unemployment persistence is there evidence for stigma effects we present evidence for a highly significant interaction between state dependence in individual unemployment risk and the business cycle the disadvantage from having been unemployed in the previous period is smaller in times of relatively high unemployment and larger in times of low unemployment this is consistent with the existence of stigma effects in the sense that unemployed individuals face difficulties finding a new job because employers interpret unemployment as a negative signal and do so especially when it is easier to find jobs i e when unemployment is low

unemployment dynamics and duration dependence in france the netherlands and the united kingdom this paper analyzes unemployment dynamics in the french dutch and u k labor market it presents a method to distinguish between the effects of duration dependence and unobserved heterogeneity on the exit rate out of unemployment it turns out that for british male unemployed there is strong genuine negative duration dependence for french unemployed there is no strong duration dependence during the first year of unemployment while for dutch unemployed there is nonmonotonic duration dependence for all groups of french and dutch individuals significant unobserved heterogeneity is found for u k male unemployed heterogeneity seems to be empirically unimportant copyright 1994 by royal economic society

the british low wage sector and the employment prospects of the unemployed abstractare low wages a way for the unemployed to switch to higher paying jobs using data from the british household panel survey the labour market dynamics of unemployed low paid and higher paid employed men are analysed moreover the respective un employment duration and occupational skill level are accounted for results show that in general low wages significantly reduce the risk of future unemployment and increase the chances of ascending the salary ladder especially in the case of long term unemployment 360 days furthermore the occupational skill level has a substantial influence on the upward mobility of low paid jobs individuals working in the initial period in a low paid and higher skilled occupation have on average an 11 percentage points higher probability of entering higher pay compared to when working in a low paid and low skilled occupation

do employers use unemployment as a sorting criterion when hiring evidence from a field experiment the stigma associated with long term unemployment spells could create large inefficiencies in labor markets while the existing literature points toward large stigma effects it has proven difficult to estimate causal relationships using data from a field experiment we find that long term unemployment spells in the past do not matter for employers hiring decisions suggesting that subsequent work experience eliminates this negative signal nor do employers treat contemporary short term unemployment spells differently suggesting that they understand that worker firm matching takes time however employers attach a negative value to contemporary unemployment spells lasting at least nine months providing evidence of stigma effects

dynamic causality between the u s stock market the chinese stock market and the global gold market implications for individual investors diversification strategies this paper proposes a generalization of the prior var and egarch model to explore the linkage between returns and volatility transmissions in the u s stock market the chinese stock market and th

job search stigma effect and escape rate from unemployment this article formulates job search models incorporating certain types of the stigma effect of unemployment it is assumed that the probability of getting a job offer given the unemployment individual contacts the firm is influenced by the duration of unemployment and is justified in a signaling context the optimal search is analyzed for one sector as well as across several independent labor market segments it is shown that there are reasonably general conditions on the search environments for which both the individual reservation wage and escape rate are negative duration dependent a fact observed in empirical studies

how changes in labor demand affect unemployed workers this study analyzes the manner in which certain favorable shifts in labor demand affect job search although all shifts increase reservation wages they do not necessarily decrease expected unemployment spell durations and increase expected post unemployment wages so that upward sloping short run phillips curves may occur a result due to chamberlain is used to demonstrate that if the wage offer distribution is restricted to be logconcave two of the shifts guarantee downward sloping phillips curves for one of these two shifts previous research by flinn and heckman used logconcavity in a different manner to achieve properly shaped phillips curves

a real options model to evaluate the effect of environmental policies on the oil sands rate of expansion abstract canadian oil sands hold the third largest recognized oil deposit in the world while the rapidly expanding oil sands industry in western canada has driven economic growth the extraction of the oil comes at a significant environmental cost it is believed that the government policies have failed to keep up with the rapid oil sands expansion creating serious challenges in managing the environmental impacts this paper presents a practical yet financially sound real options model to evaluate the rate of oil sands expansion under different environmental cost scenarios resulting from governmental policies while accounting for oil price uncertainty and managerial flexibilities our model considers a multi plant multi agent setting in which labor costs increase for all agents and impact their optimal strategies as new plants come online our results show that a stricter environmental cost scenario delays investment but leads to a higher rate of expansion once investment begins once constructed a plant is highly unlikely to shut down our model can be used by government policy makers to gauge the impact of policy strategies on the oil sands expansion rate and by oil companies to evaluate expansion strategies based on assumptions regarding market and taxation costs

