U.S. Office of Special Counsel USOSC US-amerikanisches Amt für Sonderermittlungen U.S. Office of Special Counsel Oficina del Consejero Especial de los Estados Unidos Oficina del Consejero Especial de los Estados Unidos Bureau du conseiller spécial des États-Unis המשרד לייעוץ מיוחד של ארצות הברית यूएस ऑफिस ऑफ स्पेशल काउंसल 米国特別検察官事務所 Escritório de Conselheiro Especial dos EUA 美国特别顾问办公室 USOSC U.S. Office of Special Counsel The United States Office of Special Counsel (OSC) is a permanent independent federal investigative and prosecutorial agency whose primary mission is the safeguarding of the merit system in federal employment by protecting employees and applicants from prohibited personnel practices (PPPs), especially reprisal for "whistleblowing."