockholders of record as of May 1,
1997.  First quarter net income was $0.7 million ($0.02 loss per share) compared
to $118.9  million  ($0.69  income per  share) in 1996.  The  decrease  in first
quarter  1997 net income and the related per share amount is not  comparable  to
1996 due to: (1)  after-tax  1997 special  charges of $90.6  million  ($0.54 per
share);  (2) the 1997  deduction  for  after-tax  distributions  on the  capital
securities  (reflected  as  "minority  interest" on the  condensed  consolidated
statements  of  operations);  and (3) operating  results from 1996  discontinued
operations  are due to the  completion  of the  sales of UFLIC and LOV in second
quarter 1996 ($0.13 per share).

Operating income from continuing operations before special charges, and realized
investment  gains was $89.8 million  ($0.51 per share) in 1997 compared to $96.5
million ($0.56 per share) in 1996.  Included in first quarter 1997 net income is
after-tax realized  investment gains of $0.01 per share with no comparable gains
or losses in 1996.

The effective  tax rate on continuing  operations  for operating  income,  which
excludes after-tax realized investment gains, was 37.5%, up from 33.7% for first
quarter 1996 due to changes in business mix.  Realized gains were taxed at 37.5%
and  36%  for  first  quarter  1997  and  1996,  respectively.   Average  shares
outstanding for first quarter increased 2.8% when compared to 1996 primarily due
to the conversion of preferred stock to common stock in fourth quarter 1996.



                        CASH FLOW AND FINANCIAL POSITION
                        AT THE END OF FIRST QUARTER 1997


GENERAL
- -------

Consistent  with  financial  statement  presentation,  the  following  cash flow
discussion reflects the completion of the sales of UFLIC and LOV in April, 1996,
and the acquisition of A&A in first quarter 1997 and Bain Hogg in fourth quarter
1996. As a result of these transactions,  the amounts contained in the condensed
consolidated  statement of cash flows for the first quarter ended March 31, 1997
are not comparable to the same period in 1996.

Cash flows from operating  activities in first quarter 1997 were $307.8 million,
an increase of $65.1  million from first  quarter 1996  (including  discontinued
operations).  This  increase  primarily  reflects  the timing of  settlement  of
insurance segment receivables and payables.

Investing  activities  used cash of $308.7 million which was made available from
financing and operating  activities.  Cash used for acquisition  activity during
the  first  quarter  1997  was  $1.3  billion,   primarily  reflecting  the  A&A
acquisition.

                                    - 16 -
<PAGE>                                    

Cash  totaling  $878.4  million  was  provided  during  first  quarter 1997 from
financing  activities.  The increase is primarily a result of funds  provided on
the issuance of the capital securities.  Cash was used to pay dividends of $39.1
million on common  stock,  $2.7  million on 8%  cumulative  perpetual  preferred
stock, and $0.6 million on redeemable preferred stock.

Aon's operating subsidiaries anticipate that there will be adequate liquidity to
meet their needs in the foreseeable future.  Aon's liquidity needs are primarily
for  servicing  its debt and for the payment of  dividends  on stock  issues and
capital securities.  The businesses of Aon's operating  subsidiaries continue to
provide  substantial  positive  cash  flow.  Brokerage  cash  flow has been used
primarily  for  acquisition  financing.  Aon  anticipates  continuation  of  the
company's  positive  cash flow,  the  ability  of the  parent  company to access
adequate short-term lines of credit, and sufficient cash flow in the long-term.

Due to the contractual  nature of its insurance  policyholder  liabilities which
are  intermediate  to long-term in nature,  Aon has invested  primarily in fixed
maturities.  With a carrying  value of $2.7 billion,  Aon's total fixed maturity
portfolio is invested  primarily in investment  grade  holdings  (96%) and has a
fair  value  which is  102.7% of  amortized  cost.

Total  assets  increased  $3.6 billion to $17.3  billion  since  year-end  1996,
primarily  due to the  acquisition  of A&A.  Invested  assets at March 31,  1997
decreased $152 million from year-end levels,  primarily due to unrealized losses
on preferred  stock.  The amortized cost and fair value of less than  investment
grade fixed  maturity  investments,  at March 31, 1997,  were $90.4  million and
$96.4  million,   respectively.  The  carrying  value  of  non-income  producing
investments in Aon's  portfolio at March 31, 1997 was $70.8 million,  or 1.4% of
total invested assets.

Aon uses derivative financial instruments  (primarily financial futures,  swaps,
options   and   foreign   exchange   forwards)   to:  (a)  manage  its   overall
asset/liability  duration  match;  (b) hedge  asset price risk  associated  with
financial  instruments whose change in value is reported under SFAS 115; and (c)
hedge foreign  currency  transaction  risk and other business risks. As of March
31, 1997, Aon had open contracts  which had  unrealized  gains of  approximately
$23.9 million.

Insurance brokerage and consulting  services  receivables and insurance premiums
payable increased $1.2 billion and $1.8 billion,  respectively, in first quarter
1997 when compared to year-end 1996,  primarily  reflecting the A&A acquisition.
When  compared  to 1996,  excess of cost over net  assets  purchased  (goodwill)
increased approximately $1.2 billion due to the A&A acquisition (see note 6).

In first quarter 1997,  Aon completed the merger with A&A. The purchase price of
approximately  $1.2  billion  was funded by the  issuance of  commercial  paper,
internal  funds,  and  the  issuance  of  $800  million  of  8.205%  mandatorily
redeemable  preferred  capital  securities  (capital  securities).  The  capital
securities are designated on the condensed  consolidated  statement of financial
position  as   "Company-obligated   Mandatorily   Redeemable  Preferred  Capital
Securities  of  Subsidiary  Trust  holding  solely  the  Company's  Securities."
Short-term borrowings increased at the end of first quarter 1997 by $132 million
when compared to year-end 1996 primarily due to the issuance of commercial paper
to fund a portion of the A&A acquisition. Included in notes payable at March 31,
1997 is approximately $40 million which represents the principal amount of notes
due within one year.

                                    - 17 -
<PAGE>                                    

Commencing on or after November 1, 1997, Aon has the option to redeem all or any
part of its 8% Cumulative  Perpetual  Preferred Stock (8% preferred  stock) at a
redemption price of $25.00 per share plus accrued  dividends.  It is anticipated
that Aon will most  likely  exercise  its option to redeem all of the  remaining
outstanding  shares.  At March 31, 1997,  5,446,000 shares of 8% preferred stock
were outstanding.

Stockholders'  equity  decreased  $136.9 million in first quarter 1997 to $15.34
per share,  a decrease of $0.87 per share since  year-end  1996.  The  principal
factors  influencing  this  decrease  were $90.6  million of  after-tax  special
charges  which reduced net income,  net  unrealized  investment  losses of $34.1
million,  net  foreign  exchange  losses  of  $35.6  million  and  dividends  to
stockholders  of $85.8  million.  Included  in  dividends  is an accrual for the
common stock dividend that will be paid in second quarter 1997.

Review by Independent Auditors
- ------------------------------

The condensed  consolidated  financial statements at March 31, 1997, and for the
first quarter then ended have been reviewed,  prior to filing,  by Ernst & Young
LLP, Aon's independent auditors, and their report is included herein.

