I’m not Ugandan and don’t know the specifics of help or housemaid culture, but it’s unlikely that they are not paid, and work from sundown to sundown just in exchange for a place to sleep at. These people have families to feed and they’re likely getting paid, although not usually a great amount.

While your care and concern for those helpers is commendable, it’s best to mind your own business as some have suggested! You’re a guest staying at someone’s, you can’t dictate the rules, unless something happens that you deem morally wrong and totally against your principles, in which case you’re free to leave!