From 1970 to 2010, sub-Saharan African's (SSA) labour productivity hovered at around 6% of the US level. This lacklustre performance, which remained stubbornly low despite the SSA's growth spurt that started in the mid-1990s, masks a great deal of variations across sectors and countries. Using a structural decomposition, we examine, for a representative sample of SSA countries, the sectoral sources that hold back their convergence to the US frontier. Our results suggest the presence of strongand possibly long-lastingheadwinds that have wiped out the favourable effects of substantial, yet circumstantial, tailwinds. Headwinds, quantified by the unfavourable within-and reallocation-effects, are indicative of significant capital-deepening and technology gaps, both of which are extremely hard to bridge. The tailwinds, represented by favourable between-effects, result from the convergence of the SSA labour force to sectors where some US sectors have seen a slowdown of their productivity relative to that of the whole economya development unrelated to the fundamentals underlying the SSA economy. Although few exceptions emerged out of this general pattern, these results are indicative of a bleak outlook for the SSA economic performance at least in the medium run.
KEYWORDSConvergence decomposition; productivity growth; structural change; sub-Saharan Africa JEL CLASSIFICATION N10; O47; O55; O57 1 This sample includes some landlocked, resource-scarce economies (Ethiopia and Malawi), some coastal, resource-scarce economies (Ghana, Kenya, Mauritius, Senegal and Tanzania) and some resource-rich countries (Botswana, Nigeria, South Africa and Zambia).