In NLRB v. Local 1291, 368 F.2d 107, 110 (3rd Cir. 1966), cert. denied, 386 U.S. 1033, 87 S.Ct. 1482, 18 L.Ed.2d 595 (1967), Judge Hastie wrote that "the valuable part of a right to a particular job is the right to be paid for it. It follows that if workmen, who are entitled to a job under the terms of a labor contract, agree to forego the obligation of working but not the concomitant right to payment, they have not disclaimed any significant right."