                                    - 18 -
<PAGE>
INDEPENDENT ACCOUNTANTS' REVIEW REPORT



Board of Directors and Stockholders
Aon Corporation

We have reviewed the accompanying  condensed consolidated statement of financial
position of Aon  Corporation  as of March 31,  1997,  and the related  condensed
consolidated statements of operations and cash flows for the three-month periods
ended March 31, 1997 and 1996. These financial statements are the responsibility
of the Company's management.

We  conducted  our  reviews in  accordance  with  standards  established  by the
American  Institute  of  Certified  Public  Accountants.  A  review  of  interim
financial  information consists principally of applying analytical procedures to
financial  data, and making  inquiries of persons  responsible for financial and
accounting matters. It is substantially less in scope than an audit conducted in
accordance with generally accepted auditing  standards,  which will be performed
for the full year with the  objective of  expressing  an opinion  regarding  the
financial  statements taken as a whole.  Accordingly,  we do not express such an
opinion.

Based on our reviews, we are not aware of any material modifications that should
be made to the accompanying condensed consolidated financial statements referred
to  above  for  them to be in  conformity  with  generally  accepted  accounting
principles.

We have  previously  audited,  in accordance  with generally  accepted  auditing
standards,  the consolidated  statement of financial position of Aon Corporation
as of December  31, 1996,  and the related  consolidated  statements  of income,
stockholders'  equity,  and cash flows for the year then  ended,  not  presented
herein,  and in our report dated  February 11, 1997, we expressed an unqualified
opinion  on  those  consolidated  financial  statements.  In  our  opinion,  the
information set forth in the accompanying  condensed  consolidated  statement of
financial  position as of December 31, 1996, is fairly  stated,  in all material
respects,  in relation to the consolidated  statement of financial position from
which it has been derived.



                                                /s/ Ernst & Young LLP
                                                ---------------------
                                                
                                                  ERNST & YOUNG LLP

Chicago, Illinois
May 1, 1997

                                    - 19 -
<PAGE>

                                     PART II

                                OTHER INFORMATION
                                -----------------

ITEM 1.        LEGAL PROCEEDINGS
- -------        -----------------

               The Registrant hereby  incorporates by reference to Part I Note 8
               (Discontinued Operations) and Note 9 (Contingencies) of the Notes
               to the Condensed Consolidated Financial Statements herein.

ITEM 4.        SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
- -------        ---------------------------------------------------

               (a)       The Annual  Meeting of  Stockholders  of the Registrant
                         was held on April 18, 1997 (the "1997 Annual Meeting").

               (b)       Not applicable.

               (c)(i)    The tabulation of votes below does not reflect the  
                         three-for-two  stock split payable May 14, 1997 to  
                         stockholders of record on May 1, 1997. Set forth  below
                         is the  tabulation  of the  votes on each nominee for 
                         election as a director:

                                                            Withhold
     Name                           For                    Authority
     ----                           ---                    --------- 

Daniel T. Carroll                 96,529,268                 293,759

Franklin A. Cole                  96,542,230                 280,797

Edgar D. Jannotta                 96,573,487                 249,540

Perry J. Lewis                    96,567,088                 255,939

Joan D. Manley                    96,578,382                 244,645

Andrew J. McKenna                 96,575,140                 247,877

Newton N. Minow                   95,244,463               1,578,564
 
Peer Pedersen                     95,244,926               1,578,101

Donald S. Perkins                 96,571,598                 251,429

John W. Rogers, Jr.               96,579,310                 243,717

Patrick G. Ryan                   96,582,783                 240,244

George A. Schaefer                96,585,295                 237,732

Raymond I. Skilling               96,579,662                 243,365

Fred L. Turner                    96,585,830                 237,197

Arnold R. Weber                   96,560,132                 262,895

                                    - 20 -
<PAGE>


               (ii) Set  forth  below  is  the  tabulation  of the  vote  on the
                    adoption of amendments to the Aon Stock Option Plan in order
                    to increase the number of shares of Common Stock  authorized
                    under such plan from 11,550,000 to 15,550,000  shares and to
                    reapprove  such  plan in its  entirety  with a limit  on the
                    number of shares  awardable  annually  to any one  person in
                    order to  qualify  such  plan for  treatment  under  Section
                    162(m) of the Internal Revenue Code.


                       For         Against        Abstain        Nonvote
                       ---         -------        -------        -------  

                    86,850,679     3,630,733      997,372        5,344,243

              (iii) Set forth  below is the  tabulation  of the vote to  approve
                    and adopt an  amendment to the Aon Stock Award Plan in order
                    to increase the number of shares of Common Stock  authorized
                    under such plan from 5,025,000 to 8,600,000 shares.


                       For         Against        Abstain        Nonvote
                       ---         -------        -------        -------  

                    86,451,199     3,928,352    1,099,534        5,343,942

               (iv) Set  forth  below  is  the  tabulation  of the  vote  on the
                    selection   of  Ernst  &  Young  LLP  as  auditors  for  the
                    Registrant for the 1997 fiscal year.

                       For         Against        Abstain        Nonvote
                       ---         -------        -------        -------  

                    96,343,915       200,354      278,758             -0-

               (v)  Set forth below is the  tabulation of the vote on a proposal
                    made by a stockholder relating to certain investments by the
                    Registrant  as  set  forth  beginning  on  page  24  of  the
                    Registrant's  Notice of Annual  Meeting of Holders of Common
                    Stock and Series C Preferred  Stock and Proxy  Statement for
                    the 1997 Annual Meeting.

                       For         Against        Abstain        Nonvote
                       ---         -------        -------        -------  

                    5,784,394     81,891,941     3,327,996     5,818,696
  
               (d)       Not applicable.


ITEM 6.        EXHIBITS AND REPORTS ON FORM 8-K
- -------        --------------------------------

               (a)  Exhibits - The exhibits filed with this report are listed on
                    the attached Exhibit Index.

               (b)  Reports on Form 8-K - The Registrant  filed a Current Report
                    on Form 8-K and a Current Report on Form 8-K/A dated January
                    15,  1997  pursuant to Item 2 of Form 8-K and Item 7 of Form
                    8-K/A. The following financial statements were filed:
                    
                                    - 21 -
<PAGE>

                    Consolidated Statements of Operations -- For the years ended
                    December 31, 1995, 1994 and 1993


                    Consolidated  Balance  Sheets -- As of December 31, 1995 and
                    1994

                    Consolidated Statements of Cash Flows -- For the years ended
                    December 31, 1995, 1994 and 1993

                    Consolidated  Statements of Stockholders'  Equity -- For the
                    years ended December 31, 1995, 1994 and 1993

                    Notes to Financial Statements

                    Unaudited  Consolidated  Statements of Operations -- For the
                    three and nine months ended September 30, 1996 and 1995

                    Condensed Consolidated Balance Sheets -- As of September 30,
                    1996 (Unaudited) and December 31, 1995

                    Unaudited  Consolidated  Statements of Cash Flows -- For the
                    nine months ended September 30, 1996 and 1995

                    Unaudited Notes to Financial Statements

          No other Current  Reports on Form 8-K were filed for the quarter ended
          March 31, 1997.

                                    SIGNATURE

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.

