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Working Paper
The Shimer puzzle and the identification of productivity shocks
Shimer (2005) argues that the Mortensen-Pissarides (MP) model of unemployment lacks an amplification mechanism because it generates less than 10 percent of the observed business cycle fluctuations in unemployment given labor productivity shocks of plausible magnitude. This paper argues that part of the problem lies with the identification of productivity shocks. Because of the endogeneity of measured labor productivity, filtering out the trend component as in Shimer (2005) may not correctly identify the shocks driving unemployment. Using a New-Keynesian framework to control for the ...
Journal Article
How Tight Is the U.S. Labor Market?
The U.S. unemployment rate fell to a very low level at the end of 2016, raising the question of whether the labor market has become too tight. After applying a new method to adjust for demographic changes in the labor force, the current unemployment rate is still 0.3 to 0.4 percentage point higher than at past labor market peaks. This indicates that the labor market may not be quite as tight as the headline unemployment rate suggests.
Working Paper
Understanding the Size of the Government Spending Multiplier: It's in the Sign
The literature on the government spending multiplier has implicitly assumed that an increase in government spending has the same (mirror-image) effect as a decrease in government spending. We show that relaxing this assumption is important to understand the effects of fiscal policy. Regardless of whether we identify government spending shocks from (i) a narrative approach, or (ii) a timing restriction, we find that the contractionary multiplier?the multiplier associated with a negative shock to government spending?is above 1 and even larger in times of economic slack. In contrast, the ...
Working Paper
Gaussian Mixture Approximations of Impulse Responses and the Nonlinear Effects of Monetary Shocks
This paper proposes a new method to estimate the (possibly nonlinear) dynamic effects of structural shocks by using Gaussian basis functions to parametrize impulse response functions. We apply our approach to the study of monetary policy and obtain two main results. First, regardless of whether we identify monetary shocks from (i) a timing restriction, (ii) sign restrictions, or (iii) a narrative approach, the effects of monetary policy are highly asymmetric: A contractionary shock has a strong adverse effect on unemployment, but an expansionary shock has little effect. Second, an ...
Journal Article
Adjusting the Unemployment Thermometer
Stay-at-home orders issued to slow the spread of COVID-19 may have severely distorted labor market statistics, notably the official unemployment rate. A method to correct the survey biases associated with the pandemic indicates that the true unemployment rate was substantially higher than the official rate in April and May. However, the biases appeared to fade thereafter, making the drop in June even more dramatic than implied by the official data.
Briefing
Are the Effects of Monetary Policy Asymmetric?
The Federal Reserve uses monetary policy to stimulate the economy when unemployment is high and to rein in inflationary pressures when the economy is overheating. However, evidence suggests that these policy stances have unequal effects. Contractionary monetary shocks raise unemployment more strongly than expansionary shocks lower it.
Working Paper
Demand-driven job separation: reconciling search models with the ins and outs of unemployment
This paper presents a search model of unemployment with a new mechanism of job separation based on firms' demand constraints. The model is consistent with the cyclical behavior of labor market variables and can account for three stylized facts about unemployment that the Mortensen-Pissarides (1994) model has difficulties explaining jointly: (i) the unemployment-vacancy correlation is negative, (ii) the contribution of the job separation rate to unemployment fluctuations is small but non-trivial, (iii) movements in the job separation rate are sharp and short-lived while movements in the job ...
Journal Article
What If? Monetary Policy in Hindsight
If the Federal Reserve had expected the upcoming inflation surge back in March 2021, would it have acted differently? A new method to tackle such “what if” questions suggests that it may have been preferable to only moderately raise the federal funds rate during 2021, even with perfect foresight. In that case, inflation would have been about 1 percentage point lower as of June 2022, while unemployment would be about 2 percentage points higher. This result reflects the importance of the Fed’s dual mandate of price stability and maximum employment.
Working Paper
Theory Ahead of Measurement? Assessing the Nonlinear Effects of Financial Market Disruptions
An important, yet untested, prediction of many macro models with financial frictions is that financial market disruptions can have highly nonlinear effects on economic activity. This paper presents empirical evidence supporting this prediction, and in particular that financial shocks have substantial (i) asymmetric and (ii) state dependent effects. First, negative shocks to credit supply have large and persistent effects on output, but positive shocks have no significant effect. Second, credit supply shocks have larger and more persistent effects in periods of weak economic growth.
Working Paper
Understanding the Size of the Government Spending Multiplier: It's in the Sign
This paper argues that an important, yet overlooked, determinant of the government spending multiplier is the direction of the fiscal intervention. Regardless of whether we identify government spending shocks from (i) a narrative approach, or (ii) a timing restriction, we find that the contractionary multiplier- the multiplier associated with a negative shock to government spending- is above 1 and largest in times of economic slack. In contrast, the expansionary multiplier- the multiplier associated with a positive shock- is substantially below 1 regardless of the state of the cycle. These ...