stabilization policy a reconsideration i introduction in 1936 keynes s general theory explained how fiscal and monetary policy could be used to end depressions since that time no developed country has ever seen a downturn on the scale of the 1930s the general theory was not just a how to book on the avoidance of depressions it was an argument for stabilization policy itself the years since the general theory have seen a revolt against keynesian economics in a revisionist mode milton friedman argued that countercyclical policy cannot affect the average level of unemployment and output robert lucas and thomas sargent 1979 went further contending that it is not only impossible to increase average output it is also impossible to stabilize it more recently lucas 1987 2003 has argued that policies to stabilize output even if effective would yield negligible welfare gains thus stabilization policy should not be a macroeconomic priority lucas s conclusion notwithstanding stabilization policy has long been an explicit or implicit objective of monetary policy in most industrial countries even including those countries with inflation targets the volatility of output has in fact declined in most major industrial countries since the mid 1980s and monetary policy arguably deserves at least partial credit see bernanke 2004 mirroring practice monetary policy research commonly takes it as given that along with price stability stabilization policy the minimization of squared deviations of output around potential is an appropriate policy objective see for example clarida et al 1999 in this article we explore the economic rationale for stabilization as a policy goal concluding that it does in fact deserve high policy priority we survey a large body of literature that critiques the validity of key assumptions in lucas s argument we also offer suggestive evidence that stabilization policy can significantly reduce average levels of unemployment by providing stimulus to demand in circumstances where unemployment is high but underutilization of labor and capital does little to lower inflation a monetary policy that vigorously fights high unemployment should however also be complemented by a policy that equally vigorously fights inflation when it rises above a modest target level the federal reserve act thus wisely enunciated price stability and maximum employment as twin goals for monetary policy ii the case against stabilization policy macroeconomic analysis typically assumes that social welfare depends negatively on both inflation above a modest target level here assumed zero and unemployment above some minimum socially efficient level for example a standard social welfare function is the discounted sum of period losses l sub t of the form see among others barro and gordon 1983 pp 592 93 1 l sub t a u sub t 1 k u sup 2 b pi sup 2 sub t where u sub t and pi sub t are the unemployment and inflation rates in period t and u sup is the natural rate of unemployment the coefficient k is positive reflecting the desirability of unemployment below the natural rate because real economies deviate in many respects from perfect competition the natural rate of unemployment is likely to exceed the socially optimal unemployment rate for example with monopolistic competition goods are underproduced because they are priced above marginal cost so potential output is inefficiently low and equilibrium unemployment is too high standard macroeconomic analysis additionally assumes that inflation is determined by an expectations augmented accelerationist phillips curve of the form 2 pi sub t pi sup e sub t f u sub t u sup epsilon sub t where pi sup e sub t is the expected inflation rate at time t with expectations formed at t 1 and epsilon sub t captures supply shocks to the phillips curve at t

a day in the city using conjoint choice experiments to model urban tourists choice of activity packages this paper introduces and tests a conjoint choice experiment approach to modeling urban tourists choice of activity packages the joint logit model is introduced as a tool to model choices between combinations of activities and an experimental design approach is proposed that includes attributes from multiple alternatives as well as interactions between attributes of different alternatives tests for possible differences in parameter values for attributes when introduced in different parts of the day are also supported the proposed approach was implemented and tested in a case study on dutch urban tourists choices of activity packages for a weekend in paris shopping and sightseeing were the activities evaluated most positively a number of significant interactions between choices of activities for different parts of the weekend was observed with a general preference for variation in activities and no significant interactions between choices of evening and daytime activities it was found that respondents in the case study did not evaluate activities differently depending on the period of the weekend in which they were introduced

the distributional implications of asymmetric income dynamics abstract income dynamics differ between groups of households defined by whether the head has university education or not and have changed asymmetrically in great britain since 2008 using a heterogeneous agent incomplete markets model we examine the quantitative implications of these differences for wealth inequality and for the distribution of conditional welfare losses within group wealth inequality is higher for the non university group and has increased since 2008 for both groups while between group inequality has also increased welfare losses are significantly higher for the non university educated since 2008 and are driven by both a greater fall in mean income and a larger rise in income risk non university educated households which had initial wealth below the median and net labour income in the lower quintiles suffered bigger losses social insurance policies beyond those currently in place can mitigate such welfare losses via tax and benefit redistributive mechanisms for the broad majority of households social insurance is valued more when it insures against the big adverse income shocks

