[1] Thigambaram runs a textile business and is leader of the National Union of Workers (NUW).

[4] He was re-elected at the 2009 provincial council election, this times as a United National Front (UNF) candidate.

[6][7] The NUW left the UNF alliance on 22 April 2010 after a dispute over National List seats.

[11][12] He resigned from the UPFA government on 10 December 2014 to support common opposition candidate Maithripala Sirisena at the presidential election.

[15][16] Thigambaram was one of the United National Front for Good Governance's candidates in Nuwara Eliya District at the 2015 parliamentary election.