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Author:Alvarez, Fernando 

Working Paper
Labor market policies in an equilibrium search model

We explore to what extent differences in employment and unemployment across economies can be generated by differences in labor market policies. We use a version of the Lucas-Prescott equilibrium search model with undirected search and endogenous labor-force participation. Minimum wages, degree of unionization, firing taxes, and unemployment benefits are introduced and their effects analyzed. When the model is calibrated to US observations it reproduces several of the elasticities of employment and unemployment with respect to changes in policies reported in the empirical literature. We find ...
Working Paper Series , Paper WP-99-10

Working Paper
If exchange rates are random walks then almost everything we say about monetary policy is wrong

The key question asked by standard monetary models used for policy analysis is how do changes in short term interest rates affect the economy. All of the standard models imply that such changes in interest rates affect the economy by altering the conditional means of the macroeconomic aggregates and have no effect on the conditional variances of these aggregates. We argue that the data on exchange rates imply nearly the opposite: fluctuations in interest rates are associated with nearly one-for-one changes in conditional variances and nearly no changes in conditional means. In this sense ...
Working Papers , Paper 650

Report
The Risk of Becoming Risk Averse: A Model of Asset Pricing and Trade Volumes

We develop a new general equilibrium model of asset pricing and asset trading volume in which agents? motivations to trade arise due to uninsurable idiosyncratic shocks to agents? risk tolerance. In response to these shocks, agents trade to rebalance their portfolios between risky and riskless assets. We study a positive question ? When does trade volume become a pricing factor? ? and a normative question ? What is the impact of Tobin taxes on asset trading on welfare? In our model, economies in which marketwide risk tolerance is negatively correlated with trade volume have a higher risk ...
Staff Report , Paper 577

Journal Article
If exchange rates are random walks, then almost everything we say about monetary policy is wrong

The key question asked by standard monetary models used for policy analysis is, How do changes in short-term interest rates affect the economy? All of the standard models imply that such changes in interest rates affect the economy by altering the conditional means of the macroeconomic aggregates and have no effect on the conditional variances of these aggregates. We argue that the data on exchange rates imply nearly the opposite: the observation that exchange rates are approximately random walks implies that fluctuations in interest rates are associated with nearly one-for-one changes in ...
Quarterly Review , Issue Jul , Pages 2-9

Report
Money, interest rates, and exchange rates with endogenously segmented markets

This paper analyzes the effects of money injections on interest rates and exchange rates in a model in which agents must pay a Baumol-Tobin style fixed cost to exchange bonds and money. Asset markets are endogenously segmented because this fixed cost leads agents to trade bonds and money only infrequently. When the government injects money through an open market operation, only those agents that are currently trading absorb these injections. Through their impact on these agents? consumption, these money injections affect real interest rates and real exchange rates. We show that the model ...
Staff Report , Paper 278

Report
If exchange rates are random walks, then almost everything we say about monetary policy is wrong

The key question asked by standard monetary models used for policy analysis, How do changes in short-term interest rates affect the economy? All of the standard models imply that such changes in interest rates affect the economy by altering the conditional means of the macroeconomic aggregates and have no effect on the conditional variances of these aggregates. We argue that the data on exchange rates imply nearly the opposite: the observation that exchange rates are approximately random walks implies that fluctuations in interest rates are associated with nearly one-for-one changes in ...
Staff Report , Paper 388

Report
Money and interest rates with endogeneously segmented markets

This paper analyses the effects of open market operations on interest rates in a model in which agents must pay a fixed cost to exchange assets and cash. Asset markets are endogenously segmented in that some agents choose to pay the fixed cost and some do not. When the fixed cost is zero, the model reduces to the standard one in which persistent money injections increase nominal interest rates, flatten the yield curve, and lead to a downward-sloping yield curve on average. In contrast, if markets are sufficiently segmented, then persistent money injections decrease interest rates, steepen or ...
Staff Report , Paper 260

Report
Time-varying risk, interest rates, and exchange rates in general equilibrium

Under mild assumptions, the data indicate that fluctuations in nominal interest rate differentials across currencies are primarily fluctuations in time-varying risk. This finding is an immediate implication of the fact that exchange rates are roughly random walks. If most fluctuations in interest differentials are thought to be driven by monetary policy, then the data call for a theory which explains how changes in monetary policy change risk. Here we propose such a theory based on a general equilibrium monetary model with an endogenous source of risk variation - a variable degree of asset ...
Staff Report , Paper 371

Working Paper
Search, self-insurance and job-security provisions

We construct a general equilibrium model to evaluate the quantitative effects of severance payments in the presence of contracting and reallocational frictions. Key elements of the model are: 1) establishment level dynamics, 2) imperfect insurance markets, and 3) variable search decisions. Contrary to previous studies that analyzed severance payments in frictionless environments, we find that severance payments reduce unemployment, produce negative insurance effects and improve levels.
Working Paper Series , Paper WP-98-2

Journal Article
Commentary on "organizational dynamics over the business cycle: a view on jobless recoveries"

Review , Volume 87 , Issue Jul

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