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 NLRB v. Textile Workers, supra, and Machinists v. NLRB, 412 U.S. 84 (1973) (per curiam), the Court found as a corollary that unions may not fine former members who have resigned lawfully.