scar effects of unemployment an assessment of institutional complementarities this article uses panel data from the survey of income and program participation sipp and the european community household panel echp for a comparative analysis of workers post unemployment earnings trajectories in the united states and 12 western european countries across the study sample of industrialized countries results of difference in difference propensity score matching show post unemployment earnings losses to be largely permanent and particularly significant for high wage and older workers as well as for women the analyses also show that negative effects of unemployment on workers subsequent earnings are mitigated through either generous unemployment benefit systems or strict labor market regulation these effects stem partly from favorable behavioral responses that prevent downward occupational and industrial mobility and partly from changes in the overall structure of labor markets favoring the transferability of worker skills between jobs these positive effects materialize despite t

a socio economic model of stigma and related social problems abstract recent years have seen a rapid expansion of economic literature on stigma a notion that had been widely studied in sociology in relation to social deviance yet the economic literature overlooks the original sociological intuition that certain consequences of stigmatization could be socially inefficient this paper formalizes this intuition by developing a model of community behavior which mimics a classic sociological setting concerning the rehabilitation of a former criminal offender the conditions under which a socially inefficient equilibrium arises are derived some of those conditions are shown to be consistent with the findings from micro labor studies on crime

parallel search and information gathering many microeconomic problems fall into the following category a decision maker has a number n of opportunities or projects each project yields an unknown reward at an uncertain time and is characterized by an independent joint probability distribution once a project is selected its reward is revealed after a random time lag when it is collected the projects are selected sequentially in any order desired furthermore at any time a number m 1 m n of projects may be explored simultaneously that is in parallel the decision problem is to determine the sequential strategy for choosing the projects to maximize an objective which is a function of the rewards collected most of the problems in search theory dynamic allocation problems and many information gathering problems fall into this class a firm s problem of choosing technologies to develop products job search decision of workers price search of consumers development of resource pools exploration problems of mines and wells investment decisions and marketing strategies are but a few examples where the problem stated above is naturally applicable indeed the problem is basic to many imperfect information contexts and its analysis reveals useful insights into the nature of information acquisition and structures of markets the motivation for the study of parallel search and information gathering models is obvious in problems where information acquisition is costly and time consuming the returns to parallel effort are higher than when undertaking a single project at a time for example in research and development contexts if large improvements in information are possible at low cost in early stages of development then it becomes efficient to run several projects in parallel in scheduling and dynamic allocation applications where all projects must be undertaken parallel operation substantially reduces the overall completion time the instance of the problem when only one project can be chosen at a time m 1 has been studied extensively in recent economic literature in contrast there has been no significant attempt to study parallel selection of projects unfortunately the elegant results that may be derived for singleproject selection do not readily generalize to the parallel project case furthermore this problem in principle may be formulated in a dynamic programming framework and solved through standard techniques such as backward induction or fixed point methods however in most actual cases this approach besides shedding little economic insight would be a combinatorially complex task of formidable proportions unless n and m are small hence there is a need to study the effectiveness of meaningful operational rules the purpose of this paper is to point out that simple ordering rules are obtained for the optimal parallel selection of projects under reasonably general and meaningful conditions these conditions may be stated in terms of risks and stochastic orderings of the distributions associated with the projects the problem of single project selection m 1 falls into the general class of bandit processes see the works of j c gittens 1979 and others the solution for which is usually characterized by a reservation rule each project is assigned a reservation number or an index analogous to internal rate of return depending only on the features of that project and independent of all other projects at each decision instant the project with the highest reservation number is selected these reservation numbers as department of economics and center for urban affairs and policy research northwestern university evanston il 60201 research supported by nsf grant ses 8708325

on the effects of ranking by unemployment duration abstract we propose a theory based on the firm s hiring behavior that rationalizes the observed significant decline of callback rates for an interview and exit rates from unemployment and the mild decline of reemployment wages over unemployment duration we build a directed search model with symmetric incomplete information on worker types and non sequential search by firms sorting due to firms testing of applicants in the past makes expected productivity fall with duration which induces firms to rank applicants by duration in equilibrium callback and exit rates both fall with unemployment duration in our numerical exercise using u s data we show that our model can replicate quite well the observed falling patterns with the firm s ranking decision accounting for a sizable part

