If a young female lawyer or banker on a promising career track decides to leave the office “early” every day to be home with her kids for dinner, work part-time, or take time out to be a full-time caregiver, she is quickly knocked out of the competition for top jobs. And if she decides to devote herself to full-time caregiving, that time becomes a black mark on her résumé, a hole that she must vainly try to hide or explain away if and when she tries to re-enter the job market.