This is really not a big problem. Most places can hire a substitute for that time. And everything is planed months ahead (pregnancy is 9 months). Also, by your

This is really not a big problem. Most places can hire a substitute for that time. And everything is planed months ahead (pregnancy is 9 months). Also, by your argument it is not viable to hire women of fertile age. Which, in Sweden at least, is really out of touch with reality.