Deuteronomy 24:14-15

14“You are not to oppress a hired servant who is poor and needy, whether he is from your brothers or the outsiders in your land within your town gates.

15On that day you are to give him his wages—the sun is not to set on it—for he is poor and sets his heart on it. Otherwise he will cry out against you to Adonai, and you will have sin on you.