- 2023/04 - 現在 國學院大學 大学院文学研究科 非常勤講師
- 2021/04 - 現在 Toho University Faculty of Medicine
- 2021/04 - 現在 死生学研究所 所長
- 2020/04 - 現在 Toyo Eiwa University The Faculty of Human Sciences The Department of Human Sciences Professor
- 2021/10 - 2022/03 The University of Tokyo Graduate School of Humanities and Sociology
- 2007/04 - 2020/03 Nanzan Institute for Religion and Culture, Nanzan University Research Fellow
- 2007/04 - 2020/03 Nanzan University Faculty of Humanities
- 2015/06 - 2017/06 Hartford Seminary Summer Course Instructor
- 2012/04 - 2016/03 Nanzan Institute for Religion and Culture Director
- 1998/04 - 2007/03 Nanzan Institute for Religion and Culture, Nanzan University Research Fellow
- 2000 - 2007 Nanzan University Faculty of Humanities
- 1997/09 - 1998/03 Princeton University (Princeton, NJ) Visiting Research Fellow
- 1998 - Nanzan University
- 1997/01 - 1997/08 Emory University (Atlanta, GA) Visiting Scholar
- 1996/07 - 1996/12 Institute of Buddhist Studies (Berkeley, CA) Visiting Scholar
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International Sociological Association
, 「宗教と社会」学会
, 社会思想史学会
, 日本社会学会
, アメリカ学会
, 日本宗教学会
, European Association for the Study of Religion
, International Society for the Sociology of Religion
, American Academy of Religion