                                  Aon Corporation
                                  ---------------
                                  (Registrant)

May 15, 1997                        /s/ Harvey N. Medvin
                                    --------------------
                                    HARVEY N. MEDVIN
                                    EXECUTIVE VICE PRESIDENT,
                                    CHIEF FINANCIAL OFFICER AND
                                    TREASURER
                                    (Principal Financial and Accounting Officer)

                                    - 22 -
<PAGE>

                                 Aon Corporation

                                  EXHIBIT INDEX
                                  -------------


Exhibit Number
In Regulation S-K,                                                        Page
Item 601 Exhibit Table                                                     No.


(10)(a)   Aon Stock Option Plan (as amended and restated through 1997)     

(10)(b)   Aon Stock Award Plan (as amended and restated through 1997)      

(11)      Statement regarding Computation of Per Share Earnings.           

(12)      Statements regarding Computation of Ratios.                      

          (a)     Statement  regarding  Computation  of Ratio of           
                  Earnings to Fixed Charges.

          (b)     Statement   regarding   Computation   of  Ratio  of      
                  Earnings  to Combined Fixed Charges and Preferred 
                  Stock Dividends.

(15)      Letter re: Unaudited Interim Financial Information.              

(27)      Financial Data Schedule

                                    - 23 -
<PAGE>
                         
                                                                   EXHIBIT 10(a)
                              AON STOCK OPTION PLAN
                     (as amended and restated through 1997)



         1.       PURPOSE

The purpose of the Aon Stock Option Plan (as amended and restated  through 1997)
(the "Plan") is to encourage the highest level of  performance  by key employees
of operating  subsidiaries and affiliates of Aon Corporation (which subsidiaries
and affiliates are herein  collectively  referred to as the  "Corporation"  ) by
making a grant to them ("Grants") of Aon Corporation's  common stock,  $1.00 par
value per share ("Common Stock"), which grants are subject to the conditions set
forth in the Plan.

         2.       ADMINISTRATION

The Plan shall be administered by the Organization  and  Compensation  Committee
(the  "Committee") of Aon  Corporation's  Board of Directors (the "Board").  The
aggregate number of shares of Common Stock which initially may be the subject of
Grants  under  this  Plan  shall be  15,550,000,  all of which  may be issued in
connection with incentive stock options. All questions involving eligibility for
Grants,  interpretations  of the provisions of the Plan, or the operation of the
Plan shall be  decided by the  Committee.  No member of the  Committee  shall be
eligible to receive a Grant under the Plan. All  determinations of the Committee
shall be  conclusive.  The  Committee may obtain such advice or assistance as it
deems appropriate from persons not serving on the Committee.

         3.       ELIGIBILITY

Grants  may be  made  under  the  Plan  to  key  employees  of  the  Corporation
("Participants")  as  approved  by the  Committee.  The  Grants  shall be at the
discretion of the Committee and may vary by Participant.


         4.       TERMS AND CONDITIONS

The Committee  may make Grants in the form of Incentive  Stock Option Grants (as
defined by Internal  Revenue Code Section 422 and referred to herein as "ISO's")
and/or  Regular  Stock Option  Grants (not  intended to be accorded  favored tax
treatment, and referred to herein as "RSO's") under the Plan.

The  purchase  price per share of Common  Stock  subject to a Grant shall not be
less than 100% of the fair  market  value of the  Common  Stock on the date such
Grant is made.  "Fair  Market  Value" as used in the Plan with  regard to a date
means the  arithmetic  mean of the high and low  prices of the  Common  Stock as
quoted on the New York Stock Exchange,  as published in The Wall Street Journal,
or, if The Wall Street Journal is no longer published,  such other periodical as
is chosen by the Committee.

A Grant shall vest after a Participant's period of continuous  employment by the
Corporation  from the date of a Grant  ("Grant  Date")  in  accordance  with the
schedule set forth below:
                                     
                                     - 1 -
<PAGE>
          Participant's Full Years of Continuous
          --------------------------------------
                Employment From Grant Date               Percent Vested
                --------------------------               --------------

                            3                                  30
                            4                                  20
                            5                                  20
                            6                                  30

A  Participant,  following  the  vesting of any  portion of a Grant as set forth
above,  may  elect to  exercise  an  option  by  giving  written  notice  to the
Corporation on such form as the Committee may  prescribe,  indicating the number
of shares to be purchased. Payment for all shares to be purchased pursuant to an
exercise  of an  option  shall be made in any form or manner  authorized  by the
Committee,  including, but not limited to, cash or, if the Committee so permits,
(i) by delivery or  certification  of ownership to the Corporation of the number
of shares of stock  which  have been  owned by the  holder  for at least six (6)
months prior to the date of exercise  having an  aggregate  Fair Market Value of
not less than the product of the purchase price of the option  multiplied by the
number of shares the Participant intends to purchase upon exercise of the option
on the date of delivery;  (ii) in a cashless exercise through a broker; or (iii)
by having a number of shares of stock withheld,  the aggregate Fair Market Value
of which as of the date of exercise is sufficient to satisfy the purchase  price
of the option. Delivery of such certificates is conditioned on the Participant's
prior  compliance  with this  paragraph  and with the terms of paragraph 7. Upon
receipt of such stock  certificate,  the Participant is free to hold or, subject
to paragraph 13, dispose of it at will. The Participant  does not have the right
to vote any  shares  subject to any Grant or receive  dividends  on such  shares
prior to the time they are delivered.  The Committee at its discretion may alter
the terms of the vesting of Grants; provided, however, no Grant may be exercised
after the tenth (10th) anniversary of the date of the making of such Grant.

         5.       LIMITATION ON ISO'S

Notwithstanding  anything in the Plan to the  contrary,  to the extent  required
from time to time by the  Internal  Revenue  Code and  promulgations  thereunder
("Code"),  the following  additional  provisions shall apply to Grants which are
intended to qualify as ISO's:

     (a) The aggregate  Fair Market Value  (determined  as of the Grant date) of
         the shares of Common Stock with respect to which ISO's are  exercisable
         for the first time by any  Participant  during any calendar year (under
         all plans of the  Corporation)  shall not  exceed  $100,000  or such
         other amount as may  subsequently  be  specified by the Code;  provided
         that,  to the  extent  that such  limitation  is  exceeded,  any excess
         options (as determined under the Code) shall be deemed to be RSO's.

     (b) Any ISO's authorized under the Plan shall contain such other provisions
         as the  Committee  shall  deem  advisable,  but shall in all  events be
         consistent  with and  contain  or be deemed to contain  all  provisions
         required in order to qualify the Grants as ISO's.

     (c) All ISO's must be granted  within ten years from the effective  date of
         this Plan.

                                     - 2 -
<PAGE>
         6.       EMPLOYMENT TERMINATION

If a  Participant's  employment  terminates  because of death or disability  all
unvested Grants will continue to vest in accordance with Paragraph 4. Unless the
Committee determines otherwise, if a Participant's employment terminates for any
reason,  other  than  by  death  or  disability,  all  unvested  Grants  will be
forfeited.

         7.       TAXES

A Participant  shall have the duty to pay to the  Corporation an amount equal to
all taxes  required by any  government to be withheld or otherwise  deducted and
paid by the  Corporation as a result of the  distribution  to the Participant of
any shares subject to a Grant.  Shares subject to a Grant shall not be delivered
to the Participant until such time as such payment has been made.

The Committee  may, in its discretion and subject to such rules as it may adopt,
permit  Participant  to pay all or a portion of such taxes arising in connection
with the exercise of a Grant by electing to have the Corporation withhold shares
of Common Stock  otherwise  issuable  having a Fair Market Value equal to all or
any portion of such tax to be satisfied in this manner.

