Enterprise formalization: Fact or fiction? A quest for case studies

Background from the paper: "Governments across the world try to reduce the size of the informal sector, because of many negative aspects that are associated with informal enterprises both at macro and micro level, e.g. poor labour conditions, a poor tax basis and poor coverage of social protection. One of the ways to reduce the size of the informal sector is by stimulating the formalization of informal enterprises. To support governments in the design and implementation of their strategies regarding
the formalization of informal enterprises, Internationale Labour Organisation (ILO) and Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH on behalf of the Federal
Ministry for Economic Cooperation and Development (BMZ) wanted to know what is actually known about what works and what doesn’t. This study presents an overview of the current debate on formality and formalization of informal enterprises and the results of a search for case studies that provide credible proof of the quantitative effects of different types of formalization policies."

There is more information on the ILO website.