TOA Corp. (1885) engages in the planning, design, execution and supervision of civil engineering and architectural works, and consulting services. The company is headquartered in Shinjuku, Tokyo-To and currently employs 2,052 full-time employees. The firm operates through three business segments. The Domestic Civil Engineering Business segment is engaged in the domestic civil engineering works, as well as contract design-related works. The Domestic Construction Business segment is engaged in the domestic construction and contract design-related works. The Overseas Business segment is engaged in the overseas construction work-related businesses. The other businesses include real estate development, sales and leasing businesses, as well as businesses operated by its affiliated companies. The company also engages in ship building and repair, construction machinery manufacturing, sales and repair, private finance initiative (PFI) businesses, and other businesses.