(CNN) - According to a new study, men who weren't as agreeable earned about 18 percent more - or about $9,700 more per year - than nice guys.
When it comes to women, those who are ruder earn about 5 percent - or nearly $1,800 more a year - than their kinder counterparts.
The study of nearly 10,000 workers being presented at the annual Academy of Management meeting also discovered men who were described as "highly agreeable" were less likely to get a position.
But previous research indicates meanness doesn't necessarily benefit companies.
Uncivil conditions often mean higher employee turnover and are bad for organizations as a whole.
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