| October 2005 | Minister for Internal Affairs and Communications
Minister of State for Privatization of the Postal Services |
| September 2004 | Minister of State for Economic and Fiscal Policy
Minister of State for Privatization of the Postal Services |
| July 2004 | Elected to the House of Councillors |
| 2003 | Minister of State for Financial Services
Minister of State for Economic and Fiscal Policy |
| September 2002 | Minister of State for Financial Services
Minister of State for Economic and Fiscal Policy |
| April 2001 | Minister of State for Economic and Fiscal Policy |
| April 2001 | Member, IT Strategic Headquarters |
| July 2000 | Member, IT Strategy Council (advisory body of Former Prime Minister MORI Yoshiro) |
| August 1998 | Member, Economic Strategy Council (advisory body to Late Prime Minister OBUCHI Keizo) |
| 1996 | Professor, Faculty of Policy Management, Keio University |
| 1990 | Associate Professor, Faculty of Policy Management, Keio University |
| September 1989 | Visiting Fellow, Institute of International Economics |
| January 1989 | Visiting Associate Professor, Harvard University |
| 1987 | Associate Professor, Faculty of Economics, Osaka University |
| 1982 | Senior Economist, Institute of Fiscal and Monetary Policy, Ministry of Finance |
| 1981 | Visiting Scholar, Harvard University and University of Pennsylvania |
| 1977 | Entered the Research Institute of Capital Formation, Japan Development Bank |
| 1973 | Entered Japan Development Bank |
| 1973 | Graduated from Hitotsubashi University |
