The union strategy made illegal through the Taft-Hartley Act of 1948 was: (1) Jurisdictional strikes centered on which the unions would symbolize a firm’s staff. (2) Contracts in which the firms agreed to preferentially encourage the union members. (3) ‘Right-to-work’ clauses in the collective bargaining contracts. (4) ‘Blacklisting’ that forbade the union members to work for ‘union-busting’ employers.
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