| September 2009 | Chief Cabinet Secretary under Prime Minister Hatoyama |
| August 2009 | 5th term member of the House of Representatives for district Osaka-11 |
| May 2009 to September 2009 | Director, Executive Office, DPJ |
August 2007 to May 2009
(September 2004 to September 2005) | Acting Secretary-General, DPJ |
March 2006 to August 2007
(May 2004 to September 2004) | Acting Chairman, Diet Affairs Committee, DPJ |
| October 2005 to October 2007 | Member of the Japanese National Commission for UNESCO |
| September 2005 to September 2006 | Director-General for General Affairs, and Coordination, DPJ |
| September 2005 | 4th term member of the House of Representatives |
| January 2004 to May 2004 | Director-General for Research, DPJ |
| November 2003 | 3rd term member of the House of Representatives |
| September 2002 to January 2004 | Chairman, Public Relations Committee, DPJ |
| July 2000 | Lead Director, Committee of Science and Technology |
| June 2000 | 2nd term member of the House of Representatives |
| October 1996 | Elected as a member of the House of Representatives for the first time |
| December 1983 | Senior Secretary, Office of Mr. Masao Nakamura, Member of the House of Representatives |
| April 1971 | Matsushita Electric Industrial Co., Ltd |
| March 1971 | Graduated from Faculty of Science and Engineering, Chuo University |
