(1) Rest. Rest periods of short duration, running from 5 minutes to about 20 minutes, are common in industry. They promote the efficiency of the employee and are customarily paid for as working time. They must be counted as hours worked. Compensable time of rest periods may not be offset against other working time such as compensable waiting time or on-call time.

(2) Meal.

(a) Bona fide meal periods. Bona fide meal periods are not worktime. Bona fide meal periods do not include coffee breaks or time for snacks. These are rest periods. The employee must be completely relieved from duty for the purposes of eating regular meals. Ordinarily 30 minutes or more is long enough for a bona fide meal period. A shorter period may be long enough under special conditions. The employee is not relieved if he is required to perform any duties, whether active or inactive while eating. For example, an office employee who is required to be at his machine is working while eating.

(b) Where no permission to leave premises. It is not necessary that an employee be permitted to leave the premises if he is otherwise completely freed from duties during the meal period.