- 2004 - 2011 岡山大学社会文化科学研究科 教授
- 2004 - 2011 Professor,Okayama University, Graduate School of Humanities and Social Sciences,Graduate School of Humanities and Social Sciences,Okayama University
- 2011 - - 岡山大学岡山大学 理事・副学長
- 2011 - - 岡山大学社会文化科学研究科 教授
- 2011 - - Executive Director and Vice President,Okayama University,Okayama University
- 2011 - - Professor,Okayama University, Graduate School of Humanities and Social Sciences,Graduate School of Humanities and Social Sciences,Okayama University
- 1989 - 2004 岡山大学法学部 教授
- 1989 - 2004 Professor,Okayama University, Faculty of Law Department,Faculty of Law,Okayama University
- 1984 - 1989 岡山大学法学部 准教授
- 1984 - 1989 Associate Professor,Okayama University, Faculty of Law Department,Faculty of Law,Okayama University