Which act restricted union activities and allowed states to pass "right-to-work" laws?

The Taft-Hartley Act is significant because it was enacted in 1947 to balance the power between unions and employers. One of the key provisions of the act is that it restricts certain activities of labor unions. It aimed to reduce union power by prohibiting secondary boycotts, jurisdictional strikes, and closed shops, among other things. Additionally, the act allows states to implement "right-to-work" laws, which prohibit union security agreements and ensure that individuals cannot be compelled to join a union as a condition of employment. This law thus provides individuals with the liberty to decide whether to join or financially support a union, fundamentally impacting the operation and power dynamics of labor unions across states.