the private wage sector in cote d ivoire homogeneity or heterogeneity one dominant feature of economic development is change in the structure of the economy some sectors expand while others shrink in response to changes in output markets considerable adjustments must take place in factor markets as well development will therefore proceed more speedily when barriers in the factor markets are minimal whether or not barriers in the labor market exist macroeconomic discussions of labor markets usually assume uninhibited flows between sectors 13 similarly a large literature on earnings of wage workers has treated the wage sector as a homogeneous part of the labor market yet if the wage sector is heterogeneous model estimates have no empirical meaning and policy recommendations have no foundation

individual taxpayer response to tax cuts 1982 1984 with implications for the revenue maximizing tax rate abstract this paper measures the response of taxpayers to the u s personal rate reductions from 1982 to 1984 a baseline income distribution is created to describe what level and distribution could be expected in the absence of tax changes comparison of this baseline with actual tax return data shows that at least one sixth and probably one quarter of the revenue ascribable to the rate reductions was recouped by changes in taxpayer behavior the data also show that federal income tax revenue would have been maximized at a tax rate of about 35 percent and total income tax revenue maximized at a total tax rate of about 40 percent

long term unemployment the invention of hysteresis and the misdiagnosis of structural unemployment in the uk this paper investigates the empirical basis for the belief that unemployment makes people less employable and that the existence of a pool of long term unemployed people is therefore in itself a barrier to full employment drawing on data for great britain from the 1940s to the present day it shows that this idea has arisen through misinterpretations of the statistical evidence the resulting policies besides diverting resources from the demand side pro grammes appropriate to the true situation of structural unemployment appear to have created a problem of the kind they were intended to address by encouraging unemployed people to move onto sickness benefits

trials tricks and transparency how disclosure rules affect clinical knowledge scandals of selective reporting of clinical trial results by pharmaceutical firms have underlined the need for more transparency in clinical trials we provide a theoretical framework which reproduces incentives for selective reporting and yields three key implications concerning regulation first a compulsory clinical trial registry complemented through a voluntary clinical trial results database can implement full transparency the existence of all trials as well as their results is known second full transparency comes at a price it has a deterrence effect on the incentives to conduct clinical trials as it reduces the firms gains from trials third in principle a voluntary clinical trial results database without a compulsory registry is a superior regulatory tool but we provide some qualified support for additional compulsory registries when medical decision makers cannot anticipate correctly the drug companies decisions whether to conduct trials

the diversion from unemployment to sickness across british regions and districts beatty c and fothergill s 2005 the diversion from unemployment to sickness across british regions and districts regional studies 39 837 854 around 2 7 million non employed adults of working age in the uk claim sickness related benefits and the numbers have risen steeply over time the very large variation in the numbers across districts and regions points strongly to extensive hidden unemployment especially in older industrial areas affected by job losses this paper builds on two previous papers by the same authors one dealing with the theoretical framework and the other with a local case study to present wholly new estimates of the scale of the diversion across all parts of the country it also questions contemporary perceptions of the uk labour market and the validity of current approaches to re engaging sickness claimants with employment

the price of innovation new estimates of drug development costs the research and development costs of 68 randomly selected new drugs were obtained from a survey of 10 pharmaceutical firms these data were used to estimate the average pre tax cost of new drug development the costs of compounds abandoned during testing were linked to the costs of compounds that obtained marketing approval the estimated average out of pocket cost per new drug is us 403 million 2000 dollars capitalizing out of pocket costs to the point of marketing approval at a real discount rate of 11 yields a total pre approval cost estimate of us 802 million 2000 dollars when compared to the results of an earlier study with a similar methodology total capitalized costs were shown to have increased at an annual rate of 7 4 above general price inflation 2003 elsevier science b v all rights reserved

