[2] Vaz was greatly inspired by Ram Manohar Lohia and the events of Goa Revolution Day, describing Lohia's inspiration of Goan freedom fighters as, "18th June was like a big Light House that guided many ships traveling in the sea.

On 28 October 1946, he was arrested after he attempted to deliver a speech in Sanquelim, following which he was imprisoned and then left across the border of Portuguese Goa on 19 November that year.

In April 1961, Vaz and Cajetan Lobo, both secretaries of the National Campaign Committee, took part in a three-day Conference of Nationalist Organisations of the Portuguese Colonies at Casablanca, Morocco.

[7] Vaz was a prominent Communist trade union leader, having led multiple workers' protests and strikes in both Goa and Bombay.

He was also the General Secretary of All India Trade Union Congress in Goa and was a member of its national Executive Committee.

[8] Vaz also contested in the 1967 Goa, Daman and Diu Legislative Assembly election but did not win.

[9] Vaz contested elections from the South Goa Lok Sabha constituency as a candidate of the CPI in 1984 but did not win.