declining reservation wages and learning empirical studies of job search strongly suggest that the reservation wages of unemployed job seeking individuals decline with the length of their respective unemployment spells previous explanations of this behaviour based on age effects liquidity constraints and limited unemployment benefits are not adequate we provide a new answer to this question based on the reasonable assumption that workers do not have precise knowledge of the distribution of the prevailing wages an individual model of job search and learning is formulated it is shown that the declining trend of reservation wages naturally arises due to the selection process when search costs are not too small the example of a normal wage offer distribution is analysed and the implications are discussed

costly search with adverse selection solicitation curse versus acceleration blessing we analyze a dynamic trading model of adverse selection where a seller can increase the frequency of strategic price quotes a low quality seller benefits more from trade and therefore searches more intensively than a high quality seller this makes a seller s contact carry negative information but a seller s availability become a stronger indicator of high quality in the stationary environment the two effects exactly offset each other and reducing search costs is weakly beneficial to the seller in the nonstationary environment the relative strengths of the two effects vary over time and reducing search costs can be detrimental to the seller

statistical discrimination and duration dependence in the job finding rate this article models a frictional labour market where employers endogenously discriminate against the long term unemployed the estimated model replicates recent experimental evidence which documents that interview invitations for observationally equivalent workers fall sharply as unemployment duration progresses we use the model to quantitatively assess the consequences of such employer behaviour for job finding rates and long term unemployment and find only modest effects given the large decline in callbacks interviews lost to duration impact individual job finding rates solely if they would have led to jobs we show that such instances are rare when firms discriminate in anticipation of an ultimately unsuccessful application discrimination in callbacks is thus largely a response to dynamic selection with limited consequences for structural duration dependence and long term unemployment

heterogeneity and unemployment dynamics many previous articles have studied the contribution of inflows and outflows to the cyclical variation in unemployment but ignored the critical role of unobserved heterogeneity across workers thi

duration dependence and labor market conditions evidence from a field experiment this article studies the role of employer behavior in generating negative duration dependence the adverse effect of a longer unemployment spell by sending fictitious resumes to real job postings in 100 u s cities our results indicate that the likelihood of receiving a callback for an interview significantly decreases with the length of a worker s unemployment spell with the majority of this decline occurring during the first eight months we explore how this effect varies with local labor market conditions and find that duration de pendence is stronger when the local labor market is tighter this result is consistent with the prediction of a broad class of screening models in which employers use the unemployment spell length as a signal of unobserved productivity and recognize that this signal is less informative in weak labor markets jel code j64

estimating incentive and welfare effects of nonstationary unemployment benefits the distribution of unemployment duration in our equilibrium matching model with spell dependent unemployment benefits displays time varying exit rates building on semi markov processes we translate these rates into an expression for the aggregate unemployment rate structural estimation using german microdata allows us to discuss the effects of an unemployment benefit reform hartz iv the reform reduced unemployment by less than 0 1 percentage points contrary to general beliefs the net wage for most skill and regional groups increased taking the insurance effect of unemployment benefits into account however the reform is welfare reducing for 76 of workers

competition between employed and unemployed job applicants swedish evidence we use the swedish applicant database to investigate empirically whether being unemployed per se reduces the probability of getting contacted by a firm all searchers looking for a new job are invited to submit their personal details to this database over the internet since we have access to exactly the same information as the firms we can minimize the problems associated with unobserved heterogeneity our results show that an unemployed applicant faces a lower contact probability than an otherwise identical employed applicant thus supporting the notion that firms view employment status as a signal of productivity

the anatomy of unemployment dynamics abstract this paper examines the relation between individual unemployment durations and incidence inflow size on the one hand and the time varying macroeconomic conditions in the economy on the other we develop a model for the analysis of aggregate unemployment incidence and duration data and estimate this model on quarterly french data over the period 1982 1994 stratified by sex we find upward trends in both incidence and durations the former is relatively important for females the latter for males male incidence and durations are countercyclical with only a minor role for cohort effects on durations in contrast female cohorts entering at the top of the cycle have relatively short unemployment spells and the female incidence is if anything procyclical there is strong seasonal variation in particular in the incidence finally we find relatively small non monotonic individual duration dependence in the first six quarters of unemployment unobserved heterogeneity explains the observed negative duration dependence at these durations we provide some evidence that negative individual duration dependence and not heterogeneity is important at higher durations

is there less discrimination in occupations where recruitment is difficult the authors empirically test the cross sectional relationship between hiring discrimination and labor market tightness at the level of the occupation to this end they conduct a correspondence tes

