I mentioned in another comment that I had clients years ago with the view you mention. They were primarily older, larger companies. Startups and small shops lik

I mentioned in another comment that I had clients years ago with the view you mention. They were primarily older, larger companies. Startups and small shops liked to see movement. Just based on my experience, I'd expect your employer is traditional and established. Long tenures can indicate loyalty and good performance, but it could also indicate other situations. Perhaps they couldn't get interviews or job offers from other firms. Maybe they got comfortable and found a place that wasn't too challenging. It could show someone that is risk averse (any job change has risk), or who is non-entrepreneurial. People who are overcompensated also tend to stick around.