the optimal threshold for a value added tax abstract one of the key features of a value added tax and often one of the most contentious is the threshold level of turnover at which firms are obliged to register for the tax despite its importance however the question of the appropriate level at which to set this threshold has received little analytical attention this paper first develops a simple rule characterizing the optimal threshold when firms sizes are fixed in terms of a trade off between tax revenues and collection costs it then considers in principle and by simulation the implications for the optimal threshold of the production inefficiencies implied by the differential treatment of those above and below the threshold

applied general equilibrium models of taxation and international trade an introduction and survey we wish to acknowledge the help of three referees and of john pencavel on several earlier drafts as well as the assistance of the modelers whose work is referred to in the paper they corrected our lack of understanding of their work and provided many other helpful comments excellent research and bibliographical assistance have been provided by debbie fretz radwan shaban and janet stotsky helpful comments have been made by charles ballard michael boskin lans bovenberg sylvester damus harvey galper glenn harrison gordon lenjosek jack mutti serena ng t n srinivasan charles stuart and eric toder the authors also acknowledgefinancial support from the national bureau of economic research the national science foundation international business machines and the social sciences and humanities research council ottawa canada

some evidence on selecting an intermediate target for monetary policy the purpose of monetary policy is to influence the evolution of the economy this influence may be expressed in the oft heard phrases of reducing inflation promoting real economic growth and lowering unemployment these are the goals of policy action how are these goals to be achieved the federal reserve is limited in its power in that there are only a few policy vehicles over which it exercises dominance although the main policy instrument of the fed has differed over time during the past few decades fed policy has been exerted primarily through its control of the banking system s reserves via open market operations the difficulty faced by the policymaker is to know just what effect the changes in the instruments are having on the economy since data on the goal variables generally are received with a lag it is useful to find an intermediate variable that is more timely in its availability and that acts as a good proxy for the goal variable in other words changes in the intermediate variable should reliably predict changes in the goal measure if however a measure is unduly influenced by the goal variable then its usefulness in policy decisions is diminished greatly this is because movements in the intermediate measure might emanate from policy actions from changes in the goal measure or both for a measure to be useful as an intermediate target therefore it should have the feature of being exogenous or causally prior to the goal variable in addition to having minimal feedback from the goal measure the intermediate target measure also should respond predictably to changes in the direction of policy for example an intermediate target that responds randomly to changes in the policy instrument

the demand for home produced and imported alcoholic beverages in cyprus the aids approach the purpose of this paper is to investigate the demand and its composition between home produced and imported for alcoholic beverages in cyprus the methodological approach used is the almost ideal demand system aids both in static and dynamic terms empirically the aids both in its static and dynamic version was estimated using time series 1970 1992 for three sets of data which include 1 alcoholic beverages wine beer other brandies broken down between home produced and imported model a 2 alcoholic beverages only without disaggregation between home produced and imported model b and 3 aggregate alcoholic beverages wine beer other brandies and food model c zellner s iterative estimation procedure was used for estimating the model the empirical findings 1 strongly support the dynamic version of the aids over its static alternative and 2 provide certain guidelines concerning economic policies relating to an increase in government revenues and changing the composition between

financial incentives and retirement evidence from federal civil service workers we examine the retirement behavior of federal civil service workers employed by the department of defense these workers provide an interesting population for studying retirement because they face relatively simple financial incentives high quality administrative data are available and they are not covered by the social security system we find that these workers respond to their financial incentives in a similar manner to what others have found when analyzing much different retirement systems we also find no evidence of excess retirement at key ages of the social security system which does not support the existence of societal wide norms regarding retirement

cost structure and productivity growth in european railway systems the purpose of this paper is threefold first to empirically investigate the coststructure of the railway systems in ten european countries belgium denmark france germany greece italy luxembourg the netherlands portugal and the united kingdom of the european union second to provide measures of economies diseconomies of scale and fully investigate the manner by which economies of scale have affected the cost structure of the system and have been affected by the growth in input prices and technology and third to measure economic efficiency and identify its sources in achieving this purpose the translog technology has been used and the translog model was estimated using time series data covering the period 1969 1993 zellner s iterative method was used in estimating the translog model

the demand for domestic and imported alcoholic beverages in ontario canada a dynamic simultaneous equation approach the purpose of this paper is to estimate simultaneously dynamic demand functions and consequently income and price elasticities for domestic and imported alcoholic beverages for the province of ontario the methodology used is the almost ideal demand system originally developed by deaton and muellbauer 1980 augmented by pollak s 1970 habit formation hypothesis the empirical application uses time series 1958 1987 for imported and domestically produced spirits wine and beer the findings provide strong support favouring the dynamic version of the almost ideal demand system over its static alternative but little evidence of strong substitution between domestic and imported products

