Rudolfs Bems, Luciana Juvenal, Weifeng Liu, and Warwick J. McKibbin
This paper assesses the economic effects of climate policies on different regions and countries with a focus on external adjustment. The paper finds that various climate policies could have substantially different impacts on external balances over the next decade. A credible and globally coordinated carbon tax would decrease current account balances in greener advanced economies and increase current accounts in more fossil-fuel-dependent regions, reflecting a disproportionate decline in investment for the latter group. Green supply-side policies—green subsidy and infrastructure investment—would increase investment and saving but would have a more muted external sector impact because of the constrained pace of expansion for renewables or the symmetry of the infrastructure boost. Country characteristics, such as initial carbon intensity and net fossil fuel exports, ultimately determine the current account responses. For the global economy, a coordinated climate change mitigation policy package would shift capital towards advanced economies. Following an initial rise, the global interest rates would fall over time with increases in the carbon tax. These external sector effects, however, depend crucially on the degree of international policy coordination and credibility.
This Selected Issues paper focuses on labor productivity dynamics in Spain. Labor productivity has been a long-standing structural challenge in Spain. Productivity performance has been weak across several dimensions: labor productivity levels are significantly lower than in some peer economies, its growth rate has been low and not favored convergence, and differences in output per hour worked across Spanish regions is considerable. In the aftermath of the Global Financial Crisis, labor productivity in Spain exhibited a counter-cyclical pattern driven by the large reduction in employment. Total factor productivity (TFP) has been consistently low and lagging peers for decades. Sustained policy focus on raising productivity will be important to increase living standards, help rebuild fiscal buffers and make growth more inclusive. The empirical analysis benefits from the rich information in firm financial statements to provide a deep-dive study on differences across firms based on their size and age. Firm-level characteristics, such as balance sheet health and growth potentials, have also shown to be significant determinants for firm investment.
This paper studies the impact of U.S. immigration barriers on global knowledge production. We present four key findings. First, among Nobel Prize winners and Fields Medalists, migrants to the U.S. play a central role in the global knowledge network—representing 20-33% of the frontier knowledge producers. Second, using novel survey data and hand-curated life-histories of International Math Olympiad (IMO) medalists, we show that migrants to the U.S. are up to six times more productive than migrants to other countries—even after accounting for talent during one’s teenage years. Third, financing costs are a key factor preventing foreign talent from migrating abroad to pursue their dream careers, particularly for talent from developing countries. Fourth, certain ‘push’ incentives that reduce immigration barriers—by addressing financing constraints for top foreign talent—could increase the global scientific output of future cohorts by 42 percent. We concludeby discussing policy options for the U.S. and the global scientific community.