HIRAYAMA Holdings Co. Ltd. engages in the provision of manufacturing support services. It operates through the following segments: In-Sourcing and Temp Staffing Service, Engineering Placement Services, Overseas Operations, and Others. The In-Sourcing and Temp Staffing Service segment handles the manufacturing site contracting and dispatching business. The Engineering Placement Services segment deals with the dispatch and consignment business of specific workers such as development design engineers. The Overseas Operations segment covers the overseas worker dispatching business. The Others segment includes consulting, education, and paid employment businesses. The company was founded by Joichi Hirayama in December 1955 and is headquartered in Tokyo, Japan.