Adecco is a multinational staffing and recruitment company based in Zurich, Switzerland, with its US headquarters in Jacksonville, Florida. The company was founded in 1957, originally as Esec, a Swiss engineering and technical recruiting firm. It later merged with Swiss firm Adia Interim to create Adecco in 1996.

Adecco provides a wide range of human resource (HR) services to businesses and job seekers. Their main services include temporary staffing, permanent placement, career transition services, and talent development. They offer solutions for various industries, including finance, IT, engineering, healthcare, manufacturing, and hospitality.

With operations in more than 60 countries, Adecco has a strong global presence. The company has several noteworthy subsidiaries and joint ventures, including Modis, Badenoch + Clark, and Spring Professional. In 2010, Adecco acquired MPS Group, a leading US staffing and professional services firm, expanding its reach in the American market.

Adecco is the world's largest staffing company and has consistently been ranked as a top player in the global staffing industry. In terms of global sales, Adecco's revenue reached €23. 41 billion in 2020.

The company's market position is strengthened by its extensive global network and diverse range of HR services. It competes with other major staffing firms such as Randstad and ManpowerGroup. In terms of major events, in 2019 Adecco made changes to its strategy by focusing on digital transformation and investing in technology to enhance its services.

The company aims to leverage automation and artificial intelligence to improve matching job candidates with suitable roles. As of the latest available information, Adecco continues to be a dominant player in the staffing and recruitment industry. The company remains committed to providing innovative HR solutions to meet the evolving needs of businesses and job seekers