He's overworking and has got a lot on his mind.
他工作太累，而且非常操心。
柯林斯例句
You look tired. Have you been overworking?
你似乎很疲倦，是不是近来劳累过度了？
《牛津高阶英汉双解词典》
Overworking can jeopardize your health.
工作过量可能会危及你的健康。
辞典例句
His health was the forfeit he paid for overworking.
他因工作过度而丧失了健康.
辞典例句
I think he's been overworking.
我想他是劳累过度了.
轻松英语会话---联想3000词(下)
The rough overworking herself Mary fell ill and was taken to hospital.
由于工作过于劳累,玛丽累病了,被送进了医院.
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Paul is burnt out from years of overworking and stress.
保罗因长年的过度辛劳和压力而累垮了.
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My boy is not looking well. Has he been overworking?
我儿子看起来有些不舒服. 他是否工作过度了?
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I've obviously been overworking myself.
我显然是劳累过度了.
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Have you been overworking them?
您是否用眼过度了?
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You look as though you've been overworking.
你好像工作过度.
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He made himself sick by overworking himself.
他因工作过度而得病.
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Overworking induces a lot of illness.
过度劳累会引起许多疾病.
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And sometimes ignorant or shortsightedemployers might even reduce their own profits by overworking theiremployees.
甚至有的雇主无知短视,不顾一切让员工操劳过度反而减少利润.
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The sixth rule is to understand the overworking is a kind of art.
第六条必须明白加班是一种艺术.
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Amy Blankson describes how to strategically stop during the day by using technology to control overworking.
2018年12月六级真题（第三套）阅读 Section BThese factors have converged to create an increasingly impossible situation with many employees overworking to the point of burnout.
2016年12月六级真题（第一套）阅读 Section BThus the more imbalanced we become due to overworking, the more value there is in activities that allow us to return to a state of balance.
2018年12月六级真题（第一套）阅读 Section B"he became ill from overwork"