Answer :
The Taft-Hartley Act was an American law of 1947 that ruled relations between labor unions and employers. The law restricted the prerogatives of the unions and limited the right to strike of the employees in the companies of the country by several provisions:
-Spontaneous walkouts were made illegal, a 60-day strike notice was imposed when the goal was a new collective agreement. No notice was required when an agreement came to an end.
-The right to strike of federal officials, state officials and local government officials was withdrawn.
-The closed shop was forbidden: employees did not have to belong to the union to be hired. The union shop remained allowed: the workers may have to unionize after their hiring. However, states could prohibit contracts between companies and unions whose purpose was to dismiss workers who refused to join a union.
-It gave the right to the federal government to ban / stop a strike that endangered national security.
-Trade union leaders were obliged to swear an oath of non-communism. This provision was declared unconstitutional in 1965.