It is precisely for this reason that commercial contracts are so rare in South Africa and elsewhere. The U.S. government does not authorize the union shop in any federal authority, whether state law permits it or not. Among these three types of unionization agreements, the agency`s enterprise agreement allows for the greatest possible flexibility. Workers may choose not to remain members of the indicated union as long as they pay the necessary taxes to the union. In short, a store contract is a collective agreement in which a majority union and an employer agree that it is a condition of employment that all workers must be members of the majority union. Also known as pre-open store contracts, store contracts are entered into to protect union workers. Under this type of agreement, a particular company may require all of its employees to be part of a particular union or union. The famous English damages case Rookes v Barnard concerned a store agreement.  For example, a closed store can only be entered into with a majority union. In addition, workers who are not members of the union at the signing of the contract must not become unionized, although all new workers are required to join the union to secure employment with the employer. The alliances of the International Labour Organization do not care about the legality of closed store rules and leave the issue to each nation.
 The legal status of commercial contracts concluded varies considerably from country to country, from prohibitions of the agreement to comprehensive regulation of the agreement to an unmentioned agreement. All forms of closed trade in the UK are illegal after the introduction of the Employment Act in 1990. They were further reduced under Section 137 (1) (a) of the Trade Union and Labour Relations (Consolidation) Act 1992 (approximately 52) , which was passed at the time by the Conservative government. The then-opposition Labour Party had supported closed operations until December 1989, when it abandoned the policy in accordance with EU law.  Equity was one of the last unions in the United Kingdom to support a closed store before entry until the 1990 Act.  The Taft-Hartley Act also prohibits unions from imposing excessively high initiation fees as a precondition for membership, in order to prevent unions from using introductory fees as a means of removing non-union workers from a particular sector.