"Women, more than men, downscale their careers or step away from professional life altogether while their children are young. This “opting out” phenomenon, observed worldwide, comes despite the fact that some countries have stepped up their support for working parents. Opting out occurs mostly in families where one partner earns enough that the mother can afford not to work, and, on the other end of the spectrum, those whose jobs don’t pay enough to cover the cost of childcare." (Quoted from article)