| 1967 | Joined to the Ministry of International Trade and Industry (MITI) |
| 1983 | Director, Washington Office, Japan National Oil Corporation |
| 1985 | Director, Price Policy Division, Industrial Policy Bureau, MITI |
| 1986 | Retired from MITI |
| 1990 | Elected to the Member of the House of Representatives |
| 1994 | Parliamentary Vice-Minister for Economic Planning |
| 1997 | Director, Transport Division, Liberal Democratic Party (LDP) |
| 1998 | Member of the Special Committee on Promotion of Remote@Islands, Council for National Land |
| 1998 | Director, Foreign Affairs Division, LDP |
| 1999 | Parliamentary Secretary for International Trade and Industry |
| 2001 | Deputy Secretary-General, LDP |
| 2001 | Director-General, Election Bureau, LDP |
| 2002 | Minister of State for Okinawa and Northern Territories Affairs
Minister of State for Science and Technology Policy
Minister of State for IT Policy |
