| 1978-88 |
Member, Tripura Legislative Assembly (two times) |
| 1978-83 |
Chairman, Public Accounts Committee, Tripura Legislative Assembly |
| 1983-88 |
Cabinet Minister, Revenue, Health, Statistics, etc. Government of Tripura |
| 1998-2002 |
Member, Rajya Sabha |
| 1998 |
Member, Committee on Food, Civil Supplies & Public Distribution;Member, Consultative Committee, Ministry of Defence |
| 1999-2001 |
Member, Committee on Agriculture |
| 2001-2002 |
Chairman, Committee on Transport and Tourism ;Member, Privileges Committee, Rajya Sabha |
|
;Member, Committee on Labour and Welfare ;Member, Committee on Agriculture;Member, Committee on Public Accounts;Member, Consultative Committee, Ministry of Home Affairs |
| 2003-04 |
Member, Committee on Petroleum and Natural Gas |
| 2002 |
Elected to 13th Lok Sabha in bye-election |
| 2004 |
Re-elected to 14th Lok Sabha (2nd term);Member, Committee on Absence of Members from the sittings of the House |
| 7 Aug. 2006-onwards |
Member, Committee on Absence of Members from the Sittings of the House |
| 5 Aug. 2007 |
Member, Committee on Agriculture |
| 1 May 2008 |
Member, Committee on Public Accounts |
| 2009 |
Re-elected to 15th Lok Sabha (3rd term) |
| 6 Aug. 2009 |
Member, Committee on Public Accounts |
| 31 Aug. 2009 |
Member, Committee on Finance;Member, Consultative Committee, Ministry of Home Affairs |