the role of capital and labour in shaping the environmental effects of fiscal stimulus abstract although the macroeconomic consequences of short term fiscal stimulation packages have been thoroughly analysed in the literature still relatively little is known about their environmental effects we discuss an important channel through which short run expansionary fiscal policy influences greenhouse gas emissions we show that fiscal policy exerts its impact not only by increasing general level of economic activity but also by changing the composition of factors of production capital and labour using the dynamic stochastic general equilibrium model of economy we demonstrate that fiscal expansion results in a shift from capital intensive to more labour intensive technologies our panel study proves that the latter tends to be associated with lower emissions of greenhouse gases per unit of production hence our analysis demonstrates that an extensive use of fiscal stimulus during recessions can significantly reduce the environmental burden of the additional units of gdp

the empirical content of the roy model this paper clarifies and extends the classical roy model of self selection and earnings inequality the original roy model based on the assumption that log skills are normally distributed is shown to imply that pursuit of comparative advantage in a free market reduces earnings inequality compared to the earnings distribution that would result if workers were randomly assigned to sectors aggregate log earnings are right skewed even if one sectoral distribution is left skewed most major implications of the log normal roy model survive if differences in skills are log concave however few implications of the model survive if skills are generated from more general distributions we consider the identifiability of the roy model from data on earnings distributions the normal theory version is identifiable without regressors or exclusion restrictions sectoral distributions can be identified knowing only the aggregate earnings distribution for general skill distributions the model is not identified and has no empirical content with sufficient price variation the model can be identified from multimarket data cross sectional variation in regressors can substitute for price variation in restoring empirical content to the roy model

wage rigidity in canadian collective bargaining agreements the authors search information on the provisions of 10 947 wage contracts signed in the canadian unionized sector between 1976 and 1999 for evidence of downward nominal wage rigidity the disinclination of wages to fall in nominal dollars below their established level over the sample period real wage reductions were common but nominal wage reductions were rare the probability of downward nominal wage rigidity increased substantially during low inflation periods during such periods apparently there was no reduction in the incidence of real wage cuts but the magnitude of those cuts was modest suggesting a lesser ability of wages to adjust to labor market conditions than at other times

household saving micro theories and micro facts in this survey we review the recent theoretical and empirical literature on household saving and consumption the discussion is structured around a list of motives for saving and how well the standard theory captures these motives we show that almost all of the motives for saving that have been suggested in the informal saving literature can be captured in the standard optimizing model particular attention is given to recent work on the precautionary motive and its implications for saving and consumption behavior we also discuss the behavioral or psychological approach that eschews the use of standard optimization techniques and focuses instead on direct consideration on saving we provide a section on facts who save and how much we then discuss informally the recent decline in the u s saving rate and whether the theory is of much use in understanding this and other changes in aggregate saving rates over time we do not find any convincing explanation for the change in saving rates we also discuss some analyses of saving behavior over the life cycle addressing such questions as whether households save enough for retirement and whether the consumption patterns of older households can be rationalized within a simple life cycle model we also review a great number of studies of the consumption euler equations based on our analysis of the studies cited we conclude that there is still mixed evidence that consumption is excessively sensitive to income we also examine in depth the recent empirical literature on the precautionary motive we conclude that although some households do seem to have a significant precautionary motive at some points in their life cycle this motive is not so strong empirically as some investigators suggest

wage rigidity and job creation recent research in macroeconomics emphasizes the role of wage rigidity in accounting for the volatility of unemployment fluctuations we use worker level data from the cps to measure the sensitivity of wages of newly hired workers to changes in aggregate labor market conditions the wage of new hires unlike the aggregate wage is volatile and responds almost one to one to changes in labor productivity we conclude that there is little evidence for wage rigidity in the data

real wages over the business cycle evidence from panel data one topic on which keynes did not disagree with classical economists was the cyclical behavior of real wages keynes 1936 as well as various classical writers predicted that real wages should move countercyclically quoting the general theory p 17 in general an increase in employment can only occur through the accompaniment of a decline in real wages thus i am not disputing this vital fact which the classical economists have rightly asserted as indefeasible this prediction is based on the premise of competition and a given short run capital stock increases in employment then correspond to more intensive use of capital and through diminishing product lower real wages for this reason evidence by dunlop 1938 and tarshis 1939 that real wages move procyclically was viewed as paradoxical both dunlop and tarshis based their findings on an observed positive correlation between real and money wages which given the procyclical movement of money wages implies a positive correlation between

wage adjustment in the great recession and other downturns evidence from the united states and great britain using 1979 2012 cps data for the united states and 1975 2012 nes data for great britain we study wage behavior in both countries with particular attention to the great recession real wages are procyclical in both countries but the procyclicality of real wages varies across recessions and does so differently between the two countries in ways that defy simple explanations we devote particular attention to the hypothesis that downward nominal wage rigidity plays an important role in cyclical employment and unemployment fluctuations we conclude that downward wage rigidity may be less binding and have lesser allocative consequences than is often supposed