time varying idiosyncratic risk and aggregate consumption dynamics abstract long term earnings losses for displaced workers are large and counter cyclical similarly the skewness of earnings growth rates is strongly pro cyclical this paper presents an incomplete markets business cycle model in which idiosyncratic risk varies over time in accordance with these empirical findings these dynamics of idiosyncratic risk give rise to a cyclical precautionary savings motive that substantially raises the volatility of aggregate consumption growth according to the model idiosyncratic risk spiked during the great recession leading to a substantial decline in aggregate consumption

cyclical dynamics in idiosyncratic labor market risk is individual labor income more risky in recessions this is a difficult question to answer because existing panel data sets are so short to address this problem we develop a generalized method of moments estimator that conditions on the macroeconomic history that each member of the panel has experienced variation in the cross sectional variance between households with differing macroeconomic histories allows us to incorporate business cycle information dating back to 1930 even though our data do not begin until 1968 we implement this estimator using household level labor earnings data from the panel study of income dynamics we estimate that idiosyncratic risk is i highly persistent with an annual autocorrelation coefficient of 0 95 and ii strongly countercyclical with a conditional standard deviation that increases by 75 percent from 0 12 to 0 21 as the macroeconomy moves from peak to trough

welfare cost of fluctuations when labor market search interacts with financial frictions we provide a quantitative assessment of welfare costs of fluctuations in a search model with financial frictions the matching process in the labor market leads positive shocks to reduce unemployment less than negative shocks increase it we show that the magnitude of this non linearity is magnified frictions this asymmetric effect of the business cycle leads to sizable welfare costs the model also accounts for the responsiveness of the job finding rate to the business cycle as financial frictions endogenously generate counter cyclical opportunity costs of opening a vacancy and wage sluggishness

the life cycle and the business cycle of wage risk cross country comparisons abstract we provide evidence on life cycle and business cycle fluctuations in the dispersion of household level wage innovations comparing the us the uk and germany first we find that household characteristics explain about 25 of the dispersion in wages within an age group in all three countries second the cross sectional variance of wages is almost linearly increasing in household age in all three countries but with increments being smaller in the european data third wage risk is procyclical in germany while it is countercyclical in the us and acyclical in the uk

asset pricing with idiosyncratic shocks this study shows the relationship between idiosyncratic shocks and expected returns on stock regarding theoretical and empirical results the dynamic stochastic general equilibrium is derived from idiosyncratic stochastic productivity level in production function of heterogenous firms to come up with a new asset pricing model given any state the main finding states that expected stock returns depends on the rate of time preference depreciation rate capital share expected idiosyncratic productivity level at time the percentage deviation of capital from steady state at time and the percentage deviation of labor from steady state at time in fact expected idiosyncratic productivity level expected capital and expected labor are the determinant factors that affect on expected stock returns eventually expected idiosyncratic stochastic productivity level is positively related to expected stock returns similar to expected labor in contrast expected capital has a negative effect on expected stock returns

weak instruments diagnosis and cures in empirical econometrics what is the weak instruments wi problem and what causes it universal agreement does not exist on these questions we define weak instruments by two features i two stage least squares 2sls analysis is badly biased toward the ordinary least squares ols estimate and alternative unbiased estimators such as limited information maximum likelihood liml may not solve the problem and ii the standard first order asymptotic distribution does not give an accurate framework for inference thus a researcher may estimate bad results and not be aware of the outcome the cause of wi is often stated to be a low r or f statistic of the reduced form equation in the most commonly occurring situation of one right handside endogenous variable we find the situation is more complex with an additional factor the correlation between the stochastic disturbances of the structural equation and the reduced form that needs to be taken into account we discuss in this paper a specification test hahn and hausman 2002a for wi a caution against using no moments estimators such as liml in the wi situation and suggestions for different estimators an approach to inference of frank kleibergen 2002 for wi we end with a caution of how small biases can become large biases in the wi situation we begin with the limited information structural model under the assumptions of hausman 1983

