[T2_t2]

No, there isn't. The gap is between different professions, not intra-professional. Where it is intra-professional, men tend to work more hours, and women tend to preference conditions over monetary remuneration (i.e. flexibility over pay, extraneous benefits over direct compensation etc etc). Just to be clear, extra time off is remuneration, as are things like on-site day care centres, but they aren't ever counted in pay gap studies (that I have seen anyway).

Add to that that Lesbians make more than straight women[1] - and gay men less than straight men [2][3] - and there is a bit more at play.

The problem is that any time there is something men do better than women - like negotiate pay - rather than bring women up to the male standard (teach women to negotiate better), people want to hamstring men (no pay negotiation). Anti-worker policies and pro-gender policies are often indistinguishable, if only to me personally, and in my more cynical moments think this is a business conspiracy to deflate wages to female levels, not increase wages to male levels.

[1] http://bigthink.com/dollars-and-sex/what-explains-the-lesbia...

[2] http://onlinelibrary.wiley.com/doi/10.1111/j.1468-232X.2009....

[3] https://joeclark.org/gaymoney/findings/

[yomly]

It's possible to pay everyone equally - especially when you just pay everyone less.

If you disclose what everyone earns at every level, it's easy to then let all your employees pull everyone hold themselves accountable to the same level.

A bit like crabs in a bucket...