dynamic programming model estimates of social security disability insurance application timing this paper develops a dynamic programming model of the social security disability insurance ssdi application timing decision we estimate the time to application from the point at which a health condition first begins to affect the kind or amount of work that a currently employed person can do we use health and retirement study hrs and restricted access social security earnings data for estimation our results show that the type of work limiting health condition presence of employer accommodation and the relative value of income in the application state to income in the work state significantly affect the timing of ssdi application copyright 2004 john wiley sons ltd

a natural experiment on sick pay cuts sickness absence and labor costs abstract this study estimates the reform effects of a reduction in statutory sick pay levels on sickness absence behavior and labor costs german federal law reduced the legal obligation of german employers to provide 100 continued wage pay for up to six weeks per sickness episode in 1996 statutory sick pay was decreased to 80 of foregone gross wages within the reform s target group private sector employees this measure increased the proportion of employees having zero days of absence between 6 and 8 quantile regression estimates indicate that employees with up to 5 5 annual absence days reduced their days of absence by about 12 extended analyses suggest that in industries that enforced the cut behavioral effects were about twice as large we show that the direct labor cost savings effect stemming from the cut in replacement levels clearly exceeds the indirect effect due to the decrease in absenteeism our calculations about the total decrease in labor costs are very much in line with official data which suggest that total employer provided sick pay decreased by 6 7 or 1 7 billion per year

assessing the effect of public policy on worker absenteeism we analyze the effect of economic incentives on worker absenteeism using panel data on work absence for 1990 and 1991 with a sample of 1 396 swedish blue collar workers during this period sweden implemented major reforms of both its national income replacement program for short term sickness and income taxes both affected the worker s cost of missing work our econometric model allows for state dependent dynamic behavior and control for unobserved heterogeneity the latter proves to be an important consideration we find that the cost of being absent significantly affects work absence behavior

worktime regulations and spousal labor supply we study interdependencies in spousal labor supply by exploiting the design of the french workweek reduction which introduced exogenous variation in one s spouse s labor supply at constant earnings treated employees work on average two hours less per week husbands of treated women respond by reducing their labor supply by about half an hour consistent with substantial leisure complementarity and specifically cut the non usual component of their workweek leaving usual hours unchanged women s response to their husband s treatment is instead weak and rarely statistically significant possibly due to heavier constraints in the organization of their workweek

the effect of local competition on admission prices in the u s motion picture exhibition market abstract this paper provides empirical evidence on the relationship between local market structure and the prices charged to consumers in the u s motion picture exhibition market i find that there is a statistically significant relationship between the geographic distribution of movie theaters in a market and the admission prices that they are able to charge however the magnitude of the price reducing effect of local competition appears to be economically modest moreover i find no evidence that increases in geographic concentration lead to increased adult admission prices the findings are directly relevant to merger policy in the industry and pertinent because of the dramatic changes in industry structure resulting from mergers that occurred during 2002 i conclude that the available evidence suggests that popular and governmental concerns about horizontal mergers in the industry leading to dramatically increased admission prices are likely misplaced

absenteeism efficiency wages and shirking we investigate the absence behaviour of workers when there is asymmetric information regarding worker health an individual s health is assumed to be private information to that individual and only observable to a third party at cost our aim is to complement the existing largely empirical studies of absence behaviour which have tended to treat the phenomenon exclusively as a labour supply decision on the part of workers cf allen 1981 barmby and treble 1991 barmby orme and treble 1991 and dunn and youngblood 1986 our approach is to draw out the interactive aspects of the employment relationship we assume that workers are ex ante uncertain as to their state of health and supply labour on the basis of an all or nothing utility maximising decision taken once a realisation of this state has been received utility is a function of income leisure and health and workers value leisure more the sicker they are firms are able to exert some control over individual behaviour by monitoring workers and threatening to fire shirkers that is workers absenting themselves with unacceptable sickness our model highlights an efficiency wage effect through which wages may be used as a method of absence control in particular the optimal response of the firm to an increase in the cost of monitoring is to discourage shirking by raising wages furthermore to the extent that

