In 1964 he employed at Toyota Motor Corporation and worked at the production department and was mainly involved with production technology such as welding, pressing, and the assembly process. Acted as a manager at the Headquarters plant, production director Production technology department, department director Tahara plant, production director Tahara plant, deputy general manager and other positions. 1985- three years Dispatched to Gifu Auto Body Co. Ltd. (1st tier supplier) and led improvement activities at this company as well as at associated companies as a director of the production engineering department and production department.
In 1998-2003 employed at HORIE METAL CO., LTD (1st tier supplier) Also he also involved in management as executive director and led improvement activities at this company as well as at associated companies. From 2004 onwards, he is working as a TPS consultant in Hirayama Corporation