It is, but with consequences that women are apparently just starting to understand. Private employers can save themselves a lot of trouble in this regard by hiring as few women as possible.
I belong to a business networking group in my area, and at our last meeting we had a remarkable presentation from someone who works in a growing industry of temporary staffing companies that are now providing large numbers of highly specialized workers to large companies. One Fortune 500 company headquartered in my area now staffs more than 50% of their highly-paid positions in medicine, R&D and biotechnology through outside staffing vendors.
The woman giving the presentation explained it very simply:
"Between the Affordable Care Act, the #MeToo movement, and all the other HR headaches they've been dealing with, these companies just don't want to deal with employees anymore."
When a contract employee outperforms the hired help, he probably wouldn’t make many friends at the client company he’s been assigned to. In fact, he might even get “Kavenaughed” in retaliation for doing the best job he can do for the “team” and for himself.