| September 2006 | Minister of Health, Labour and Welfare |
| November 2005 | Chairman, Research Commission on the Tax System, LDP (until September 2006) |
| January 2001 | Minister of State for Financial Services (until September 2002) |
| December 2000 | Minister of State and Chairman, Financial Reconstruction Commission (until January 2001) |
| December 1998 | Minister of State and Chairman, Financial Reconstruction Commission (until October 1999) |
| October 1998 | Minister of State for Financial Reconstruction (until December 1998) |
| July 1998 | Minister of State for National Land Agency (until October 1998) |
| March 1998 | Chairman, Committee on Health and Welfare, House of Representatives (until July 1998) |
| July 1994 | Parliamentary Secretary for Foreign Affairs (until August 1995) |
| June 1980 | Member of the House of Representatives |