- 1993 - 2001 Shiga University Faculty of Economics
- 1993 - 2001 Shiga University Professor
- 2001 - - 香川大学法学部 教授
- 2001 - - Kagawa University Professor
- 1990 - 1993 Shiga University
- 1990 - 1993 Shiga junior college of Economics Professor
- 1983 - 1990 Shiga University
- 1983 - 1990 Shiga junior college of Economics Assistant professor
- 1979 - 1983 Shiga University
- 1979 - 1983 Shiga junior college of Economics Lecturer
- 1977 - 1979 Shiga University
- 1977 - 1979 Assistant of Shiga junior college of Economics
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