We study a model with heterogeneous producers that face collateral and cash-in-advance constraints. A tightening of the collateral constraint results in a credit-crunch-generated recession that reproduces several features of the ﬁnancial crisis that unraveled in 2007 in the United States. The model can be used to study the effects of the credit-crunch on the main macroeconomic variables and the impact of alternative policies. The policy implications regarding forward guidance are in contrast with the prevalent view in most central banks, based on the New Keynesian explanation of the liquidity trap.
In this article, we analyze the implications of price-setting restrictions for the conduct of cyclical fiscal and monetary policy. We consider standard monetary economies that differ in the price-setting restrictions imposed on the firms. We show that, independently of the degree or type of price stickiness, it is possible to implement the same efficient set of allocations and that each allocation in that set is implemented with policies that are also independent of the price stickiness. In this sense, environments with different price-setting restrictions are equivalent.
Following the sovereign debt crisis of 2012, some southern European countries have debated proposals to leave the Euro. We evaluate this policy change in a standard monetary model with seigniorage financing of the deficit. The main novel feature is that we depart from rational expectations while maintaining full rationality of agents in a sense made very precise. Our first contribution is to show that small departures from rational expectations imply that inflation upon exit can be orders of magnitude higher than under rational expectations. Our second contribution is to provide a framework for policy analysis in models without rational expectations.
When the zero lower bound on nominal interest rates binds, monetary policy cannot provide appropriate stimulus. We show that, in the standard New Keynesian model, tax policy can deliver such stimulus at no cost and in a time-consistent manner. There is no need to use inefficient policies such as wasteful public spending or future commitments to low interest rates.
We analyze optimal policy in a simple small open economy model with price setting frictions. In particular, we study the optimal response of the nominal exchange rate following a terms of trade shock. We depart from the New Keynesian literature in that we explicitly model interna-tionally traded commodities as intermediate inputs in the production of local final goods and assume that the small open economy takes this price as given. This modification not only is in line with the long-standing tradition of small open economy models, but also changes the optimal movements in the exchange rate. In contrast with the recent small open economy New Keynesian literature, our model is able to reproduce the comovement between the nominal exchange rate and the price of exports, as it has been documented in the commodity currencies literature. Although we show there are preferences for which price stability is optimal even without flexible fiscal instruments, our model suggests that more attention should be given to the coordination between monetary and fiscal policy (taxes) in small open economies that are heavily dependent on exports of commodities. The model we propose is a useful framework in which to study fear of floating.
This paper makes two straightforward points that we argue are central to understanding the literature and debate surrounding the stability of the Phillips curve. First, the endogeneity of monetary policy implies that aggregate data are largely uninformative as to the existence of a stable relationship between unemployment and future inflation. Second, if the NAIRU model is assumed to be true, regional data can be used to identify the structural relationship between unemployment and future inflation. We find that a 1 percentage point increase in the unemployment rate is associated with a roughly 0.3 percentage point decline in inflation over the next year.
We study a model with heterogeneous producers that face collateral and cash-in-advance constraints. These two frictions give rise to a nontrivial financial market in a monetary economy. A tightening of the collateral constraint results in a recession generated by a credit crunch. The model can be used to study the effects on the main macroeconomic variables, and on the welfare of each individual of alternative monetary and fiscal policies following the credit crunch. The model reproduces several features of the recent financial crisis, such as the persistent negative real interest rates, the prolonged period at the zero bound for the nominal interest rate, and the collapse in investment and low inflation in spite of the very large increases in liquidity adopted by the government. The policy implications are in sharp contrast to the prevalent view in most central banks, which is based on the New Keynesian explanation of the liquidity trap.