An investment banker’s son has asked his dad what "business ethics" means. "Well, son,” the investment banker says, “let me give you an example.  A small business we helped to get started with a loan has paid us back.  In fact, he accidentally made two more payments than were required.  Now here's where the business ethics come in:  Do I share that money with my partners?"

—From Workplace Jokes: Only SOME of Them Will Get You Fired!