376 U.S. 254 (1964) Cited 7,006 times 36 Legal Analyses
Holding that a public official or public figure can recover damages for defamation on a matter of public concern only if he proves that the speaker acted with actual malice
420 U.S. 251 (1975) Cited 434 times 64 Legal Analyses
Holding that an employer commits an unfair labor practice by compelling an employee to attend an investigatory meeting that could lead to discipline without allowing the employee to bring a union witness
465 U.S. 822 (1984) Cited 206 times 9 Legal Analyses
Holding that a "lone employee's invocation of a right grounded in his collective-bargaining agreement is . . . a concerted activity in a very real sense" because the employee is in effect reminding his employer of the power of the group that brought about the agreement and that could be reharnessed if the employer refuses to respect the employee's objection
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