A four-day week, or a compressed work schedule, is an arrangement where a workplace or school has its employees or students work or attend school over the course of four days per week rather than the more customary five. This arrangement can be a part of flexible working hours, and is sometimes used to cut costs, as seen in the example of the so-called "4/10 work week," where employees work a normal 40 hours across four days, i.e. a "four-ten" week. However, a four-day week can also be a fixed work schedule.