- 1998 - 現在 Doshisha University/Faculty of Law, Professor
- 2018/04 - 2019/03 Università degli Studi di Milano, ミラノ大学 Dipartimento di Scienze Sociali e Politiche, 政治社会学部 Visiting Fellow, 客員研究員
- 2012/10 - 2012/12 The University of Sheffield, シェフィールド大学 Department of Politics, 政治学部 Visiting Professor, 客員教授
- 2005 - 2005 Universite Paul Cezanne-Aix-Marseille III, Professeur Invite, 招聘客員教授
- 2000 - 2001 University of Michigan, Center for Political Studies, Visiting Scholar, 客員研究員
- 1997 - 1998 Doshisha University/Faculty of Law, Assistant Professor
- 1997 - 1998 同志社大学・法学部, 助教授
- 1998 - 同志社大学・法学部, 教授
- 1992 - 1997 Meijigakuin University/Faculty of Law, Assistant Professor,
- 1992 - 1997 明治学院大学・法学部, 助教授
- 1993 - 1995 University of Michigan, Center for Political Studies, Visiting Scholar, 客員研究員
- 1989 - 1992 Meijigakuin University/Faculty of Law, Lecturer,
- 1989 - 1992 明治学院大学・法学部, 専任講師