work environment and individual background explaining regional shirking differentials in a large italian firm the prevalence of shirking within a large italian bank appears to be characterized by significant regional differentials in particular absenteeism and misconduct episodes are substantially more prevalent in the south we consider a number of potential explanations for this fact different individual backgrounds group interaction effects sorting of workers across regions differences in local attributes different hiring policies and discrimination against southern workers our analysis suggests that individual backgrounds group interaction effects and sorting effects contribute to explaining the north south shirking differential none of the other explanations appears to be of first order importance i introduction whether individual behavior is determined by group interactions or by individual background is undoubtedly a fundamental question for the social sciences this question presented itself forcefully when we stumbled onto the following piece of evidence there appear to be significant regional differentials in the prevalence of shirking among the employees of a large italian bank in particular absenteeism and misconduct episodes are considerably more frequent in the southern branches of the bank in this paper we examine several potential explanations for this fact first individual preferences for shirking versus working may differ according to one s region of hirth we will refer to this hj othesis as one of different individual hackgrounds the second possibility is one of locational sorting low shirking types may tend to migrate to the north high shirking types may tend to migrate to the south or hoth third the northern and southern

disability insurance benefits and labor supply a critical input for assessing the optimal size of disability insurance programs is the elasticity of labor force participation with respect to the generosity of benefits unfortunately this parameter has been difficult to estimate in the context of the u s disability insurance program since all workers face an identical benefits schedule i surmount this problem by studying the experience of canada which operates two distinct disability insurance programs for quebec and for the rest of canada the latter program raised its benefits by 36 percent in january 1987 whereas benefits in quebec were constant i find a sizable labor supply response to the policy change my central estimates imply an elasticity of labor force nonparticipation with respect to disability insurance benefits of 0 28 0 36

estimating price elasticities of convalescent care programmes this study is the first to estimate price elasticities of demand for convalescent care programmes in 1997 the german legislature more than doubled the daily co payments for the publicly insured from 6t o 13 the measure caused the overall demand for convalescent care treatments to fall by 20 to 25 i estimate the price elasticity for medical rehabilitation programmes aimed at preventing work disability to be about 0 3 whereas the elasticity for medical rehabilitation programmes for recovery from accidents at work lies around 0 5 the demand for preventive treatment at health spas is elastic and less than 1 how does the demand for medical care change when prices change since the early days of the profession of health economics the question of the price elasticity for health services has been central joseph p newhouse one of the founders of the field of health economics has published more than 100 articles alone on health care demand newhouse was also the leader of the rand group that designed and directed the famous rand health insurance experiment that focused on the impact of costsharing on the demand for medical care not only newhouse but also many other economists have devoted a great deal of attention to this topic

business cycles and the relationship between concentration and price cost margins using a newly constructed panel data base we examine changes in price cost margins in 284 manufacturing industries between 1958 and 1981 a key finding is a dramatic narrowing of the spread between the margins of concentrated and unconcentrated industries over this period we provide evidence that this narrowing is a result of the greater sensitivity of price cost margins in more concentrated industries to demand fluctuations this finding is robust to the inclusion of other industry variables and to measures of import competition the results indicate that cross sectional estimates of the concentration margins relationship are likely to be both biased and misleading

mergers in the food retailing sector an empirical investigation abstract we address the problem of merger evaluation for competition policy purposes in the retailing sector the likely effects of a possible merger are analysed ex ante the novelty of the paper lies in the inclusion of downstream and upstream market power effects on the retailers also it provides an empirical application to the portuguese food retailing market the effects of additional concentration on prices are estimated as well as the price reduction insiders are likely to obtain via an improved bargaining position the final effect on prices depends on how these cost reductions are reflected in insiders prices i e on the pass through rate for realistic values of this rate we find that the merger in question will most likely increase consumer prices and therefore should not be allowed on an antitrust legislation basis

