The world of work has changed dramatically in recent decades. One area that has come under particular scrutiny is working hours. While traditional working weeks consist of five days, the idea of a four-day week has become increasingly popular in recent years. The four-day week is a working time structure in which employees only work four days a week instead of five. The weekly working hours remain the same, but the working hours are spread over the remaining four days. A 4-day week has many advantages that make it popular with employees and employers alike. Below we explore some of the reasons why the 4-day week has become such a popular working time option. One of the main reasons why employees choose to work a 4-day week is to achieve a better work-life balance. With an extra week off, employees can plan their free time better and spend time with family and friends.