Unions regard the government's intention to ban overtime as the thin end of the wedge.
工会认为政府禁止加班的用意是老鼠拉木 ,大头在後边。
As an earnest of my good intentions I will work overtime this week.
我愿本周加班工作以示诚意.
We're in dispute (with the management) about overtime rates.
我们正(与资方)交涉加班费问题.