ethnic discrimination in hiring labour market tightness and the business cycle evidence from field experiments several studies using observational data suggest that ethnic discrimination increases in downturns of the economy we investigate whether ethnic discrimination depends on labour market tightness us

the duration of unemployment as a signal abstract a model is studied in which the unemployment duration of job applicants affects firms hiring decisions the equilibrium wage offered to applicants is decreasing in their unemployment duration a fraction of the workers whose unemployment spell exceeds a critical length withdraws from the labor market

stigma effects of nonemployment i introduction it is well known that longer durations of past nonemployment are associated with longer durations of future nonemployment 1 two explanations have been offered in the literature to interpret this phenomenon heterogeneity and the effect of workers employment histories the heterogeneity explanation argues that individuals differ in certain observed and unobserved characteristics and that these differences affect the duration of their periods of nonemployment however these individuals are unaffected by the mere experience of nonemployment because individuals with longer spells of nonemployment in the past are more likely to have characteristics that make them remain nonemployed they are likely to experience longer spells of nonemployment than others in the future the work history explanation argues that the mere experience of longer spells of nonemployment in the past raises the chance of longer spells of nonemployment in the future two theoretical explanations have been offered to explain this structural relationship human capital decay and stigma human capital decay suggests that nonemployed workers lose vital work experience and on the job training or suffer from human capital decay that reduces their future employability stigma suggests that potential employers infer the unobserved components of the workers quality from their history of employment and nonemployment in particular past nonemployment sends a negative signal to potential employers that lowers the probability of future reemployment 2 the ability to distinguish between heterogeneity and the effect of work history is a crucially important policy issue if the observed correlation between the duration of successive nonemployment spells reflects heterogeneity across individuals then a given individual enjoys the same chance of reemployment no matter how long or short his periods of past nonemployment have been in this case chronic nonemployment is a problem of a population subgroup and traditional training programs targeted toward the chronically nonemployed would be an appropriate policy tool moreover the programs could be targeted at individuals with the characteristics associated with a high risk of chronic nonemployment however if the observed correlation reflects the effect of work history anyone who happens to have experienced long periods of nonemployment in the past has a high probability of experiencing long periods of nonemployment in the future thus phelps 1972 argues that short term macroeconomic policies that alleviate unemployment will also lower aggregate unemployment rates in the long run 3 i argue however that an appropriate policy depends on the cause of the work history effect if the effect reflects human capital decay then short term macroeconomic policies to alleviate unemployment and traditional government training programs to help the unemployed restore lost skills are appropriate if the effect reflects stigma active short term macroeconomic policies may not be necessary to lower aggregate unemployment rates in the long run because stigma effects are likely to be weaker when nonemployment is experienced during a severe recession than when it is experienced during a moderate recession an appropriate policy would aim at aiding the flow of accurate information on the quality of stigmatized workers in the private sector for instance the government might subsidize potential private sector employers costs of screening job applicants who established poor work histories during a period of moderate recession alternatively it might sponsor private sector internship and training programs for such workers 4 although both the duration and frequency of nonemployment determine the individual s nonemployment rate the duration is empirically far more important than the frequency 5 because an understanding of the determinants of the duration of nonemployment is crucial to both economic theory and policymaking an enormous number of empirical studies have addressed the issue

unemployment dynamics and duration dependence a major issue in the analysis of unemployment durations concerns distinguishing genuine duration dependence of the exit rate out of unemployment from unobserved heterogeneity we present a method for the nonparametric estimation of both phenomena designed to be applicable to time series data on aggregate outflows from different duration classes the model explicitly takes into account that individual exit rates are affected by the business cycle and by seasonal effects the method is applied to u s data we find diverging duration effects among black and white individuals however except for white males duration dependence is dominated by unobserved heterogeneity

the effects of unemployment and underemployment on employment opportunities results from a correspondence audit of the labor market for college graduates the authors use data from a resume audit to estimate the impact of unemployment and underemployment on the employment prospects of recent college graduates they find no statistical evidence linking unemployment spells of different durations to employment opportunities by contrast college graduates who are underemployed have callback rates that are 30 lower than those of applicants who are adequately employed the null effects associated with unemployment and the adverse effects associated with underemployment are robust across cities with relatively tight and loose labor market conditions internship experience obtained while completing one s degree substantially reduces the negative effects of underemployment the data support the proposition that employers view underemployment as a strong signal of lower expected productivity