How is a whistle blower protected by the law?

Well. You can start by doing a web. search of your state's Department's Labor and Employment service's for "Whistle blowers" protection law's for employee's who report fraudulent business practices at work. When you try to Report the Passable wast, overcharging or stealing of funds from your city's,state's and our Federal Government and be protected from retribution from your Employers.