The informal sector deprives states of revenues and workers of social protection. It also, however, frequently constitutes the most dynamic part of the economy and creates massive employment. Informal employment is ubiquitous and growing. The financial crisis that began in 2008 has made the...

In developing countries, informal firms (those that are not registered with the government) account for about half of all economic activity. We consider three broad views of the role of such firms in economic development. According to the romantic view, these firms would become the engine of...

This paper investigates the determinants of informal economic activity. We present two equilibrium models of informality and test their implications using a survey of 48,000+ small firms in Brazil. We define informality as tax avoidance; firms in the informal sector avoid tax payments but suffer...