In this example, employees can report to work any time between 7:30 and 9:00 a.m. and leave any time between 4:00 and 5:30 p.m. The mandatory periods are the morning hours from 9:00 a.m. until the lunch break and the afternoon hours from lunch to 4:00 p.m. Thus, employees work a mini mum 6 hour workday The option daily maxi mum is 9 1/2 hours. How long each employee works is established individually as a function of the company's needs.