In Florida Power Light Co. v. IBEW, Local 641, 417 U.S. 790, 804-05, 94 S.Ct. 2737, 2744-45, 41 L.Ed.2d 477 (1974), the Supreme Court held that no § 8(b)(1)(B) violation occurs unless the disciplined conduct adversely affects the performance of his or her § 8(b)(1)(B) duties.
In American Broadcasting Cos. v. Writers Guild, West, Inc., 437 U.S. 411 (1978) (ABC), the Court found that discipline imposed on grievance-handling supervisors who crossed union picket lines violated § 8(b)(1)(B), even though the supervisor-members did not adjust grievances for the striking employees, but only for employees whom the striking union did not represent or desire to represent.
Explaining this Court will deny enforcement when orders are "`fundamentally inconsistent with the structure of the act,' or `attempt to usurp major policy decisions properly made by Congress'"