"Blowing the Whistle on Corruption: A Global Survey of Public Sector Protections"
The International Labour Organization (ILO) just released its Working Paper 135 on "Protecting whistle-blowers in the public service" (only in English, for the time being), a robust and fascinating dive into how 67 countries handle whistleblower protection laws in the public sector.
https://publicservices.international/resources/publications/blowing-the-whistle-on-corruption-a-global-survey-of-public-sector-protections?id=15644&lang=en