price adjustment in long term contracts the case of coal in two recent papers i examined the effects of relationship specific investment on the duration of contracts negotiated between electric utilities and coal suppliers that work demonstrated that when relationshipspecific investment is important for a cost minimizing supply relationship contracts are frequently utilized that specify ex ante the terms and conditions of trade over many future years in this article i examine the characteristics of the price adjustment provisions specified in these long term coal contracts i utilize a sample of about 250 coal contracts to analyze the structure of formal price adjustment provisions in coal contracts in order to determine the factors that affect initial negotiated contract prices and to examine actual transaction price behavior over time there has been much recent theoretical work as well as some related empirical work that has focused on the benefits of long term contracts when relationship specific investments are important 2 there has also been some theoretical work that focuses on the contractual arrangements that may be chosen to mitigate opportunism problems and guard against

empathy or antipathy the impact of diversity mixing across ethnic and class lines could potentially either spur understanding or inflame tensions between groups we find that white students at a large state university who were randomly assigned african american roommates in their first year are more likely to endorse affirmative action policies several years later whites who were randomly assigned black roommates are also more likely to say they have more personal contact with and interact more comfortably with members of minority groups whites who were assigned either black or low income roommates are more likely to view a diverse student body as essential for a high quality education students become less supportive of higher taxes for the wealthy when assigned roommates from high income families and they appear more likely to volunteer when assigned roommates from low income families taken together these results suggest that students become more empathetic with the social groups to which their roommates belong

physician induced demand for surgery following up the earlier findings by fuchs on surgeon induced demand this paper makes numerous data and econometric improvements in conducting a test of neoclassical and inducement theories a simultaneous equation model is used to estimate physician demand and equilibrium fees for surgery from a sample of 350 psus over the 1969 76 period the results provide definite support for the notion of competitive market failure particularly in large metropolitan areas other things equal fees and utilization are higher in surgeon rich areas although our estimated shift elasticities were only about one third those found by fuchs a statistically significant albeit small price elasticity of demand for surgery was also obtained in contrast to fuchs increasing monopoly and disequilibrium models are also tested without altering the basic findings where surgeons were in short supply their availability significantly affected surgery rates although a small supply effect was found in plentiful areas as well

the importance of group coverage how tax policy shaped u s health insurance in 1954 the internal revenue service stipulated that employer contributions to the health insurance plans of their employees were to be excluded from employee taxable income today the tax subsidy is major feature of the u s health care market this paper examines the initial effects of the tax subsidy on the demand for health insurance using previously unexamined data from 1953 and 1958 results suggest that the tax subsidy increased the growth of group insurance particularly among union members and employed persons this is a critical effect because group insurance is not only less expensive than individual insurance but it is also easier to obtain and households with access to group health insurance are far more likely to purchase health insurance coverage than those without similar access by increasing access to group insurance the tax subsidy fostered an increase in the purchase of group health insurance by people who may not have purchased individual coverage and generated institutional change as it cemented an employment based system of group health insurance in the united states this abstract was borrowed from another version of this item

contract renewal under uncertainty abstract the incentive to adjust prices is considered from a bilateral perspective in a setting where changes in outside opportunities drive the incentive to renew contracts and costs preclude continuous renewal a model encompassing several contract forms is formulated and the existence of an equilibrium to the bilateral renewal game is established prices display inertia and the incumbent contract is found to be more resistant to changes in outside opportunities the larger the costs of contract renewal the variability of outside opportunities and the lower the discount rate the model is shown to match a number of empirical observations on contracts

state dependent pricing and the dynamics of money and output standard macroeconomic models of price stickiness assume that each firm leaves its price unchanged for a fixed amount of time we present an alternative model in which the pricing decision depends on the state of the economy we find a method of aggregating individual price changes that allows a simple characterization of macroeconomic variables the model produces a positive money output correlation and an empirical phillips curve in addition the impact of monetary shocks depends crucially on the current level of output which points to a natural connection between state dependent microeconomics and state dependent macroeconomics i introduction there is a long tradition in macroeconomics of attributing the real effects of nominal demand shocks to nominal price stickiness in this view if there is no change in prices when nominal demand rises then quantities must bear the burden of adjustment hence nominal price rigidity provides the friction needed for nominal demand shocks to be transmitted to the real economy standard models of this transmission mechanism such as fischer 1977 and taylor 1980 are based on the assumption that each firm leaves its price unchanged for a fixed amount of time the main reason for considering such time dependent pricing rules is their analytic tractability constraining firms to adjust their prices at prespecified times both simplifies the derivation of equilibrium strategies and allows the use of powerful time series techniques to analyze aggregate dynamics the main disadvantage of the timedependent approach is that between price adjustments firms are not allowed to respond even to extreme changes of circumstance this makes it difficult to know whether the qualitative effects of money in these models are the result of nominal rigidities per se or of the exogenously imposed pattern of price changes an alternative approach to modeling price stickiness is to allow the price setting decision to depend on the actual state of the

the effect of physician advice on alcohol consumption count regression with an endogenous treatment effect although there are encouraging trends alcohol abuse continues to be a significant public health problem econometric studies of alcohol demand have yielded a great deal of information for alcohol abuse prevention policy these studies suggest that higher alcohol taxes and stricter drunk driving policies can reduce heavy drinking and drunk driving in this paper we explore the role physician advice plays in the campaign to prevent alcohol related problems compared to alcohol taxation physician advice is a more precisely targeted intervention that does not impose extra costs on responsible drinkers compared to the resource costs of arresting processing and punishing drunk drivers physician advice may be a lower cost intervention to provide a basis for alcohol policy analysis we use an alcohol demand framework to test whether physician provided information about the adverse consequences of alcohol abuse shifts demand to more moderate levels there are three aspects of our alcohol demand model that complicate the estimation 1 the dependent variable is non negative it is a count variable number of drinks consumed 2 a non trivial number of sample observations have zero values for the dependent variable and 3 because the data we use is non experimental the treatment variable indicating receipt of advice from a physician may be endogenous we implement an estimation method that is specifically designed to deal with these three complicating factors our results show that advice has a substantial and significant impact on alcohol consumption by males with hypertension and that failing to account for the endogeneity of advice masks this result copyright 2001 john wiley sons ltd

