Peter Principle

The Peter Principle is an observation that the tendency in most organizational hierarchies, such as that of a corporation, is for every employee to rise in the hierarchy through promotion until they reach a level of respective incompetence. In other words, a front-office secretary who is quite good at her job may thus be promoted to executive assistant to the CEO for which she is not trained or prepared for—meaning that she would be more productive for the company (and likely herself) if she had not been promoted.