To gain a promotion, you might have to work overtime.

为了得到晋升，你可能得加班。

He would work overtime, without pay, to finish a job.

他会无偿地加班把一件工作完成。

Does she often work overtime?

她经常加班吗？

Does he often work overtime?

他经常加班吗？

Do you often work overtime?

你经常加班吗？