Remember: beat your slaves, just don't kill them.

"Anyone who beats their male or female slave with a rod must be punished if the slave dies as a direct result, but they are not to be punished if the slave recovers after a day or two, since the slave is their property. Exodus 21:20

Don't you just hate those pain-in-the-ass slaves that complain when you beat them? It's like they don't even know that God said it's OK.