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.
A factory, business, etc. operating under a contract between the employer and a labor union, which permits the hiring of nonunion workers but requires that all new employees join the union within a specified period.
N. A place of employment that hires only unionized workers.
A place of employment in which newly hired workers must join the union representing the workers within a certain period of time, typically 30 days.