(a) Section 11 of the Portal Act provides that in any action brought under the Fair Labor Standards Act to recover unpaid minimum wages, unpaid overtime, compensation, or liquidated damages, the court may, subject to prescribed conditions, in its sound discretion award no liquidated damages or award any amount of such damages not to exceed the amount specified in section 16 (b) of the Fair Labor Standards Act.
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137 Section 16(b) of the Fair Labor Standards Act provides that an employer who violates the minimum-wage or overtime provisions of the act shall be liable to the affected employees not only for the amount of the unpaid minimum wages or unpaid overtime compensation, as the case may be, but also for an additional equal amount as liquidated damages. The courts have held that this provision is "not penal in its nature" but rather that such damages "constitute compensation for the retention of a workman's pay" where the required wages are not paid "on time." Under this provision of the law, the courts have held that the liability of an employer for liquidated damages in an amount equal to his underpayments of required wages become fixed at the time he fails to pay such wages when due, and the courts were given no discretion, prior to the enactment of the Portal-to-Portal Act, to relieve him of any portion of this liability. See Brooklyn Savings Bank v. O'Neil,324 U.S. 697; Overnight Motor Transp. Co. v. Missel,316 U.S. 572.