Most of us have had to endure a corrosive fellow member of staff on one or more occasion during our working lives.

在工作中，大多数人不得不在很多场合忍受“有毒员工”。

He or she may in fact be good at their job, but their bad behaviour - everything from selfishness, bullying, rudeness, being overly-domineering, or even just being constantly too loud and opinionated - and can have a devastating impact on staff morale.

他/她或许很能干，但是他们的不良行为，比如自私、欺凌、粗鲁、过分跋扈，甚至只是不断地大声嚷嚷和固执己见，对员工士气可能产生毁灭性的影响。

In academic circles, such a problem employee is now more often described as "toxic".

在学术界，这样的“问题员工”现在经常被描述为“有毒”。

One 2015 report by Harvard Business School estimated that keeping a toxic worker on the payroll can cost an average firm more than $12,000 a year.

哈佛商学院在2015年发布的一项报告估计，雇佣一名“有毒”的员工，普通公司一年要多投入1.2万美元。

A separate study said that the annual financial impact of a toxic employee could be even more onerous.

另一项研究表明，“有毒员工”对公司的年度财务影响甚至还要更糟糕。