on the aggregate welfare cost of great depression unemployment abstract the potential benefit of policies that eliminate a small likelihood of economic crises is calculated an economic crisis is defined as an increase in unemployment of the magnitude observed during the great depression for the u s the maximum likelihood estimate of entering a depression is found to be about once every 83 years the welfare gain from setting this small probability to zero can range between 1 and 7 of annual consumption in perpetuity for most estimates more than half of these large gains results from a reduction in individual consumption volatility

the welfare cost of business cycles revisited finite lives and cyclical variation in idiosyncratic risk abstract this paper investigates the welfare costs of business cycles in a heterogeneous agent overlapping generations economy which is distinguished by idiosyncratic labor market risk aggregate variation arises both in terms of aggregate productivity shocks and countercyclical variation in the volatility of idiosyncratic shocks based on both aggregate data and microeconomic data from the panel study on income dynamics we find the welfare benefits of eliminating aggregate variation to be large an order of magnitude larger than those originally documented by lucas 1987 the key difference is countercyclical variation in idiosycratic risk which both amplifies the welfare cost of aggregate productivity shocks and imposes a cost of its own the magnitude of these effects increases non linearly in risk aversion our results therefore are consistent with the increasingly popular notion that distributional effects are an important aspect of understanding the welfare cost of business cycles

uninsured countercyclical risk an aggregation result and application to optimal monetary policy we consider an incomplete markets economy with capital accumulation and endogenous labor supply individuals face countercyclical idiosyncratic labor and asset risk we derive conditions under which the aggregate allocations and price system can be found by solving a representative agent problem this result is applied to analyze the properties of an optimal monetary policy in a new keynesian economy with uninsured countercyclical individual risk the optimal monetary policy that emerges from our incomplete markets economy is the same as the optimal monetary policy in a representative agent model with preference shocks when price rigidity is the only friction the optimal monetary policy calls for stabilizing the ination rate at zero

international interdependencies in fiscal stabilization policies abstract trade links imply that business cycle fluctuations are transmitted among trade partners to the extent that fiscal policy can mitigate business cycle fluctuations international interdependencies in stabilization policies arise we analyse in a two country general equilibrium model the role of fiscal policy in mitigating risk or providing implicit insurance in the presence of capital market imperfections and adjustment failures rigid wages it is shown that there is a welfare case for an active stabilization policy and that it is larger in the presence of adjustment failures rigid wages non cooperative policy decisions imply inefficiencies in fiscal stabilization policies which in the case of flexible wages may imply too much stabilization whereas stabilization is always insufficient in the case of rigid wages

asset bubbles and the cost of economic fluctuations lucas 1987 2003 estimates that the cost of economic fluctuations is low a social planner would pay no more than 0 1 of permanent consumption to eliminate all future business cycle fluctuations the current paper extends lucas calculations by studying the costs of fluctuations arising from asset bubbles we estimate two classes of costs consumption volatility due to asset bubbles in a representative agent economy and consumption volatility that arises because households have heterogeneous exposure to the bubble assets we show that the magnitude of welfare costs is primarily driven by the existence of heterogeneity our benchmark calibration implies that the asset bubbles of the last decade generated a social welfare cost equal to a permanent 3 reduction in the level of national consumption if assets are held proportionately across the population these welfare costs fall by an order of magnitude our calculations are sensitive to the details of the calibration including the degree of balance sheet and trading heterogeneity the coefficient of relative risk aversion and the magnitude of the asset bubble our preferred specifications generate welfare costs ranging from 1 to 10 of permanent national consumption

insurance and opportunities a welfare analysis of labor market risk abstract using a model with constant relative risk aversion preferences endogenous labor supply and partial insurance against idiosyncratic wage risk this paper provides an analytical characterization of three welfare effects a the welfare effect of a rise in wage dispersion b the welfare gain from completing markets and c the welfare effect from eliminating risk the analysis reveals an important trade off for these welfare calculations on the one hand higher wage uncertainty increases the cost associated with missing insurance markets on the other hand greater wage dispersion presents opportunities to raise aggregate productivity by concentrating market work among more productive workers welfare effects can be expressed in terms of the underlying parameters defining preferences and wage risk or alternatively in terms of changes in observable second moments of the joint distribution over individual wages consumption and hours

