The space of informal economic activity is rising across the globe, particularly in the least developed and developing countries. There has been a shift in academic thinking on informal sector, with attempts being made to understand the contribution of informal sector in generating employment and economic growth rather than focusing solely on exploitative labour conditions in these economic activities. This volume addresses a specific concern: the issue of knowledge generation and innovative activities, which lies at the core of sustained competitive advantage of these activities. The chapters were originally published in the African Journal of Science Technology Innovation and Development.