- 2006/11/01 - 2020/03/31 RIKKYO UNIVERSITY Law School Committee Chairman
- 2004/04/01 - 2020/03/31 RIKKYO UNIVERSITY Graduate School of Law and Politics Field of Study: Law and Politics Professor
- 2004/04/01 - 2020/03/31 RIKKYO UNIVERSITY Law School Field of Study: Law Professor
- 2000/04/01 - 2004/03/31 RIKKYO UNIVERSITY College of Law and Politics Professor
- 1997/04/01 - 2000/03/31 Meiji Gakuin University Faculty of Law
- 1996/01/01 - 1997/03/31 Osaka Prefecture University School of Economics
- 1988/04/01 - 1995/12/31 Osaka Prefecture University School of Economics
- 1985/04/01 - 1988/03/31 Osaka Prefecture University School of Economics
- 1984/04/01 - 1985/03/31 Osaka Prefecture University School of Economics
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