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Minding the Output Gap: What Is Potential GDP and Why Does It Matter?
Potential output is an estimate of what the economy could produce. Actual output is what the economy does produce. If actual is below potential -- a negative output gap -- there is "slack" in the economy. If actual is above potential -- a positive output gap -- resources are fully employed, or perhaps overutilized. This issue of Page One Economics explains how the output gap is useful for checking the health of the economy. It also points out how errors in the estimation of potential real GDP can reduce the effectiveness of policy.
Working Paper
The Impact of COVID on Potential Output
The level of potential output is likely to be subdued post-COVID relative to its previous estimates. Most clearly, capital input and full-employment labor will both be lower than they previously were. Quantitatively, however, these effects appear relatively modest. In the long run, labor scarring could lead to lower levels of employment, but the slow pre-recession pace of GDP growth is unlikely to be substantially affected.
Working Paper
A State-Level Analysis of Okun's Law
Okun's law is an empirical relationship that measures the correlation between the deviation of the unemployment rate from its natural rate and the deviation of output growth from its potential. This relationship is often referred to by policy makers and used by forecasters. In this paper, we estimate Okun's coefficients separately for each U.S. state using an unobserved components framework and find variation of the coefficients across states. We exploit this heterogeneity of Okun's coefficients to directly examine the potential factors that shape Okun's law, and find that indicators of more ...
Working Paper
The Impact of COVID on Productivity and Potential Output
The U.S. economy came into the pandemic, and looks likely to leave it, on a slow-growth path. The near- term level of potential output has fallen because of shortfalls in labor that should reverse over time. Labor productivity, to a surprising degree, has followed an accelerated version of its Great Recession path with initially strong growth followed by weak growth. But, as of mid-2022, it appears that the overall level of labor and total factor productivity are only modestly affected. The sign of the effect depends on whether we use the strong income-side measures of pandemic output growth ...
Working Paper
A State-Level Analysis of Okun’s Law
Okun?s law is an empirical relationship that measures the correlation between the deviation of the unemployment rate from its natural rate and the deviation of output growth from its potential. In this paper, we estimate Okun?s coefficients for each U.S. state and examine the potential factors that explain the heterogeneity of the estimated Okun relationships. We find that indicators of more flexible labor markets (higher levels of education achievement in the population, lower rate of unionization, and a higher share of nonmanufacturing employment) are important determinants of the ...