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.
KJV
At 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 the LORD, and it be sin unto thee.
ASV
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.