- 2024/04 - 現在 Yokohama National University executive director, Professor Emeritus
- 2023/04 - 現在 Musashino University visiting professor
- 2004/04 - 現在 Tokyo Family Court Domestic Relations Conciliation Commissioner
- 2013/04 - 2024/03 Yokohama Natiional University, Graduate School of International Social Sciences, Professor
- 2017/04 - 2023/09 Chiba University Law School Guest Lecturer
- 2017/04 - 2023/02 Kantou Regional Police School Guest Lecturer
- 2017/09 - 2021/03 Keio University Law School Guest Lecturer
- 2011/04 - 2014/03 Seijo University, Faculty of Law, Part-time Lecturer
- 2003/04 - 2013/03 Dokkyo University, Faculty of Law, Professor
- 2011/04 - 2011/09 Keio University, Law School , Part-time Lecturer
- 2010/10 - 2011/03 Keio University, Faculty of Law, Part-time Lecturer
- 2006/04 - 2006/09 Keio University, Law School, Part-time Lecturer
- 2001/04 - 2004/03 Nara Family Court Domestic Relations Conciliation Commissioner
- 2001/04 - 2003/03 Tezukayama University, Faculty of Law and Policy, Professor
- 2000/01 - 2002/12 奈良家庭裁判所委員会 委員
- 1997/06 - 2001/09 Kyoto Sangyo University, Faculty of Law, Part-time Lecturer
- 1997/04 - 2001/03 Tezukayama University, Faculty of Law and Policy, Associate Professor
- 1995/10 - 1997/03 Tezukayama University, Faculty of Economics, Part-time Lecturer