Public Consumption Over The Business Cycle
What fraction of the business cycle volatility of government purchases is accounted for as endogenous reactions to overall macroeconomic conditions? The authors answer this question in the framework of a neoclassical representative household model where the provision of a public consumption good is decided upon endogenously and in a time-consistent fashion. A simple frictionless version of such a model with aggregate productivity as the sole driving force can explain almost all the volatility of U.S. non-defense government consumption expenditures. However, such a model fails to match other important features of the business cycle dynamics of public consumption, which comes out as not persistent enough and too synchronized with the cycle.