- 2010/04 - 2019/03 Professor(tenured), Department of Psychology, Faculty of Letters, Chuo University
- 2011/04 - 2011/09 Part-time Lecturer, Meisei University
- 2007/04 - 2010/03 Associate Professor, Department of Psychology, Faculty of Letters,Chuo University
- 2005/04 - 2007/03 Assistant Professor, Department of Psychology, Faculty of letters, Chuo University
- 2005/10 - 2006/03 Part-time Lecturer, The Open University of Japan
- 1995/04 - 2005/03 Private Practice, Clinical Psychology
- 2002/04 - 2004/03 Part-time Lecturer, Niigata University of Pharmacy and Applied Life Sciences
- 2002/08 - 2003/03 Part-time Lecturer, The Open University of Japan
- 1996/04 - 1999/03 Guest Professor, Niigata College of Technology
- 1989/05 - 1995/03 Chief Counselor, Student Counseling Center, Temple University Japan
- 1988/04 - 1989/04 Director of Planning Division, Akimoto Hospital
- 1986/04 - 1988/03 Chief Investigator, Corrections Bureau, Japanese Ministry of Justice
- 1984/04 - 1986/03 Deputy Chief Investigator, Corrections Bureau, Japanese Ministry of Justice
- 1979/04 - 1984/03 Correctional Specialist in Psychology, Ichihara Prison, Japanese Ministry of Justice
- 1977/04 - 1979/03 Correctional Specialist in Psychology, Tokyo Juvenile Classification Home, Japanese Ministry of Justice
- 1976/04 - 1977/03 Correctional Specialist in Psychology, Nakano Prison, Japanese Ministry of Justice
- 1974/10 - 1976/03 Part-time Clinical Psychologist, Sayamagaoka Hospital