The Ceiling of Competence | Why the Best Worker Often Makes the Worst Boss (The Peter Principle)

You were brilliant at your job. So they took it away from you. It came with a handshake, a new title and a slightly bigger desk, and for about a week it felt wonderful. Then the calendar filled up. Budget meeting. Planning meeting. A meeting about why the planning meeting ran late. The thing you were actually good at, the thing that got you promoted, now happens in other people’s hands while you watch from a spreadsheet. And somewhere around month three, a quiet thought arrives that you would never say out loud. “I was better at the old job.”

If that thought has never visited you, it has almost certainly visited someone who manages you. Most of us have worked for a person who was clearly excellent at something, just not at the thing they were now doing. The brilliant nurse who became a tangled ward manager. The legendary teacher who became a distracted head of department. The best salesperson in the building who became the boss nobody wanted.

There is a name for this. It is called the Peter Principle, and it started life as a joke.

Madness Meter: 🪜🪜🪜🪜 The Last Rung (the moment you are promoted into the first job you are not good at, and nobody ever promotes you out of it.)

The Joke | An Interval in a Vancouver Theatre

The story, as Vancouver’s public library tells it, begins at an amateur play. Two men who did not know each other were standing in the interval at a small Vancouver theatre. One of them, a writer called Raymond Hull, complained that the show was a disaster. The other, an education professor called Laurence J. Peter, offered an explanation. People, he suggested, invariably rise to their level of incompetence.

Hull liked the line so much that the two of them turned it into a book. The Peter Principle came out in 1969, a satire of the schools and bureaucracies Peter had spent his career inside, and it became an international bestseller. Its central sentence is still quoted in offices all over the world. In a hierarchy every employee tends to rise to his level of incompetence.

It was meant to be funny. It was funny. The problem is that for fifty years, nobody could prove it was wrong.

Meet the Ladder Brain

The Ladder Brain is the part of every organization, and of every ambitious person, that believes the only reward for doing something well is to stop doing it. It sees a great salesperson and thinks “manager”. It sees a great surgeon and thinks “head of surgery”. It sees you, doing your job beautifully, and starts measuring you for the rung above.

The Ladder Brain is not cruel. It is trying to say thank you. It simply has one way of saying it, and that way involves handing you a completely different job and assuming the talent will travel with you. Sometimes it does. Often it stays on the rung below, waving.

The Study | 53,035 Salespeople and Their Bosses

In 2019, three economists, Alan Benson, Danielle Li and Kelly Shue, finally put the joke on trial. They had something Peter never had. Detailed records of 53,035 sales workers at 214 American firms between 2005 and 2011, including exactly how much each person sold, who got promoted to manager, and how the teams under those new managers performed afterwards.

Picture the sales floor these numbers describe. Rows of desks, a leaderboard on the wall, a name at the top of it month after month. When a manager’s job opens up, the name at the top of the leaderboard is the obvious choice. And the data confirm that firms make exactly that choice. Every time a worker doubled their sales, they became 14.3 percent more likely to be promoted.

Now follow the star into the manager’s office and watch the team. The researchers found the opposite pattern. Every time a new manager’s old sales figure doubled, the sales of the people working under them fell by about 7.5 percent. The best sellers were the most likely to get the job, and on average they were worse at it.

Half a century after a theatre interval in Vancouver, the joke had data.

The Paradox | Rewarded for the Job You Are Leaving

Here is the sentence that should itch. A promotion is a reward for the job you are about to stop doing.

Selling and managing sellers are two different crafts. One is about winning a customer. The other is about coaching, planning, sorting out arguments and making five other people better at winning customers. A promotion based on sales asks the wrong question. It checks how well you did the old job, and then hands you a new one. Peter’s point was that this keeps happening at every level. You keep climbing as long as you are good, and the climbing stops at the first rung where you are not. And that is where you stay.

The Surprise | Maybe It Was Just a Lucky Year

Before we blame every disappointing boss on bad promotions, there is a quieter explanation, and it comes from the Stanford economist Edward Lazear. In 2004, he pointed out that some of what looks like the Peter Principle needs no incompetence at all.

