[3] He was the leader of the Ceylon Workers' Congress, a Member of Parliament representing the Nuwara Eliya District and was an advocate for the Indian Tamils of Sri Lanka.

[6] In December 2019, he was appointed as the cabinet minister of Community Empowerment and Estate Infrastructure Development by the Sri Lankan President Gotabaya Rajapaksa.

[8] He was due to contest at the upcoming parliamentary election representing Sri Lanka Podujana Peramuna from the Nuwara Eliya district.

On the same day before his death, he had met with new Indian High Commissioner to Sri Lanka Gopal Baglay in order to discuss bilateral cooperation for community development.

The funeral of Thondaman was held on 31 May 2020 in Norwood, village in Nuwara Eliya amid curfew in the area with state honours and the politicians including Prime Minister Mahinda Rajapaksa paid their last respect and tribute.