Amalgamated Ass'n of Street, Electric Railway & Motor Coach Employees of America v. Lockridge

San Diego Building Trades Council v. Garmon, 359 U. S. 236 (1959), established the general principle that the National Labor Relations Act pre-empts state and federal court jurisdiction to remedy conduct that is arguably protected or prohibited by the Act. That decision represents the watershed in this Court’s continuing effort to mark the extent to which the maintenance of a general federal law of labor relations combined with a centralized administrative agency to implement its provisions necessarily supplants the operation of the more traditional legal processes in this field. We granted…