persuasion bias in science can economics help we investigate the impact of conflicts of interests on randomised controlled trials in a game theoretic framework a researcher seeks to persuade an evaluator that the causal effect of a treatment outweighs its cost to justify acceptance the researcher can use private information to manipulate the experiment in three alternative ways i sampling subjects based on their treatment effect ii assigning subjects to treatment based on their baseline outcome or iii selectively reporting experimental outcomes the resulting biases have different welfare implications for sufficiently high acceptance cost in our binary illustration the evaluator loses in cases i and iii but benefits in case ii

compensating differentials and self selection an application to lawyers this paper models individual choice between two types of jobs as dependent on the difference in potential earnings and on preferences for nonpecuniary the model leads to simultaneous estimation of earnings and job choice functions in a manner that takes account of self selection of individuals into the sector of highest utility an application to lawyers choosing between private and public interest law casts doubt on the notion that public interest lawyers are accepting substantially lower earnings by virtue of their choice an impression derived from estimation of earnings functions without accounting for self selection the estimation technique also takes proper account of the choice based nature of the sample which appears to be important

the long term effects of job search requirements evidence from the uk jsa reform this paper investigates long term returns from unemployment compensation exploiting variation from the uk jsa reform of 1996 which implied a major increase in job search requirements for eligibility and in the related administrative hurdle search theory predicts that such changes should raise the proportion of non claimant nonemployed with consequences on search effort and labor market attachment and lower the reservation wage of the unemployed with negative effects on post unemployment wages i test these ideas on longitudinal data from social security records llmdb using a difference in differences approach i find that individuals who start an unemployment spell soon after jsa introduction as opposed to six months earlier are 2 5 3 more likely to move from unemployment into incapacity benefits spells and 4 5 less likely to have positive earnings in the following year this latter employment effect only vanishes four years after the initial unemployment shock also annual earnings for the treated individuals are lower than for the non treated these results suggest that while tighter search requirements were successful in moving individuals off unemployment benefits they were not successful in moving them onto long lasting or better jobs with fairly long lasting unintended consequences on a number of labor market outcomes

pensions and wages an hedonic price theory approach this paper examines whether a trade off exists between the level of pension benefits and wages the 1983 survey of consumer finance is used to match detailed information on pension plans to worker characteristics for a random sample of the population the pension wage tradeoff is estimated using both a contractual model of the labor market and the spot market model used in previous studies the results indicate a large negative tradeoff in the contractual model but only a negligible tradeoff in the spot market model results from estimating the underlying structural equations for pensions are also presented copyright 1992 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

employers provision of pensions and sick pay evidence from the 1990 workplace indistrial relations survey this paper examines the determinants of pension and sick pay provision using data on some 1100 private sector establishments with 25 or more employees it also compares the wages of employees eligible for a pension or for sick pay with the wages of those for whom no such provision was made using ordered probit techniques three levels of provision were examined with respect to each type of benefit no provision provision for white collar employees only and provision for all employees benefit provision was found to be associated with work place size and with the extent to which employment was white collar it was negatively associated with the level of part time working new establishments were slightly less likely to offer pensions than older ones but age had no impact on sick pay provision perhaps because it is less complex and costly than pension provision establishments which recognized trade unions were more likely to offer fringe benefits than those which did not however blue collar unions se

does health insurance reduce illness related worker absenteeism the objective of this article is to examine whether having health insurance reduces illness related absenteeism among older workers a nationally representative sample of 1780 workers in the united states aged 52 64 are drawn from the 2004 2006 health and retirement study hrs binary logistic regressions and censored tobit models are estimated for workers likelihood of missing work days due to illness and the number of illness related work days missed respectively while explicitly addressing the possibility of insurance selection effects the findings suggest that over a 12 month period older workers without health insurance are as likely as insured workers to miss work days due to illness and there are no differences in the number of days missed between insured and uninsured workers however there is strong evidence that poor baseline health onset of new diseases and longer hospitalization significantly increase an older worker s absenteeism at work these results suggest that having health ins