health insurance and the demand for medical care evidence from a randomized experiment we estimate how cost sharing the portion of the bill the patient pays affects the demand for medical services the data come from a randomized experiment a catastrophic insurance plan reduces expenditures 31 percent relative to zero out of pocket price the price elasticity is approximately 0 2 we reject the hypothesis that less favorable coverage of outpatient services increases total expenditure for example by deterring preventive care or inducing hospitalization

endogeneity in the concentration price relationship causes consequences and curses the ordinary least squares estimator of the effect of concentration on price is biased for two reasons first performance feeds back into structure causing a simultaneous equations bias second as a function of outputs or revenues measured concentration is correlated with determinants of price that are at best measured with error so measured concentration is correlated with the error term with panel data fixed effects procedures can be combined with instrumental variables to eliminate bias from both sources in concentration price regressions for the airline industry the bias can be substantial and negative copyright 1993 by blackwell publishing ltd

do financial bonuses reduce employee absenteeism evidence from a lottery this paper investigates the effectiveness of a lottery based bonus reward system in reducing employee absenteeism starting in june 2002 a dutch manufacturing firm held a monthly lottery for workers who had taken no sick leave in the previous three months and had not previously won the lottery in a given lottery each of seven contestants whose names were randomly drawn received 75 euros the authors find statistically significant differences in absence patterns across groups of workers with different eligibility statuses depending on their attendance records and whether they had previously won one finding is that absenteeism rose among workers who having won already were ineligible for further participation nevertheless and although the reduction in firm wide absence associated with the lottery drifted from 2 4 percentage points to 1 1 percentage points after seven months the authors conclude that the lot tery was of net benefit to the firm a perennial question is how firms can most effectively use financial incentives to motivate workers and thereby boost pro ductivity in this paper we investigate this issue with respect to workplace absenteeism which is a measure of lost productivity 1 we

moral hazard and sickness insurance abstract we study if the replacement level in the swedish national sickness insurance which replaces foregone earnings due to temporary illnesses affects work absence behavior we use micro data and estimate the effects of a major reform whereby the replacement level during the first 90 days in each absence spell was reduced on work attendance to separate out the effect of the reform from any trend in work absence we distinguish between the implications on the incidence of work absence i e the frequency of spells and the duration of the spells we also use a regression discontinuity approach to estimate the effects on the prevalence of work absence finally we estimate elasticities with respect to the replacement level in the sickness insurance

the health and earnings of rejected disability insurance applicants applicants for social security disability benefits who fail to pass the medical screening form a natural control group for beneficiaries data drawn from the 1972 and 1978 surveys of the disabled done for the social security administration show that fewer than 50 percent of rejected male applicants work typical earnings of those that do are less than 59 percent of median earnings for other men their age these data cast doubt on recent econometric work that suggests that the disincentive effects of the social security disability program have been substantial copyright 1989 by american economic association

a microeconometric evaluation of rehabilitation of long term sickness in sweden in this study the effects of various types of rehabilitation programmes on labour market out comes are estimated a main feature of this study is that it jointly evaluates multiple treat ments by nonparametric matching estimators the study is based on a large sample of per sons in western sweden who are long term sick and could participate in rehabilitation pro grammes our results suggest that work place training is superior to the other rehabilitation programmes with respect to labour market outcomes but compared to non participation no positive effects are found doi 10 1002 jae 757 download appendix pdf 147 kb

disability insurance benefits and labor supply some additional evidence this article examines the effects of a change in the canada quebec pension plan c qpp disability benefits on the labor supply of older canadian workers i obtain my estimates by exploiting a large increase in benefits that only occurred in the qpp program which only operates in quebec while benefits in the cpp program which operates in the rest of canada were unaffected unlike the existing estimates from the united states as well as earlier canadian obtained by gruber i find that disability benefits are not associated with a large increase in the nonparticipation of older men

