A Sign of the Future: Female Majority in Government SES?

I think this is a portent of the future:

"The Health and Human Services Department is the only major Cabinet-level agency that boasts more female than male senior executives, according to the latest numbers from the Office of Personnel Management.
Of the 420 total senior executives at HHS as of September 2014, women made up 53 percent of the corps, compared to 47 percent who were men. That’s 223 senior executive women compared to 197 senior executive men, based on OPM’s Fedscope data compiled by CEB, a member-based advisory company. The bulk of the Senior Executive Service’s members are career employees – a whopping 90 percent.

Women have shown they'll work for less than men, on average, and members of the Senior Executive Service earn less than people in private, for-profit enterprise.  The "service" ethos, such as it is, of non-profit organizations and the government is also likely to appeal more strongly to women than men.  Thus I'd predict HHS is the first (article doesn't say that but I imagine it's true) but not the last department to see women become dominant at higher levels.