ethnic discrimination evidence from china abstract we study the role of ethnicity in experimental labor markets where employers determine wages of workers who perform a real effort task this task requires a true skill which we show is not affected by minority status in some treatments we provide subtle priming to employers about minority status of workers as commonly depicted on chinese hukou identification system we conduct our experiments at two sites located in provinces that differ by their historical shares of ethnic groups in the population we find that 1 han and minority workers are equally productive in both provinces 2 in the diverse province there is no difference in the wages between han and minority workers 3 in the non diverse province minority workers receive 4 7 lower wages than han workers

the medicaid notch labor supply and welfare participation evidence from eligibility expansions i assess the impact of losing public health insurance on labor market decisions of women by examining a series of medicaid eligibility expansions targeted toward young children these targeted expansions severed the historical tie between afdc and medicaid eligibility the reforms allowed a mother s earnings to increase without losing public health insurance for her young children increasing the income limit for medicaid resulted in a decrease in afdc participation and an increase in labor force participation among these women the effects were large for ever married women and negligible for never married women

investments holdup and the form of market contracts the authors analyze incomplete contracts to induce efficient investment with exogenous switching costs fixed price contracts are efficient generate some rigidity in prices are renegotiated intermittently by possibly small amounts and when inflation is positive generate asymmetric responses to shocks all consistent with evidence on prices and wages with two sided specific investments efficiency requires prices to have sufficient escalator clauses to avoid renegotiation as observed in many long term contracts a third case with one sided specific investments can generate take or pay contracts and explain why firms sometimes pay for specific investments that appear to benefit employees directly

demand inducement and the physician patient relationship the physician patient relationship is a paradigm for any expert client relationship the physician both diagnoses the patient s illness and recommends a treatment this dual role gives the physician incentive to recommend treatments whose costs outweigh their medical benefits these socially inefficient treatments correspond to the notion of physician induced demand the level of inducement chosen by the physician is shown to depend on the price and potential medical benefits of treatment and the relative diagnostic skills of physician and patient this model offers several testable hypotheses some of which are confirmed by related studies

analytical approximations in models of hysteresis decisions made under ongoing uncertainty and costly reversibility entail a range of the state variable where inaction is optimal which in turn produces hysteresis permanent effects of temporary shifts the range is usually defined by non linear equations that need numerical solutions in this paper a technique of analytical approximations is developed and applied to two models menu costs and investment the resulting explicit solutions help clarify why hysteresis is important even for small irreversibility in the menu cost model hysteresis is two orders of magnitude larger than under the akerlof yellen or mankiw assumptions when decisions that are costly to reverse are made under conditions of ongoing uncertainty the optimum policy usually entails a range of inertia the action should be taken only when the value of the underlying state variable becomes especially favourable and reversed only when it becomes especially unfavourable there is an intermediate range over which inaction is optimal this in turn gives rise to hysteresis starting from a value in the range of inertia if the state variable crosses the action trigger point and then returns to its original level the action will be taken but not reversed thus a temporary change will leave a permanent effect numerical solutions for models of irreversible investment show that the range of inaction is remarkably large even when the cost of reversal is small see brennan and schwartz 1985 constantinides 1986 and dixit 1989a b for examples of this unfortunately the equations tlhat determine the optimum policy are highly non linear they do not have analytical solutions therefore we lack a clearer and more general understanding of why hysteresis is numerically so important in this paper i derive analytical approximations for the solutions of more general problems of this kind when the costs of change are small the idea that small costs of change induce large amounts of inertia has been popularized in the model of akerlof and yellen 1985 mankiw 1985 and others in these models second order small costs of making price changes yield price stickiness in response to first order changes in the money supply this is a simple application of the envelope theorem but these models are static and their application to a dynamic reality must assume either permanent shocks or static expectations when there is ongoing uncertainty which is rationally expected by the decision maker the option value of the status quo enlarges the zone where inaction is optimal adding these features to the mankiw akerlof yellen may model i show that fourth order small costs of change generate first order inertia

pretia ex machina prices and process in long term contracts aimong the primary motives for writing contracts identified in both the law and economics literatures is the desire to protect against the hazards inherent to exchange where one or both parties have invested in reliance or relationship specific assets in support of the transaction because such investments have a higher value in their intended than in their next best use parties have an incentive to engage in haggling or other forms of opportunism in hopes of influencing the distribution of the resulting quasi rents contracts promote efficiency by securing the distribution of those rents ex ante thereby avoiding costly repetitive bargaining over the terms of trade and reducing the risk for each party of relying on the performance of the other in reality this description of the role and functioning of contracting is oversimplified as a number of legal and economic scholars have emphasized contracts are not the precise mechanically enforced documents often encountered in economic theory 2 indeed contracts are extremely

partial gift exchange in an experimental labor market impact of subject population differences productivity differences and effort requests on behavior we report a gift exchange experiment firms make wage offers workers respond by determining an effort level higher effort is more costly to workers and firms have no mechanism for punishing or rewarding workers consistent with the gift exchange hypothesis workers provide more effort at higher wages but undergraduates provide substantially less effort than mbas evidence suggests this results from differences in prior work experience firms nonbinding effort requests are at least partially honored resulting in increased overall effort for undergraduates although higher wages are relatively more costly for lower productivity firms workers do not provide them with more effort

a re examination of the meaning and importance of supplier induced demand abstract despite twenty years of work on supplier induced demand sid there has been little discussion or investigation of how inducement affects the health of patients we develop a conceptual framework for sid which includes the clinical effectiveness of the health services utilized as well as the effectiveness of the agency relationship between the physician and the patient the framework is used to identify several conceptually distinct types of utilization each with its own policy implications which have been intermingled in the sid literature after examining each type of utilization we conclude that a continued focus by health economists on the phenomenon of inducement even within an extended conceptual framework may be too limited for the development of policies regarding health service utilization

