- 2001 - 2006 Meisei University School of Economics, Department of Economics
- 2006 - - 明星大学 経済学部 経済学科 教授
- 1997 - 2001 Meisei University School of Humanities
- 1988 - 2001 大月短期大学 非常勤講師
- 1988 - 2001 Lecturer
- 1998 - 2000 Chuo University
- 1998 - 2000 Lecturer
- 1993 - 1997 Meisei University School of Information Science, Department of Management Information
- 1993 - 1995 Chuo University
- 1993 - 1995 Lecturer
- 1990 - 1991 Chuo University
- 1990 - 1991 Lecturer
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