| 1. | a shop, business establishment, or part thereof, in which terms and conditions of employment for all employees are fixed by agreement between the employer and a labor union. |
| 2. | a shop, business, etc., in which membership in a union is made a condition of employment, but in which the employer may hire nonunion workers provided that they become members after a stated period, usually 30 days. |
| union shop n. A business or industrial establishment whose employees are required to be union members or to agree to join the union within a specified time after being hired. Also called closed shop. |
A business or industry in which all new workers must join a labor union after a specified period of time. (See closed shop and right-to-work laws.)
