Liberals in 1906–1911 passed major legislation designed to reform politics and society, such as the regulation of working hours, National Insurance and the beginnings of the welfare state, as well as curtailing the power of the House of Lords. Women's suffrage was not on the Liberal agenda. There were numerous major reforms helping labour, typified by the Trade Boards Act 1909 that set minimum wages in certain trades with the history of "sweated" or "sweatshop" rates of especially low wages, because of surplus of available workers, the presence of women workers, or the lack of skills. At first it applied to four industries: chain-making, ready-made tailoring, paper-box making, and the machine-made lace and finishing trade. It was later expanded to coal mining and then to other industries with preponderance of unskilled manual labour by the Trade Boards Act 1918. Under the leadership of David Lloyd George Liberals extended minimum wages to farm workers.