In many sub-Saharan African countrieshousehold surveys are well designed to measure consumptionand poverty as well as human development outcomes(especially in education and health) and access to basicinfrastructure. But detailed information on the sources ofincome and the livelihoods of households and individuals arestill often lacking. This is problematic because income datais essential to identify the links between growth andpoverty reduction, to determine ways to improve householdwell-being, and to understand the potential impacts ofeconomic shocks and policy reforms. In a context wherecountries as well as international organizations such as theWorld Bank are asked to document the potential poverty andsocial impact of the reforms that they propose (throughPoverty and Social Impact Analysis), it is important toencourage countries to start collecting data or to improvedata collection on income sources.