do increased premium subsidies affect how much health insurance is purchased evidence from the self employed abstract this paper estimates the effect of recent federal and state level increases in the deductibility of health insurance premiums for self employed individuals which reduced the after tax price of health insurance on both the take up of coverage and the amount of insurance purchased using a panel of tax returns filed by self employed taxpayers from 1999 to 2004 we estimate a take up elasticity of 0 316 overall with significantly higher elasticities for single taxpayers on the intensive margin we find an elasticity of 0 733 overall

identification of supplier induced demand in the health care sector this paper explores the issues and pitfalls encountered when attempting to test empirically the hypothesis that physician hospital or any other input supply level induces increasing demand for health services in the strict sense of demand shift and through that increased demand for the input in question evidence is presented which suggests that an empirical test of the supplier induced demand sid hypothesis of the type traditionally performed may not in fact be feasible with cross sectional aggregate data such as is usually used

a microeconometric model of the demand for health care and health insurance in australia this paper develops a model for interdependent demand for health insurance and health care under uncertainty to throw light on the issue of insurance induced distortions in the demand for health care services the model is used to empirically analyse the determinants of the choice of health insurance type and seven types of health care services using micro level data from the 1977 78 australian health survey econometric implementation of the model involves simultaneously issues of discreteness of choice selectivity and stochastic dependence between health insurance and utilization health status appears to be more important in determining health care service use than health insurance choice while income appears to be more important in determining health insurance choice than in determining health care service use for a broad range of health care services both moral hazard and self selection are found to be important determinants of utilization of health care services

bankruptcy as implicit health insurance this paper examines the implicit health insurance that households receive from the ability to declare bankruptcy exploiting multiple sources of variation in asset exemption law i show that uninsured households with a greater financial cost of bankruptcy make higher out of pocket medical payments conditional on the amount of care received in turn i find that households with greater wealth at risk are more likely to hold health insurance the implicit insurance from bankruptcy distorts the insurance coverage decision using a microsimulation model i calculate that the optimal pigovian penalties are three quarters as large as the average penalties under the affordable care act

consumer health information and the demand for medical care this paper is an empirical investigation of consumer health information using a new direct measure of information the econometric approach treats both information and physician visits as endogenous variables when estimating the demand for medical care the results show that information increases the probability that a consumer uses medical care but that conditional on use the quantity of care consumed is not related to information the results contradict specific implications of models where physicians can create or induce demand for their own services several results suggest that poorly informed consumers tend to underestimate the productivity of medical care in treating illness copyright 1990 by mit press

an empirical investigation on the economic impact of shared patient information among doctors abstractthis study investigates how an increase in patient information sharing among doctors impacts healthcare costs to this end we explore this impact through two mechanisms the informative r

public health insurance individual health and entry into self employment we investigate the impact of a differential treatment of paid employees versus self employed workers in a public health insurance system on the entry rate into self employment health insurance systems that distinguish between the two sectors of employment create incentives or disincentives to start a business for different individuals we estimate a discrete time hazard rate model of entry into self employment based on representative household panel data for germany which include individual health information the results indicate that an increase in the health insurance cost differential between self employed workers and paid employees by 10 per month decreases the probability of entry into self employment by 1 7 of the annual entry rate this shows that entrepreneurship lock which an emerging literature describes for the system of employer provided health insurance in the usa can also occur in a public health insurance system therefore entrepreneurial activity should be taken into account when discussing potential health care reforms

tax incentives and the demand for private health insurance we analyze the effect of an individual insurance mandate medicare levy surcharge on the demand for private health insurance phi in australia with administrative income tax return data we show that the mandate has several distinct effects on taxpayers behavior first despite the large tax penalty for not having phi coverage relative to the cost of the cheapest eligible insurance policy compliance with mandate is relatively low the proportion of the population with phi coverage increases by 6 5 percentage points 15 6 at the income threshold where the tax penalty starts to apply this effect is most pronounced for young taxpayers while the middle aged seem to be least responsive to this specific tax incentive second the discontinuous increase in the average tax rate at the income threshold created by the policy generates a strong incentive for tax avoidance which manifests itself through bunching in the taxable income distribution below the threshold finally after imposing some plausible assumptions we extrapolate the effect of the policy to other income levels and show that this policy has not had a significant impact on the overall demand for private health insurance in australia

tax incentives and the demand for life insurance evidence from italy the theoretical literature suggests that taxation can have a large impact on household portfolio selection and allocation in this paper we analyze the tax treatment of life insurance considering the cancellation of tax incentives in italian life insurance contracts for investors with high marginal tax rates and the introduction of incentives for those with low rates using repeated cross sectional data from 1989 to 1998 we find that the tax reforms had no effect on the decision to invest in life insurance or the amount invested the likely explanations are the lack of information and lack of commitment to long term investment

the visible hand race and online market outcomes we examine the effect of race on market outcomes by selling ipods through local online classified advertisements throughout the us each advertisement features a photograph including a dark or light skinned hand or one with a wrist tattoo black sellers receive fewer and lower offers than white sellers and the correspondence with black sellers indicates lower levels of trust black sellers outcomes are particularly poor in thin markets suggesting that discrimination may not survive competition among buyers and those with the most racial isolation and property crime consistent with channels through which statistical discrimination might operate economic outcomes in the us are highly correlated with race but the causal mechanisms underlying these correlations are not well understood in particular it remains unclear how much of the correlation is due to discrimination and how much is due to other characteristics that are correlated with race such as education there is an extensive literature on the effect of race on market outcomes focusing on both labour and goods including housing markets however discrimination is not a monolithic phenomenon and it is important to investigate its extent and causes in a variety of different contexts across which they may differ our study asks the following question when the typical person engages in a consumer transaction usually as a buyer does he or she try to avoid dealing with minority sellers and does she treat minority sellers differently

