Back Pay Order

What does Back Pay Order mean in American Law?

The definition of Back Pay Order in the law of the United States, as defined by the lexicographer Arthur Leff in his legal dictionary is:

A judicial or administrative order that a worker is to be paid wages theretofore withheld from him. The most common back pay order is that issued by the NLRB when an employee has been discharged or denied promotion in violation of a labor law, e.g., for helping to unionize a business, but such orders are also employed in cases involving unlawful racial or sexual discrimination in employment.