Agreeableness in general is negatively correlated with career success. Have you noticed that Fortune 500 CEOs tend to be extremely disagreeable, to the point of psychopathy in some cases. At the risk of sticking my neck out, it's also one of the many reasons for the gender pay gap, woman are more agreeable than men. And you have to be somewhat disagreeable to stand up for yourself and demand a raise (or quit and seek…
What I have read is that in the US, women who are childless and without a man earn 98 percent of what men with comparable education and experience make. My stats are probably out of date, so 95 cents on the dollar may be more accurate.
Just suggesting it probably isn't terribly far off, from what I gather, having read up on such a fair amount over the years due to my gender.