the incidence of mandated maternity benefits i consider the labor market effects of mandates which raise the costs of employing a demographically identifiable group the efficiency of these policies will be largely dependent on the extent to which their costs are shifted to group specific wages i study several state and federal mandates which stipulated that childbirth be covered comprehensively in health insurance plans raising the relative cost of insuring women of childbearing age i find substantial shifting of the costs of these mandates to the wages of the targeted group correspondingly i find little effect on total labor input for that group jel 118 j32 h51 in an era of tight fiscal budget constraints mandating employer provision of workplace benefits to employees is an attractive means for a government to finance its policy agenda consequently in recent years there has been a growth of interest in mandated benefits as a tool of social policy for example the centerpiece of president bill clinton s health care proposal is mandated employer provision of health insurance and more than 20 states have man

the effects on sick leave of changes in the sickness insurance system to get a more complete picture of how labor supply is affected by economic incentives the effects on absenteeism should be taken into account in particular absenteeism due to sick leave can be considerable we examine whether the level of sick leave compensation affects sick leave behavior using long time series data 1955 99 for sweden with numerous changes of the compensation level we generally find strong effects reforms implying more generous compensation for sick leave tend to be associated with permanent increases in sick leave and vice versa these findings are reinforced in a panel study covering the 1983 91 period

evolved perception and behaviour in oligopolies abstract this paper builds on earlier studies which examined oligopolists in a repeated interaction as responding simply to past prices of their strategic rivals and which used data from a mature market with stable rules of thumb mappings from past actions or states of the market to present prices for the oligopolists behaviour whether purposefully learnt or emerging from the natural selection of the rivalry the earlier studies imposed exogenous partitions on the action space as perceived by the players this study explores how such perceptions might be endogenised a firm answer to the question of how oligopolists partition their perceptions of others actions both through time and across the price space will also provide information on how much or how little information they choose to use in short how boundedly rational the oligopolists have chosen to be we use data from a retail coffee market to examine the evolved optimal partitioning and mapping of price space manifest as the oligopolists rules of thumb the data suggest that brand managers are using very little information whether prices changed or not

unemployment insurance and unemployment spells this paper tests the effects of the level and length of unemployment insurance benefits on unemployment durations the paper particularly studies individual behavior during the weeks just prior to when benefits lapse higher unemployment insurance benefits are found to have a strong negative effect on the probability of leaving unemployment however the probability of leaving unemployment rises dramatically just prior to when benefits lapse individual data are used with accurate information of spell durations and the level and length of benefits the semiparametric estimation techniques used in the paper yield more plausible estimates than conventional approaches and provide useful diagnostics copyright 1990 by the econometric society

count data models with variance of unknown form an application to a hedonic model of worker absenteeism we examine an econometric model of counts of worker absences due to illness in a sluggishly adjusting hedonic labor market we compare three estimators that parameterize the conditional variance least squares poisson and negative binomial pseudo maximum likelihood to generalized least squares gls using nonparametric estimates of the conditional variance our data support the hedonic absenteeism model semiparametric gls coefficients are similar in sign magnitude and statistical significance to coefficients where the mean and variance of the errors are specified ex ante in our data coefficient estimates are sensitive to a regressor list but not to the econometric technique including correcting for possible heteroskedasticity of unknown form

the effects of market structure on prices of clothing and household furnishings abstract in this paper prices of clothing and household furnishings are explained using commuting variables and market concentration of department stores the concentration variable has a strong effect on prices of both product types the commuting variables only affect furnishings prices a result that is in keeping with expectations

