This 34-chapter open-access book brings together leading scholars to investigate recent conceptual shifts, research findings and policy debates on the informal economy. Well over half of the global workforce and the vast majority of the workforce in developing countries work in the informal economy, and in countries around the world new forms of informal employment are emerging. Yet the informal workforce is not well understood, remains undervalued and is widely stigmatized.
Chen, Martha. "WIEGO Research on Informal Employment: Key Methods, Variables and Findings." The Informal Economy Revisited: Examining the Past, Envisioning the Future. Ed. Chen, Martha and Francoise Carre. Routledge, 2020.