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"
In NLRB v. News Syndicate Co., 365 U.S. 695, 81 S.Ct. 849, 6 L.Ed.2d 29 (1961), where the bargaining unit included supervisors, the NLRB had found that both the employer and the union had committed unfair labor practices by operating an unlawful closed shop and preferential hiring system.
Finding that it would be "destructive of stable bargaining relationships to permit an employer, after voluntarily agreeing to bargain with a particular unit, to repudiate [the applicability of the CBA] on the grounds that the unit was not appropriate"