UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Name of Issuer)

Class B Common Stock, $1.00 Par value

(Title of Class of Securities)

Class B Common Stock - 488152307

(CUSIP Number)

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

October 9, 2018

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. o

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

This statement on Schedule 13D relates to the Class B Common Stock, $1.00 par value (the “Class B Stock”), of Kelly Services, Inc., a Delaware corporation (the “Issuer”). The Issuer’s principal offices are located at 999 West Big Beaver Road, Troy, Michigan 48084.

Terence E. Adderley Revocable Trust K (“Trust K”);

Andrew H. Curoe, as co-trustee of Trust K;

David M. Hempstead, as co-trustee of Trust K;

William U. Parfet, as co-trustee of Trust K (together with Mr. Curoe and Mr. Hempstead, the “Trust K Trustees”);

c/o Andrew H. Curoe, Trustee

6^th Floor at Ford Field

1901 St. Antoine Street

Detroit, MI 48226

6^th Floor at Ford Field

1901 St. Antoine Street

Detroit, MI 48226

Trust K was created by Terence E. Adderley during his lifetime as a revocable trust, with Mr. Adderley serving as the trustee of, and retaining the right to revoke, Trust K. During his lifetime, Mr. Adderley funded Trust K, including a gift of 3,139,940 shares of Class B Stock to Trust K. Mr. Adderley died on October 9, 2018, at which time the trust became irrevocable. In accordance with the provisions of Trust K, the Trust K Trustees were appointed as successor trustees of the trust.

Mr. Curoe may be deemed the beneficial owner of an additional 72,825 shares of Class B Stock held by trusts where Mr. Curoe acts as trustee or co-trustee, including ten trusts holding 100 shares of Class B Stock each, and one trust holding 71,825 shares of Class B Stock.

The Reporting Persons do not have any present plans which relate to or would result in (a) the acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer; (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries; (c) a sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries; (d) any change in the present board of directors or management of the Issuer, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the board; (e) any material change in the present capitalization or dividend policy of the Issuer; (f) any other material change in the Issuer's business or corporate structure; (g) changes in the issuer's charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the issuer by any person; (h) causing a class of securities of the issuer to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association; (i) a class of equity securities of the issuer becoming eligible for termination of registration pursuant to section 12(g)(4) of the Act; or (j) any action similar to any of those enumerated above.

(a–b) The aggregate number and percentage of the shares of Class B Stock beneficially owned by each Reporting Person set forth below and on pages 2-5 hereof are based on 3,431,972 shares of Class B Stock outstanding as of July 30, 2018.

(c) None.

(d) None.

(e) Not applicable.

The Trust K Trustees must act by majority vote to exercise investment or voting power over the Class B Shares owned by Trust K. Pursuant to Rule 13d-4 of the Securities Exchange Act of 1934 (the “Exchange Act”), this filing shall not be deemed an admission that the Trust K Trustees are, for purposes of Section 13(d) of the Exchange Act or otherwise, the beneficial owner of any equity securities reported herein.

SIGNATURE

After reasonable inquiry, and to the best of my knowledge and belief, the undersigned hereby certify that the information set forth in this statement is true, complete and correct.

Date: October 19, 2018

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13D referred to below) on behalf of each of them a statement on Schedule 13D (including amendments thereto, if any) with respect to the shares of Class B Common Stock of Kelly Services, Inc., a Delaware corporation, and that this Agreement may be included as an Exhibit to such joint filing.

Each of the undersigned agrees to be responsible for the timely filing of the Schedule 13D and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of the 19th day of October, 2018.