Boyd’s Bible Dictionary:
(pledges). The earliest O. T. mention of wages shows that they were paid in kind and not in money (Gen. 29:15,20; 30:28; 31:7-8,41). Wages paid in money are mentioned in N. T. (Matt. 20:2). The Mosaic law was very strict in requiring daily payment of wages (Lev. 19:13; Deut. 24:14-15).