Man that is born of a woman is of few days, and full of trouble.
(Job 14:1)

Turn from him, that he may rest, till he shall accomplish, as an hireling, his day.
(Job 14:6)

He that oppresseth the poor to increase his riches, and he that giveth to the rich, shall surely come to want.
(Proverbs 22:16)

He that delicately bringeth up his servant from a child shall have him become his son at the length.
(Proverbs 29:21)

And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the stranger from his right, and fear not me, saith the LORD of hosts.
(Malachi 3:5)

Servants, be obedient to them that are your masters according to the flesh, with fear and trembling, in singleness of your heart, as unto Christ; Not with eyeservice, as menpleasers; but as the servants of Christ, doing the will of God from the heart; With good will doing service, as to the Lord, and not to men: Knowing that whatsoever good thing any man doeth, the same shall he receive of the Lord, whether he be bond or free. And, ye masters, do the same things unto them, forbearing threatening: knowing that your Master also is in heaven; neither is there respect of persons with him.
(Ephesians 6:5-9)

Masters, give unto your servants that which is just and equal; knowing that ye also have a Master in heaven.
(Colossians 4:1)

For the scripture saith, Thou shalt not muzzle the ox that treadeth out the corn. And, The labourer is worthy of his reward.
(1 Timothy 5:18)

Behold, the hire of the labourers who have reaped down your fields, which is of you kept back by fraud, crieth: and the cries of them which have reaped are entered into the ears of the Lord of sabaoth. 
(James 5:4)