Where I work, there are basically set pay levels that one isn't allowed to fiddle with all that much, all the way to the CEO
This way, you don't get outlier high salaries for strong negotiators (which causes hurt feelings down the road for weaker negotiators), nor low salaries for weaker negotiators. Downside if someone pushes negotiation, there's basically no wiggle room. And the salaries themselves are a bit on the generous side of fair, so if someone thinks they're worth more, they're welcome to prove it because they probably aren't aligned with market rates.
This way, you don't get outlier high salaries for strong negotiators (which causes hurt feelings down the road for weaker negotiators), nor low salaries for weaker negotiators. Downside if someone pushes negotiation, there's basically no wiggle room. And the salaries themselves are a bit on the generous side of fair, so if someone thinks they're worth more, they're welcome to prove it because they probably aren't aligned with market rates.