1 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 18) KELLY SERVICES, INC., CLASS B ----------------------------- (NAME OF ISSUER) COMMON STOCK ----------------------------- (TITLE OF CLASS OF SECURITIES) 488152307 ----------------------------- (CUSIP NUMBER) DECEMBER 31, 1998 ----------------------------- (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 122,224 ------------------ Beneficially (6) Shared Voting Power 2,262,290 ------------------ Owned by (7) Sole Dispositive Power 1,172 ------------------ Each Reporting (8) Shared Dispositive Power 193,502 ------------------ Person with - -------------------------------------------------------------------------------- 9) Aggregate Amount Beneficially 2,384,514 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 66.85% ------------------ - -------------------------------------------------------------------------------- 12) Type of Reporting Person (See Instructions) HC ------------------

3 - -------------------------------------------------------------------------------- SEC 13G SECURITIES AND EXCHANGE COMMISSION SCHEDULE 13G Amendment No. 18 Item 1(a) Name of Issuer: Kelly Services, Inc. -------------------- Item 1(b) Address of Issuer's principal executive offices: 999 West Big Beaver -------------------- Troy, MI -------------------- 48084 -------------------- Item 2(a) Name of person filing: BANK ONE CORPORATION Item 2(b) Address of principal business office or, One First National Plaza if none residence: 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., Class B -------------------------------------------- ----------------------------------------------------------------: (a) Amount beneficially owned: 2,384,514 -------------------- (b) Percent of class 66.85% -------------------- (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 122,224 --------- (ii) Shared power to vote or to direct the vote: 2,262,290 --------- (iii) Sole power to dispose or to direct the disposition of: 1,172 --------- (iv) Shared power to dispose or to direct the disposition of: 193,502 ---------

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. ------ NBD Bank (Michigan) Bank One, Kentucky, NA 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: 4/14/99 ------------- BANK ONE CORPORATION By: /s/ DAVID J. KUNDERT David J. Kundert EXECUTIVE VICE PRESIDENT