Why the down votes?
This is a serious suggestion; I don't know the exact situation in America but in Europe all trade unions have trained advisers looking at stuff like this every day.
Going to an union is a much more effective and cheaper solution than every employee talking to an employment lawyer on their own.
You just call them, explain your situation and hear what they say.
In general they give you a quick evaluation and then say: In order for us to help you, you need to be a member - the price is xxx pr. month - if you sign up now we will work on your case straight away, we also have an insurrance that covers lawsuits and some other benefits.
I would have guessed that most union reps consult lawyers when they finalize a contract and don't have the law background needed.
I think the best way to describe danish unions are that they are a mix of us unions (that i don't know that much about) and law firms for worker.
Examples: http://www.ukape.org.uk/ https://www.prospect.org.uk/
Don't American doctors and teachers have a union?