the joint choice of retirement age and postretirement hours of work in this paper we develop and estimate the first complete and internally consistent model of the effect of social security on the labor supply of the aged we develop a simple life cycle model that captures the effect of social security on the joint choice of the date of retirement and hours of work immediately after retirement we show that in the presence of social security the budget constraint relating these choices is highly complex and nonlinear and we develop a maximum likelihood procedure for the model that yields consistent parameter estimates our procedure avoids the selectivity biases present in prior studies that have ignored the nonlinearity of the constraint or have examined only self selected subsamples that exclude nonretirees our results show that social security has a significant though relatively small effect on the age of retirement and postretirement hours of work and that the effect of social security grows with advancing age

reforming indirect taxes in canada some general equilibrium estimates the current indirect tax system in canada distorts economic activity in a variety of ways and has been the subject of considerable discussion as part of overall tax reform in this paper a general equilibrium model is used to analyze various changes in indirect taxes in canada focusing on possible changes to the federal and provincial sales taxes results suggest that replacing either the federal or provincial sales taxes with a broadly based sales tax yields a small but significant welfare gain the distributional effects from these changes are slightly regressive but appear to be quite small and easily offset by modest income tax credits targeted to low income households results also suggest that a broad based sales tax would be a significantly more efficient revenue source should additional sales tax revenues be required

consumption patterns of food tobacco and beverages a cross country analysis this study considers the consumption patterns of food tobacco soft drinks and alcohol in 43 developed and developing countries such an analysis is important for policy issues associated with tobacco alcohol and soft drinks the results show that consumers in the developing countries spend a much higher proportion of their income on food than consumers in developed countries the proportion of expenditure allocated to the other three commodities tobacco alcohol and soft drinks are similar in the two groups of countries on average people around the world allocate about one quarter of their income on food 2 6 on tobacco 3 2 on alcohol and 1 2 on soft drinks the income elasticity estimates reveal that food is a necessity in most countries while tobacco and alcohol are necessities in most of the developed countries and luxuries in a majority of developing countries soft drinks are a luxury in a majority of the developing as well as the developed countries the own price elasticities show th

aggregate industrial energy consumer response to wholesale prices in the restructured texas electricity market abstract the aggregate response of consumers to wholesale price signals is very limited in the restructured electric reliability council of texas ercot market an overall average own price elasticity of demand of 0 000008 for industrial energy consumers served at transmission voltage is estimated using a symmetric generalized mcfadden cost function model to date ercot has sought to promote demand response to price signals without reliance on stand alone demand response programs but with a market structure that is designed to facilitate economic demand response this very limited responsiveness to wholesale price signals may prove problematic in light of policy decisions to pursue an energy only resource adequacy mechanism for ercot

the dynamics of job separation the case of federal employees summary in this paper we develop a model of workers quit decisions using panel data on a sample of us federal government employees we use maximum likelihood techniques to determine how much of the observed decline in quits with job tenure is a result of declining individual quit propensities state dependence rather than dynamic sample self selection heterogeneity the latter is found to be much more important than the former the effects of relative federal government wages and other variables on quits are also estimated the results are useful for analysing federal compensation policies

impacts of code share alliances on airline cost structure a truncated third order translog estimation abstract the airline industry has undergone significant changes following deregulation more than a decade ago a prominent development in recent years has been the proliferation of airline alliances an important question arises are alliances cost savings or competition reducing this paper addresses the first part of the question however the answer has bearing on the second part as well since results in industrial economics suggest that unless a merger or alliance can substantially reduce costs consumers are unlikely to enjoy lower prices e g farrell j and c shapiro 1990 horizontal mergers an equilibrium analysis american economic review 80 1 107 26 this paper estimates a truncated third order translog cost function using quarterly firm level data of 10 airlines for the period 1994qi to 2001qi using the estimated function we assess whether alliances have any impacts on costs and if so the extent to which the cost structure of airlines are affected it is found that the truncated third order translog is an appropriate specification and alliances do appear to lower costs however while the impacts are statistically significant in economic terms the magnitude appears to be immaterial

double dipping the combined effects of social security and civil service pensions on employee retirement we consider the retirement behavior of civilian employees of the united states government unlike previous studies this investigation is based upon a data set containing fairly complete and accurate information about the social security and employer provided pensions for which employees are or ultimately will be eligible these data permit us to specify the financial aspects of individual retirement decisions with a reasonable degree of precision a large fraction of civil service pensioners is eligible to receive social security benefits because a part of their working careers was spent in social security covered employment the prevalence of double pension coverage among government employees has raised serious equity questions about the treatment of civil servants by social security and these questions have led to various suggestions for pension reform partly the reform proposals have been put forward due to the perceived unfairness of double dipping which arises from the double pension coverage of government employees our analysis finds 1 both the amount of a federal pension entitlement and the expected wait until the pension commences affect the timing of retirement from the federal service 2 the rate of anticipated wage growth significantly affects individual decisions to remain in federal employment 3 workers who are eligible to ultimately receive social security in some cases show a different pattern of retirement than do workers not vested in social security however our analysis does not reveal any massive shift of federal workers into social security covered employment in order to benefit from the tilt in the social security formula this abstract was borrowed from another version of this item

