You should speak with an attorney who has experience with these issues. The California Employment Lawyers Association (CELA) maintains a database of such lawyers on its web site, www.cela.org. You can go to the web site and search for an attorney in your area. You also can call your local bar association for a referral.
Disclaimer: This answer does not constitute legal advice and cannot be relied on, as each situation is fact specific, and it is impossible to evaluate a legal problem without a comprehensive consultation and review of all the facts and documents at issue. This answer does not create an attorney-client relationship.