Informality in Developing Countries: Persistence, Determinants and Policy Responses

Informality remains one of the central development challenges facing low‐ and middle‐income countries. Although rapid economic growth has transformed parts of East Asia, most developing regions continue to experience persistent shortages of productive and secure employment. A large share of workers remains outside formal systems of taxation, regulation and social protection. This paper examines why informality persists, reviews the major theoretical explanations for its existence, analyses empirical patterns across countries and over time and evaluates policy responses. The paper argues that informality is not a single category but a heterogeneous set of employment arrangements ranging from survival‐oriented activities to relatively productive enterprises operating outside formal regulatory systems. The persistence of informality reflects a combination of exclusion from high‐quality jobs, voluntary exit from formal arrangements, structural transformation failures, institutional weaknesses and limited demand for labour in productive sectors. Because of this heterogeneity, universal formalisation strategies are unlikely to succeed. Instead, development policy should adopt differentiated interventions tailored to specific groups of workers and enterprises while simultaneously expanding opportunities for decent and productive employment.