Job 31:13

If I have despised the cause of my man-servant or of my maid-servant, When they contended with me;

Exodus 21:20-21

And if a man smite his servant, or his maid, with a rod, and he die under his hand; he shall surely be punished.

Exodus 21:26-27

And if a man smite the eye of his servant, or the eye of his maid, and destroy it; he shall let him go free for his eye's sake.

Leviticus 25:43

Thou shalt not rule over him with rigor, but shalt fear thy God.

Leviticus 25:46

And ye shall make them an inheritance for your children after you, to hold for a possession; of them shall ye take your bondmen for ever: but over your brethren the children of Israel ye shall not rule, one over another, with rigor.

Deuteronomy 15:12-15

If thy brother, a Hebrew man, or a Hebrew woman, be sold unto thee, and serve thee six years; then in the seventh year thou shalt let him go free from thee.

Deuteronomy 24:14-15

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:

Jeremiah 34:14-17

At the end of seven years ye shall let go every man his brother that is a Hebrew, that hath been sold unto thee, and hath served thee six years, thou shalt let him go free from thee: but your fathers hearkened not unto me, neither inclined their ear.

Ephesians 6:9

And, ye masters, do the same things unto them, and forbear threatening: knowing that he who is both their Master and yours is in heaven, and there is no respect of persons with him.

Colossians 4:1

Masters, render unto your servants that which is just and equal; knowing that ye also have a Master in heaven.

Treasury of Scripture Knowledge

Summary

If I did despise the cause of my manservant or of my maidservant, when they contended with me;

Bible References

The cause

Exodus 21:20
And if a man smite his servant, or his maid, with a rod, and he die under his hand; he shall surely be punished.
Leviticus 25:43
Thou shalt not rule over him with rigor, but shalt fear thy God.
Deuteronomy 15:12
If thy brother, a Hebrew man, or a Hebrew woman, be sold unto thee, and serve thee six years; then in the seventh year thou shalt let him go free from thee.
Jeremiah 34:14
At the end of seven years ye shall let go every man his brother that is a Hebrew, that hath been sold unto thee, and hath served thee six years, thou shalt let him go free from thee: but your fathers hearkened not unto me, neither inclined their ear.
Ephesians 6:9
And, ye masters, do the same things unto them, and forbear threatening: knowing that he who is both their Master and yours is in heaven, and there is no respect of persons with him.
Colossians 4:1
Masters, render unto your servants that which is just and equal; knowing that ye also have a Master in heaven.

General references

Exodus 21:26
And if a man smite the eye of his servant, or the eye of his maid, and destroy it; he shall let him go free for his eye's sake.
Exodus 23:6
Thou shalt not wrest the justice due to thy poor in his cause.
Deuteronomy 24:14
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:

American Standard Version Public Domain