[, ] () a signed agreement made between two groups of people, especially an agreement made by a union and an employer about the pay and working conditions of the union members; the process of making the agreement 集体协议（工会与资方就会员的工资报酬、工作条件等达成的协议）◆Working hours and rest periods should only be changed by collective agreement. 工作时间和休息时间只应通过集体协议修改。