The document discusses the history and development of the trade union movement in India. It began as a social welfare movement from 1875-1918, as reformers worked to improve conditions for workers. The first union, the Bombay Mill Hands Association, was formed in 1890. From 1918-1924, the early trade union period emerged as workers officially organized unions. Over time, different periods brought left-wing, unified, and post-independence influences to the evolving trade union movement in India.