Labor-Management Relations Act (Taft-Hartley Act) of 1947 is a federal law that permits the president of the United States to seek an 80-day injunction to delay a strike or lockout if evidence suggests that the strike would” imperil the national health and safety” declares the following union activities to be unfair labor practices: (1) closed shops and secondary boycotts, (2) featherbedding and (3) refusal to bargain in good faith: empowers states to pass “right to –work” laws.