In the line at the bank window, nice guys really do finish last.  Researchers from Notre Dame, Cornell and the University of Western Ontario have found that those who are nice at work -- that is, in the sense of being agreeable -- make less money than people who are mean.

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The sounds about 100% unfair but quit whining and start wreaking havoc on your co-workers. While there are definite advantages to being nice to others at work, including the fact that you will be better liked by your co-workers, the bottom line is that "agreeableness is negatively related to income and earnings," conclude the authors.

But ladies, word to the wise from us nice guys…being taxing to others at work won’t move you into another tax bracket.    Men who are nice at work in defiance of gender stereotypes take a hit financially, while women who are mean don't reap the same benefits in their paychecks as do mean men.