Oh sure! While we’re at it, let’s increase the existing dystopia by giving employers the ability to track our stress levels and let them “compensate” as they see fit…

This is one of those ideas that might sound good when you don't think about secondary effects, but is actually commonly accepted to be a bad idea in the medical community. Similar to white coat hypertension [0], measuring your stress can induce stress, whether that's worrying about whether you're in a good range, getting more stressed when you find out you're already stressed, or etc. This is why continuous monitoring is usually applied as little as reasonably possible, unless absolutely necessary like diabetes, ER, etc.

[0] https://en.wikipedia.org/wiki/White_coat_hypertension