440 U.S. 147 (1979) Cited 3,635 times 3 Legal Analyses
Holding that "once an issue is actually and necessarily determined by a court of competent jurisdiction, that determination is conclusive in subsequent suits based on a different cause of action involving a party to the prior litigation"
369 U.S. 736 (1962) Cited 710 times 29 Legal Analyses
Holding that "an employer's unilateral change in conditions of employment under negotiation" is a violation of the National Labor Relations Act because "it is a circumvention of the duty to negotiate"
441 U.S. 488 (1979) Cited 288 times 1 Legal Analyses
Holding that proposal concerning in-plant cafeteria prices was within duty to bargain despite fact that prices were set by third-party supplier rather than employer