Deuteronomy 24:14–15

14 “You shall not oppress a hired servant who is poor and needy, whether he is one of your brethren or one of the sojourners who are in your land within your towns; 15 you shall give him his hire on the day he earns it, before the sun goes down (for he is poor, and sets his heart upon it); lest he cry against you to the Lord, and it be sin in you.