Late last year, Willie Nelson put out a record Remember Me Vol. 1 where he covered some great old songs. Among them is Sixteen Tons, a coal miner's song. The song touches on an historical labor and employment issue: the truck system and debt bondage. It also features a word, "straw boss" that you still hear from time to time in labor and employment cases. It's often a critical issue of whether the somebody is a boss or a straw boss (although it's not an issue in the song). The song has been covered by many, but I think Willie's version is the best.