- 2018/04 - 現在 Musashino University
- 2011/04 - 現在 Professor Emeritus
- 2019/04 - 2021/03 Kawaguchi Junior College
- 2013/06 - 2019/06 NTT都市開発株式会社 社外取締役
- 2014/04 - 2018/03 Musashino University Faculty of Economics, Department of Business Administration
- 2012/04/01 - 2014/03/31 Musashino University Faculty of Political Science and Economics
- 2011/04 - 2012/03 Musashino University Faculty of Political Science and Economics, Department of Political Science and Economics
- 2000/04 - 2011/03 Professor
- 1992/04 - 2000/03 Professor
- 1996/08 - 1997/08 Visiting Researcher
- 1989/01 - 1992/03 Professor
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