The European Commission's Handbook of good practices in the fight against corruption maps a variety of anti-corruption practices in EU Member States that have proved to be useful in solving problems related to corruption, and which can inspire similar initiatives elsewhere. 

Key among these is Collective Action, which the Handbook explains and endorses in detail. It explains the key characteristics of Collective Action initiatives compared to accountability initiatives and lists several typologies and mechanisms.

The handbook states that potential results of engaging in Collective Action are:

• Increasing trust
• Ensuring integrity as a social norm
• Reducing control and sanctioning costs

The Handbook is a collaborative effort between Ecorys and Local Research Correspondents on Corruption in each Member State. It was authored by Mike Beke, Oksana Huss, Brigitte Slot and Jan Wynarski for the European Commission, Directorate-General Migration and Home Affairs.