☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 29, 2019 OR For the transition period from _________ to __________ Commission file number 0-1088 KELLY SERVICES, INC. (Exact Name of Registrant as specified in its Charter) (State or other jurisdiction of incorporatio ...