- 2024/04 - 現在 Notre Dame Seishin University Department of Information Design Professor
- 2023/04 - 2024/03 Fukuyama University Faculty of Economics Department of International Economics Professor, Head of the Department
- 2022/04 - 2023/03 Fukuyama University Faculty of Economics, Department of International Economics Professor
- 2020/04 - 2022/03 Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries International Department Economist
- 2007/04 - 2020/03 Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries Department of International Agro-Food Economics Research Senior Economist
- 2002/04 - 2007/03 Policy Research Institute, Ministry of Agriculture, Forestry and Fisheries Unit of European Agro-Food Economy Head of Unit
- 2001/06 - 2002/03 Ministry of Agriculture, Forestry and Fisheries Retail Food Business Division, Department of Food Marketing and Distribution Assistant Director
- 1996/11 - 2001/05 The Organization of Economic Cooperation and Development Directorate for Food, Agriculture and Fisheries Economist
- 1996/02 - 1996/10 Ministry of Agriculture, Forestry and Fisheries Economic Research and Analysis Division, the Minister's Secretariat Assistant Director
- 1993/10 - 1996/01 Ministry of Agriculture, Forestry and Fisheries Edible Oil Division, Department of Food Marketing and Distribution Assistant Director
- 1992/07 - 1993/09 Food Agency Processed Food Division Assistant Director
- 1990/02 - 1992/06 Ministry of Agriculture, Forestry and Fisheries Policy Planning Division, the Minister's Secretariat Senior Staff
- 1988/04 - 1990/01 Ministry of Agriculture, Forestry and Fisheries Sugar and Starch Division, Department of Food Marketing and Distribution Senior Staff
- 1986/08 - 1988/03 Ministry of Agriculture, Forestry and Fisheries Economic Research and Analysis Division, the Minister's Secretariat Senior Staff
- 1984/05 - 1986/07 Organization of Economic Cooperation and Development Directorate for Food, Agriculture and Fisheries Associated Expert
- 1983/04 - 1984/05 Ministry of Agriculture, Forestry and Fisheries International Cooperation Division, Department of Economy staff
- 1982/04 - 1983/03 Ministry of Agriculture, Forestry and Fisheries Trade and Tariff Division, Department of Economy staff