minimum wage impacts on han minority workers wage distribution and inequality in urban china abstract this paper examines the distributional impacts of the minimum wage on the urban wages of han minority workers and the implications for urban inequality county level minimum wage data is combined with recent proprietary household survey data representative of china s ethnically diverse areas the identification strategy relies on an unconditional quantile regression framework that takes into account policy endogeneity using an instrument variable approach the findings show that minimum wages lead to wage compression along the bottom and middle parts of the urban wage distribution the minimum wage effects are larger for lower skilled workers located in ethnic minority counties or that belong to an ethnic minority group counterfactual analysis further shows that minimum wages help to significantly reduce aggregate urban wage inequality increasing minimum wages from a counterfactual benchmark to their observed levels an average increase of 26 reduces the gini coefficient of wages by 10 12

public goods and the value of product quality regulations the case of food safety abstract the paper examines preferences for product quality regulations our premise is that preferences for product quality regulations derive from preferences for both private and public goods the model is used to explain public attitudes toward a referendum measure to eliminate pesticide residues on food results from a survey of consumers are consistent with the conceptual model and show that preferences for public goods influence support for the product quality regulation the results help explain why consumption behavior is a poor predictor of political behavior and have implications for methods that use voting and market behavior to value public goods

stochastic inflation and the optimal policy of price adjustment this paper analyzes the optimal policy of price adjustment for a monopolistic firm in the presence of stochastic inflation it shows that an increase in the expected rate of inflation or in the cost of price adjustment leads to an increase in the initial real price and a decrease in the terminal real price in each period with a fixed nominal price it also shows that the effects of increased riskiness of inflation are ambiguous

optimal medical treatment under asymmetric information a model is developed of patient doctor interaction under asymmetric information it examines how both the probability of consulting and initial health status are semi endogenously determined by a potential patient determining a threshold health level below which he demands a consultation it is shown that the demand elasticity with respect to socio economic variables is lower the more severe the illness the paper also offers a model of the supply side a distinction is established between uncertainty and asymmetric information between the patient and the doctor after deriving the conditions for an equilibrium of the patient doctor interaction payment systems for achieving medical adequacy and pareto efficiency are analysed

menu costs and the neutrality of money a model of endogenous price adjustment under money growth is presented firms follow s s pricing policies and price revisions are imperfectly synchronized in the aggregate price stickiness disappears and money is neutral the connection between firm price adjustment and relative price variability in the presence of monetary growth is also investigated the results contrast with those obtained in models with exogenous fixed timing of price adjustment

are emily and greg more employable than lakisha and jamal a field experiment on labor market discrimination we study race in the labor market by sending fictitious resumes to help wanted ads in boston and chicago newspapers to manipulate perceived race resumes are randomly assigned african american or white sounding names white names receive 50 percent more callbacks for interviews callbacks are also more responsive to resume quality for white names than for african american ones the racial gap is uniform across occupation industry and employer size we also find little evidence that employers are inferring social class from the names differential treatment by race still appears to still be prominent in the u s labor market jel j71 j64

a clarification of theories and evidence on supplier induced demand for physicians services this article both simplifies and extends the literature on physician induced demand it shows that inducement should be expected in all imperfectly competitive markets that are also characterized by incomplete agency relationships more important it argues that confusion over the extent of the inducement phenomenon has been created by several contributions that fail to distinguish between the effects of changes in physician population ratios on changes in the individual physician s output and the effects on per capita utilization in particular it demonstrates that by confounding units of analysis the major empirical results found in recent articles by rossiter and wilensky are contradicted by their model their evidence however together with findings from other studies are reinterpreted to suggest that physicians are even more constrained than is generally believed in being able to induce increases in demand

the rise of the modern welfare state ideology institutions and income security analysis and evidence in the 25 year period between 1960 and 1985 there was a great expansion of welfare state programs throughout the west the fraction of gdp accounted for by social expenditures doubled in much of europe and grew by 40 50 in many other oecd nations after 1985 growth in social insurance programs slowed relative to other parts of the economy this paper explores the extent to which institutions and ideological shifts may have accounted for the period of rapid growth for differences in the extent of that growth and for the subsequent reduction in the growth rates of social insurance programs

tax incentives and the decision to purchase health insurance evidence from the self employed the tax reform act of 1986 introduced a new tax subsidy for health insurance purchases by the self employed we analyze the changing patterns of insurance demand before and after tax reform to generate new estimates of how the after tax price of insurance affects the discrete choice of whether to buy insurance we employ both traditional regression models and difference in difference methods that compare changes in insurance coverage across groups around tra86 the results from our most carefully controlled comparison suggest that a 1 percent increase in the cost of insurance coverage reduces the probability that a self employed single person will be insured by 1 8 percentage points

inducing or restraining demand the market for night visits in primary care we analyse the demand for and the supply of night visits in primary care we present a model of general practitioners gps choice between meeting demand by making visits themselves or passing them to commercial deputising services we extend previous models of demand management to allow for demand discouragement as well as demand inducement demand and supply equations are derived and estimated using 1984 1985 1994 1995 panel data for english primary care health authorities demand is not affected by the likelihood that the visit is made by a gp or a deputy suggesting that patients do not perceive these visits as being of different quality the introduction of differential fees for gp and deputy visits in april 1990 led gps to increase their own visits and to reduce the number made by deputies the fee change also led to demand being managed downward where gps used deputies and to demand inducement where they met demand themselves

the effect of implicit contracts on the movement of wages over the business cycle evidence from micro data in this paper we address the question of whether wages are affected by labor market conditions in a manner more consistent with a contract approach than with a standard spot market model from a simple implicit contract model we derive implications about the links between wages and past labor market conditions using individual data from the current population survey and the panel study of income dynamics we find that an implicit contract model with costless mobility describes these links better than either a simple spot market model or an implicit contract model with costly mobility

the demand for preventive medical care the idea that people invest in health capital is an essential part of models of the demand for health but the investment motives behind health decision are often obscured by other factors this empirical paper investigates the demand for adult preventive medical care where the investment motives are relatively clear cut several important results demonstrate the usefulness of the approach first the analysis finds that annual use of two preventive services decreases with age although not the only plausible explanation the results are consistent with individuals shortens over the lifecycle second schooling is found to be an important determinant of demand with the more educated much more likely to use the services neither lifecycle nor schooling effects are consistently found in studies of the demand for culture care finally the empirical analysis also provides additional evidence on the responsiveness of the demand for preventive care to change in insurance coverage an important issue for heal