a note on the substitution between wage and non wage benefits in spot labour markets abstract recent empirical work suggests that spot labour market workers have a strong preference towards wages over fringe benefits this paper provides a theoretical framework based on this finding after a discussion of the utility function and equilibrium the paper proceeds to a comparative statics analysis an important result is that workers spend all extra compensation on wages only this is shown to be true in the case that wage benefits are taxed furthermore proportional taxes have no effect for workers choice between wage and non wage benefits

the elusive wage benefit trade off the case of employer provided health insurance this study shows that standard regressions estimated to measure a trade off between wages and health insurance are misspecified by insufficiently accounting for establishment and firm size an interactive size corrected specification is more likely to reveal a trade off furthermore because insurance decisions are typically made by firms and wages set by establishments the insurance constraint on establishments in multi establishment firms weakens the trade off we use model generated data to show that both factors contribute to the failure in previous research to identify a trade off and data from a cross section of northern californian establishments to test for a trade off in multi establishment and single establishment firms

turnover costs and the wage fringe mix this paper examines how firms choose their compensation package to influence employee turnover a firm will attempt to maintain a steady state of trunover consistent with its training and hiring costs we develop a model of this relationship when the firm s ability to offer a differentiated compensation package both the theoretical and empirical findings of our study emphasize the importance of the link between turnover costs and the compensation mix that is quits are negatively realted to both the share of pensions in the total compensation package and the level of wages the influence of pensions in attracting stable workers however is diminishing an important implication is that the policies which attempt to standardize worker compensation will hinder the market determination of turnover and hence will generate inefficiencies in the labour market

optimal executive perquisites abstract expenditures by executives on personal perquisites can be optimal for the board of directors using a principal agent model we present a numerical example where the principal can reduce the total cost of compensation for the agent by offering a lower expected bonus and a larger budget allocation from which the agent diverts some funds to perquisites this is optimal when the agent has sufficiently large diminishing marginal utility for perquisites

a new test for supplier inducement and application to the canadian market for dental care abstract the hypothesis that dentists do not induce demand for their services is tested using reduced form estimates of the price elasticity of demand if demand is autonomous shifts in supply for whatever reason should generate equivalent estimates provided access costs change proportionately with shifts in supply if demand inducement is present demand can appear to be very elastic or very inelastic depending on what is causing the shift in supply each of three applications of this test conducted in the context of jointly estimated fee and quantity equations using annual canadian data for 1956 1989 rejects the no inducement hypothesis

the recent performance of the uk labour market century there is no question that one of the major challenges facing any industrialised country is to ensure that its labour market operates so as to enable people who want to work to do so at a reasonable rate of pay so this will be our focus in what follows in fact we consider two major issues the first refers to the performance of the labour market from the macroeconomic point of view and this we cover in section 2 here we look at unemployment and inflation explaining why recent history from this perspective looks relatively benign and asking about the future consequences of some of the significant policy changes since 1997 the second major issue dealt with in section 3 concerns the imbalances in the labour market across different skill groups focusing particularly on the problem of worklessness facing the unskilled again we attempt to analyse why this problem has arisen and the main thrust of recent policy in attempting to resolve it we then conclude with a summary of what we have learned

inflation and the uk labour market inflation is endemic in britain aside from the odd year inflation in britain has been higher than the average of the oecd countries for the last forty years this is as true for the anti inflationary 1980s as for the inflationary 1970s and the libertarian 1960s in the light of this fact we look at the problem of inflation both in general terms and in the british context furthermore we shall consider inflation from a particular point of view namely that of the labour market although it would perhaps be more apt to describe the viewpoint as the supply side

the geographical concentration of labour market disadvantage this paper argues that british welfare to work policies are inadequate given the geographical concentration of worklessness in northern regions and in cities and former coalfields while unemployment has been converging geographically inactivity has not all the welfare to work target groups youth unemployed long term unemployed lone parents the long term sick and partners of the unemployed have closely similar geographical distributions official arguments that there are adequate job vacancies everywhere are shown to be flawed the geography of worklessness is largely explained by the weakness of adjustment through migration and commuting to the loss of jobs in manufacturing and mining the cities being particularly affected by urban rural manufacturing shift policy needs to promote more relevant employment in high unemployment areas through increased spending on derelict land reclamation transport and other infrastructure the case for more supportive policies towards manufacturing should also be considered

