— Also termed Garmon doctrine. See COLLECTIVE BARGAINING; UNFAIR LABOR PRACTICE. [Cases: Labor Relations 45. C.J.S. Labor Relations § 23.]
Machinists preemption. Labor law. The doctrine prohibiting state regulation of an area of labor activity or management–union relations that Congress has intentionally left unregulated. Lodge 76, Int’l Ass’n of Machinists v. Wisconsin Employment Relations Comm’n, 427 U.S. 132, 96 S.Ct. 2548 (1976). [Cases: Labor Relations 45. C.J.S. Labor Relations § 23.]
obstacle preemption. The principle that federal or state law can supersede or supplant state or local law that stands as an obstacle to accomplishing the full purposes and objectives of the overriding federal or state law.
— Also termed conflict preemption.