Wiktionary
n. A place of employment in which employment is in no way conditioned on membership in a union, though a union may be the exclusive bargaining agent of the employees.
WordNet
n. a company whose workers are hired without regard to their membership in a labor union
Wikipedia
An open shop is a place of employment at which one is not required to join or financially support a union ( closed shop) as a condition of hiring or continued employment. Open shop is also known as a merit shop.
Usage examples of "open shop".
There had come a swirl of hot wind from the open shop-door and it carried with it what I thought at first was the echo of Charles's cry.
He went into the open shop and sat at one of the plastic tables, bulky in his raincoat.
Turnish led the way past open shop doors in which no one appeared .
Turnish led the way past open shop doors in which no one appeared .
It seemed fitting that a spanking-new bank should open shop with a great deal of cold cash.
Penalty of death against the dealer who does not post up the contents of his warehouse, or who does not keep open shop.
If they passed an open shop the merchant would block their way and importune them in urgent simple French or English, plucking at Scott's sleeve as they passed.
From one open shop came the sound of blows and vituperation, and just as the officer came up to it a man in a gray coat with a shaven head was flung out violently.
At length a strong-faced, middle-aged man came out into the open shop, knelt and bowed.
He trotted off to the open shop of a kunjri, a low-caste vegetable-seller, which lay opposite the belt-tramway line down the Motee Bazar.