evidence on the validity of cross sectional and longitudinal labor market data this article investigates error properties of survey reports of labor market variables we use the panel study of income dynamics psid validation study a two wave panel survey of workers employed by a large firm that shared its detailed payroll records individuals reports of annual earnings are fairly accurate errors are negatively related to true earnings reducing bias due to measurement error when earnings are used as an independent variable biases are moderately larger for changes in earnings earnings per hour are less reliably reported than annual earnings biases in estimating earnings functions are relatively small but those in labor supply functions may be important

estimating labour supply responses using tax reforms the 1980 s tax reforms and the changing dispersion of wages offer one of the best opportunities yet to estimate labor supply effects nevertheless changing sample composition aggregate shocks the changing composition of the tax paying population and discontinuities in the tax system create serious identification and estimation problems we develop grouping estimators that address these issues our results reveal positive and moderately sized wage elasticities we also find negative income effects for women with children

nominal wage rigidity and the rate of inflation using the accurate and extensive data available in the uk new earnings survey this paper investigates the extent to which nominal wages are downwardly rigid and whether such rigidity interferes with necessary real wage adjustments when inflation is low despite the substantial numbers of individuals whose nominal wages fall from one year to the next we find that if long run inflation is one percent higher the number of individuals with negative real pay growth increases by around 1 4 percent this is controlling for the median and dispersion of the real wage change distribution

some implications of antitrust laws for cartel pricing abstract price dynamics are characterized for a price fixing cartel antitrust laws reduce cartel prices even though cartel detection occurs with probability zero in response to cheating the non collusive price gradually moves from the collusive price to the static nash equilibrium price

monetary policy shocks what have we learned and to what end this paper reviews recent research that grapples with the question what happens after an exogenous shock to monetary policy we argue that this question is interesting because it lies at the center of a particular approach to assessing the empirical plausibility of structural economic models that can be used to think about systematic changes in monetary policy institutions and rules the literature has not yet converged on a particular set of assumptions for identifying the effects of an exogenous shock to monetary policy nevertheless there is considerable agreement about the qualitative effects of a monetary policy shock in the sense that inference is robust across a large subset of the identification schemes that have been considered in the literature we document the nature of this agreement as it pertains to key economic aggregates

downward nominal wage rigidity in canada evidence from micro level data we assess the importance of downward nominal wage rigidity dnwr in canada using both firm and worker level microdata in particular we analyze employer level administrative data from the major wage settlements mws and household based survey data from the survey of labour income dynamics slid

downward wage rigidity in italy micro based measures and implications using the 1985 99 whip data we find a sizable amount of downward wage rigidity in italy with a prevalence of real over nominal rigidity the results hold when real rigidity is identified either with reference to collective bargaining dispositions or to price inflation consistently with the labour market reforms of the early 1990s downward rigidities have become less important over time with the reduction in real rigidities more than offsetting the rise in nominal rigidities we also find that downward wage rigidities are positively related to labour reallocation and local unemployment rates hinting at the macroeconomic relevance of our estimates

estimation of limited dependent variable models with dummy endogenous regressors applied economists have long struggled with the question of how to accommodate binary endogenous regressors in models with binary and nonnegative outcomes i argue here that much of the difculty with limited dependent variables comes from a focus on structural parameters such as index coefcients instead of causal effects once the object of estimation is taken to be the causal effect of treatment several simple strategies are available these include conventional two stage least squares multiplicative models for conditional means linear approximation of nonlinear causal models models for distribution effects and quantile regression with an endogenous binary regressor the estimation strategies discussed in the article are illustrated by using multiple births to estimate the effect of childbearing on employment status and hours of work

causal parameters and policy analysis in economics a twentieth century retrospective the major contributions of twentieth century econometrics to knowledge were the definition of causal parameters within well defined economic models in which agents are constrained by resources and markets and causes are interrelated the analysis of what is required to recover causal parameters from data the identification problem and clarification of the role of causal parameters in policy evaluation and in forecasting the effects of policies never previously experienced this paper summarizes the development of these ideas by the cowles commission the response to their work by structural econometricians and var econometricians and the response to structural and var econometrics by calibrators advocates of natural and social experiments and by nonparametric econometricians and statisticians this paper considers the definition and identification of causal parameters in economics and their role in econometric policy analysis it assesses different research programs designed to recover causal parameters from data at the beginning of this century economic theory was mainly intuitive and empirical support for it was largely anecdotal at the end of the century economics has a rich array of formal models and a high quality database empirical regularities motivate theory in many areas of economics and data are routinely used to test theory many economic theories have been developed as measurement frameworks to suggest what data should be collected and how they should be interpreted econometric theory was developed to analyze and interpret economic data most econometric theory adapts methods originally developed in statistics the major exception to this rule is the econometric analysis of the identification problem and the companion analyses of structural equations causality and economic policy evaluation although an economist did not invent the phrase correlation does not imply causation 1 economists clari

