https://www.theregister.co.uk/2019/11/06/microsoft_pay_gap_ninth_circuit/

Analysis More than 8,000 female Microsoft employees have appealed a decision not to grant them a collective legal right to sue the software giant for pay discrimination, claiming that top management knew it was a problem but failed to fix it.

According to expert testimony put forward by the women, and unchallenged by Microsoft, there is a six per cent pay gap between men and women at the mega-corp. A lawsuit, brought by infosec specialist Katherine Moussouris back in 2015 in the US, has been trying to identify the root of that bias and eradicate it.