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Kelly Services, Inc.
Formerly	Russell Kelly Office Service; Kelly Girl Service, Inc.;
Company type	Public
Traded as	Nasdaq: KELYA (Class A); S&P 600 Component
Industry	Professional services
Founded	1946; 78 years ago
Founder	William Russell Kelly
Headquarters	999 West Big Beaver Road, Troy, Michigan, United States
Areas served	North and South America; AsiaPacific; Europe, the Middle East, and Africa;
Key people	Peter Quigley (president & CEO)
Services	Human resource consulting; management consulting; outsourcing; recruitment; career transition; vendor management;
Revenue	US$4.52 billion (2020)
Operating income	US$67 million (2015)
Net income	US$−72 million (2020)
Total assets	US$2.562 billion (2020)
Total equity	US$1.203 billion (2020)
Number of employees	7,100 (2020)
Website	kellyservices.com

Kelly Services, Inc. (formerly Russell Kelly Office Service and Kelly Girl Service, Inc.) is an American office staffing company that operates globally.^[2]^[5]^[6]^[7] The company places employees at all levels in various sectors including financial services, information technology, and law.^[5] Also, its professional services include human resource and management consulting, outsourcing, recruitment, career transition, and vendor management.^[2]^[5] Kelly Services was founded by William Russell Kelly in 1946 and is headquartered in Troy, Michigan.^[2]^[8]

History

Founded in 1946 by William Russell Kelly, the company was originally named Russell Kelly Office Service.^[9]^[10] Services were provided in-house at the Kelly office. However, as customer offices grew and needed more resources, they began to ask for the Kelly employees to perform the work at their own offices. Temporary workers from Russell Kelly Office Service soon became known as ‘Kelly Girls’.^[11] Adelaide Hess Moran, the first Kelly temporary employee to work at a customer’s office, was promptly dubbed the first ‘Kelly Girl’.

The temporary workers, usually female, became known as "Kelly girls",^[11] and the company name was changed to Kelly Girl Service, Inc. in 1957.^[9] Eventually "Kelly girl" became a widely used term for a temporary worker, regardless of company affiliation or gender. By 1966, the company had expanded to include industrial and technical services divisions and was renamed Kelly Services, Inc.^[12]

In 2008, Lynn Noyes was awarded $6.5 million in damages from Kelly Services for failing to promote her because she was not part of the Fellowship of Friends cult.^[13]

In 2015, the company reported 8,100 employees, $5.5 billion in revenue,^[2]^[5] making it one of the world's largest staffing firms.^[14] In 2018, the company reported $5.5 billion in revenue.^[4]