Every employee can be reviewed! It's fair. Here's the thing though, I said you need 3 to 4 negative reviews before the entire review profile becomes public.

Each engineer has one manager, thus they have one review. The profile doesn't open up until after the engineer worked for several managers and 3 or 4 of them leave bad reviews.

It's fair. But managers are more at risk. Still this process keeps everyone in line. Don't be a jackass is the key metric here.