Work Week and Hours of Work The standard workweek is from Saturday 12:00 a.m. until Friday 11:59 p.m. and generally consists of 40 work hours. Corporate office hours are Monday through Friday, 8:00 a.m. to 5:00 p.m., with a 1 hour lunch break. Individual work schedules may vary depending on the needs of each department and the nature of operations of the employing company in the group.