the role of pensions in the labor market a survey of the literature because employer sponsored group pension plans entail agreements between workers and their employers explicitly linking future payment and employment they offer an unusual window into long term employment relationships this review of recent research on pensions explores how pensions influence employee compensation retirement turnover and other matters central to the determination of labor s price and quantity over time the authors also outline some unanswered questions and difficult to reconcile findings because the pension promise involves an explicit and relatively well documented set of statements regarding future contingent payment and employment an examination of the design and operation of employersponsored group pension plans can yield important insights into the long term employment relationship specifically pension research illuminates some important labor market questions in two ways it offers insight into an important element of compensation in its own right and it furthers our understanding of labor markets in which long term

labor market effects of employer provided health insurance i introduction increasing health insurance coverage is arguably an important policy goal the congressional budget office 2003 estimates that in 1998 20 30 million americans had no health insurance for the entire year approximately 40 million were uninsured at a specific point in time in the year and nearly 60 million were without coverage some time during the year most individuals who have health insurance in the united states obtain it through their employer in 1999 65 8 of nonelderly americans had employer provided insurance also called group insurance or employer sponsored insurance either through their own employer or through the employer of another household member see gruber 2001 employer provided insurance plans generally have lower premiums and offer more benefits than individual insurance plans health insurance providers can offer cheaper and better plans to company employees for at least two reasons first the average administrative cost of such plans is lower than individual plans second employment based plans are typically subject to less adverse selection than individual plans particularly so for large employers furthermore the tax subsidy afforded employment based health insurance renders the effective consumer price substantially lower than the cost see pauly 1986 and gruber 2001 together these various factors give a strong incentive for employers to offer and employees to accept coverage as part of their employment contract as employer provided insurance is by far the most prevalent form of coverage in the private sector policy makers look for further expansion of this base as a way to insure the uninsured while avoiding direct public financing as a way to increase employer based health insurance coverage some states either have or are considering government mandates that require employers to provide insurance to certain types of workers 1 the state of hawaii requires private sector employers to offer health insurance to all workers who work for more than 20 h a week and requires these workers to have insurance the state of california is currently considering a similar mandate there is a considerable interest from policy makers on the effects of such mandates on labor market outcomes in this study we report on an experiment that was designed to provide some insights about possible effects of alternative health insurance regulations on the competitive labor market with a particular focus on mandates since we only considered a competitive market setting with complete contracts and no wage rigidities our results may not be directly applicable to all labor market situations 2 however the study provides useful insights about the interaction of health insurance benefit provision wages and employment structure for labor markets where the competitive wage setting and the complete contracts assumptions are reasonable with these limitations in mind our results can be also generalized to other types of employer provided fringe benefits such as paid vacations or pension plans as any government intervention health insurance regulation may affect the labor market theory predicts that in perfectly competitive labor markets health insurance creates no distortionary effects on the labor market equilibrium as long as the coverage is not mandated and there are no wage rigidities 3 all workers who value insurance above its cost of provision are offered insurance and accept it the wages are adjusted downward see rosen 1986 and gruber 2000 summers 1989 used a simple supply and demand analysis to show that the effect of increases in premiums on equilibrium labor hours and wage depends both on the elasticity of labor demand and labor supply and on how fully workers value changes in the cost of health insurance if the demand or the supply of labor is completely inelastic or if workers fully value the insurance then an increase in the premium would result in an equal decrease shift in wages

the effect of unionism on fringe benefits this study analyzes the impact of unionism on fringes paid to production workers using data on individual establishments it compares fringe expenditures in establishments having the same level of compensation per hour and finds that unionism raises the share of compensation allotted to fringes particularly to pensions vacation pay and life accident and health insurance in addition since unionism also raises the straight time wage rate itself a prime determinant of expenditures on fringes unionism has a very sizeable impact on total fringe expenditures as well as on the fringe share of compensation the union fringe effect exceeds in percentage terms the union wage effect and is sufficiently large to suggest that standard union wage studies understate the union effect on total compensation the study also compares the fringe expenditures of production and non production workers within the same establishment controlling for within establishment pay policies the findings suggest that the pres

