1. Our Company

Our Company

Message from Our Leadership

Based on our 50 years of experience in civil engineering technologies, we will continue to contribute to Japan and the world.


Founded in 1963, Yachiyo Engineering Co., Ltd. (yec) is now one of the largest firms of consulting engineers, planners, architects and specialists operating throughout the world.


YEC's main client base in Japan includes the Ministry of Land, Infrastructure, Transport and Tourism and other central ministries and agencies, local municipalities and public corporations, including the Japan Highway Public Corporation. The percentage of project orders by these clients in Japan accounts for some 80% of YEC's annual revenue.

Japan's ODA Project constitutes the central pillar of YEC's overseas work which accounts for some 15% of the annual revenue and the main clients include JICA, JBIC and government organizations in Indonesia, Malaysia, the Philippines, India, Brazil and other developing countries.