Rajashree Shahu Maharaj (Chhatrapati Shahu of Kolhapur) was a significant social reformer who extended his reformist zeal beyond his kingdom, supporting the upliftment of backward classes and workers. Historical accounts suggest that in 1918-1919, he advised workers in Bombay (Mumbai) to organize themselves and form unions or associations, potentially including the 'People's Union' (or similar bodies), to fight for their rights and improve their working conditions.