I can't pretend to be an expert in the economics of family leave, but my cursory Google search turned up articles claiming that maternity leave helps the economy, as well as articles saying the exact opposite. I don't know if one or the other has more veracity. However, this is kind of my point about better and worse. Even in the case where parental leave might cause short term negatives effects in the economy, I would still argue it's a good thing for two reasons. 1) I believe that it's just the good ole' plain moral thing to do (not a great argument, for sure). And 2) I think that there is plenty of evidence that the way a child is treated in its earliest years can affect its ability to succeed in the world much later in life (just yesterday, for example, it was all over the news that we should be reading aloud to newborns). Therefore, I find it highly probable that the net effects to the economy will be positive in the very long term, so long as we assume that smarter children will grow up to be more creative and productive adults (certainly a leap of faith). But, in the end I suppose that point 2 is just rationalizing for point 1.
On the contrary, I think this is the very strongest argument you could make. What other reason is there to act, except that it is right? Of course, this argument will not work for people who do not agree with us that Making life easier for struggling new parents is good. I think such misanthropes are rare and I am willing to ignore them. If your position were "We should make life easier for struggling new parents because it is good" I would march alongside you. Instead, I read your position as "We should divert resources, taken from others (including struggling new parents), to give new authority to the body which terrorizes struggling new parents with terrifying goons, to force businesses to alter the voluntary agreements they make with working people, including struggling new parents, such that some workers will benefit and some will be harmed (perhaps by discrimination, perhaps by fewer job opportunities), and we will write a charter for this authority with the words Purpose: To make life easier for struggling new parents because this will make life easier for struggling new parents." That is a much different position and not one I am sure I can get behind.it's just the good ole' plain moral thing to do (not a great argument, for sure)