<P> In Hong Kong, the working week begins on Monday and ends on Saturday, while Saturday is usually a half day, and Sunday is a rest day . Most of the local enterprises operate on Saturday, while manufacturing facilities and construction site premises often run on a full - day . However, the five - day working week has been encouraged by the Government in 2006, most of multinational enterprises and some private companies run a five - day working week as well . Besides, a number of employees also have alternative Saturdays off . </P> <P> Most commercial establishments, shops, museums, libraries and cinemas open on Saturday, Sunday and most public holidays . On the other hand, banks and mail offices open on Saturday morning in general . For schools, normal lessons are seldom held on Saturdays, but students may be required to go school on Saturdays for extra-curricular activities or make - up classes . </P> <P> Most office jobs work on Monday to Friday 9: 00 a.m. to 6: 00 p.m. (1: 00 to 2: 00 p.m. for lunch break) and Saturday 9: 00 a.m. to 1: 00 p.m. usually . However, it is noted that employees commonly have to work overtime for several hours per day . </P> <P> In general, Colombia has a 48 - hour working week . Depending on the business, people work five days for max 8 hours per day, typically Monday to Friday, or six days for eight hours a day, Monday to Saturday . </P>

When did the concept of a weekend begin