F umio Kaneko is a Japanese billionaire whose wealth is primarily derived from his significant stake in Outsourcing Inc., a major Japanese staffing and outsourcing company. He has been a key figure in the company, which has grown to become a significant player in the temporary staffing and contract services industry in Japan and internationally.

Outsourcing Inc. provides a wide range of services, deploying contract workers to factories and other businesses, particularly in the manufacturing sector. The company has grown aggressively through a series of acquisitions, expanding its footprint both within Japan and in other countries. Kaneko's fortune is tied to his large ownership stake in this publicly traded and rapidly growing services company.