 He was also the president of many other labour unions, such as the Rastirya Colliery Mazdoor Sangh (RCMS), the Indian National Mineworkers' Federation (INMF), and the Bokaro Steel Workers Union.Dubey started his Trade Union movement in mid 1940s before independence when the collieries of India were in private hands where colliery owners and contractors used to exploit the contract labourers.He campaigned for better wages and working conditions for coal miners, visiting many countries like West Germany, U.K., Belgium, the Netherlands, France, Yugoslavia, Switzerland and Japan to acquaint himself with employment conditions in mines and factories.