As previously indicated we think that determination of the case hinges on whether, under all the circumstances, the applicable laws and regulations could be complied with (in *444the absence of approval by the War Labor Board) only by continuing the old basic rate for the first 40 hours of each workweek and increasing the rate to “time and one-half” for hours over 40, or whether the parties could lawfully agree on a new schedule of hourly rates which preserved substantially the same total wage for the full workweek but which, by reducing the hourly rate for the first 40 hours and increasing the rate for hours over 40, complied with the requirement for “time and one-half” for the hours over 40. To express it another way, did the applicable provisions of the law and executive regulations, under the circumstances shown, operate by themselves necessarily to increase the total wage for the full workweek or was the agreement of the parties for adjustment of the hourly rates to comply with the required overtime rates but continue substantially the same total wage for the full workweek lawful? We conclude that under the circumstances shown the agreement is not void and that the higher total wage was not imposed by law.