company store

Short definition from Wiktionary

Noun

1. 1
   A retailer of provisions and general merchandise, owned by a firm which operates a mine or other industry nearby, and at which the firm's employees are required to shop, to pay high prices, and to make payments through payroll deductions or a truck system, typically resulting in the accumulation of considerable employee indebtedness.
2. 2
   Alternative form of company store.