1 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 20) KELLY SERVICES, INC., CLASS B ----------------------------------------- (NAME OF ISSUER) COMMON STOCK ----------------------------------------- (TITLE OF CLASS OF SECURITIES) 488152307 ---------------------------- (CUSIP NUMBER) 12/31/00 ---------------------------- (DATE) CHECK THE FOLLOWING BOX IF FEE IS BEING PAID WITH THIS STATEMENT -----------------------------------------------------

2 CUSIP NO. 488152307 --------------- - -------------------------------------------------------------------------------- 1) Names of Reporting Persons I.R.S. No. 31-0738296 S.S. or I.R.S. Identification Nos. of BANK ONE CORPORATION Above Persons - -------------------------------------------------------------------------------- 2) Check the Appropriate Box if a Member of a Group (a) ______________ (See Instructions) (b) ______________ - -------------------------------------------------------------------------------- 3) SEC Use only - -------------------------------------------------------------------------------- 4) Citizenship or Place of Organization ILLINOIS - -------------------------------------------------------------------------------- Number of Shares (5) Sole Voting Power 108,782 ---------------- Beneficially (6) Shared Voting Power 2,262,290 ---------------- Owned by (7) Sole Dispositive Power 11,637 ---------------- Each Reporting (8) Shared Dispositive Power 2,371,072 ---------------- Person with - -------------------------------------------------------------------------------- 9) Aggregate Amount Beneficially 2,382,709 ---------------- Owned by Each Reporting Person - -------------------------------------------------------------------------------- 10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) - -------------------------------------------------------------------------------- 11) Percent of Class Represented by Amount in Row 9 68.2% ---------------- - -------------------------------------------------------------------------------- 12) Type of Reporting Person (See Instructions) HC ----------------

3 - -------------------------------------------------------------------------------- SEC 13G SECURITIES AND EXCHANGE COMMISSION SCHEDULE 13G Amendment No. 20 Item 1(a) Name of Issuer: Kelly Services, Inc., Class B ------------------------------ Item 1(b) Address of Issuer's principal executive offices: 999 West Big Beaver Road Troy, MI 48084 ------------------------------ Item 2(a) Name of person filing: BANK ONE CORPORATION Item 2(b) Address of principal business office or, if none residence: One First National Plaza Chicago, IL 60670 Item 2(c) Citizenship: Not Applicable Item 2(d) Title of class of securities: Common Stock ---------------------- Item 2(e) CUSIP No.: 488152307 ---------------------- Item 3. This statement is filed pursuant to Rule 13d-1(c). Item 4. Ownership This beneficial ownership by BANK ONE CORPORATION with respect to common shares of Kelly Services, Inc. : ----------------------------------------- (a) Amount beneficially owned: 2,382,709 ---------------- (b) Percent of class 68.2% ---------------- (c) Number of shares as to which such person has: (I) Sole power to vote or to direct the vote: 108,782 ---------------- (ii) Shared power to vote or to direct the vote: 2,262,290 ---------------- (iii) Sole power to dispose or to direct the disposition of: 11,637 ---------------- (iv) Shared power to dispose or to direct the disposition of: 2,371,072 ----------------

4 Item 5. Ownership of 5 percent or less of a Class. N/A ------- Item 6. Ownership of More than 5 percent on Behalf of Another Person. N/A ------- Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company. -------------- Bank One Trust Company, N.A. Bank One, Florida Item 8. Identification and Classification of Members of the Group. N/A ------- Item 9. Notice of Dissolution of Group. N/A ------- Item 10. Certification. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete, and correct. Dated: February 14, 2001 ------------------------- BANK ONE CORPORATION By: /s/ DAVID J. KUNDERT David J. Kundert EXECUTIVE VICE PRESIDENT