Typically, a whistleblower is an employee who discovers their employer is/might be violating the law and complains about it internally or externally. Then, in retaliation for the complaint the employee is fired, disciplined, demoted, etc.
Am I a Whistleblower? There are many different types of laws that provide protection to employees who make complaints about potential illegal activities by their employers. Some of the laws that protect whistleblowers include laws about:
Doctors, nurses, medical assistants or other health care professionals complaining about patient care, safety, services, or conditions at a medical facility.
An employee is complaining that the employer is, or might be, defrauding the government or misusing government funds.
An employee who blows the whistle on fraud against shareholders or violations of securities and exchange laws.
That an employer is engaging in conduct in violation of public policy.