on the quantitative importance of market completeness abstract this paper quantitatively compares allocations in calibrated large overlapping generations growth models that only differ in their market structures for insuring against aggregate risk the findings are that the equilibrium behavior of aggregate variables is very similar across all market structures there are only minor differences the ratio of the volatility of aggregate consumption relative to that of investment is higher in complete market economies due partly to the higher volatility of consumption of older people it was also found that the risk premia in complete markets economies is basically zero therefore we can conclude that we can for the most part abstract from the issue of whether there exist markets for aggregate risk

income and wealth heterogeneity in the macroeconomy how do movements in the distribution of income and wealth affect the macroeconomy we analyze this question using a calibrated version of the stochastic growth model with partially uninsurable idiosyncratic risk and movements in aggregate productivity our main finding is that in the stationary stochastic equilibrium the behavior of the macroeconomic aggregates can be almost perfectly described using only the mean of the wealth distribution this result is robust to substantial changes in both parameter values and model specification our benchmark model whose only difference from the representative agent framework is the existence of uninsurable idiosyncratic risk displays far less cross sectional dispersion and skewness in wealth than u s data however an extension that relies on a small amount of heterogeneity in thrift does succeed in replicating the key features of the wealth data furthermore this extension features aggregate time series that depart significantly from permanent income behavior

insurance and opportunities the welfare implications of rising wage dispersion this paper develops a series of heterogeneous agents economies in order to characterize analytically the welfare implications of changes in the uncertainty in individual labor productivity we perform two types of welfare calculations first we compute the welfare consequences of a rise in labor market risk given a particular asset market structure complete markets incomplete markets autarky second we compute the expected gain from completing markets starting from autarky or incomplete markets for a given level of wage dispersion we are able to derive intuitive closed form expressions for these welfare eects which depend only on preference parameters and the size of the change in wage dispersion a higher level of productivity dispersion has always two eects it tends to reduce welfare in presence of partial insurance but it also tends to improve production opportunities in presence of flexible labor supply we can separate analytically the insurance and the opportunity components we quantify the welfare consequences of the rise in wage inequality observed in the united states over the past three decades as roughly 3 of lifetime consumption moreover we calculate that completing the asset markets given the current level of inequality would lead to a welfare improvement equivalent to 35 of lifetime consumption

ambiguity aversion asset prices and the welfare costs of aggregate fluctuations under the hypothesis that aggregate u s consumption is random and more importantly viewed as ambiguous by consumers we examine the implications for asset prices and for how consumption uctuations in uence consumer welfare first considering a simple mehra prescott style endowment economy with a representative agent facing consumption uctuations calibrated to match u s data we study to what extent ambiguity aversion can deliver asset prices that are consistent with data a high return on equity and a low return on riskfree bonds for some conflgurations of preference parameters a discount factor a degree of relative risk aversion and a measure of ambiguity aversion we flnd that it can we then use these parameter conflgurations to investigate how much consumers would be willing to pay to reduce endowment uctuations to zero thus delivering a lucas style welfare cost of uctuations these costs turn out to be very large consumers can be willing to pay over 10 of consumption in permanent terms

on measuring the welfare cost of business cycles lucas 1987 argues that the gain from eliminating aggregate fluctuations is trivial following lucas a number of researchers have altered assumptions on preferences and found that the gain from eliminating business cycles are potentially very large however in these exercises little discipline is placed on preference parameters this paper estimates the welfare cost of business cycles allowing for potential time non separabilities in preferences where discipline is placed on the choice of preference parameters by requiring that the preferences be consistent with observed fluctuations in a model of business cycles that is a theoretical real business cycle world is constructed and the representative agent is then placed in this world the agent responds optimally to exogenous shocks given the frictions in the economy the agent s preference parameters along with other structural parameters are estimated using a bayesian procedure involving markov chain monte carlo methods two main results emerge from the paper first the form for the time non separability estimated in this paper is very different than the forms suggested and used elsewhere in the literature second the welfare cost of business cycles is close to lucas s estimate

