| June 2007 | Minister of Agriculture, Forestry and Fisheries |
| September 2005 | Elected to the HRi44th General Electionj |
| November 2004 | Chairman, Special Committee on North Korean Abuductionsand Other Issues (until Nov. 2005) |
| November 2003 | Elected to the HRi43rd General Electionj |
| October 2002 | Senior Vice Minister for Defence (until Sep. 2003) |
| January 2002 | Chairman, Special Committee on Political Ethics and Election Law, HR (until Oct. 2002) |
| July 2000 | Chairman, Standing Committee on Transport, HR (until Jan. 2001) |
| June 2000 | Elected to the HR (42nd General Election) |
| October 1996 | Elected to the HR (41st General Election) |
| January 1996 | Parliamentary Vice-Minister for Management and Coordination Agency (until Nov. 1996) |
| July 1993 | Elected to the HR (40th General Election) |
| February 1990 | Elected to the HR (House of Representatives) (39th General Election) |
| October 1988 | Left the Ministry |
| April 1983 | Entered Ministry of Agriculture, Forestry and Fisheries |