# Why Your Best Salesperson Makes Your Worst Manager

Page: https://stenobird.com/podcast/fit-happens-the-executive-search-podcast-7795405/why-your-best-salesperson-makes-your-worst-manager
Text version: https://stenobird.com/podcast/fit-happens-the-executive-search-podcast-7795405/why-your-best-salesperson-makes-your-worst-manager.md
Podcast: [Fit Happens: Why CEOs and Leaders Succeed or Fail](https://stenobird.com/podcast/fit-happens-the-executive-search-podcast-7795405)
Published: 2026-07-09T11:00:00+00:00
Episode link: https://share.transistor.fm/s/7684589d
Audio file: https://op3.dev/e/media.transistor.fm/7684589d/636bdfb9.mp3
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JSON: https://stenobird.com/v1/public/podcasts/fit-happens-the-executive-search-podcast-7795405/episodes/why-your-best-salesperson-makes-your-worst-manager
Duration seconds: 1022

## Resource

Your best salesperson just got promoted to manager. Here's why that's often a mistake. In this solo episode, Jason Baumgarten unpacks the Peter Principle, the half-century-old idea that people in a hierarchy rise to their level of incompetence, and the 2019 study that proved it's not just a joke. Drawing on research covering tens of thousands of salespeople across more than 130 companies, Jason breaks down why raw performance predicts promotion but not management success, what signal actually does predict good leadership, and what companies and individuals can do to stop rewarding talent with the wrong job. Key takeaways: The Peter Principle started as satire in 1969 and was later tested with real data Companies reliably promote their best individual performers into management Higher individual sales performance actually predicted worse performance as a manager Teamwork and lead-sharing, not solo output, predicted who became a good manager Promotion works as both a matching decision and a motivational carrot, and those two goals conflict Dual-career ladders let top performers advance without moving into management Rewards should be separated from roles: pay and recognition for performance, promotion for leadership fit Succession decisions should be judged against the next job, not the one someone already mastered Individuals should ask whether they want the job itself or just the recognition that comes with it Connect with Jason: https://www.linkedin.com/in/jasonbaumgarten/ Email the show here: fithappens.fm 00:00 Introduction to Fit Happens 00:17 The best salesperson gets promoted 01:08 Why companies do this on purpose 01:40 The Peter Principle, explained 02:22 The famous punchline 03:10 Testing the joke with real data 03:36 The 2019 study, explained 04:06 Do companie…

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