         8.       ADJUSTMENT IN EVENT OF CHANGES IN CAPITALIZATION

In the event of a recapitalization,  stock split, stock dividend, combination or
exchange  of  shares,  merger,  consolidation,   rights  offering,   separation,
reorganization or liquidation, or any other change in the corporate structure or
shares of the Corporation, the Committee may make such equitable adjustments, to
prevent  dilution or  enlargement of rights,  as it may deem  appropriate in the
number and class of shares subject to a Grant.

         9.       NO RIGHT TO CONTINUED EMPLOYMENT

Nothing in the Plan shall confer on a  Participant  any right to continue in the
employ  of the  Corporation  or in any way  affect  the  Corporation's  right to
terminate the Participant's  employment at any time without prior notice and for
any or no reason.

         10.      IMPACT ON OTHER BENEFITS

The value of any shares  delivered  (or money in lieu  thereof)  under this Plan
shall not be  includable as  compensation  or earnings for purposes of any other
benefit plan offered by the Corporation.

         11.      TRANSFERABILITY

No  Grants  and no right  under  any such  Grants  shall  be  transferable  by a
Participant  otherwise  than  pursuant  to a will  or the  laws of  descent  and
distribution;  provided,  however,  that if so  determined by the  Committee,  a
Participant may, in the manner established by the Committee;

     (a) designate a beneficiary or  beneficiaries to exercise the rights of the
         Participant and receive any property  distributable with respect to any
         Grants upon the death of the Participant, or;

                                     - 3 -
<PAGE>
     (b) transfer a Grant to any member of such Participant's "immediate family"
         (as such term is defined in Rule 16a-1(e) promulgated by the Securities
         and Exchange  Commission under the Securities  Exchange Act of 1934, as
         amended, or any successor rule or regulation)  ("Immediate  Family") or
         to a trust or family  partnership  whose  beneficiaries  are members of
         such Participant's Immediate Family.

Each  Grant  or  right  under  any  Grant  shall  be   exercisable   during  the
Participant's  lifetime  only  by  the  Participant,  or  by a  member  of  such
Participant's  immediate family or a trust or family  partnership for members of
such  Immediate  Family  pursuant  to a  transfer  as  described  above,  or  if
permissible  under  applicable  law,  by the  Participant's  guardian  or  legal
representative.  No  Grant  or  right  under  any  such  Grant  may be  pledged,
alienated,  attached or otherwise encumbered,  any purported pledge, alienation,
attachment or encumbrance  thereof shall be void and  unenforceable  against the
Corporation.

         12.      TERMINATION OR AMENDMENT OF THE PLAN

Except as otherwise stated in this Section 12, the Board shall have the right to
amend or  terminate  the Plan at any time,  subject  to any  applicable  rule or
regulation.  A Grant,  however, may not in any way be affected or limited by any
Plan amendment or  termination  approved after the date of the Grant without the
Participant's written consent. The Committee shall have the right, to the extent
it deems  appropriate,  to  establish  or amend  such other  terms,  conditions,
restrictions, and/or limitations, if any, of any Grant.

The following matters shall require approval by the stockholders:

         (a)      the  increase in the number of shares which may be issued  
                  pursuant to the Plan (except  pursuant to Section 5 herein);
         (b)      the grant of options under this Plan at an option price less 
                  than Fair Market Value;
         (c)      the exercise of an option  without full payment for the shares
                  at the time of purchase.


         13.      REGULATORY COMPLIANCE AND LISTING

The delivery of any shares  under this Plan may be postponed by the  Corporation
for such period as may be required  to comply with any  applicable  requirements
under the Federal or State  securities  laws,  any  applicable  listing or other
requirements  of any national  securities  exchange and  requirements  under any
other law or  regulation  applicable  to the  delivery of such  shares,  and the
corporation shall not be obligated to deliver any shares under this Plan if such
delivery  shall  constitute  a violation  of any  provision of any law or of any
regulation of any governmental authority or any national securities exchange. In
addition,  the shares when  delivered  may be subject to  conditions,  including
transfer restrictions, if required to comply with applicable securities law.

         14.      MISCELLANEOUS

The  shares  of  Common  Stock to be  delivered  under  the  Plan may be  either
authorized but unissued shares or shares which have been or may be reacquired by
the Corporation, as determined from time to time by the Committee.

                                     - 4 -
<PAGE>
Notwithstanding any provision contained in the Plan to the contrary, the maximum
number  of  shares  for  which  Grants  may be made  under  this Plan to any one
Participant in any one calendar year is 300,000 shares of Common Stock.

         15.      EFFECTIVE DATE OF THE PLAN

The Plan shall become  effective as amended and restated as of the date of Board
approval and stockholder approval.

                                     - 5 -
<PAGE>

                                                                  EXHIBIT 10(b)
                              AON STOCK AWARD PLAN
                     (as amended and restated through 1997)



         1.       PURPOSE

The purpose of the Aon Stock Award Plan (as amended and restated  through  1997)
(the "Plan") is to encourage the highest level of  performance  by key employees
of operating  subsidiaries and affiliates of Aon Corporation (which subsidiaries
and affiliates are herein  referred to as  "Corporation" ) by making an award to
them ("Award") of Aon Corporation's common stock ("Common Stock"),  which awards
are subject to the conditions set forth in the Plan.

         2.       ADMINISTRATION

The Plan shall be administered by the Organization  and  Compensation  Committee
(the  "Committee") of Aon  Corporation's  Board of Directors (the "Board").  The
aggregate  number of shares of Common  Stock  which may be the subject of Awards
under this Plan  shall be  8,600,000.  From time to time the Board may  allocate
additional  shares of Common  Stock to be the subject of Awards under this Plan.
All  questions  involving   eligibility  for  Awards,   interpretations  of  the
provisions  of the Plan,  or the  operation  of the Plan shall be decided by the
Committee.  No member of the  Committee  shall be  eligible  to receive an Award
under the Plan. All  determinations  of the Committee  shall be conclusive.  The
Committee  may obtain such advice or  assistance  as it deems  appropriate  from
persons not serving on the Committee.

         3.       ELIGIBILITY

Awards  may be  made  under  the  Plan  to  key  employees  of  the  Corporation
("Participants")  as  approved  by the  Committee.  The  Awards  shall be at the
discretion of the Committee and may vary by Participant.


         4.       TERMS AND CONDITIONS

An Award shall vest after a Participant's period of continuous employment by the
Corporation  from the date of an Award  ("Award  Date") in  accordance  with the
schedule set forth below:

          Participant's Full Years of Continuous
          --------------------------------------
                Employment From Award Date                   Percent Vested
                --------------------------                   --------------

                            3                                      20
                            4                                      10
                            5                                      10
                            6                                      10
                            7                                      10
                            8                                      10
                            9                                      10
                            10                                     20

                                     - 1 -
<PAGE>
Within  30 days of the  vesting  of any  portion  of an Award by  virtue  of the
Participant's  completing  the full years of continuous  employment as set forth
above,  the  Corporation  shall deliver to the  Participant a stock  certificate
covering  the  requisite  number of shares.  Delivery  of such  certificates  is
conditioned on the Participant's prior compliance with the terms of paragraph 6.
Upon  receipt of such stock  certificate,  the  Participant  is free to hold or,
subject to paragraph 12,  dispose of it at will. The  Participant  does not have
the right to vote any shares  subject to an Award or receive  dividends  on such
shares prior to the time they are delivered. The Committee at its discretion may
alter  the  terms  of the  vesting  of  Awards.  The  Committee  shall  have the
discretion to discharge all or a portion of its obligation  under this paragraph
by paying to the  Participant  an amount of money equal to the fair market value
of all or a portion  of the  undelivered  shares on the date the  shares  become
vested, less all taxes required to be withheld or otherwise deducted and paid by
the Corporation as a result of the distribution to the Participant. "Fair Market
Value," as used in this  paragraph  and hereon,  with regard to a date means the
arithmetic  mean of the high and low prices of the Common Stock as quoted on the
New York Stock  Exchange,  as published in The Wall Street  Journal,  or, if The
Wall Street Journal is no longer  published,  such other periodical as is chosen
by the Committee.

