Every company seems to have someone who earned applause for doing hands-on work better than anyone else. Yet after that person is promoted to team leader, meetings often drag on, decisions slow down, and complaints from team members pile up. It is clearly the same person, but once the position changes, they suddenly seem to have become someone who can’t do the job. A well-known concept that explains this phenomenon is the ‘Peter Principle.’
Put simply, the Peter Principle is the claim that ‘in a hierarchical organization, people tend to be promoted up to the position where their incompetence becomes apparent.’ It was first introduced in the 1969 book “The Peter Principle” by Canadian-born educator Laurence J. Peter and writer Raymond Hull. Although the book was written as satire, it became a bestseller as many office workers felt it described their own companies, and today it is an indispensable concept whenever promotion systems are discussed in management and organizational theory.
This article explains, in an easy-to-understand way, everything from the basic definition of the Peter Principle to why capable people come to look incompetent, real cases confirmed by research, and how organizations can avoid this trap.
The Peter Principle: The Incompetence Trap Created by Promotion
What Is the Peter Principle?
The Peter Principle starts from the fact that promotions are usually based on ‘how well someone has performed in their current position.’ A person who does good work moves up one level, and if they do well there too, they move up again. This process stops when the person arrives at a position where they can no longer perform well. With no results in that position, they can’t be promoted further, yet they aren’t moved back down either, so they end up staying there for a long time.
Based on this logic, Peter drew several conclusions. Here are some useful terms to know along with it.
- Level of Incompetence: The position at which a person, after repeated promotions, can no longer perform their role properly.
- Peter’s Corollary: The claim that, over time, every position tends to be filled by someone who cannot handle its duties.
- The people who actually do the work: According to Peter, an organization’s work is accomplished by those who have not yet reached their level of incompetence.
- Hierarchy: An organization with ranks stacked layer upon layer; the principle applies equally not only to companies but also to schools, the military, and public institutions.
Why Capable People Look Incompetent
The incompetence the Peter Principle refers to does not mean that a person’s abilities have suddenly vanished. It is closer to saying that the abilities the new position demands differ from those of the previous one.
(1) Different Abilities for Different Positions
An outstanding salesperson’s strength is the ability to persuade customers, but for a sales team leader, the ability to teach team members, divide up goals, and mediate conflicts matters more. When a skilled developer becomes a manager, they have to deal with schedules and people instead of code. In effect, performance at one stage does not guarantee performance at the next.
(2) Promotions That Predict the Future from Past Performance
Because it is hard to test in advance whether someone will do well in a new position, many organizations choose whom to promote based on the easiest evidence available: their track record so far. This tendency grows stronger in organizations where promotion is effectively the only means of reward.
(3) A Structure That Makes Going Back Difficult
Even when someone realizes after a promotion that the job doesn’t suit them, returning to their previous position is seen as a demotion, so both the person and the organization are reluctant to do it. As a result, people end up staying in positions that don’t fit them.
The Peter Principle Confirmed by Research
Initially taken as satire, the Peter Principle later began to be tested with real data and models.
(1) A Study of Salesperson Promotions
Economists Alan Benson, Danielle Li, and Kelly Shue analyzed data on salespeople at many U.S. companies and published a paper titled “Promotions and the Peter Principle” in 2019. The better a person’s sales performance, the more likely they were to be promoted to manager, but the performance of the teams they led actually tended to decline. This means the companies decided promotions based on sales results rather than management ability.
(2) A Simulation of Random Promotion
In 2010, Italian researchers Alessandro Pluchino, Andrea Rapisarda, and Cesare Garofalo used computer simulations to show that when each position requires different abilities, promoting people at random can be better for overall organizational efficiency than promoting only the best performers. The study drew attention when it won the Ig Nobel Prize in Management that same year.
How to Avoid the Peter Principle
Because the Peter Principle is a problem created by promotion systems rather than by individual failings, the solutions must also be found in the system. Methods frequently used in management practice include the following.
- Dual Career Ladder: Separate paths are set up for rising as a manager and for deepening expertise as a specialist, so that pay and status can rise without taking on a managerial post.
- Competency-Based Promotion: Candidates are evaluated and selected based on the abilities needed for the next position rather than on current performance.
- Trial Assignment: Candidates first take on an acting role or a project leader role to check in advance whether they suit the new position.
- Leadership Development: Management skills such as coaching, giving feedback, and resolving conflicts are taught before someone becomes a manager.
Leaving a Path Back Open
It is also important to let someone who has risen to an ill-fitting position return to their previous role without losing face. To avoid such problems, Peter even recommended the wisdom of staying just below one’s level of incompetence. When an organization comes to accept that not everyone has to become a manager to be successful, people can shine for a long time doing what they do best.
The Peter Principle reminds us that a promotion is both a reward and a test. Looking not only at the work someone has done well but also at the abilities needed for the work they will take on next is the first step toward people and organizations growing together.
