The late Steve Jobs may be as venerated within the company he founded as he is outside it. But that doesn’t mean his successor is suffering by comparison.

In fact, according to anonymous employee posts on the employer reviews website Glassdoor, Tim Cook has the highest approval rating of any CEO in tech — indeed, any CEO in the U.S. — a whopping 97%.

So, what’s the deal with the 3% of Apple employees who don’t like Tim Cook?