the impact of increased tax subsidies on the insurance coverage of self employed families evidence from the 1996 2004 medical expenditure panel survey the share of health insurance premiums that self employed workers can deduct when computing federal income taxes rose from 30 percent in 1996 to 100 percent in 2003 data from the 1996 2004 medical expenditure panel survey are used to show that the increased tax subsidy was associated with substantial increases in private coverage among self employed workers and their spouses estimated effects on public coverage and the coverage of children were smaller in magnitude and less precisely estimated simulation results show that much of the post 1996 subsidy increase represented an inframarginal transfer to persons who would have had held private insurance anyway nevertheless increased subsidization expanded private coverage by 1 1 to 1 7 million persons at a cost per newly insured person less than 2 300 in all simulations a cost below that found in simulations of more broadly based subsidies

the demand for hours of labor direct evidence from california california s longstanding requirement that most women receive time and a half pay for workhours beyond eight in one day was extended to men in 1980 analyzing current population survey data from 1973 1985 and 1991 we find that this overtime penalty substantially reduced the amount of daily overtime worked by california men relative to men in other states comparisons that use women to control for california specific shocks show even stronger effects the estimates imply a price elasticity of demand for overtime hours of at least 20 5

determinants of contract duration in collective bargaining agreements the author develops a model incorporating variables that previous studies have hypothesized as determinants of labor contract duration then empirically tests the model using a data set containing

parental and social valuations of child health information abstract we construct an endogenous risk model of the influence of more precise hazard information on the parental demand for child health a 256 observation data set is used to estimate the marginal value to parents and to society of risk information about the future consequences of children s body lead burdens our results indicate that the social value of risk information greatly exceeds the cost of providing it and that parents will purchase too little of this information

are tax subsidies for private medical insurance self financing evidence from a microsimulation model this paper develops an empirical strategy to estimate whether subsidies to private medical insurance are self financing in countries where public and private insurance coexist and the latter covers the same treatments as the former we construct a simulation routine based on a micro econometric discrete choice model that allows us to evaluate the impact of premium changes on the utilization of outpatient and inpatient health care services as an application we estimate the budgetary effects of scrapping a subsidy from the purchase of individual private policies using micro data from catalonia our results suggest that the subsidy is not self financing this result is driven by the fact that private medical insurance holders make concurrent use of public and private services and by the price inelasticity of the demand for private policies

the mis behaviour of the aggregate price level this paper investigates the response of the price level to random monetary shocks through a model of the fixed cost of changing a nominal price it shows that in an inflationary environment an expansionary monetary shock is accommodated faster than a contractionary monetary shock furthermore when the average rate of monetary expansion increases the lag in response to a positive shock decreases the study also proves that the relationship between the expected rate of inflation and the variance of real prices is positive only above a critical level of expected inflation the most striking result in this area appears in the work of caplin and spulber 1987 they show that in the aggregate when inflation is monotone stickiness disappears even when all firms follow a strict s s rule in their model since firms are uniformly distributed discontinuous price adjustment at the firm level does not create stickiness at the aggregate level caballero and engel 1992 extend this analysis to incorporate idiosyncratic shocks they show that in the presence of monotone idiosyncratic shocks the long run stationary distribution of prices is the uniform distribution but in the short run when the distribution of prices is arbitrary aggregate stickiness can result from firms discontinuous price adjustments in the present work the focus shifts i use a model where aggregate stickiness emerges naturally from firms discontinuous price setting to investigate the effects of the rate of inflation on aggregate stickiness this work shows that aggregate stickiness is negatively correlated with the rate of inflation the higher the rate of inflation the less sticky the response of the aggregate price level with respect to positive nominal shocks and the closer the economy approaches the caplin and spulber model therefore when modeling a dynamic inflation tax one must account not only for the decrease in the monetary base but also for the increase in the speed at which the aggregate price level 889

on inflation and real price variability this paper studies the consequences of costly price adjustments for the variability of real prices accompanying inflation for constant elasticity demand and cost of production it is shown that a higher demand a lower cost of production or a lower cost of price adjustment leads to less intertemporal variability of real prices if the marginal cost of production does not increase too fast then the average real price is less than the real price that would prevail in the absence of inflation additionally a higher demand a lower cost of production or a lower cost of price adjustment leads to a higher level of real prices

the impact of state tax subsidies for private long term care insurance on coverage and medicaid expenditures abstract in spite of the large expected costs of needing long term care only 10 12 of the elderly population has private insurance coverage medicaid which provides means tested public assistance and pays for almost half of long term care costs spends more than 100 billion annually on long term care in this paper i exploit variation in the adoption and generosity of state tax subsidies for private long term care insurance to determine whether tax subsidies increase private coverage and reduce medicaid s costs for long term care the results indicate that the average tax subsidy raises coverage rates by 2 7 percentage points or 28 however the response is concentrated among high income and asset rich individuals populations with low probabilities of relying on medicaid simulations suggest each dollar of state tax expenditure produces approximately 0 84 in medicaid savings over half of which funnels to the federal government

a model of physician behaviour with demand inducement we present a model of the physician patient relationship extending on the model by farley farley p j 1986 theories of the price and quantity of physician services journal of health economics 5 315 333 of supplier induced demand sid first we make a case for the way this model specifies professional ethics physician competition and sid itself second we derive predictions from this model and confront them with the neoclassical model finally we stress the importance of considering how sid affects patient welfare in providing an example where physicians ability to induce makes patients better off to evaluate patient welfare we derive approximations of the patients welfare loss due to physician market power in both the neoclassical model and the inducement model

the effect of tax based savings incentives on the self employed abstract the u s individual income tax allows employers to make tax deferred contributions to qualified pension plans for their employees and in the case of the self employed on their own behalf we examine the effect of these tax based savings incentives on the self employed for this purpose we use a panel of sole proprietors constructed from the statistics of income soi individual income tax files for 1985 1989 and 1993 we find that taxes have a substantial effect on both the dichotomous decision to contribute and the amount contributed to tax deferred retirement savings plan by the self employed in general our estimates suggest a tax price elasticity of contributions around 2 0 this finding is surprisingly robust to a number of alternative specifications

