This is apparent from the effect of early marriage (and children) on women's educational attainments, career longevity, etc. A woman can start a career 18 years after her first child in marriage, but by age, say, 38, she rarely will have the same earning potential, even with equivalent preparation, as a 18 year old starting out. Part age discrimination and part gender discrimination, but nevertheless real.
The very few women who never have children but are married may have some more success, but may also be questioned throughout childbearing fertility as to their true intentions.
As a 50 year old empty nester, a woman is now expected to work another 18 years yet will have a great deal of difficulty not just finding a job, but finding an upwardly mobile job from where she starts as a "recovered parent" but an inactive employee.
