The union HAS warned all their shop stewards not to take part in unofficial strikes .

工联已警告他们所有的 店员不要参加非官方 组织的罢工。

His father worked in the shipyards ; both his parents were trade union shop stewards .

他的父亲在船厂工作，并且与弗格森的母亲一样都是 工会代表。

The union is asking the management to agree to a closed shop .

工会正要求资方同意闭锁 工厂制度。