The idea that a manager tends to be promoted to the level of his incompetence is referred to as

The advancement principle
The Parkinson's law
The Peter principle
The job design principle

The correct answer is C. The Peter principle.

The Peter principle is a concept in management developed by Laurence J. Peter, which states that in a hierarchy, every employee tends to rise to his or her level of incompetence. In other words, employees are promoted based on their success in previous jobs until they reach a level at which they are no longer competent, as skills in one job do not necessarily translate to another. This level is then their “Peter principle level” and they remain in this role until they are fired or retire.

The Peter principle is a well-known and often-cited concept in management, but it is important to note that it is not without its critics. Some argue that the principle is too simplistic and does not take into account the many factors that can affect an employee’s performance. Others argue that the principle is based on a misunderstanding of how organizations work.

Despite these criticisms, the Peter principle remains a popular concept and is often used to explain why employees sometimes seem to be promoted beyond their level of competence.

The other options are incorrect for the following reasons:

  • A. The advancement principle is the idea that employees should be promoted based on their merit and performance.
  • B. Parkinson’s law is the observation that work expands so as to fill the time available for its completion.
  • D. The job design principle is the idea that jobs should be designed to be challenging and rewarding, and to allow employees to use their skills and abilities.