We consider economic development of sub-Saharan Africa from the perspective of slow convergence of productivity, both across sectors and firms within sectors. Why have 'productivity enclaves', islands of high productivity in a sea of smaller low-productivity firms, not diffused more rapidly? We...

Our central question is whether African countries can break into global manufacturing in a substantial way. Using a newly-constructed panel of firm-level data from the World Bank's Enterprise Surveys, we look at labor costs in a range of low and middle income countries in Africa and elsewhere....

Data from the World Bank Enterprise Surveys show that indirect costs (related to infrastructure and services) account for a relatively high share of firms' costs in poor African countries and pose a competitive burden on African firms. We estimate firm-level revenue and value-added functions for...