         5.       EMPLOYMENT TERMINATION

If a  Participant's  employment  terminates  because of death or disability  all
unvested  Awards will  continue to vest in  accordance  with  Paragraph  4. If a
Participant's  employment  terminates  for any  reason,  other  than by death or
disability, all unvested Awards will be forfeited;  however, the Committee shall
have the  discretion  to deliver  shares of Common Stock  representing  all or a
portion of any  remaining  unvested  Award with respect to specific  terminating
Participants  if, after  reviewing  all of the facts and  circumstances  of such
termination,  the Committee  determines  that such delivery is  appropriate  and
equitable as to a Participant.

         6.       TAXES

A Participant  shall have the duty to pay to the  Corporation an amount equal to
all taxes  required by any  government to be withheld or otherwise  deducted and
paid by the  Corporation as a result of the  distribution  to the Participant of
any  shares  subject  to an  Award.  Shares  subject  to an Award  shall  not be
delivered to the Participant until such time as such payment has been made.

The Committee  may, in its discretion and subject to such rules as it may adopt,
permit  Participant  to pay all or a portion of such taxes arising in connection
with vesting of an Award by electing to have the Corporation  withhold shares of
Common Stock  otherwise  issuable having a Fair Market Value equal to all or any
portion of such tax to be satisfied in this manner.

         7.       ADJUSTMENT IN EVENT OF CHANGES IN CAPITALIZATION

In the event of a recapitalization,  stock split, stock dividend, combination or
exchange  of  shares,  merger,  consolidation,   rights  offering,   separation,
reorganization or liquidation, or any other change in the corporate structure or
shares of the Corporation, the Committee may make such equitable adjustments, to
prevent  dilution or  enlargement of rights,  as it may deem  appropriate in the
number and class of shares subject to an Award.

                                     - 2 -
<PAGE>
         8.       NO RIGHT TO CONTINUED EMPLOYMENT

Nothing in the Plan shall confer on a  Participant  any right to continue in the
employ  of the  Corporation  or in any way  affect  the  Corporation's  right to
terminate the Participant's  employment at any time without prior notice and for
any or no reason.

         9.       IMPACT ON OTHER BENEFITS

The value of any shares  delivered  (or money in lieu  thereof)  under this Plan
shall not be  includable as  compensation  or earnings for purposes of any other
benefit plan offered by the Corporation.

         10.      BENEFICIARY

Any shares  deliverable after a Participant's  death (or money in lieu thereof )
shall be delivered (or paid) to the  beneficiary as designated in writing by the
Participant.  If no beneficiary is so designated,  delivery (or payment) will be
made to the  Participant's  estate.  The  Participant  may change the designated
beneficiary  of this Plan by filing with the Committee  written  notices of such
change.

         11.      TERMINATION OR AMENDMENT OF THE PLAN

The Board shall have the right to amend or  terminate  the Plan at any time.  An
Award,  however, may not in any way be affected or limited by any Plan amendment
or termination  approved  after the date of the Award without the  Participant's
written consent.

         12.      REGULATORY COMPLIANCE AND LISTING

The delivery of any shares  under this Plan may be postponed by the  Corporation
for such period as may be required  to comply with any  applicable  requirements
under the Federal or State  securities  laws,  any  applicable  listing or other
requirements  of any national  securities  exchange and  requirements  under any
other law or  regulation  applicable  to the  delivery of such  shares,  and the
corporation shall not be obligated to deliver any shares under this Plan if such
delivery  shall  constitute  a violation  of any  provision of any law or of any
regulation of any governmental authority or any national securities exchange. In
addition,  the shares when  delivered  may be subject to  conditions,  including
transfer restrictions, if required to comply with applicable securities law.

         13.      MISCELLANEOUS

The  shares  of  Common  Stock to be  delivered  under  the  Plan may be  either
authorized but unissued shares or shares which have been or may be reacquired by
the Corporation, as determined from time to time by the Committee.

         14.      TRANSFERABILITY

No  Awards  and no right  under  any such  Awards  shall  be  transferable  by a
Participant  otherwise than by will or by the laws of descent and  distribution;
provided, however, that if so determined by the Committee, a Participant may, in
the manner established by the Committee:

                                     - 3 -
<PAGE>

     (a) designate a beneficiary or  beneficiaries to exercise the rights of the
         Participant and receive any property  distributable with respect to any
         Awards upon the death of the Participant, or;

     (b) transfer  an  Award  to any  member  of such  Participant's  "immediate
         family" (as such term is defined in Rule  16a-1(e)  promulgated  by the
         Securities and Exchange Commission under the Securities Exchange Act of
         1934, as amended, or any successor rule or regulation) or to a trust or
         family   partnership   whose   beneficiaries   are   members   of  such
         Participant's "immediate family."

No Award or right  under any such Award may be pledged,  alienated,  attached or
otherwise   encumbered,   any  purported  pledge,   alienation,   attachment  or
encumbrance thereof shall be void and unenforceable against the Corporation.

         15.      DEFERRAL OF AWARDS

Each Participant shall be entitled to defer all or a portion of an Award subject
to the terms and conditions set forth below:

(a)        Election to Defer Calendar Year Vesting.  On or before December 31 of
           any year, each  Participant  shall be entitled to make an irrevocable
           election to defer  receipt of all or a portion of any Award that will
           vest and would otherwise be distributed  under the terms of this Plan
           in the second  calendar year following the year in which the election
           is made.

(b)        Election as to Period of  Deferral.  Each  employee  shall also make,
           within the time specified in Subsection  (a) an irrevocable  election
           as to the period of deferral  and  distribution  in  accordance  with
           Subsection  (f). The elections  set forth in any notice  described in
           this paragraph 15 shall pertain only to the period for which they are
           made,  and if no election  is made for a period no  deferral  will be
           made.

(c)        Separate  Accounts.  Separate accounts for each deferral period shall
           be established  and maintained  for each  Participant.  Such accounts
           shall  be  book  entries  maintained  by  the  Corporation,  and  the
           existence  of such book  entries  shall not  create  and shall not be
           deemed  to create a trust of any kind,  or a  fiduciary  relationship
           between the  Corporation  and any  Participant or  beneficiary.  Such
           accounts shall reflect the amount  deferred for each deferral  period
           specified in each election form by the Participant.  In the event two
           or more accounts reflect deferred amounts which are to be paid at the
           same  time,  all  such  accounts  shall be  aggregated  into a single
           account.

