idiom, particle · the state of being tired or exhausted from exertion

他为了养家长期超负荷工作，终因积劳成疾而病倒了。

idiom, verb, noun · to toil or perform physical or mental work

我们应该明白，这种不劳而获的想法是非常错误的。

noun · a meritorious deed or achievement earned through effort

他的功劳很大。

verb · to express appreciation or reward someone for their services or hard work

经理亲自去慰劳前线的员工。

verb · to put someone to the trouble of doing something as a polite request

劳您费心了。

noun · a person who performs work, especially manual labor

劳方与资方在会议上就薪资待遇达成了一致意见。