In Australia during the 1850s skilled workers in Sydney and Melbourne generally worked a 58 hour week; 10 hours per day Monday to Friday with 8 hours on Saturday. For other workers it was longer; shop assistants, for example, worked between 12-14 hours per day. Child labour was not uncommon; in 1876 in New South Wales, for example, the NSW Coal Mines Act was passed to limit the working week for boys aged 13-18 years to 50.5 hours per week and ban the employment of girls or boys in mines under the age of 13. The idea that working people should work less hours, enjoy and improve their lives, and have some control over their working conditions were radical propositions, as was the idea the working day should be based on eight-hours of work. Eight hours of work per day was not only problematical for employers and the State because it was an attack on untrammeled wealth production, but problematical also in that it left working people with unaccounted for hours; if they were not producing wealth for employers and taxes for the State and getting tired and exhausted in the process, then they might be out doing other things like thinking, improving themselves with reading, education and discussion, socialising, enjoying life, and maybe organising and challenging the status quo.