Kelly Services, Inc. is a Fortune 500 company headquartered in Troy, Mich., offering human resources solutions that include temporary services, staff leasing, outsourcing, vendor on-site and full-time placement. With more than 2,300 company owned and operated offices in 26 countries, Kelly provides to its customers 800,000 employees annually, with skills including office services, accounting, engineering, information technology, law, science, marketing, light industrial, education and health care.