We present the estimated large-scale three-region DSGE model GEAR picturing Germany, the Euro Area and the Rest of the world. Compared to existing models of this type, GEAR incorporates a comprehensive fiscal block, involuntary unemployment and a complex international structure. We use the model...

We study optimal government spending in a business cycle model with labor income taxes and unemployment due to hiring costs. Labor market frictions raise the optimal steady state ratio of government spending to private consumption. The labor tax rate is higher since profits are taxed that arise...

We study optimal government spending in a business cycle model with frictional unemployment. The Ramsey optimal policy is contrasted with a reference policy which would be first best in a frictionless economy. Results are: the Ramsey policy i) implies a higher steady state ratio of government...

Short-time work is a labor market policy that subsidizes working time reductions among firms in financial difficulty to prevent layoffs. Many OECD countries have used this policy in the Great Recession. This paper shows that the effects of short-time work are strongly time dependent and...

This paper analyzes Germany's unusual labor market experience during the Great Recession. We estimate a general equilibrium model with a detailed labor market block for post-unification Germany. This allows us to disentangle the role of institutions (short-time work, government spending rules)...

In the last decade, over half of the EU countries in the euro area or with currenciespegged to the euro were hit by large risk premium shocks. Previous papers havefocused on the impact of these shocks on demand. This paper, by contrast, focuses onthe impact on supply. We show that risk premium...

In recent years, the US public debt has grown rapidly, with last fiscal year's deficit reaching nearly $1.3 trillion. Meanwhile, many of the euro nations with large amounts of public debt have come close to bankruptcy and loss of capital market access. The same may soon be true of many US states...

We use mean-field game theory to quantitatively compare two unemployment insurance (UI) extension policies commonly used during recessions: raising benefit levels versus extending the duration of benefits. Our heterogenous-agent model features costly job search and individual savings. Our...

I study the effects of fiscal policy responses to aggregate shocks in an economy where households face idiosyncratic unemployment risk in a search and matching (SaM) labor market. By assuming zero liquidity, the households' distribution is degenerate and the model is easily tractable. In the...

During the Covid-19 crisis, most OECD countries used short-time work (subsidized reductions in working hours) to preserve employment. This paper documents that short-time work affects the behavior of firms (supply) and households (demand). First, using household survey data from Germany, we show...