Earlier quoted context omitted.
Here's the thing, though. Wrongful termination lawsuits aren't "proof beyond a reasonable doubt". Most civil actions—including wrongful termination—need to show a "preponderance of evidence". That is, you need to convince a jury that the claim is more likely to be true than not true (e.g. 51%). So, assuming you have evidence of the chain of events: - Group shares salary openly - Employer says: "you cannot do that", s…
Here's the other thing though. Law suits are expensive. Law suits burn bridges (you'll never get a recommendation from an employer you've sued). Law suits prevent future jobs (would you hire someone who sued a previous employer?). And wrongful termination isn't the end. And things are rarely black-and-white. If your boss thinks you're a douche, it will hurt your career. If your next performance review is a 7 instead…
Don't know about the US, but in countries with strong (or existing) worker unions the unions would jump at that kind of case to help the employee with expenses, legal counsel, and what have you.
Unions definitely have their problems, but keeping the employers on their toes about actually breaking the law is one of their big benefits.
Of course all that doesn't help with all the other things you brought up, so there's that.