A case against an employer company was filed charging it with having violated the prohibition against offsetting undertime for overtime work on another day. The complainants were able to show that, pursuant to the CBA, employees of the union had been required to work "overtime" on Saturday but were paid only at regular rates of pay on the thesis that they were not required to complete, and they did not in fact complete, the eight-hour work period daily from Monday through Friday. Given the circumstances, the employer contended that the employees were not entitled to overtime compensation, i.e., with premium rates of pay. Decide the controversy. (2003 BAR)