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This paper examines whether labor productivity converged across Peru’s regions (“departments”) during 2002-12. Given the large differences in labor productivity across the regions of Peru, such convergence has the potential to raise aggregate productivity and incomes, and also reduce regional inequalities. The paper finds that labor productivity in the secondary sector (especially manufacturing) and the mining sector has converged across Peruvian departments. The paper does not find robust evidence for labor productivity convergence in agriculture and services. These patterns are consistent with recent cross-country evidence and with the hypothesis that productivity convergence is more likely in sectors with greater scope for market integration, because of the effects of competition and knowledge flows. The convergence in labor productivity within manufacturing and mining has been sufficient to lead to convergence in aggregate labor productivity across departments. But because services and agriculture continue to employ the majority of workers in Peru, aggregate convergence is slower than that within manufacturing. The paper also finds that poverty rates are not converging across departments. The limited impact of labor productivity convergence on poverty could be tied to the facts that not all sectors are experiencing productivity convergence, poorer people are employed in sectors where convergence has been slower (such as agriculture), and there is very little labor reallocation toward converging sectors (such as manufacturing).

Do regions with higher working age populations grow faster? This paper examines this question using data from Russian regions and finds evidence that demographic trends influence regional growth convergence. In other words, keeping other factors constant, poorer regions grow faster than richer regions, and some of the growth convergence is explained by demographic changes: faster growth in poor regions in the past was related in part to more favorable demographic trends. This finding has important consequences for Russia. If the demographic trends in poorer regions worsen in the future, this could dampen economic convergence. Unless there are significant increases in labor productivity or additions to the labor force through migration, growth in Russian regions will moderate as the Russian population shrinks and ages in the coming decades.

This paper uses new data on agricultural policy interventions to examine the political economy of agricultural trade policies in Sub-Saharan Africa. Historically, African governments have discriminated against agricultural producers in general (relative to producers in non-agricultural sectors), and against producers of export agriculture in particular. While more moderate in recent years, these patterns of discrimination persist. They do so even though farmers comprise a political majority. Rather than claiming the existence of a single best approach to the analysis of policy choice, the authors explore the impact of three factors: institutions, regional inequality, and tax revenue-generation. The authors find that agricultural taxation increases with the rural population share in the absence of electoral party competition; yet, the existence of party competition turns the lobbying disadvantage of the rural majority into political advantage. The authors also find that privileged cash crop regions are particular targets for redistributive taxation, unless the country's president comes from that region. In addition, governments of resource-rich countries, while continuing to tax export producers, reduce their taxation of food consumers.