the un importance of unemployment fluctuations for the welfare cost of business cycles abstract this paper studies the cost of business cycles within a real business cycle model with search and matching frictions in the labor market we endogenously link both the cyclical fluctuations and the mean level of unemployment to the aggregate business cycle risk the key result of the paper is that business cycles are costly fluctuations over the cycle induce a higher average unemployment rate since employment is nonlinear in the job finding rate and the past unemployment rate we show this analytically for a special case of the model we then calibrate the model to u s data for the calibrated model too business cycles cause higher average unemployment the welfare cost of business cycles can easily be an order of magnitude larger than lucas s 1987 estimate the cost of business cycles is the higher the lower the value of nonemployment is or equivalently the lower is the disutility of work the ensuing cost of business cycles rises further when workers skills depreciate during unemployment

the time series properties of aggregate consumption implications for the costs of fluctuations the properties of the stochastic process followed by aggregate consumption affect the estimates of the costs of fluctuations this paper pursues two approaches to modeling consumption dynamics and measuring how much society dislikes fluctuations one statistical and one economic the statistical approach estimates the properties of consumption and calculates the costs of having consumption fluctuating around its mean growth the paper finds that persistence is a crucial determinant of the costs and that the high persistence in the data severely distorts conventional measures it shows how to compute valid estimates and confidence intervals the economic approach uses a calibrated model of optimal consumption and measures the costs of eliminating income shocks this uncovers a further cost of uncertainty through its impact on precautionary savings and investment the two approaches lead to costs of fluctuations that are higher than the common wisdom between 0 5 and 5 of per capita consumption jel e32 e21 e60

labor income dynamics and the insurance from taxes transfers and the family article i nfo what do labor income dynamics look like over the life cycle what is the relative importance of persistent shocks transitoryshocksandheterogeneousprofiles to what extent dotaxes transfers and thefamilyattenuate these various factors in the evolution of life cycle inequality in this paper we use rich norwegian population panel data to answer these important questions we let individuals with different education levels have a sepa rate income process and within each skill group we allow for non stationarity in age and time heterogeneous experience profiles and shocksof varying persistence we findthattheincomeprocesses differ systematically by age skill level and their interaction to accurately describe labor income dynamics over the life cycle it is neces sary toallow for heterogeneity by education levelsand account for non stationarity inage and time our findings suggest that the redistributive nature of the norwegian tax transfer system plays a key role in attenuating the magnitude and persistence of income shocks especially among the low skilled by comparison spouse s income matters less for the dynamics of inequality over the life cycle

emissions targets and the real business cycle intensity targets versus caps or taxes for reducing greenhouse gas emissions intensity targets are attracting interest as a flexible mechanism that would better allow for economic growth than emissions caps for the same expected emissions however the economic responses to unexpected productivity shocks differ using a real business cycle model we find that a cap dampens the effects of productivity shocks in the economy on all variables except for the shadow value of the emissions constraint an emissions tax leads to the same expected outcomes as a cap but with greater volatility certainty equivalent intensity targets maintain higher levels of labor capital and output than other policies with lower expected costs and no more volatility than with no policy

modeling earnings dynamics in this paper we use indirect inference to estimate a joint model of earnings employment job changes wage rates and work hours over a career we use the model to address a number of important questions in labor economics including the source of the experience profile of wages the response of job changes to outside wage offers and the effects of seniority on job changes we also study the dynamic response of wage rates hours and earnings to various shocks and measure the relative contributions of the shocks to the variance of earnings in a given year and over a lifetime we find that human capital accounts for most of the growth of earnings over a career although job seniority and job mobility also play significant roles unemployment shocks have a large impact on earnings in the short run as well as a substantial long term effect that operates through the wage rate shocks associated with job changes and unemployment make a large contribution to the variance of career earnings and operate mostly through the job specific error components of wages and hours

earnings inequality and the business cycle abstract economists have long viewed recessions as contributing to increasing inequality however this conclusion is largely based on data from a period in which inequality was increasing over time this paper examines the connection between long run trends and cyclical variation in earnings inequality we develop a model in which cyclical and trend inequality are related and find that in our model recessions tend to amplify long run trends i e they involve more rapidly increasing inequality when long run inequality is increasing and more rapidly decreasing inequality when long run inequality is decreasing in support of this prediction we present evidence that during the first half of the 20th century when earnings inequality was generally declining earnings disparities indeed appeared to fall more rapidly in downturns at least among workers at the top of the earnings distribution

