373 U.S. 221 (1963) Cited 358 times 1 Legal Analyses
Upholding Board decision prohibiting employer from granting super-seniority to strike-breakers because "[s]uper-seniority renders future bargaining difficult, if not impossible"
437 U.S. 556 (1978) Cited 196 times 13 Legal Analyses
Holding that a newsletter that "urg[ed] employees to write their legislators to oppose incorporation of the state 'right-to-work' statute into a revised state constitution," "criticiz[ed] a Presidential veto of an increase in the federal minimum wage and urg[ed] employees to register to vote" was protected concerted activity
Stating that section 8(b) prohibits labor unions from engaging in "secondary boycotting" by "exert[ing] pressure on an employer not involved in the relevant labor dispute ('the secondary employer') in order to obtain a favorable result in the ongoing labor dispute with another employer ('the primary employer')"