When the workweek reform arrives and the employer thinks that changing the time clock and notifying the shift manager is enough, the inspection arrives and asks for the document that almost no one keeps up to date: the internal work regulations. That is where the simulation falls apart. Because if your regulations still say "Monday to Saturday from 8:00 AM to 5:00 PM" and in practice you are going to operate 40 hours a week, you have a document that contradicts your operation, and that is a major legal problem.