The document summarizes a seminar held by the OECD on revisiting whistleblower protection. The seminar consisted of three sessions exploring key issues around ensuring legal protection for whistleblowers, designing effective protection mechanisms, and changing cultural attitudes towards whistleblowing. Speakers in the sessions included representatives from government agencies and non-profits working on anti-corruption and transparency issues. The goal of the seminar was to advance the policy debate and identify best practices for providing clear procedures and effective protection to encourage whistleblowing.