The Peter principle: Why high performers struggle as managers

The Peter principle says people get promoted based on performance in their current role until they reach a role they can’t do well, then stay there. Laurence J. Peter published it in 1969 as satire. Fifty years of research has treated it as description.

For HR, it isn’t a joke about incompetence. It’s a structural flaw in how most organizations promote, and it’s fixable.

The Peter principle states that employees rise to their level of incompetence.

The mechanism is simple. Promotion rewards performance in the current job, but the next job requires different skills. Someone keeps getting promoted while they’re good at each successive role. They stop getting promoted when they reach one they’re not good at. So they stay there.

The result is an organization where a meaningful share of roles are held by people performing below the standard, through no fault of their own and by a process working exactly as designed.

Stanford Graduate School of Business research has examined this as a formal theory rather than an observation, which tells you how seriously the idea is now taken.

The best individual contributors are the most likely to be promoted and the least prepared for what follows.

Four things drive it:

• Different skills. Writing excellent code and developing engineers are unrelated capabilities. Success at one predicts nothing about the other.
• Promotion as reward. Organizations use management as the only recognition mechanism, so the sole route to more money and status runs through a job the person may not want.
• No preparation. The promotion is the training. New managers learn on live problems with real people.
• Loss of the thing they were good at. A strong performer becomes a weak manager and also stops doing the work that made them feel competent.

Careerminds research from the Leadership Readiness Gap shows how invisible this is from the top: 66% of C-suite respondents called managers very ready, against just 42% closer to the front line. The people who approved the promotions are the least likely to see the outcome.

Four signals show up before the performance data does.

The team’s output drops after a promotion. The new manager keeps doing the technical work, and the team waits.

Escalations increase. A manager who can’t delegate becomes the queue. Delegation of authority is the specific skill missing here, and it’s teachable.

Regretted turnover concentrates under one manager. Look at exits by manager rather than by department, and the pattern is usually obvious within two quarters.

The manager is visibly struggling. They work longer hours than anyone, apologize often, and describe the job as something to survive. Their leadership blind spots get worse under that pressure, not better.

Five changes address the cause rather than the symptom.

1. Build a genuine individual contributor track. If the only way to earn more is to manage people, you will promote people who shouldn’t manage. A dual ladder inside your career framework gives senior technical people equivalent pay and status without a team. This is the single highest-impact fix and the one most organizations skip.

2. Promote on evidence of the next job, not the current one. Give people real management work first: onboarding a new starter, running a project team, mentoring a junior. Then decide.

3. Ask whether they want it. Plenty of strong performers accept management because refusing looks like a lack of ambition. Make declining a safe, normal choice with no career penalty.

4. Train before the promotion, not after. Manager development programs that start after someone already has a team are catching up rather than preparing.

5. Give the first 90 days structure and support. Regular coaching, a defined check-in rhythm, and someone experienced to talk to. Most failures happen in this window and most are recoverable if caught.

You have three options and one of them is usually ignored.

Support and develop. Most struggling managers are recoverable with coaching and specific skill work. Assume this first, because the alternative costs more.

Return them to an individual contributor role. This works if you make it genuinely non-punitive: same pay, real seniority, no reduction in status. Organizations rarely offer it because they’ve framed management as promotion, which makes any return look like demotion. Fixing the framing makes this an available option instead of a last resort.

Manage them out. The most expensive route and the one taken most often, because the first two weren’t set up in advance.

The 9-box talent review helps make this call with evidence rather than instinct, particularly when you’re separating a capability problem from a preparation problem.

Slow-moving models treat a struggling manager as a performance case. Most of the time it’s a promotion decision made without evidence, and the organization owns it.

People get promoted for doing their current job well. Each promotion moves them into a role needing different skills. They keep rising while they succeed, and stop when they reach a job they can’t do well. Because promotion is one-directional in most organizations, they stay in that role. The result is people occupying positions slightly beyond their capability.

Yes, and arguably more so. Flatter structures mean fewer promotion steps and larger jumps between them. AI and constant restructuring have changed what management requires faster than promotion criteria have adapted. Organizations still promote mainly on current performance, which is the mechanism the principle describes.

Create a senior individual contributor track so management isn’t the only route to advancement, assess people on evidence of management capability rather than current output, confirm they actually want the role, train them before promotion rather than after, and support the first 90 days closely. The individual contributor track matters most, because it removes the pressure that causes bad promotions.

The Dilbert principle, coined by Scott Adams, argues that organizations promote their least effective people into management to limit the damage they can do. It was written as satire and has no research support. The more useful contrast is a system that promotes on demonstrated readiness for the next role rather than performance in the current one.

Careerminds has supported 20M people through career change, including managers who needed development and those who needed a different path. We help you build the frameworks and the coaching that make promotion decisions work.

Talk to our team about developing your managers.