how elastic is the firm s demand for health insurance abstract we investigate the impact of tax subsidies on the firm s decision to offer insurance and on conditional firm spending on insurance we do so using the micro data underlying the employment cost index which has a major advantage for this exercise the matching of very high quality compensation data with information on a sample of workers in the firm we find that overall there is a moderately sized elasticity of insurance offering with respect to after tax prices 0 25 and a larger elasticity of insurance spending 0 7 we also find that the elasticities are driven primarily by small firms for whom the elasticity is larger and we find that there is significant value added to this employer based data replicating methods from standard micro data sources in our data lead to misleading estimates of these key parameters our simulation results suggest that major tax reform could lead to an enormous reduction in employer provided health insurance spending

returns to r d on new drug introductions in the 1980s abstract this study finds that the mean irr for 1980 1984 u s new drug introductions is 11 1 and the mean npv is 22 million 1990 dollars the distribution of returns is highly skewed the results are robust to plausible changes in the baseline assumptions our work is also compared with a 1993 study by the ota despite some important differences in assumptions both studies imply that returns for the average nce are within one percentage point of the industry s cost of capital this is much less than what is typically observed in analyses based on accounting data

how well are women doing female non employment across uk regions discussions of the uk s recent labour market performance commonly mention the contrasting trends in the unemployment rate down the employment rate up and the inactivity rate flat these same commentaries also notice that the flatness of the overall inactivity rate masks contrasting trends by sex with male rates slowly rising and female rates slowly falling and then proceed to discuss male inactivity in some detail before concluding bypassing the composition of female inactivity these commentaries fail to notice that the male and the female proportions of the population not working by reason of sickness or disability are quite similar equally they have rarely noticed that male and female non employment rates display a very similar regional hierarchy with female rates in the north as much as 50 higher than those in the south and that there is an even steeper north south gradient in some of the components of non employment for example sickness and disability rates for females in the

the concept of employability the concept of employability plays a crucial role in informing labour market policy in the uk the eu and beyond this paper analyses current and previous applications of the term and discusses its value as an exploratory concept and a framework for policy analysis it then traces the development of the concept discusses its role in current labour market and training strategies with particular reference to the uk and seeks to identify an approach to defining employability that can better inform labour market policy by transcending explanations of employment and unemployment that focus solely on either supply side or demand side factors although the literature offers a range of definitions of employability many policy makers have recently used the term as shorthand for the individual s employability skills and attributes it is argued that this narrow usage can lead to a hollowing out of the concept of employability the paper concludes by presenting a broad framework for analysing employability built around individual factors personal circumstances and external factors which acknowledges the importance of both supply and demand side factors

informational lobbying and political contributions abstract interest groups can potentially influence political decision makers by offering contributions and by providing relevant information that sways the decision in the group s favor what mix of these two instruments should an interest group choose and how does the use of one instrument affect the effectiveness of the other in this paper we identify an information externality that raises the cost of offering contributions and show that this indirect search cost reduces the group s incentive to gather information when contributions are allowed furthermore we analyze how competition among lobby groups as providers of information and contributions affect the choice and effectiveness of the instruments we show that the information externality rewards the group that can abstain from information search and focus its influence on contributions

relying on the information of interested parties we investigate the conventional wisdom that competition among interested parties attempting to influence a decisionmaker by providing verifiable information elicits all relevant information we find that if the decisionmaker is strategically sophisticated and well informed about the relevant variables and about the preferences of the interested party or parties competition may be unnecessary to achieve this result if the decisionmaker is unsophisticated or not well informed competition is not generally sufficient if the interested parties interests are sufficiently opposed however or if the decisionmaker is seeking to advance the parties welfare then competition can reduce or even eliminate the decisionmaker s need for prior knowledge about the relevant variables and for strategic sophistication in other settings only the combination of competition among information providers and a sophisticated skepticism is sufficient to allow effective decisionmaking

