- 1981 - 1986 Waseda University School of Humanities and Social Sciences
- 1981 - 1986 Waseda University, Associate Professor
- 1986 - - 早稲田大学文学部教授
- 1986 - - Waseda University, Professor
- 1984 - 1985 米国ワシントン州立大学客員助教授
- 1984 - 1985 The University of Washington, Visiting Associate Professor
- 1978 - 1981 Waseda University School of Humanities and Social Sciences
- 1978 - 1981 Waseda University, Lecturer
- 1973 - 1978 Hitachi, Ltd., Central Research Laboratory
- 1973 - 1978 Hitachi Central Research Laboratory, Researcher
- 1965 - 1969 労働省(現厚生労働省)技官
- 1965 - 1969 Ministry of Labor, National Institute of Industrial Safety, Researcher
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