Callback pay is generally pay to an employee who has previously left the employer's premises and is asked to return to work before the next scheduled work period. No federal law guarantees employees a minimum number of hours when they are called back to work. However, the hours they do work must be paid for at the employees' base rates or at the applicable overtime rate.
Callback pay applies when employees report to work at the normal starting time but are unable to work because of some unusual condition at the place of employment. No federal law requires employers to pay employees in this situation. Callback pay may also apply when employees are on call but not actually working. It is also referred to as on-call pay and report-in pay.