| 1993-95 |
: Member of the House of Representatives (Ehime 1st District) |
| 1995-00 |
: Member of the House of Councilors (Ehime District) |
| 1996 |
: Director, Standing Committee on Budget, House of Councilors |
| 1996-97 |
: Director, Standing Committee on Audit, House of Councilors |
| 1997-98 |
: Parliamentary Vice-Minister of Finance |
| 1999-00 |
: Chairman, Judicial Affairs Division, Liberal Democratic Party of Japan (LDP) |
| : Chief Director, Standing Committee on Justice, House of Councilors |
| 2000- |
: Member of the House of Representatives (Ehime 1st District) |
| 2000-01 |
: Chairman, Foreign Affairs Division, LDP |
| 2001-03 |
: Director, Standing Committee on Judicial Affairs, House of Representatives |
| 2002-03 |
: Chairman, Treasury and Finance Division, LDP |
| 2003-04 |
: Chief Director, Standing Committee on Judicial Affairs, House of Representatives |
| 2004-05 |
: Chairman, Standing Committee on Judicial Affairs, House of Representatives |
| 2005-06 |
: Senior Vice-Minister for Foreign Affairs |
| 2006-07 |
: Chief Cabinet Secretary , Minister of State for the Abduction Issue |
| 2010 |
: Director, Committee on Budget, House of Representatives |
| 2011 |
: Chairman, Press Bureau, LDP |
| 2012 |
: Acting chairman, Policy Research Council, LDP |
| |
: Chief Director, Special Committee on Nuclear Affairs, House of Representatives |
| 2013 |
: Chief Director, Standing Committee on Budget, House of Representatives |
| 2014- |
: Minister of Health, Labour and Welfare |