“In a hierarchy, every employee tends to rise to their level of incompetence.”

The Peter Principle is a management concept first introduced in 1969 by Laurence J. Peter and Raymond Hull. It states that in hierarchical organizations, employees are promoted based on their success in previous roles until they reach a level at which they are no longer competent—their “level of incompetence.”

This happens because the skills that make someone excel in one job don’t always overlap with those needed for their new, higher role, leading to decreased performance after promotion. Although the book was written as satire, it resonated as a serious critique of organizational promotion practices. Over time, research and real-world observation have provided evidence that supports the existence of this effect.

What does this mean in practice?

  • 📈 Current Performance Bias: People are promoted based on how well they perform in their current role.
  • 🔁 Skill Disconnect: Eventually, they’re moved into a new position that demands a completely different skill set.
  • ⚠️ The Stagnation Trap: When they no longer perform well... they stay stuck there! Often indefinitely.

The Software Developer Example: Take a great software developer. He is great as an individual contributor, so he’s promoted to team lead. But leadership is about people management, planning, and communication—not just code. If he struggles, he won’t be moved to a different role; he will be just quietly trapped in a role that no longer fits him. Something similar tends to happen in more senior roles.

🛠 How can it be avoided?

To break the cycle of the Peter Principle, organizations must evolve their approach to talent management:

✅ Promote based on potential for the next role Don’t just reward current performance. Evaluate the skills required in the next role, such as emotional intelligence, delegation, and coaching. Use role-specific competencies and structured interviews.

✅ Provide leadership training before and after the transition Offer training, mentoring, or job shadowing before someone steps into a new role. Let them “try before they fly.”

✅ Normalize stepping back Make it culturally safe to step out of a misaligned role without stigma. Sometimes, people realize management isn’t for them—and that’s okay.

✅ 360° feedback loops Use structured feedback from peers, reports, and managers to regularly evaluate whether someone is thriving or just surviving in their new role.

A Satirical Reality Check

From Peter’s original book:

“Work is accomplished by those employees who have not yet reached their level of incompetence.”

Ouch.

To dive deeper into the data, you can read more about this on Forbes.