Oriental Consultants Company Limited (OC), established on December 24, 1957, is a leading Japanese consulting firm headquartered in Tokyo. With a workforce of approximately 1,000 employees, including 800 engineers and specialists, OC offers a comprehensive range of consulting services across various sectors. These include infrastructure development (bridges, roads, airports, ports, railways), architectural works, water resources management, agricultural engineering, urban and rural development, oil and gas facilities, tourism, information technology, and environmental protection. OC boasts a global presence, having undertaken projects in over 150 countries. Its parent company, Oriental Consultants Holdings Co., Ltd., is listed on the Tokyo Stock Exchange. OC Global, a separate entity formed in 2014 from OC's Global Consulting Division, manages international projects.