does diversity pay race gender and the business case for diversity the value in diversity perspective argues that a diverse workforce relative to a homogeneous one is generally beneficial for business including but not limited to corporate profits and earnings this is in contrast to other accounts that view diversity as either nonconsequential to business success or actually detrimental by creating conflict undermining cohesion and thus decreasing productivity using data from the 1996 to 1997 national organizations survey a national sample of for profit business organizations this article tests eight hypotheses derived from the value in diversity thesis the results support seven of these hypotheses racial diversity is associated with increased sales revenue more customers greater market share and greater relative profits gender diversity is associated with increased sales revenue more customers and greater relative profits i discuss the implications of these findings relative to alternative views of diversity in the workplace

why beauty matters we decompose the beauty premium in an experimental labor market where employers determine wages of workers who perform a maze solving task this task requires a true skill which we show to be unaffected by physical attractiveness we find a sizable beauty premium and can identify three transmission channels a physically attractive workers are more confident and higher confidence increases wages b for a given level of confidence physically attractive workers are wrongly considered more able by employers c controlling for worker confidence physically attractive workers have oral skills such as communication and social skills that raise their wages when they interact with employers our methodology can be adopted to study the sources of discriminatory pay differentials in other settings

social identity and preferences social identities prescribe behaviors for people we identify the marginal behavioral effect of these norms on discount rates and risk aversion by measuring how laboratory subjects choices change when an aspect of social identity is made salient when we make ethnic identity salient to asian american subjects they make more patient choices when we make racial identity salient to black subjects non immigrant blacks but not immigrant blacks make more patient choices making gender identity salient has no effect on intertemporal or risk choices

contract adjustment under uncertainty abstract consider trade in continuous time between two players the gains from trade are divided according to a contract and at each point in time either player may unilaterally induce a costly adjustment of the contract players payoffs from trade under the contract as well as from trade under an adjusted contract are exogenous and stochastic we consider players choice of whether and when to adjust the contract payment we show that there exists a nash equilibrium in thresholds where each player adjusts the contract whenever the contract payment relative to the outcome of an adjustment passes the threshold there is strategic substitutability in the choice of thresholds so that if one player becomes more active by choosing a threshold closer to unity the other player becomes more passive

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

mark pauly on welfare economics normative rabbits from positive hats mark pauly s pauly 1994a editorial comment on labelle et al 1994a sows seeds whose harvest is a dangerous confusion of intellectual categories out of that confusion he dismisses as irrelevant an approach to the evaluation of social arrangements in health care that we and many others consider a useful normative framework and that is increasingly widely used this abstract was borrowed from another version of this item

fringe benefits and inequality in the labor market 1 introduction wage inequality has been the topic of much recent empirical research similarly inequality in the distribution of fringe benefits has also been studied 1 on the whole the vast majority of research on inequality has examined wages and fringe benefits separately even though the cross sectional relationship between the two has been emphasized and analyzed in terms of the theory of equalizing differences rosen 1986 states the equalizing difference model is built upon the simple and intuitively compelling idea that it is the combination of wages and job attributes that constitute the relevant price of labor for market analysis of jobs thus inequality analysis based on either wages or fringe benefits alone can overlook the interaction between them and be misleading given equal productivity workers would trade fringe benefits for higher wages and vice versa however across different levels of productivity skilled workers will demand more fringe benefits simply because the benefits are normal goods moreover fringe benefits unlike wages are not taxed and skilled workers who face higher marginal tax rates are likely to demand more fringe benefits overtime one can expect the discrepancy between wages and compensation to grow because wages represent a smaller fraction of compensation 2 a few studies show potential biases in measured inequality when wages are used instead of compensation 3 however the inequality of fringe benefits at the level of the individual workers can be analyzed by focusing on the coverage rate of health insurance and pensions without knowing the monetary value of them due to data availability 4 moreover even though compensation inequality can be analyzed when the monetary values of fringe benefits are available it can be analyzed only at the level of the industry or job not at the level of the individual worker this research is different in that it uses individual level data with imputed monetary values for fringe benefits to analyze inequality in the labor market at a point in time and its growth over time deeper investigation has been conducted within the distribution to ascertain how each group is affected when fringe benefits are accounted for several alternative explanations of the observed discrepancies between wage inequality and compensation inequality are further assessed the remainder of this article is organized as follows section ii describes in detail the data used in this study section iii supplies the empirical results possible explanations for which are explored in section iv section v provides a conclusion ii data the lack of suitable data has precluded analysis of compensation inequality despite widespread interest in the topic until now no data set has contained information on both the demographic characteristics of workers and the monetary value of fringe benefits however such a data set has been created by merging individual level data from the current population survey cps and industry level data from the chamber of commerce s employee benefits survey bbs the march supplement of the cps for 1988 to 1995 supplies information on age gender years of schooling occupation of employment industry of employment wages weeks worked health insurance and pension coverage and imputed monetary value of health insurance for the year preceding the march survey year this annual survey is the largest source of information on fringe benefits and first included questions on health insurance and pension coverage in 1980 although the questionnaire items regarding health insurance were changed twice in survey years 1988 and 1995 i mitigate the problem by restricting the sample to workers ages 25 to 54 the group that the census bureau reports is the least likely to be affected gruber and poterba 1994 and by restricting the survey years to 1988 onward to focus on employer provided own health insurance coverage which is also less likely to be affected by the changes in the cps questionnaire on health insurance coverage

does price affect the demand for information about new health technologies evidence from a field experiment in nigeria we study how prices influence the demand for information about a new preventative health technology we conducted a field experiment in nigeria where women were offered the opportunity to get screened for cervical cancer at baseline 2 3 of women had no knowledge of cervical cancer screening field staff made house calls to give women information about the test and also distributed vouchers that randomly varied the price of screening at the point of service we find an inverse u shaped relationship between prices and the demand for information going from zero to a small positive price increased the demand for information about the test but increasing the price further by 100 resulted in a net decrease in the demand for information we argue that these results have interesting implications for the debate about the pricing of new health technologies in developing countries

