Kelly Services Inc. KELYA, -1.49% said Friday that Chief Executive Carl Camden will step down, effective May 10, after 11 years in the role and 22 years at the company. Camden is leaving the company to pursue opportunities in public service, as he has been named a finalist to be Oakland University’s next president. The staffing services company has pegged Chief Operating Officer George Corona at its CEO, effective May 11. Corona has been COO since January 2009. Kelly’s stock has shed 11% year to date through Thursday, while the S&P 500 SPX, -0.68% has gained 4%.