I think I haven't seen any research that shows a wage gap.
If hiring women saved a company 20%, wouldn't we be seeing companies all over with almost all women?
Yet, men have a higher employment rate than women.
www.bls.gov
Do you not see this as a function of our society? Where men are traditionally the bread winners while women nurture the children?
Also, you seem to leave out a lot of other variables. Your own link gives lots of information to show why more men are employed,
From your link:
In 2021, women who worked full time in wage and salary jobs had median usual weekly earnings of $912, which represented 83.1 percent of men’s median weekly earnings ($1,097). Among women, earnings were higher for Asians ($1,141) than for Whites ($925), Blacks ($776), and Hispanics ($718). Women-to-men’s earnings ratios were higher for Blacks (94.1 percent) than for Hispanics (87.6 percent), Whites (82.2 percent), and Asians (78.5 percent). (See table 16; note that the comparisons of earnings in this report are on a broad level and do not control for many factors, like occupation, that may be important in explaining earnings differences.)
Women’s median usual weekly earnings vary by educational attainment. In 2021, among female full-time wage and salary workers age 25 and older, those with less than a high school diploma had median weekly earnings of $550. Women whose highest degree was a high school diploma had earnings of $698, those with an associate’s degree had earnings of $836, and those with a bachelor’s degree and higher had earnings of $1,272. (See table 17.)
By occupation, median usual weekly earnings of female full-time wage and salary workers in 2021 were the highest for other physicians ($2,283), pharmacists ($2,087), lawyers ($1,912), computer and information systems managers ($1,908), chief executives ($1,904), and nurse practitioners ($1,903). Earnings for men were highest for chief executives ($2,721), other physicians ($2,647), and lawyers ($2,495). (See table 18.)
In 2021, 1.8 percent of women who were paid hourly rates had earnings at or below the prevailing federal minimum wage ($7.25 per hour). Among women ages 16 to 24 who were paid an hourly rate, 4.3 percent had earnings at or below the minimum wage, compared with 1.2 percent of women age 25 and over. (See table 20.)