The National Insurance Act of 1911 established Britain's first national health insurance system and "sick pay" for workers. It required all workers aged 16-70 earning less than £160 per year to pay weekly contributions. In return, workers received 10 shillings per week for 13 weeks of sick leave, then 5 shillings for another 13 weeks. This helped prevent sick workers from becoming impoverished but only provided for up to 26 weeks of leave. The system was criticized for not covering long-term illnesses or dependents. It also faced opposition over costs and mandatory medical inspections of children.