Think about why someone gets promoted. Partly because they are good. But partly because they had a great year, and great years are made of skill plus some luck. The big client who happened to call. The quiet season for the competition. Luck does not follow you up the ladder. So even if nothing about the person changes, their next year will usually look a little more ordinary than the one that got them promoted. Statisticians call this regression to the mean. Lazear said the same thing explains why movie sequels and second visits to a restaurant so often disappoint.

Read that carefully. Sometimes the new boss did not get worse. The old year was just better than they really were.

The Twist | The Physicists Who Said Promote at Random

Now the turn, and it comes from a very unlikely place. In 2010, three Italian physicists, Alessandro Pluchino, Andrea Rapisarda and Cesare Garofalo, built a computer model of an organization. Six levels, 160 positions, every simulated employee with a competence score. Then they tested different ways of promoting people.

If skill carries over from one rung to the next, promoting the best person works well, as common sense says. But if performance in the new job has nothing to do with performance in the old one, which is the Peter Principle’s claim, promoting the best person made the whole organization about 10 percent less efficient in their model. The safest strategies, when you do not know which world you are in, were to promote someone at random, or to alternate between promoting the best and the worst.

The paper won an Ig Nobel Prize for management in 2010, the prize for research that first makes people laugh and then makes them think. It is a simulation, not a real company, and nobody is suggesting you pick managers out of a hat. But it makes one thing painfully clear. If you promote people for skills the next job does not use, you might as well not be looking at the skills at all.

And here is the detail from the sales study that turns this from a joke into something useful. Benson, Li and Shue found that some top sellers did make good managers. The difference was how they had sold. Workers who often shared sales with colleagues, the team players, went on to be clearly better managers. Every doubling of that collaboration experience went with about 15.8 percent better results as a manager. The “lone wolves”, top sellers who almost never shared a sale, were if anything more likely to be promoted. Their teams then performed about 35 percent worse. The signal of a good future manager was sitting in the data all along. It just was not on the leaderboard.

The Stakes | Where the Ladder Bites

The Ladder Brain does not only live in sales departments.

The Classroom Cost. The teacher whose students adore them becomes the person who writes timetables. The school gains an administrator and loses its best lesson.

The Kitchen Cost. The cook with the gift for flavour becomes the head chef who spends the night shouting about stock levels. Very nice for the stock levels.

The Trainer Cost. The top performer is often asked to teach newcomers, and top performers are not always the best guides, because they have forgotten what it was like to be new. That glitch has its own article in The Once-You-Know Brain.

Your Own Career Cost. Most of us were raised to treat “up” as the only direction that counts. So we say yes to the next rung even when we love the one we are on, and then quietly wonder why work stopped feeling like ours.

What the Research Does Not Say

The Peter Principle is easy to turn into a cynical slogan, so it is worth being clear about its limits. The 1969 book was satire, not science. The strongest real evidence comes from sales, where performance is easy to count, and jobs where results are harder to measure may behave differently. Firms may also promote star sellers on purpose, because the chance of promotion keeps everyone working harder, and the researchers found that pay for performance can partly do the same job. The physicists’ result is a model, and it depends on assumptions about how skill carries over. None of this says your boss is incompetent. It says the ladder is often measuring the wrong thing.

The Named Tool | Count the Assists

In football, the scorer gets the headlines, but the person who keeps setting up goals for others is often the one holding the team together. Count the Assists borrows that idea. Before anyone is promoted into a job that is about other people, stop looking only at their own scoreboard and count how often they have made somebody else better.

The lever is simple. Swap the question. Not “who sold the most?” but “who helped the most other people sell?” Who answers the new starter’s questions without being asked? Who shares the credit on a big deal? Who do people go to when they are stuck? Those are the skills the manager’s job actually uses, and in the sales study they predicted good managers far better than the leaderboard did.

And if the ladder in question is your own, run the test on yourself. Look at the job above you and ask honestly how much of it you already do, and whether you enjoy it. If your best days are the days you helped someone else win, the next rung may suit you. If your best days are the days you won, there may be a better reward than a title.

