Section 6 of the Fair Labor Standards Act of 1938 (29 U.S.C. 206) requires that each employee, not specifically exempted, who is engaged in commerce, or in the production of goods for commerce, or who is employed in an enterprise engaged in commerce, or in the production of goods for commerce receive a specified minimum wage. Section 7 of the Act (29 U.S.C. 207) provides that persons may not be employed for more than a stated number of hours a week without receiving at least one and one-half times their regular rate of pay for the overtime hours. The amount of money an employee should receive cannot be determined without knowing the number of hours worked. This part discusses the principles involved in determining what constitutes working time. It also seeks to apply these principles to situations that frequently arise. It cannot include every possible situation. No inference should be drawn from the fact that a subject or an illustration is omitted. If doubt arises inquiries should be sent to the Administrator of the Wage and Hour Division, U.S. Department of Labor, Washington, DC 20210, or to any area or Regional Office of the Division.