From the advent of the eight-hour day until the late 1970s, most Australian blue-collar workers were tied to a 9am-5pm, Monday-to-Friday work schedule. Because most pubs were only permitted to stay open until 6 pm, workers would commonly head for the nearest pub as soon as they finished work at 5 pm, where they would drink as much as possible, as quickly as possible, in the hour before the pub closed. This practice came to be known as the "six o'clock swill".