KOS International Holdings Limited, an investment holding company, provides human resources (HR) services to clients from various industries in Hong Kong, Macau, the People's Republic of China, and Singapore. The company offers recruitment, and secondment and payroll services. It offers its services under the KOS Executive, KOS Recruitment, KOS Staffing, KOS Solutions, and KOS China brands. The company was founded in 2009 and is headquartered in Tsim Sha Tsui, Hong Kong. KOS International Holdings Limited is a subsidiary of KJE Limited.