a retail store operated by a company for the convenience of the employees, who are required to buy from the store.
Origin of company store
An Americanism dating back to 1870–75
Also called industrial store.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for company store
So after supper he had to seek out his boss, and arrange to get credit at the company-store.King Coal|Upton Sinclair