sickness absence an international comparison this paper shows how internationally and intertemporally consistent information on sickness absence can be constructed from labour force surveys and describes some important features of data that we have generated using the luxembourg employment study we also analyse sickness absence rates by age gender and other socio economic characteristics of workers these relationships prove to be similar across countries with widely differing mean rates of absence in this dataset workers with longer tenure tend to have higher absence rates even when age is controlled for absence is also positively correlated with higher usual hours of work we show how internationally and intertemporally consistent information on sickness absence can be constructed from labour force surveys lfs and describe some important features of data that we have generated using the luxembourg employment study les such data fill an important gap in available information about absence since they have the potential to provide answers to a number of issues that remain unresolved in its study there is now substantial evidence going back to the work of the industrial fatigue research board in the 1920s and 1930s i that sickness absence is not purely a response to a medical condition workers who have access to compensation payments are more likely to be absent than those without buzzard and shaw 1952 the higher the rate of compensation the more absences workers are likely to take buzzard and shaw 1952 furthermore the higher the rate of compensation the longer absences are likely to be barmby et al 1991 the analysis of sickness absence is placed firmly in the agenda of economics by the idea that sickness absence rates are the consequence of choices that can be mediated by financial and other incentives the provision and level of sickpay is typically determined at two levels by negotiation between firms and their workforces and by government regulation interfirm variations in absence and their correlates are not well understood coles and treble 1996 have argued that the marginal cost of an absence is partially in the control of firms and can be usefully seen as driven by the nature of the technology adopted these theoretical arguments remain largely unexplored empirically but the ability to compare similar industries across different countries is likely to be revealing this paper was drafted during a visit to ceps instead in the summer of 1999 the research was funded by a grant of the european commission under the tmr programme access to large scale facilities hosted by iriss c i at ceps instead in differdange luxembourg we are also grateful for support from the leverhulme foundation through a grant to the institute for labour research at the university of essex and to colleagues at the ilr for their constructive comments acknowledgements to les data providers are given at the end of the paper we would also like to thank paul alkemade elena bardasi and pascal garin for their help any remaining errors are our own and the views expressed herein are not necessarily those of ceps instead 1 see for example vernon and bedford 1928

the impact of stricter criteria for disability insurance on labor force participation this paper studies the effect of a large scale policy change in the austrian disability insurance program which tightened eligibility criteria for men above a certain age using administrative data on the universe of austrian private sector employees the results of difference in difference regressions suggest a substantial and statistically significant decline in disability enrollment of 6 to 7 4 percentage points and an increase in employment of 1 6 to 3 4 percentage points the policy change had important spillover effects into the unemployment and sickness insurance program specifically the share of individuals receiving unemployment benefits increased by 3 5 to 3 9 percentage points and the share receiving sickness insurance benefits by roughly 0 7 percentage points

temporary disability insurance and labor supply evidence from a natural experiment most developed countries have compulsory insurance programs for temporary disability that is cash benefits for non work related sickness despite the economic significance of these programs little is known about their effects on work absenteeism or labor supply we exploit a policy reform that consisted of the abolishment of a waiting day together with an increase of cash benefits for short sick leaves we find that the total number of days of sickness absence was reduced by the reform which is likely due to the fact that the abolishment of the waiting period made it less costly for workers to be absent for short periods

the effects of expanding the generosity of the statutory sickness insurance system summary this article evaluates an expansion of employer mandated sick leave from 80 to 100 of forgone gross wages in germany we employ and compare parametric difference in difference did matching did and mixed approaches overall workplace absences increased by at least 10 or 1 day per worker per year we show that taking partial compliance into account increases coefficient estimates further heterogeneity in response behavior was of great importance there is no evidence that the increase in sick leave improved employee health a finding that supports a shirking explanation finally we provide evidence on potential labor market adjustments to the reform copyright 2013 john wiley sons ltd

spatial aspects of retail market structure beef pricing revisited abstract spatial retail markets with multiplant firms and conjectural variations are analyzed in this paper in this context the interplay between commuting characteristics and concentration is discussed leading to an empirical test for the effect of those variables on retail beef prices commuting characteristics are found to have a significant effect on prices this suggests that a significant concentration price relationship might emerge if retail markets were defined in the narrow way that the spatial retail model suggests that they should be