 He worked hand-in-hand with Vishnu Deo, in June 1930, to establish the Fiji Indian Labour Union to represent unemployed Punjabi immigrants.In the build-up to the 1932 elections, Indo-Fijian leader Vishnu Deo needed a candidate to oppose a rebel candidate who had nominated for a seat in the Legislative Council against the call for boycott from Vishnu Deo and other leaders, K. B. Singh was an obvious choice.He was regarded as a loyal supporter of Vishnu Deo and common roll.