<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2009) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2009) (Learn how and when to remove this template message) </Td> </Tr> <P> A pre-entry closed shop (or simply closed shop) is a form of union security agreement under which the employer agrees to hire union members only, and employees must remain members of the union at all times in order to remain employed . This is different from a post-entry closed shop (US: union shop), which is an agreement requiring all employees to join the union if they are not already members . In a union shop, the union must accept as a member any person hired by the employer . </P> <P> International Labour Organization covenants do not address the legality of closed shop provisions, leaving the question up to each individual nation . The legal status of closed shop agreements varies widely from country to country, ranging from bans on the agreement, to extensive regulation of the agreement to not mentioning it at all . </P>

The closed shop form of union security means that the
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