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The Peter Principle
A 1969 satire on why people get promoted until they reach a job they can't do
Why it’s worth your time
The Peter Principle, a 1969 satire, gave a name to a pattern that's easy to spot once you've heard it: doing one job well is often how you get handed a different one. Having the name in your head tends to help when the next promotion comes along, whether you're going after it, weighing an offer or deciding who gets it.
Why people get promoted to their level of incompetence
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- Read the first two chapters.
They set out the principle through a run of examples, each one a promotion into a job that needed something the previous job didn't. A later chapter on dodging promotion by appearing incompetent is part of the joke, so read it as satire.
- List what the job above yours spends its time on.
Write down three things the next level up does every week that your job doesn't, such as hiring, budgets, or settling disagreements between people. Next to each, note one time you've done it and how it went, or write not yet.
Good moments for this: before you apply for the next levelwhen a manager seems out of their depthwhen you're deciding who to promote
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Making it work for you
Every workplace is different. Here’s what to think about before you start, and what might get in the way.
Things to think about
Asking what the new job needs, rather than who did the old one best, tends to be the harder question. It can mean telling a strong performer not yet, with a reason they can work with. Some companies guard against this by looking for part of the next level's work before the title changes, which is worth asking about where you are.
What might make this harder
Take your list to the conversation and ask what the role would spend its time on, and what happens if you say not yet.
Questions people ask
What is The Peter Principle book about?
It's a 1969 satire by Laurence J. Peter and Raymond Hull, with Hull writing the text from Peter's research. Its claim is that in a hierarchy, people are promoted for doing well until they reach a job they can't do well, and then stay there, so over time many posts end up held by someone not suited to them.
How do you avoid the Peter Principle at work?
Before a step up, look at what the new job actually spends its time on and whether you've done any of it. If you're the one promoting, choose for the skills the new job needs as well as for results in the old one.
What is the Dilbert principle?
Scott Adams' 1996 twist on the idea, from his book of the same name: that incompetent people get promoted into management to get them out of the way of the real work. Peter's version has people promoted for doing well; Adams' has them promoted for doing badly.
What it says, and how it holds up
A promotion is usually a bet that someone who did one job well will do a different job well too. Peter and Hull follow that bet to its comic end. If people keep being promoted for doing well, each one tends to stop at the first job they don't do well. Their examples include a good teacher who makes a capable assistant principal and then a poor principal, and they invent a vocabulary for the dodges around it, like the lateral arabesque, a sideways move with a longer job title.
The joke has since been put to the test. Alan Benson, Danielle Li and Kelly Shue's study of sales workers at 214 firms found results consistent with the principle. Strong sales made promotion to manager more likely, while other traits did a better job of predicting who would manage well, and the authors estimate the mismatch was costly. Their own reading leaves two possibilities, either firms choose badly or the chance of promotion is such a strong motivator that it's worth the cost. That second reading suggests a promotion is partly a reward that keeps the rest of the team trying, as well as a judgment about who would lead best. The economist Edward Lazear argued that some of the slide is statistical: a promotion tends to follow a strong stretch, part of which may have been luck, so performance drifts back afterward. And a simulation by Alessandro Pluchino, Andrea Rapisarda and Cesare Garofalo, published in 2010 and winner of that year's tongue-in-cheek Ig Nobel Prize, found that in a model where the principle holds, promoting at random could beat promoting the best.
The principle rests on one mechanism, a hierarchy that rewards good work with promotion, and that mechanism tends to be weaker where companies pay senior specialists to stay specialists, so doing more of what you're good at can itself be a step up. Tom Schuller's The Paula Principle (2017) turns the idea around, arguing that many women end up working below their level of competence rather than above it.
If a whole team keeps falling short, looking for the one person promoted past their competence can mislead. W. Edwards Deming's Out of the Crisis makes a broader case at length: in his view most performance problems come from the system people work inside, the goals, tools and handoffs, and fixing the system tends to do more than replacing whoever sits in the job.
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Picked by Truest and described in our own words. The original belongs to its creator. Last updated October 9, 2026. We sell a career membership; where that’s relevant above, we say so.