This document summarizes a research paper that examines the impact of the informal sector on employment generation in Nigeria from 1970 to 2010. The paper finds that informal sector activities significantly contribute to absorbing the large pool of unemployed labor in Nigeria. However, human capital formation is positively related to unemployment, reflecting lack of government spending on education. The informal sector plays an important role in the Nigerian economy through employment generation, capital mobilization, and entrepreneurship training, but it faces challenges such as lack of infrastructure, financing, and raw materials that have hindered its development and potential impact.