- 1987 - 1989 駒沢大学 非常勤講師
- 1987 - 1989 Komazawa University, Part-time Instructor
- 1986 - 1989 Daito Bunka University
- 1986 - 1989 Hosei University
- 1986 - 1989 Daito Bunka University, Part-time Instructor
- 1986 - 1989 Hosei University, Part-time Instructor
- 1985 - 1986 Hosei University Ohara Institute for Social Research Hosei University
- 1985 - 1986 Ohara Institute for Spcial Research, Hosei University, Part-time Researcher
- 1973 - 1974 国民経済研究協会 専門研究員
- 1973 - 1974 Kokumin Keizai Research Institute, Special Researcher
- Hokkaido College, Senshu University Professor
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