The intention of this law is good for employee in spirit but I wonder if companies will now be reluctant to have clear career paths in fear of a lawsuit.
In this case they wanted a "big fish" type of engineer, they have to compete to get this type of employee because the guy has weight in the industry. I don't see how a company can not present a clear, desirable path to a prospective employee of this status and still expect to attract "high caliber" (whether perceived or real) talent.