In trying to encourage good moral conduct, it's common for a company to come up with a list of don'ts—wording policies such that they focus on unethical behavior employees should avoid rather than on ethical acts they should strive to achieve. Don't cheat. Don't lie. It's a tendency that dates back to the Ten Commandments, the vast majority (eight) of which dictate what thou shalt not do.
[This article was provided with permission from Harvard Business School Working Knowledge.]