Thomas is also responsible for the coordination of Unions NSW’s Visa Assist Project. A partnership with the Immigration Advice and Rights Centre (IARC), Visa Assist was launched in 2019 to assist unions in representing and advocating for migrants and in particular the project provides free immigration legal support and advice to migrants who are union members.

Prior to his role at Unions NSW, Thomas worked as an industrial officer and lawyer with the national offices of the Australian Rail, Tram and Bus Industry Union and the Australian Workers’ Union, he has also worked as a solicitor for Slater & Gordon Lawyers and the HIV Aids Legal Centre (HALC).