Tokyo District Public Prosecutor's Office (1969-1970, 1975-1977, 1985-1986), Professor of the Judicial Research and Training Institute (1982-1985, 1993-1995), Director of the International Affairs Division, Criminal Affairs Bureau (1990-1991), Chief Prosecutor of Miyazaki District Public Prosecutor's Office (1996-1997), Assistant Vice Minister of Justice (1997-1999), Director General of the Rehabilitation Bureau (1999-2001), Director of the Public Security Department, Supreme Public Prosecutor's Office (2001-2002)