Solasto Corp. engages in the provision of medical and welfare-related services. It operates through the following business segments: Medical Outsourcing, Elderly and Child Care, and Others. The Medical Outsourcing segment provides medical-related contractual services such as reception, accounting, medical fee billing, and hospital management support services. The Elderly and Child Care segment offers home help service, day service, home care support, short-term inpatient living care service, and pay nursing home. The Others segment includes real estate leasing and non-life insurance agency business. The company was founded in October 1965 and is headquartered in Tokyo, Japan.