inflation uncertainty and contract duration this study examines the determinants of the duration of u s union contracts using a longitudinal contract data base support is found for the hypotheses that 1 inflation uncertainty reduces contract length and that 2 greater contracting costs as proxied by a strike variable and by previous duration increase contract length in addition contract duration is found to be greater for indexed contracts to be procyclical and to have increased over the sample period copyright 1989 by mit press

the welfare impact of hmo mergers abstract this paper estimates the welfare consequences of hmo mergers using data from california s small group market the analysis estimates the parameters from a differentiated products demand system the parameters are then used to simulate the effects of several hmo mergers by solving for the nash equilibrium in prices under different ownership structures even small mergers in moderately concentrated markets can result in significant consumer surplus reductions however these welfare losses can be offset by large efficiency gains the welfare consequences of hmo mergers turn less upon demand side considerations than on the health plan s ability to realize efficiencies

the theory and econometrics of health information in cross sectional nutrient demand analysis understanding the role of health information in food and nutrient demand has become an important issue over the last decade endogeneity and measurement error are two empirical problems that are inherent in this type of analysis while some type of instrumental variables estimation would appear the obvious solution this article provides several theoretical and empirical reasons why this is not the case in cross sectional analysis an alternative estimation strategy is pursued an empirical example is given and the implications are discussed copyright 2001 oxford university press

on the determination of the us aggregate health care expenditure per capita real health care expenditure is examined against three major groups of explanatory variables economic demographic and health stock and it is found that the three groups of variables have an impact on real health care spending other subcategories such as real private and government health care pharmaceutical dental home nursing ambulatory personal medical consumption and in patient expenditures have also been examined and have been found to be affected by the explanatory variables for several subcomponents there is evidence of supplier inducement of the demographic group of variables the ageing population had an impact only on the per capita real overall and private health care outlay and pharmaceutical spending also cointegrating relationships were found and consistent estimators of the elasticities found

the rigidity of prices this paper uses evidence on individual transaction prices to analyze price behavior the evidence shows that for many transactions pricesremain rigid for periods exceeding one year the rigidity of price ispositively correlated with industry concentration for several productsthe correlation of price changes across buyers is low the paper alsoinvestigates the relationship between price rigidity price change andthe length of time a buyer and seller have been doing business together the author interprets the evidence as emphasizing the importance of nonprice rationing and the inadequacy of models in whichprice movements alone clear markets copyright 1986 by american economic association

more information is not always better the case of voluntary provision of environmental quality this paper adds to the literature on the voluntary provision of public goods by showing that the warm glow that individuals gain depends on the perceived relative effectiveness of contributions we use a new survey on pro environment behaviors attitudes and knowledge and find that individuals act in accordance with their beliefs regardless of whether or not these beliefs are accurate and engage more frequently in activities that have a higher perceived impact on environmental quality we find that low provision of the public good is greater among people who believe they cannot do much for the environment and do not consider themselves environmentalists

the effect of patient s asymmetric information problem on elderly use of medical care it has been proposed that the patient s relative ignorance about medicine asymmetry of information between doctor and patient should place a patient in a disadvantaged position when purchasing medical care even if rapidly developing information technologies can enhance the patient s access to health information a patient doesn t have enough ability to understand interpret and evaluate it so the doctor s effort at sincerely helping patient understand and utilize health information by effective communication with patient might improve the patient s asymmetric information problem and affect the patient s use of medical care by way of its being a source of patient s solid trust on doctor this research seeks to determine whether a doctor s effort mentioned earlier can affect the elderly use of medical care this study used data from a survey sample of people aged more than 65 living in seoul and chuncheon korea the results suggest the doctor s effort level has a statistically significant positive

an institutional and evolutionary perspective on health economics neoclassical theoretical approaches dominate modern health economics however the peculiarities of healthcare provision are so unusual that neoclassical theory is especially unsuited to the area even mainstream health economists often abandon paretian welfare considerations to focus on needs instead problems relating to uncertainty and externalities are also widely acknowledged this article shows that there are additional important pecularities of healthcare that are relatively neglected in the literature some of these concern healthcare needs while health itself is a universal need needs for healthcare provision are largely involuntary varied and idiosyncratic these issues have important consequences for the planning of healthcare systems and the extent of transaction costs in any market based system these factors combined with the inherent dynamism of modern healthcare needs and capabilities make institutional and evolutionary approaches especially suitable for healthcare economics

optimum pricing policy under stochastic inflation we describe aggregate inflation as a stochastic process in which the rate of change of the price level can be positive or zero where the times spent in each state are of random duration this class of processes includes two state markov chains and renewal processes as special cases it is shown that the optimal pricing policy of a monopolistic firm with non convex costs of price adjustment is s s in its real price i e its nominal price relative to the price level a basic certainty equivalence result is proved i e the firm behaves as if it faces a certain and fixed rate of inflation higher than the actual expected rate the difference between the two rates being a risk premium which depends on the real interest rate and the parameters of the stochastic process one can thus apply previous results from the case of certainty sheshinski and weiss review of economic studies 1977 to obtain comparative static results in particular one finds that an increase in the variance of expected inflation leads firms to choose a pricing policy with larger amplitude in real price the paper also addresses the question of consistency in firms expectations when the price level is determined by the firms actions in this paper we consider pricing policies of individual firms in an inflationary environment each firm expects the general price level to increase and must determine the rate of increase of its own price it is assumed that the firm incurs an adjustment cost when it changes its nominal price consequently firms choose to change prices occasionally rather than continuously

private insurance subsidies and public health care markets evidence from canada in this study i examine the effects of government subsidies to employer provided health insurance on the decision to purchase insurance and on utilization of publicly funded health services using unique variation in tax subsidies across canadian provinces as an instrument i estimate the effects of these subsidies on the demand for supplemental health insurance and their extended effects on the decision to use publicly funded health services my results show that government subsidies through tax exemptions have significant effects on the decision to purchase insurance furthermore additional insurance policies lead to moral hazard in the use of publicly funded health services jel classification h2 h4 11

