TROY, MI--(Marketwire - January 20, 2011) - Kelly Services, Inc. (NASDAQ: KELYA) (NASDAQ: KELYB), a leader in providing workforce solutions, will release its fourth quarter and year end earnings before the market opens on Thursday, February 3, 2011. The company will host a conference call, including a question and answer opportunity, to discuss the financial results at 9:00 a.m. ET.