| April | 1971 | Appointed as Assistant Judge |
| April | 1981 | Judge, Tokyo District Court |
| April | 1985 | General Manager, Training Div., United Nations Asia and Far East Institute for the Prevention of Crime and the Treatment of Offenders |
| April | 1994 | General Judge, Tokyo District Court |
| February | 2003 | Director, Morioka District and Family Courts |
| February | 2005 | General Judge, Tokyo High Court |
| March | 2009 | Director, Sapporo High Court |
| February | 2011 | Registered as an attorney |
| April | 2011 | Professor, Graduate School of Law, Meiji University |
| March | 2015 | Auditor (present post) |