the normative economics of health care finance and provision whereas in many countries the crisis in medical care has been seen in terms of excess spending on health services in the uk it has been seen at least by most of those who manage and work in the nhs as a crisis of underfunding this has come about as the result of the government s successful attempts to restrain the rate of growth of real spending on the nhs which in turn reflects the government s belief that its principal effective weapon against what it perceives to be inefficiency in the nhs is to challenge management itself reformed and to some extent liberated by systematic financial squeezes the same concern has given rise to a host of proposals for reform of the nhs most of which involve a much greater role for private insurance private finance of other kinds such as out of pocket payments and private provision of health care itself

the treadmill effect in a fixed budget system abstract we examine the interaction in the market for physician services when the total budget for reimbursement is fixed physicians obtain points for the services they render at the end of the period the budget is divided by the sum of all points submitted which determines the price per point we show that this retrospective payment system involves compared to a fee for service remuneration system a severe coordination problem which potentially leads to the treadmill effect we argue that when market entry is possible a budget can be efficiency enhancing if in addition a price floor is used

physician response to fee changes with multiple payers this paper develops a general model of physician behavior with demand inducement encompassing the two benchmark cases of profit maximization and target income behavior it is shown that when income effects are absent physicians maximize profits and when income effects are very strong physicians seek a target income the model is used to derive own and cross price expressions for the response of physicians to fee changes in the realistic context of more than one payer under the alternative behavior assumptions of profit maximization and target income behavior the implications for public and private fee policy and empirical research on physician response to fees are discussed

how health insurance affects health care demand a structural analysis of behavioral moral hazard and adverse selection individuals with health insurance use more health care one reason is that health care is cheaper for the insured additionally having insurance can encourage unhealthy behavior via moral hazard previous work studying the efiect of health insurance on medical utilization has mostly ignored behavioral changes due to having health insurance and how that in turn afiects medical utilization this paper investigates the structural causal relationships among health insurance status health behavior and medical utilization theoretically and empirically and separates price efiects from behavioral moral hazard efiects also distinguished are the extensive vs intensive margins of insurance efiects on behavior

schooling health knowledge and obesity the connection between schooling and health is well documented an important empirical issue that needs to be examined however is whether schooling s effects are due to individual health knowledge differences this empirical study examines this issue with an increasingly important health indicator obesity since provision of health knowledge is a major tool of public agencies promoting health this empirical study uses a new direct measure of health knowledge to test this hypothesis the results show that knowledge is inversely related to the probability that an individual is obese schooling s effects on relative weight and the probability of being obese are explained by differences in knowledge this result may imply that schooling s effect on the allocative efficiency of the household production of health is the main reason schooling is linked to health behaviour the result also may imply that the most effective method of health education is to highlight the disease element of poor dietary habits a

a comparison of alternative models for the demand for medical care we have tested alternative models of the demand for medical care using experimental data the estimated response of demand to insurance plan is sensitive to the model used we therefore use a split sample analysis and find that a model that more closely approximates distributional assumptions and uses a nonparametric retransformation factor performs better in terms of mean squared forecast error simpler models are inferior either because they are not robust to outliers e g anova anocova or because they are inconsistent when strong distributional assumptions are violated e g a two parameter box cox transformation

marginal tax rates and tax favoured pension savings of the self employed evidence from sweden in recent years the study of how individuals respond to policies that aim at promoting pension savings has emerged as a vital area of economic research this paper adds to this body of literature by estimating the tax price elasticity of contributions to tax favoured pension savings accounts on a population of self employed individuals i exploit a unique total database over the swedish population that covers the years 19992005 using instrumental variables i obtain a tax price elasticity estimate of 0 51 and an income elasticity estimate of 0 13 whereas ordinary least squares ols produces estimates that conflict with consumer theory

tax credits insurance and the use of medical care the personal income tax systems in canada the united states and elsewhere permit deductions or tax credits for out of pocket health care expenditures and private medical insurance premiums little is known about the effects of such tax measures on individual behaviour in contrast to the extensive research on the tax exemption for employer provided health insurance in this paper we exploit variation in the after tax cost of health expenditures under the tax law to estimate the tax price elasticity of demand for prescription drugs health insurance and other eligible expenditures we find evidence of moderate to large tax price elasticities compared with traditional point of service price elasticity estimates despite the apparent differences in the way tax subsidies are experienced by consumers in contrast we find no evidence the tax subsidy affects demand for health insurance on the intensive margin which we show is consistent with the theory of optimal self insurance we discuss the implications of our results for recent proposals to reform public and private health insurance systems jel classification i1 h2 credits d impot assurance et l utilisation des soins medicaux les systemes d impot sur le revenu des particuliers au canada aux etats unis et ailleurs permettent des deductions ou credits d impot pour les depenses directes en soins de sante assumees par les particuliers ou pour les primes d assurance privee on connait mal les effets de ces mesures fiscales sur le comportement des personnes par comparaison avec les resultats extensifs de la recherche sur les effets des exemptions fiscales pour l assurance sante fournie par les employeurs dans ce texte on utilise la variation dans le fardeau des depenses pour la sante apres impot selon les diverses juridictions pour evaluer l elasticite de la demande de medicaments d ordonnance de l assurance sante et d autres depenses eligibles en reponse a des differences de prix fiscaux on decouvre que l ordre de grandeur des elasticite se situe entre moderee et grande quand on les compare aux evaluations des elasticites traditionnelles de la demande aux points de service par rapport aux prix et ce malgre les differences apparentes dans les experiences de ces subventions fiscales pour les consommateurs d autre part on ne trouve pas de support pour l hypothese que les subventions fiscales affectent la demande d assurance santea la marge intensive ce qui concorde bien avec ce que nous enseigne la theorie de l auto assurance optimale on discute les implications de ces resultats pour certaines reformes recentes proposees aux systemes d assurance sante prives et publics