(d)        Dividends   Credited.   As  of  each  dividend   payment  date,  each
           Participant's  accounts  shall be credited  with the  dividends  that
           would be paid with  respect  to Common  Stock  vested and held in the
           Participant's  accounts  on  the  dividend  payment  date  as if  the
           Participant  owned the stock credited.  Dividends will be credited as
           if reinvested in whole or fractional shares on the dividend date.

(e)        Election of Distribution. Any amount deferred for any period plus any
           dividends  attributable  thereto  shall be  payable  under the method
           selected  by  the  Participant   under  subsection  (f),  unless  the
           Participant  terminates  employment  before the Elected  Distribution
           Date or receives a hardship withdrawal in accordance with subsections
           (h) or (i), respectively, before the period of deferral has expired.
           
                                     - 4 -
<PAGE>                                                

(f)        Method of  Distribution.  At the time the Participant elects to defer
           an Award pursuant to subsection (a), the  Participant shall also make
           an irrevocable election as to (i) the beginning date of  distribution
           with respect to amounts so  credited  to the  accounts;  and (ii) the
           number of annual installments,  not in excess of ten, over which such
           distribution will be made.  Payments,  subject to the  provisions  of
           subsections (h) and (i) shall  commence  within 30 days following the
           date of  distribution  specified  by  the  Participant  in his or her
           deferral election  (the  "Elected   Distribution  Date");   provided,
                                                                       --------
           however, that the Committee may in its sole discretion determine that
           -------
           payments shall be made  over a  shorter  period  or in more  frequent
           installments, or  commence on an earlier  date,  or any or all of the
           above.

(g)        Installment  Payments.  Annual  installments  will be paid  within 30
           days of the Elected  Distribution Date or on the Actual  Distribution
           Date,  and every  twelve  months thereafter.  The amount of the first
           payment shall be a fraction of the total balances of the 
           Participant's accounts for such period as of the last day of the
           month   preceding  the  Elected   Distribution   Date  or  the Actual
           Distribution Date (whichever is applicable), the numerator of which 
           is  one  and  the   denominator  of  which  is  the  total  number of
           installments elected. The amount of each subsequent payment shall be 
           a fraction  of the  amount as of the last day of the month  preceding
           each subsequent  payment,  the  numerator  of  which  is one  and the
           denominator of which is the total number of installments remaining.

(h)        Termination  of  Employment  Prior  to  Distribution   Date.  If  the
           Participant  terminates  employment prior to the Elected Distribution
           Date,  payments shall  commence  within 30 days of the first business
           day of the first calendar year following the year in which employment
           terminated.  The date that  payments  commence  shall be the  "Actual
           Distribution  Date,"  and  distributions  shall  be made in the  same
           number of annual  installments as had been elected by the Participant
           at the time of the deferral  election;  provided,  however,  that the
           Committee may, in its sole discretion, determine that distribution to
           a terminated employee shall commence on any earlier or later date.

(i)        Hardship  Withdrawals.  If  a  Participant  or  beneficiary  would 
           otherwise suffer severe financial hardship and distribution of 
           amounts credited to the accounts has not yet  commenced,  deferral of
           amounts may be  suspended  and  payment  of amounts  credited  to the
           accounts shall commence within 30 days following the determination of
           the  Committee  that  such  hardship  resulted  from an unforeseeable
           emergency  that is  caused  by an  event  beyond  the control  of the
           Participant  or  beneficiary.  Such  suspension or withdrawal may not
           exceed the amount  necessary to meet the  emergency.  For purposes if
           this  subsection,  "unforeseeable  emergency" is  defined as a severe
           financial hardship to the Participant or beneficiary resulting from a
           sudden  and  unexpected  illness or  accident  of the Participant  or
           beneficiary  or a  dependent  (as  defined in  Internal Revenue  Code
           Section 152(a)) of the  Participant or  beneficiary, loss of property
           due to casualty,  or other  similar  extraordinary and  unforeseeable
           circumstances  arising as a result of events  beyond the control of a
           Participant or beneficiary.  Payment may not be made to a Participant
           or beneficiary to the extent that such hardship is or may be relieved
           through (i)  reimbursement or compensation by insurance or otherwise;
           or (ii) by the liquidation of the Participant's assets, to the extent
           the liquidation of such assets would not itself cause severe 
           financial hardship.

                                     - 5 -
<PAGE>
(j)        Distribution  Upon  Death  after  Payments  Have  Commenced.  If  any
           Participant  dies  before  receiving  all  amounts  credited  to such
           Participant's  accounts,  the  unpaid  amounts  in the  Participant's
           accounts   shall  be  paid  to  the   Participant's   beneficiary  or
           beneficiaries  in  accordance  with  the last  effective  beneficiary
           designation form filed by the Participant.  Such unpaid amounts shall
           be paid in the same  manner and at the same time as had been  elected
           by the Participant prior to such Participant's death.

(k)        Form of  Distribution.  Distributions  will be in the form of  Common
           stock, provided, however, that the Committee, in its sole discretion,
           may modify  such form of  distribution.  Furthermore,  the  Committee
           shall  have the  discretion  to  discharge  all or a  portion  of its
           obligation  under  this  paragraph  by paying to the  Participant  an
           amount of money equal to the Fair Market Value of all or a portion of
           the account, less applicable withholding taxes.

(l)        Participant  Rights.  A Participant  or  beneficiary  shall not have 
           any  interest  in the  deferred  Award and  dividends credited to his
           accounts until such accounts are  distributed  in accordance with the
           Plan.  All  amounts  deferred or  otherwise held for the account of a
           Participant  under the Plan  shall  remain the sole  property  of the
           Corporation, subject to the claims of general creditors and available
           for use for whatever  purposes are  desired.  With respect to amounts
           deferred  or  otherwise  held for the account of a  Participant,  the
           Participant  is merely a general creditor,  and the obligation of the
           Corporation hereunder is purely contractual and shall not be funded 
           or secured  in any  way.  The  notice  shall be  written  in a manner
           calculated to be understood by the  claimant.  The  Corporation shall
           afford a Participant or beneficiary whose claim for benefits has been
           denied 60 days from the date  notice of such denial is  delivered  or
           mailed in which to appeal the decision in writing to the Committee. 
           If the Participant  or  beneficiary  appeals the  decision in writing
           within 60 days, the Committee  shall review the written  comments and
           any  submissions of the  Participant  or  beneficiary  and render its
           decision regarding the appeal all within 60 days of such appeal.

(m)        Non-alienability and Nontransferability.  The rights of a Participant
           to the payment of Awards  deferred  pursuant to this paragraph  shall
           not be assigned, transferred, pledged or encumbered, or be subject in
           any manner to alienation or  anticipation.  No Participant may borrow
           against  his   accounts.   No  accounts   with  respect  to  deferred
           compensation   shall  be  subject  in  any  manner  to  anticipation,
           alienation, sale, transfer, assignment, pledge, encumbrance,  charge,
           garnishment,  execution,  or levy of any kind,  whether  voluntary or
           involuntary,  including any  liability  which is for alimony or other
           payments  for the  support of a spouse or former  spouse,  or for any
           other relative of any Participant.

(n)        Committee  Delegation.  The Committee may delegate its administrative
           responsibilities  as it shall, from time to time, deem advisable.

