The cited statistic "Women make up 57% of the workforce" is very misleading. Chasing down the chain of citations, this number appears to be the percentage of "Professional and related occupations" jobs occupied by women according to the BLS (https://www.bls.gov/cps/cpsaat09.htm). But by far the largest sub-category of this is "Healthcare practitioners and technical occupations" which is heavily female--outside of this sub-group the gender ratio is roughly 50/50.