[econjack]

Sadly, child-rearing plays a major role in the male/female wage differential. Employers often consider the age and marital status of a female during the hiring process. Way back in my grad school days (1960's), it was estimated that a new hire cost up to $25,000 to train to the point where they had a positive contribution to marginal revenue. Ceteris paribus, it was less expensive to hire a male.

[bankwalker]

why do you say ‘sadly’? Facts are not ‘sad’.