(o)        Payment of  Benefits  to Disabled  Individuals.  Any amounts  payable
           hereunder  to any  person  under  legal  disability  or  who,  in the
           judgment  of the  Corporation,  is  unable  to  properly  manage  his
           financial  affairs  may be paid to the legal  representative  of such
           person or may be applied for the benefit of such person in any manner
           which the Corporation may select.

                                     - 6 -
<PAGE>
(p)        Liability.  No member of the Board, no  employee  of the Corporation,
           and no member of the Committee  (nor the  Committee  itself) shall be
           liable  for  any act or  action  hereunder  whether  of  omission  or
           commission,  by any other member or  employee or by any agent to whom
           duties in  connection with the  administration  of the Plan have been
           delegated or, except in circumstances involving his bad faith,  gross
           negligence  or  fraud,  for  anything done or  omitted  to be done by
           himself. The Corporation will fully indemnify and hold the members of
           the  Committee harmless  from  any  liability  hereunder,  except  in
           circumstances  involving  a  Committee   member's  bad  faith,  gross
           negligence, or fraud.  The  Corporation  or the Committee may consult
           with legal counsel,  who may be counsel for the  Corporation or other
           counsel, with respect to its obligation or duties hereunder,  or with
           respect to any action or proceeding or any question of law, and shall
           not be liable with  respect to any  action  taken or omitted by it in
           good faith pursuant to the advice of counsel.

(q)        Unfunded  Status  of the  Plan.  Any  and  all  payments  made to the
           Participant  pursuant to the Plan shall be made only from the general
           assets of the  Corporation.  All accounts under the Plan shall be for
           bookkeeping  purposes  only and shall not  represent a claim  against
           specific assets of the  Corporation.  Nothing  contained in this Plan
           shall be deemed to create a trust of any kind or create any fiduciary
           relationship.

         16.      EFFECTIVE DATE OF THE PLAN

The Plan as  amended  and  restated  shall  become  effective  as of the date of
approval of this Plan by the Board and the stockholders of the Company.


<PAGE>


<TABLE>

<CAPTION>
                                                                                  EXHIBIT 11

                        Aon Corporation and Subsidiaries

                  CONSOLIDATED NET INCOME PER SHARE COMPUTATION


  
                                                                      First Quarter Ended
                                                                  ---------------------------
(millions except per share data)                                    March 31,     March 31,
                                                                      1997           1996
                                                                  ------------   ------------

EARNINGS PER SHARE (1)
<S>                                                               <C>            <C>        
  Net income ..................................................   $       0.7    $     118.9
  Preferred stock dividends ...................................           3.4            5.1
                                                                  ============   ============
    NET INCOME AVAILABLE FOR COMMON STOCKHOLDERS...............   $      (2.7)   $     113.8
                                                                  ============   ============


  Average common shares issued ................................         171.2          167.1
  Net effect of treasury stock activity and dilutive stock
      compensation plans based on the treasury stock method ...          (2.0)          (2.5)
                                                                  ------------   ------------
      Average common and common equivalent shares
        outstanding............................................         169.2          164.6
                                                                  ============   ============
NET INCOME (LOSS) PER SHARE ...................................   $     (0.02)   $      0.69
                                                                  ============   ============
<FN>
(1) Adjusted to reflect the three-for-two stock split effective May 1, 1997.
</FN>                                                             
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                                                                                               Exhibit 12(a)
                                                Aon CORPORATION AND CONSOLIDATED SUBSIDIARIES
                                                 COMBINED WITH UNCONSOLIDATED SUBSIDIARIES
                                              COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES


                                                    First Quarter
                                                    Ended March 31,                       Years Ended December 31,
                                              ---------------------   ---------------------------------------------------------
(millions except ratios)                          1997        1996        1996        1995        1994        1993        1992(1)
                                              ---------   ---------   ---------   ---------   ---------   ---------   ---------
                                                                                                                                   
               
<S>                                           <C>         <C>         <C>         <C>         <C>         <C>         <C>     
Income from continuing operations
  before provision for income taxes (2)       $   15.2    $  145.6    $  445.6    $  458.0    $  397.0    $  331.6    $  179.1

Add back fixed charges:

Interest on indebtedness                          14.6        13.8        44.7        55.5        46.4        42.3        41.9

Interest on ESOP                                   1.0         1.2         4.3         5.3         5.9         6.5         6.9

Portion of rents representative of
  interest factor                                 14.7         6.7        28.6        21.4        28.7        26.1        19.2
                                              ---------   ---------   ---------   ---------   ---------   ---------   ---------

  INCOME AS ADJUSTED                          $   45.5    $  167.3    $  523.2    $  540.2    $  478.0    $  406.5    $  247.1
                                              =========   =========   =========   =========   =========   =========   =========

FIXED CHARGES:

Interest on indebtedness:                     $   14.6    $   13.8    $   44.7    $   55.5    $   46.4    $   42.3    $   41.9

Interest on ESOP                                   1.0         1.2         4.3         5.3         5.9         6.5         6.9

Portion of rents representative of
  interest factor                                 14.7         6.7        28.6        21.4        28.7        26.1        19.2
                                              ---------   ---------   ---------   ---------   ---------   ---------   ---------

  TOTAL FIXED CHARGES                         $   30.3    $   21.7    $   77.6    $   82.2    $   81.0    $   74.9    $   68.0
                                              =========   =========   =========   =========   =========   =========   =========

RATIO OF EARNINGS TO FIXED CHARGES                 1.5         7.7         6.7         6.6         5.9         5.4         3.6
                                              =========   =========   =========   =========   =========   =========   =========

Ratio of earnings to fixed charges (3)             6.3                     7.9                                             4.9
                                              =========               =========                                       =========

<FN>
(1)  Income from continuing operations before provision for income taxes
     excludes the cumulative effect of changes in accounting principles.
(2)  Income from continuing operations before provision for income taxes and
     minority interest includes special charges of $145 million in first 
     quarter ended March 31, 1997 and $90.5 million and $86.5 million in the 
     the years ended December 31, 1996 and 1992, respectively.     
(3)  The  calculation  of this ratio of earnings to fixed  charges reflects the
     exclusion of special charges from income from continuing operation before 
     provision for income taxes component for the first quarter ended March 31, 
     1997 and the years ended December 31, 1996 and 1992, respectively.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>
                                                                                                              Exhibit 12(b)
                                                  Aon CORPORATION AND CONSOLIDATED SUBSIDIARIES
                                                    COMBINED WITH UNCONSOLIDATED SUBSIDIARIES
                                           COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES
                                                          AND PREFERRED STOCK DIVIDENDS


                                                    First Quarter
                                                    Ended March 31,                       Years Ended December 31,
                                              ---------------------   ---------------------------------------------------------
(millions except ratios)                          1997        1996        1996        1995        1994        1993        1992(1)
                                              ---------   ---------   ---------   ---------   ---------   ---------   ---------


<S>                                           <C>         <C>         <C>         <C>         <C>         <C>         <C>     
Income from continuing operations
  before provision for income taxes (2)       $   15.2    $  145.6    $  445.6    $  458.0    $  397.0    $  331.6    $  179.1

Add back fixed charges:

Interest on indebtedness                          14.6        13.8        44.7        55.5        46.4        42.3        41.9

Interest on ESOP                                   1.0         1.2         4.3         5.3         5.9         6.5         6.9

Portion of rents representative of
  interest factor                                 14.7         6.7        28.6        21.4        28.7        26.1        19.2
                                              ---------   ---------   ---------   ---------   ---------   ---------   ---------

