In our area, I see grandparents that live in the same household, could be a cultural thing, and they are the ones who watch the children while the parents are at work, or off doing their own thing. We never asked our parents to watch our kids on a regular basis or even overnight, ever, mainly because of their age at the time, it wouldn’t be fair to them. I don’t believe anyone has to pay grandparents an hourly amount, but a lump sum amount to compensate them for their time and out of pocket expenses is not unreasonable.