How to Use It

1. Count the Assists. Before a promotion into managing people, list the times the candidate made others better. Shared wins, coaching, unblocking a colleague. Weigh that more heavily than their personal numbers.
2. Name the Next Job. Write down what the new role actually does all day, then judge people against that list, not against the job they are leaving. Most bad promotions skip this step.
3. Reward Without Relocating. If someone is brilliant where they are, find a way to pay, recognise or stretch them that does not take the brilliant thing away. The sales study found pay for performance can partly do the work a promotion does.
4. Allow for the Lucky Year. Look at several years of results, not the one standout year. Part of any peak is luck, and luck does not get promoted with you.

The Psychology Bits

• The Original Line: “In a hierarchy every employee tends to rise to his level of incompetence,” from The Peter Principle by Laurence J. Peter and Raymond Hull, 1969.
• The Data: In a 2019 study of 53,035 sales workers, the best sellers were more likely to be promoted and, on average, their new teams sold less.
• The Statistics Cousin: Regression to the mean means that an unusually good year is usually followed by a more ordinary one, which can look like decline after a promotion.
• Labels Stick to People Too: Once someone is “the top seller”, it is hard to see them as anything else, a cousin of the object glitch in The Tool Blindness Brain.

FAQ

Q | What is the Peter Principle? A | It is the idea that people in a hierarchy keep getting promoted while they do well, until they reach a role they are not good at, where they stay. It comes from a 1969 book by Laurence J. Peter and Raymond Hull.

Q | Is the Peter Principle real? A | There is real evidence for it. A 2019 study of sales workers at 214 US firms found that top sellers were more likely to be promoted and that their teams then performed worse on average. The original book, though, was satire, and the effect will vary between jobs.

Q | What is an example of the Peter Principle? A | The best salesperson is promoted to sales manager, but managing a team needs coaching and planning skills, not selling skills, so the team does worse than it would under someone else.

Q | Why do companies keep promoting their best performers? A | Performance is easy to measure, promotions reward hard work, and the chance of promotion motivates everyone else. The cost is that the skills for the next job may be quite different.

Q | Should companies promote people at random? A | A 2010 computer simulation found random promotion could beat promoting the best performer when skills do not carry over between levels. It was a model, not a real company, and the practical lesson is to promote for the skills the new job uses.

Q | How do you avoid the Peter Principle? A | Judge candidates against the skills the new role needs, give extra weight to collaboration and helping others, look at several years of results, and offer ways to reward great work that do not require changing jobs.

The Thing to Remember

Go back to month three, and the thought you would never say out loud. “I was better at the old job.” It sounds like failure. It is not. It is information.

The Peter Principle is usually told as a joke about other people’s incompetence. Underneath, it is a story about a ladder that only knows one direction. You are allowed to love the rung you are on. You are allowed to be the best at something and stay there on purpose. The ceiling of competence is not a wall you hit. It is a map of where your talent actually lives. The only real mistake is climbing past it without looking down.

Citations & Caveats

• Source 1: Peter, L. J., & Hull, R. (1969). The Peter Principle | Why Things Always Go Wrong. New York | William Morrow.
• Source 2: Benson, A., Li, D., & Shue, K. (2019). Promotions and the Peter Principle. The Quarterly Journal of Economics, 134(4), 2085-2134.
• Source 3: Lazear, E. P. (2004). The Peter Principle | A theory of decline. Journal of Political Economy, 112(S1), S141-S163.
• Source 4: Pluchino, A., Rapisarda, A., & Garofalo, C. (2010). The Peter principle revisited | A computational study. Physica A, 389(3), 467-472.
• Source 5: Vancouver Public Library, Literary Landmarks. Laurence J. Peter and Raymond Hull.

Caveat. The theatre story is the account given by the Vancouver Public Library and may have been polished in the retelling. The sales study covers one kind of work where results are easy to count, so its numbers should not be stretched to every profession. The percentages describe average patterns across many people, not any individual manager. The random-promotion result comes from a computer simulation that depends on its assumptions.

Disclaimer: This article is for informational purposes only and is not a substitute for professional career, management or psychological advice. The Peter Principle describes a pattern in how organizations promote people, not a judgment of any individual. If work stress or a career decision is weighing on you, consider speaking with a qualified professional.