When the first law governing factories in India was introduced under British rule in the 19th century, workers got a set of rights related to their working conditions, one of which included a cap on working hours in a week.
The Factory Act of 1881 set the maximum number of working hours in a week at 72 (12 hours a day if a person worked six days in a week). It was also partly because of the pressure that British authorities faced from mill owners back home in Lancashire, who feared that they were losing out to competition coming from