This paper discusses a possible solution to the problem that faces European governments in dealing with the future of Social Security pensions.

We study Ramsey-optimal fiscal policy in an economy in which product varieties are the result of forward-looking investment decisions by firms. There are two main results. First, depending on the particular form of variety aggregation in preferences, firms' dividend payments may be either...

L’effet de la dette publique sur l’investissement privé est théoriquement indéterminé. Ce lien peut aussi bien être négatif (debt overhang, effet d’éviction) que positif (effet accélérateur sur la croissance économique et donc sur l’investissement privé). Notre étude consiste...

This paper explores different fiscal stimuli within a business cycle model with an endogenous mass of firms which we estimate for the U.S. economy using Bayesian techniques. We demonstrate that a changing mass of firms is a crucial dimension for evaluating fiscal policy since it can both...

We estimate how durable expenditures respond to government spending shocks at different points in the business cycle using a nonlinear VAR approach that allows for the durable multiplier to vary smoothly with the state of the economy. We find strong evidence that the aggregate durable spending...

We study Ramsey-optimal fiscal policy in an economy in which product varieties are the result of forward-looking investment decisions by firms. There are two main results. First, depending on the particular form of variety aggregation in preferences, firms' dividend payments may be either...

We analyze how investment subsidies can affect aggregate volatility and growth in economies subject to capital market imperfections. Within a model featuring both frictions on the credit market and unequal access to investment opportunities among individuals, we provide specific fiscal...

The sensitivity of U.S. aggregate investment to shocks is procyclical: the initial response increases by approximately 50% from the trough to the peak of the business cycle. This feature of the data follows naturally from a DSGE model with lumpy microeconomic capital adjustment. Beyond...

Robert Solow has criticized our 2006 Journal of Economic Perspectives essay describing "Modern Macroeconomics in Practice." Solow eloquently voices the commonly heard complaint that too much macroeconomic work today starts with a model with a single type of agent. We argue that modern...

In this paper, we carry out qualitative and quantitative analyses of impacts of factor market distortions on Japan's economic stagnation in the 1990s, thereby showing that resolution of structural impediments is essential for the restoration of sustained economic growth. Distortions in factor...