Recently, there has been much written about professional ethics in health care, but the literature has tended to focus on the ethical care and treatment of patients and protection of their privacy and confidential information. This article focuses on the ethical behavior of health care professionals and how they treat each other in the workplace. Examples of unethical behavior are described ranging from subtle favoritism by managers and bullying to crossing the legal line. Two specific cases demonstrate serious situations where it was necessary for colleagues to "blow the whistle" even at the risk of their own careers.