restoring the promise of american labor law the product of an october 1993 conference on labor law reform jointly sponsored by the school of industrial and labor relations at cornell u and the department of economic research at the afl cio this volume both argues the need for fundamental reform of the legal and institutional underpinnings o

search for nonwage job characteristics a test of the reservation wage hypothesis previous structural models of job search behavior have been based upon the reservation wage property this article provides estimates of a more general search model that nests models with the reservation wage property the estimates lead to rejection of the reservation wage property the model includes hours of work in the utility function but other nonwage job characteristics can be included as well an experiment based on the estimated parameters indicates that a significant proportion of job offers would be mistakenly predicted to be accepted or rejected under the restrictions implied by the reservation wage property

tax structure and tax compliance a model of individual tax compliance behavior including evasion and avoidance is developed and estimated the model recognizes the importance of marginal income tax rates payroll tax contributions and benefits and the probabil ity of detection and the penalty on unpaid taxes share equations for avoidance evasion and reported income are estimated using individual level data the estimation results indicate that the tax base rises with higher benefits for payroll tax contributions and falls with higher marginal tax rates the base also falls with more severe penalties and more certain detection of evasion as individuals substitute towards avoid ance income t he methods by which individuals reduce their tax liabilities take a variety of legal and illegal forms all of which are influenced at least in part by incentives created by the tax structure these methods can be broadly classified as avoid ance and evasion tax avoidance is any legal activity that lowers taxes such as worker substitu tion between wage and nonwage compensation tax evasion is the reduction in tax liabilities by illegal means such as underreporting income on tax returns despite extensive but separate literatures on avoidance and evasion we know very little about the tax base response to changes in tax structure it is the purpose of this paper to examine the role that the tax structure plays in compliance there are several reasons for the persistence of the compliance puzzle most prominent is the absence of detailed individual data that would allow a full empirical specification of all factors affecting compliance this difficulty is most evi dent when searching for individual data on the evasion compliance decision even when avail able data have never allowed in the same work the construction of both tax and audit variables 1 clearly data availability is even more problem atic when looking at the choice among evasion avoidance and reported income in addition pre vious work has not looked at the avoidance evasion compliance decision as a joint process even though these decisions are made simultane ously 2 further both strands of the literature have ignored another factor that may affect the compliance decision the benefits that accrue from participation in payroll programs if benefits are tied only to taxable income then their presence gives individuals an incentive to pay taxes in short there has been no empirical work that analyzes the effects of tax rates probabilities penalties and payroll benefits on avoidance and evasion choices of individuals in this paper we provide such an analysis we first develop a theory of individual choice among the three types of compensation we then esti mate the resulting share demand equations using a unique data set which has detailed information on the compensation paid to roughly one quarter of the labor force in jamaica in 1983 from these data we are able to derive measures of reported taxable income evasion income and avoidance income for individual workers in the formal sec tor we are also able to construct measures of the marginal income tax rate marginal payroll taxes and benefits the probability of detection and the penalty on evasion for individual workers we are therefore able to estimate for the first time the responses of workers to the full range of tax structure parameters section i presents the theoretical model of worker compensation choice and the empirical specification of the model section ii discusses the jamaican tax system data and variable con struction are discussed in section iii estimation results are presented in section iv the final section summarizes the main results

substitution between wage and nonwage benefits you gotta be kidding ollie you re just robbing yourself schuylkill mutual offers a terrific deal on keogh and we could plug you in in fact we advise plugging you in on the corporate end so not a nickel comes out of your personal pocket it comes out of the corporate pocket and there s that much less for uncle to tax these poor saps carrying their own premiums with no company input are living in the dark ages there s nothing shady about rigging it this way we re just using the laws the government has put there they want people to take advantage it all works to up the gross national product you know what i mean by keogh don t you you re looking kind of blank john updike p 296