This article takes a novel approach to explaining the causes of unethical behavior in organizations. Instead of explaining the unethical behavior of employees in terms of their bad organization, this article examines how a good organization can lead to employees’ unethical behavior. The main idea is that the more ethical an organization becomes, the higher, in some respects, is the likelihood of unethical behavior. This is due to four threatening forces that become stronger when an organization becomes more ethical. These (...) forces are the upward, downward, backward, and forward forces. Each of these forces is illustrated with two effects and each effect is explained by a specific theory. The effects are the effects of the gold digger, high-jump bar, retreating-cat, forbidden-fruit, cheese slicer, moving-spotlight, repeat-prescription, and keeping-up appearances. This paradox of ethics, when goodness breeds badness, opens new research directions. (shrink)