No employer shall employ any of his employees who in any workweek is engaged in commerce or in the production of goods for commerce, or is employed in an enterprise engaged in commerce or in the production of goods for commerce, and who in such workweek is brought within the purview of this subsection by the amendments made to this chapter by the Fair Labor Standards Amendments of 1966—
(A)#
for a workweek longer than forty-four hours during the first year from the effective date of the Fair Labor Standards Amendments of 1966,
(B)#
for a workweek longer than forty-two hours during the second year from such date, or
(C)#
for a workweek longer than forty hours after the expiration of the second year from such date,
unless such employee receives compensation for his employment in excess of the hours above specified at a rate not less than one and one-half times the regular rate at which he is employed.