Sabbath (Deuteronomy 5:12-15)
Many are more familiar with the sabbath rationale given in the Exodus 20 version of the ten commandments and the famous seven day creation story in Genesis 1. But Deuteronomy gives a different reason for observing the sabbath: because the Israelites knew what it was like to be exploited laborers. Notice that sabbath is to be observed by the whole household, including slaves and animals.
Pay Up! (Leviticus 19:13 and Deuteronomy 24:14-15)
". . . you shall not keep for yourself the wages of a laborer until morning."