  INCOME AS ADJUSTED                          $   45.5    $  167.3    $  523.2    $  540.2    $  478.0    $  406.5    $  247.1
                                              =========   =========   =========   =========   =========   =========   =========

FIXED CHARGES AND PREFERRED STOCK DIVIDENDS:

Interest on indebtedness:                     $   14.6    $   13.8    $   44.7    $   55.5    $   46.4    $   42.3    $   41.9

Preferred stock dividends                         19.4         7.8        28.7        37.5        48.4        47.5        20.3
                                              ---------   ---------   ---------   ---------   ---------   ---------   ---------

  INTEREST AND DIVIDENDS                          34.0        21.6        73.4        93.0        94.8        89.8        62.2

Interest on ESOP                                   1.0         1.2         4.3         5.3         5.9         6.5         6.9

Portion of rents representative of
  interest factor                                 14.7         6.7        28.6        21.4        28.7        26.1        19.2
                                              ---------   ---------   ---------   ---------   ---------   ---------   ---------

  TOTAL FIXED CHARGES AND PREFERRED
    STOCK DIVIDENDS                           $   49.7    $   29.5    $  106.3    $  119.7    $  129.4    $  122.4    $   88.3
                                              =========   =========   =========   =========   =========   =========   =========


RATIO OF EARNINGS TO COMBINED FIXED
  CHARGES AND PREFERRED STOCK DIVIDENDS (3)        0.9         5.7         4.9         4.5         3.7         3.3         2.8
                                              =========   =========   =========   =========   =========   =========   =========

Ratio of earnings to combined fixed
  charges and preferred stock dividends (4)        3.8                     5.8                                             3.8
                                              =========               =========                                       =========

<FN>
(1)  Income  from  continuing  operations  before  provision  for  income  taxes
     excludes the cumulative effect of changes in accounting principles.
(2)  Income from continuing operations before provision for income taxes and  
     minority interest includes special charges of $145 million in first quarter  
     ended March 31, 1997 and $90.5 million and $86.5 million in the years ended 
     December 31, 1996 and 1992, respectively.
(3)  The ratio of earnings to combined fixed charges and preferred stock dividends 
     for first quarter ended March 31, 1997 is less than a one-to-one coverage 
     indicating that earnings are inadequate to cover fixed charges by $4.2 million.
     Included in total fixed charges and preferred stock dividends for first
     quarter ended March 31, 1997 are $14.1 million of pretax distributions on
     the 8.205% trust preferred captial securities which are classified as 
     "minority interest" on the condensed consolidated statements of operations.
(4)  The  calculation  of this ratio of earnings to fixed  charges  reflects the
     exclusion of special charges from the income from continuing operations before
     provision for income taxes component for the first quarter ended March 31, 1997
     and the years ended December 31, 1996 and 1992, respectively.                    
                                                                
</FN>
</TABLE>

<PAGE>

                                                                 Exhibit 15





Board of Directors and Stockholders
Aon Corporation


We are aware of the incorporation by reference in the Registration Statements of
Aon Corporation ("Aon") described in the following table of our report dated May
1, 1997  relating to the  unaudited  condensed  consolidated  interim  financial
statements of Aon Corporation that are included in its Form 10-Q for the quarter
ended March 31, 1997:

Registration Statement
Form    Number                               Purpose

S-8    33-27984       Pertaining to Aon's savings plan
S-8    33-42575       Pertaining to Aon's stock award plan and stock option plan
S-8    33-59037       Pertaining to Aon's stock award plan and stock option plan
S-3    33-57562       Registration  of Aon's 8% cumulative  perpetual  preferred
                         stock and 6 1/4% cumulative convertible exchangeable 
                         preferred stock
S-4    333-21237      Offer to exchange Capital Securities of Aon Capital A

Pursuant to Rule 436(c) of the  Securities Act of 1933, our report is not a part
of the registration  statements  prepared or certified by accountants within the
meaning of Section 7 or 11 of the Securities Act of 1933.


                                                   /s/ Ernst & Young LLP
                                                   ---------------------
                                                   
                                                     ERNST & YOUNG LLP



Chicago, Illinois
May 1, 1997

<TABLE> <S> <C>

<ARTICLE>                                                       7
<LEGEND>                                                                      
This statement contains summary financial information extracted from
Condensed Consolidated Statements of Financial Position and Condensed
Consolidated Statements of Operations and is qualifed in its entirety by
reference to such financial information.
</LEGEND>
<MULTIPLIER>                                               1000000
       
<S>                                                    <C>
<PERIOD-TYPE>                                                3-MOS
<FISCAL-YEAR-END>                                      Dec-31-1997
<PERIOD-START>                                         Jan-01-1997
<PERIOD-END>                                           Mar-31-1997
<DEBT-HELD-FOR-SALE>                                          2734
<DEBT-CARRYING-VALUE>                                            0
<DEBT-MARKET-VALUE>                                              0
<EQUITIES>                                                     711
<MORTGAGE>                                                      25
<REAL-ESTATE>                                                   14
<TOTAL-INVEST>                                                5061
<CASH>                                                        1270
<RECOVER-REINSURE>                                               0
<DEFERRED-ACQUISITION>                                         575
<TOTAL-ASSETS>                                               17317
<POLICY-LOSSES>                                               1081
<UNEARNED-PREMIUMS>                                           1980
<POLICY-OTHER>                                                 841
<POLICY-HOLDER-FUNDS>                                          558
<NOTES-PAYABLE>                                                964 <F2>
                                           50
                                                      6 <F4> <F5>
<COMMON>                                                       171 <F3>
<OTHER-SE>                                                    2519
<TOTAL-LIABILITY-AND-EQUITY>                                 17317
                                                     384
<INVESTMENT-INCOME>                                            116
<INVESTMENT-GAINS>                                               2
<OTHER-INCOME>                                                 852 <F6>
<BENEFITS>                                                     205
<UNDERWRITING-AMORTIZATION>                                     54
<UNDERWRITING-OTHER>                                           935
<INCOME-PRETAX>                                                 15
<INCOME-TAX>                                                     6
<INCOME-CONTINUING>                                              9
<DISCONTINUED>                                                   0
<EXTRAORDINARY>                                                  0
<CHANGES>                                                        0
<NET-INCOME>                                                     1 
<EPS-PRIMARY>                                                (0.02)
<EPS-DILUTED>                                                    0
<RESERVE-OPEN>                                                 715
<PROVISION-CURRENT>                                              0 <F1>
<PROVISION-PRIOR>                                                0 <F1>
<PAYMENTS-CURRENT>                                               0 <F1>
<PAYMENTS-PRIOR>                                                 0 <F1>
<RESERVE-CLOSE>                                                  0 <F1>
<CUMULATIVE-DEFICIENCY>                                          0 <F1>
<FN>
<F1> Available on an annual basis only.
<F2> Includes short-term borrowings and debt guarantee of ESOP.
<F3> Common stock at par value;  adjusted to reflect  three-for-two  stock split
     effective May 1,1997.
<F4> Preferred stock at par value.
<F5> Does not include Company-obligated Mandatorily Redeemable Preferred Capital
     Securities of Subsidiary Trust holding solely to Company's Securities.
<F6> Includes brokerage commissions and fees and other income.
</FN>
        

</TABLE>


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