open shop: Meaning and Definition of

o'pen shop'

Pronunciation: [key]
  1. a factory, office, or other business establishment in which a union, chosen by a majority of the employees, acts as representative of all the employees in making agreements with the employer, but in which union membership is not a condition of employment.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.