This Practice Note describes the Whistleblower Protection Act of 1989 (WPA), as amended by the Whistleblower Protection Enhancement Act of 2012 (WPEA). It discusses whistleblower protections for federal employees under the WPA, including protected disclosures, covered federal employers, elements of the two classes of retaliation claims, the roles of the Office of Special Counsel (OSC) and the Merit Systems Protection Board (MSPB) in adjudicating whistleblower retaliation claims, and remedies available under the WPA. This Note covers federal law and applies only to federal employees.