The Taft–Hartley Act also prohibits unions from requiring unreasonably-high initiation fees as a condition of membership to prevent unions from using initiation fees as a device to keep non-union employees out of a particular industry. Also, the National Labor Relations Act permits construction employers to enter pre-hire agreements in which they agree to draw their workforces from a pool of employees dispatched by the union. The NLRA prohibits pre-hire agreements outside the construction industry.[11]