exploring the income distribution business cycle dynamics abstract we document the business cycle behavior of the us income distribution and explore the extent to which unemployment spells and cyclically moving factor shares account for this behavior by analyzing four heterogeneous household extensions of the neoclassical growth model we conclude i that partitioning the population into five types subject to type specific employment processes seems to be enough to account for most aspects of the us income distribution business cycle dynamics ii that the role played by cyclically moving factor shares is small and iii that the income distribution business cycle dynamics may be essentially independent from the significant part of the observed wealth concentration that these model worlds fail to account for

the wealth distribution in bewley economies with capital income risk abstract we study the wealth distribution in bewley economies with idiosyncratic capital income risk we show analytically that under rather general conditions on the stochastic structure of the economy a unique ergodic distribution of wealth displays a fat tail

cost of business cycles with indivisibilities and liquidity constraints it is almost universally agreed that individuals face incomplete insurance markets and cannot perfectly insure against the idiosyncratic risk in this paper simple general equilibrium models with incomplete insurance markets are examined in order to assess the impact of imperfect insurance on the magnitude of the welfare costs of business cycles two versions of incomplete insurance markets are considered and certain statistical properties of the equilibrium stochastic processes in these environments are compared with those of a perfect insurance economy

the cost of business cycles and the stabilization value of unemployment insurance this paper o ers a new perspective on why labor market policies aimed at reducing the cost of business cycles may be warranted and how such policies can be designed in order to improve welfare to this end we develop a quantitative dynamic equilibrium model to illustrate how the contractual structure of the labor market may hide signi cant undiversi ed wage risk induced by aggregate uctuations the environment analyzed is such that the only imperfectly diversi ed risk workers bear is the risk of losing their job when the market for new contracts is depressed when we t the model to replicate the amount of wage variation estimated from micro data we obtain estimates of the potential value of stabilization policies that are substantially larger than those found in the literature we use this framework to examine several policy issues and in particular to show why state contingent unemployment insurance may dominate non contingent unemployment insurance schemes 2001 elsevier science b v all rights reserved jel classixcation e32 j41

on the welfare cost of economic fluctuations in developing countries macroeconomic fluctuations are much stronger in developing countries than in the united states yet while a large literature debates the welfare cost of economic fluctuations in the united states it remains an open question how large that cost is in developing countries using several models we provide such a measure we find that the welfare cost of consumption volatility per se is far from trivial and averages a substantial multiple of the corresponding u s estimate moreover in many poor countries the welfare gain from eliminating volatility may in fact exceed the welfare gain from an additional percentage point of growth forever

female labor supply as insurance against idiosyncratic risk in this paper we explore the role of female labor supply as an insurance mechanism against idiosyncratic earnings risk within the family we use a life cycle model in which a unitary family makes consumption saving and labor supply decisions additional uncertainty increases female participation rates this effect on participation is greatest when the ability to borrow and hence to smooth consumption is limited we calculate the welfare cost of increases in uncertainty and show that the welfare cost is greater when households are unable to adjust female labor supply jel j22 d91

the cost of business cycles under endogenous growth robert e lucas jr argued that the welfare gains from reducing aggregate consumption volatility are negligible subsequent work that revisited his calculation continued to find small welfare benefits further reinforcing the perception that business cycles do not matter this paper argues instead that fluctuations can affect welfare by affecting the growth rate of consumption i show that fluctuations can reduce growth starting from a given initial consumption which can imply substantial welfare effects as lucas himself observed empirical evidence suggests the welfare effects are likely to be substantial about two orders of magnitude greater than lucas original estimates

heterogeneous life cycle profiles income risk and consumption inequality was the increase in income inequality in the us due to permanent shocks or merely to an increase in the variance of transitory shocks the implications for consumption and welfare depend crucially on the answer to this question we use consumer expenditure survey cex repeated cross section data on consumption and income to decompose idiosyncratic changes in income into predictable life cycle changes transitory and permanent shocks and estimate the contribution of each to total inequality our model fits the joint evolution of consumption and income inequality well and delivers two main results first we find that permanent changes in income explain all of the increase in inequality in the 1980s and 1990s second we reconcile this finding with the fact that consumption inequality did not increase much over this period our results support the view that many permanent changes in income are predictable for consumers even if they look unpredictable to the econometrician consistent with models of heterogeneous income profiles