Masters: Duty of, Toward Servants: Not to Keep Back Their Wages
Source: TTT
Leviticus 19:13
You must not defraud your neighbor or rob him. You must not withhold until morning the wages due a hired hand.
Deuteronomy 24:15
You are to pay his wages each day before sunset, because he is poor and depends on them. Otherwise he may cry out to the LORD against you, and you will be guilty of sin.