When a management position opens up, two options compete: promote a loyal employee or bring in a fresh face. In theory, external hires bring new energy and ideas. In practice, they’re expensive and harder to keep. A study published in the Journal of Applied Psychology by Hardy, Thiel, Gibson, Klotz, and Barsa followed more than 11,000 managers in a large restaurant chain before, during, and after the pandemic. The goal was to see who—internally promoted or externally hired—held up better when the job market went wild.
The results speak for themselves. During the “Great Resignation,” externally hired managers were about four times more likely to quit than those promoted from within. The internally promoted ones also received higher performance ratings, fewer customer complaints, and saw lower turnover among their team members. In short, internal promotion seems to build engagement that outside recruitment struggles to buy.
The researchers point out that the benefits of internal promotion aren’t just about performance. They’re about perception. Promoted employees feel supported and secure, while external hires often feel more vulnerable, especially in uncertain times. When the job market heats up and offers start flying, that sense of loyalty becomes a natural buffer against turnover.
In the end, the study highlights a simple truth: retention can’t be decreed, it has to be built. Promoting an employee says, “We believe in you.” Hiring from the outside is a bet that a newcomer will care enough to stay. In a market full of open doors, that bet looks increasingly risky.