Deuteronomy 24
14 Ref Thou shalt not oppress a hired servant that is poor and needy, whether he be of thy brethren, or of thy sojourners that are in thy land within thy gates:
15 Ref in his day thou shalt give him his hire, neither shall the sun go down upon it; for he is poor, and setteth his heart upon it: lest he cry against thee unto Jehovah, and it be sin unto thee.