Overtime is time spent working that goes above and beyond the number of hours required to be at the workplace for a given time period.
Overtime is the amount of time beyond normal working hours that an employee spends working. In many places this is time spent beyond a 40 hour work week, though some countries (and states) have different laws.
Typically, when worked hourly, overtime carries with it additional pay for the time beyond the normal work week. This is often mandated by law.
Overtime may not apply for certain professions or payroll approaches (e.g. salary, live in caretakers, etc..).
- Overtime at Wikipedia