- 2017/04 - 現在 Hokkaido Chitose College of Rehabilitation Faculty of Health Science
- 2015/05 - 2017/03 北海道千歳リハビリテーション学院 教授
- 1995/01 - 2015/03 Hokkaido University Graduate School of Letters
- 2013/10 - 2014/03 The University of Tokyo
- 2009/10 - 2010/03 Toyo Eiwa University
- 2009 - 2010 Part-time researcher for university or other academic organization,The Institute of Thanatology, Toyo Eiwa University
- 2006/10 - 2007/03 東京大学大学院 人文社会系研究科 集中講義講師
- 2000/10 - 2001/03 東北大学大学院 文学研究科 集中講義講師
- 1999/02 - 1999/08 Georg-August-Universität Göttingen Visiting Professor
- 1998/09 - 1999/01 The University of Chicago The Center for the Advanced Study of Religion Senior Fellow
- 1989 - 1996 Associate Professor
- 1996 - - Professor
- 1989 - 1994/12 Hokkaido University
- 1985/04 - 1989/03 Muroran Institute of Technology Faculty of Engineering
- 1985 - 1989 Associate Professor
- 1976/04 - 1985/03 Hokkaido University Faculty of Letters
- 1976 - 1985 Research Associate,Instructor of Hokkaido University,1976; Associate Professor of Muroran Institute of Technology, 1985; Associate Professor of Hokkaido University, 1989; Professor of Hokkaido University, 1989.
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