the unemployment volatility puzzle is wage stickiness the answer i discuss the failure of the canonical search and matching model to match the cyclical volatility in the job finding rate i show that job creation in the model is influenced by wages in new matches i summarize microeconometric evidence and find that wages in new matches are volatile and consistent with the model s key predictions therefore explanations of the unemployment volatility puzzle have to preserve the cyclical volatility of wages i discuss a modification of the model based on fixed matching costs that can increase cyclical unemployment volatility and is consistent with wage flexibility in new matches

the responsiveness of industry wages to low frequency shocks in canada the first objective of this paper is to examine the empirical relationship between low frequency shocks to labour demand and average wages on an industrial basis using a canadian longitudinal data set we estimate a fixed effects model that controls for workers unobservable attributes the second major objective is to extend the existing industry based literature by estimating a specification allowing for a comparison between the degree of wage responsiveness of within firm stayers and between firm movers the findings indicate that average wages by industry tend to respond positively to low frequency changes in employment and that there is some degree of wage flexibility within firm worker matches jel classification j3 j62 la reponse des salaires industriels a des chocs peu frequents au canada le premier objectif de ce memoire est d examiner la relation empirique entre des chocs peu frequents dans la demande de travail et les salaires moyens au niveau de l industrie a l aide d une base de donnees longitudinales pour le canada on calibre un modele a effets fixes qui tient compte des attributs non observables de travailleurs le second objectif est d enrichir la litterature au niveau de l industrie en calibrant une specification du modele qui permet une comparaison entre le degre de reaction des salaires pour ceux qui restent dans leur entreprise et ceux qui se deplacent entre entreprises les resultats indiquent que les salaires moyens par industrie tendent a repondre positivement a des changements peu frequents dans l emploi et qu il y a un certain degre de flexibilite des salaires pour les travailleurs

downward nominal wage rigidity in services direct evidence from a firm survey abstract the paper uses a new german employer survey on wage setting to analyze incidence and sources of nominal wage rigidity in services vs manufacturing mainly for fear of excess worker turnover wage cuts are significantly less frequent in services

downward nominal wage rigidity in canada evidence against a greasing effect la rigidite a la baisse des salaires nominaux rbsn a souvent ete invoquee pour justifier le ciblage d un taux d inflation positif il est communement admis qu une inflation positive peut en exercant une pression a la baisse sur les salaires reels huiler les rouages du marche du travail et faciliter les ajustements de ce marche durant les recessions

substitution and dropout bias in social experiments a study of an influential social experiment this paper considers the interpretation of evidence from social experiments when persons randomized out of a program being evaluated have good substitutes for it and when persons randomized into a program drop out to pursue better alternatives using data from an experimental evaluation of a classroom training program we document the empirical importance of control group substitution and treatment group dropping out evidence that one program is ineffective relative to close substitutes is not evidence that the type of service provided by all of the programs is ineffective although that is the way experimental evidence is often interpreted

nominal wage rigidities in mexico evidence from social security records abstract this paper analyzes the existence and extent of downward nominal wage rigidities in the mexican labor market using data from the administrative records of the mexican social security institute imss this establishment level panel dataset allows us to track workers employed with the same firm observe their wage profiles and calculate the nominal wage changes they experience over time based on the estimated density functions of nominal wage changes we are able to calculate some standard tests of nominal wage rigidity that have been proposed in the literature furthermore we extend these tests to take into account the presence of minimum wage laws that may affect the distribution of nominal wage changes the densities and tests calculated using these data are similar to those obtained using administrative data from other countries and constitute a significant improvement over the measures of nominal wage rigidities obtained from household survey data we document the importance of minimum wages in the mexican labor market as evidenced by the large fraction of minimum wage earners and the indexation of wage changes to the minimum wage increases we find considerably more nominal wage rigidity than previous estimates obtained for mexico using data from the national urban employment survey eneu suggest but lower than that reported for developed countries by other studies that use comparable data

downward nominal wage flexibility real or measurement error this paper presents a new method to correct for measurement error in wage data and applies this method to address an old question how much downward wage flexibility is there in the united states we apply standard methods developed by bai and perron to identify structural breaks in time series data applying these methods to wage histories allows us to identify when each person experiences a change in nominal wages the length of the period of constant nominal wages is left unrestricted and is allowed to differ across individuals as are the size and direction of the nominal wage change we apply these methods to data from the survey of income and program participation the evidence we provide indicates that the probability of a cut in nominal wages is substantially overstated in data that are not corrected for measurement error