The document summarizes the history of industrial legislation in India in three stages:
1) The preliminary stage from 1857-1918 saw the first laws addressing working conditions like the Factories Act limiting women and children's hours. Laws also protected employers' interests.
2) The development period from 1919-1947 saw more laws as unions grew, including the Trade Disputes Act regulating strikes and collective bargaining.
3) After independence, the Constitution enshrined principles of social and economic justice. New laws like the Minimum Wages and Employees' State Insurance Acts aimed to improve conditions.