Republicans believe corporations should be able to establish their own employment practices, including benefits and wages, with the free market deciding the price of work. Since the 1920s, Republicans have generally been opposed by labor union organizations and members. At the national level, Republicans supported the Taft-Hartley Act of 1947, which gives workers the right not to participate in unions. Modern Republicans at the state level generally support various right-to-work laws, which prohibit union security agreements requiring all workers in a unionized workplace to pay dues or a fair-share fee, regardless of if they are members of the union or not.