/klōzd-shäp ˈkänˌtrakt/ – Phrase
Definition: một loại hợp đồng lao động mà yêu cầu nhân viên phải là thành viên của một công đoàn cụ thể để được tuyển dụng hoặc giữ việc làm.
A more thorough explanation: an agreement between an employer and a trade union (=an organization formed by workers to negotiate with the employer about wages and working conditions) where the employer has to hire members of the trade union and the employees have to belong to that trade union
Example: Ford was the first company to approve a closed-shop contract – barring non-union workers from working at its plants.