In N.L.R.B. v. Brown Root, Inc., 311 F.2d 447, 454 (C.A. 8), it is said that "in a back pay proceeding the burden is upon the General Counsel to show the gross amounts of back pay due.
In Reynolds Pallet Box Co. v. NLRB, 324 F.2d 833 (6th Cir. 1963), the employer engaged in coercive conduct during a campaign to organize the employees and discriminatorily discharged employees because of their union activity.