An extended workday isn’t necessarily and agreed-upon amount of time. In fact, the definition is that the workday is longer than “normal.” Many employees who work extended workdays work 8-12 hour shifts, but they typically don’t work five days every week.
Even employees who work a “normal” work schedule don’t always work regular hours. In fact, employees who work a regular 40-hour work week usually end up working 47 hours every week on average. This is especially true for salaried employees who don’t necessarily log hours or get overtime payment.