decomposition of the fisher ideal index of productivity a non parametric dual analysis of us airlines data in this paper we offer a non parametric method of decomposing the fisher ideal index of productivity into individual factors measuring i technical efficiency change ii allocative efficiency change iii shift in the cost function iv scale economies due to output change and v an adjustment factor reflecting change in the output attributes cross section data from the us airline industry for the years i 983 and i 984 are utilised in an empirical application illustrating this method the rate of multifactor productivity growth mfpg over time in the single output multiple input case can be measured by the difference in the rates of growth in the quantity of output and the divisia index of input quantity when no technical inefficiency exists this rate of mfpg can be decomposed into two additive components i the rate of technical change measuring the rate of change in the volume of output holding the input bundle unchanged and ii a returns to scale effect showing change in productivity with changes in the input quantities without technical change when technical efficiency varies over time a part of the measured rate of mfpg would be due to efficiency

turnover statistics and federal government balances in money supply targets in the middle of the last decade congress mandated that the federal reserve announce its goals for monetary aggregates this increased emphasis on aggregates combined with the more recent financial innovations and deregulation has led to considerable discussion about the best monetary aggregate today arguments abound for every conceivable money stock or credit aggregate ranging from davidson and hafer s support of m i 5 to friedman s support of total net credit 7 given such a range of disagreement one can empathize with the frustration that prompted a congressional committee to ask can we identify a particular conception of money ml m2 or whatever with sufficient precision to allow its use as a proxy for economic performance a promising approach to the resolution of this problem has been the substitution of weighted sum monetary aggregates for the conventional simple sum aggregates in a simple sum aggregate each component is assigned a weight of one for instance one dollar of currency carries the same weight as one dollar of passbook savings but in the divisia aggregate approach 2 each component is assigned a weight which is proportional to the opportunity cost of holding that financial asset consequently a dollar of currency which earns no interest carries greater weight than a dollar of passbook savings the higher cost of holding currency directly reflects the value of its services as a medium of exchange the basic function of money a study by spindt 19 uses a second weighting system based on turnover statistics the basic assumption is that the more often a financial asset changes hands the greater its services as a medium of exchange using a st louis type reduced form model spindt discovered that his turnover weighted aggregate bore a closer relationship to gnp than did the federal reserve s mi in his detailed analysis spindt estimates some time series that are not directly measured for example the turnover of currency as a result he does not advocate the substitution of his aggregate index for the conventional aggregates nevertheless he does point out that the integration of the turnover statistics may be helpful in explaining certain anomalies in the behavior of the conventional aggregates 19 24

the choice among monetary aggregates as targets and guides for monetary policy difficulties in meeting its monetary targets led the federal reserve in october 1979 to adopt a new operating procedure to achieve firmer control over monetary aggregates yet the inflationary environment has fostered financial developments that affect the behavior of the traditional monetary aggregates and that raise questions whether different aggregates may not be better this paper compares the various monetary aggregates for their usefulness as guides for monetary policy in the light of recent financial developments the criterion of usefulness is the ability to influence and predict gnp growth this ability is tested in two ways first by the stability of the velocities of the monetary aggregates and second by the advance information they provide of gnp growth it is presumed that the aggregates with the most stable velocities make the best targets for monetray policy and that those containing the most advance information make the best guides for policy the paper has three main sections the first discusses the criteria for using monetary aggregates as targets and guides the second two sections describe and report tests of the various monetary aggregates as targets and guides a summary of findings is presented as a final section

technology and efficiency in a panel of italian dairy farms an sgm restricted cost function approach this article employs a short term specification of the symmetric generalised mcfadden sgm cost function capable of accommodating quasi fixed factors and variable returns temporary equilibrium and scale economies are investigated while maintaining the consistency of the estimated model with microeconomic theory and approximation properties it also makes use of a two step procedure to estimate first the technology parameters and then time varying efficiency at farm level no distributional assumptions are required on efficiency as we consider a fixed effect model a balanced panel of italian dairy farms during the years from 1980 to 1992 serves as the case study the results suggest a rigid productive structure during the pre and post quota period moreover italian milk producers are found to exhibit considerable excess capacity and rather low input technical efficiency

estimation of output and input technical efficiency using a flexible functional form and panel data the farrell 1957 concept of technical efficiency can be measured in two ways denoted output and input technical efficiency the empirical literature does not distinguish between the two measures and confusion exists regarding the required restrictions on technology for the specification of either measure with panel data the authors show how both types of efficiency when treated as fixed effects are to be specified in the context of a translog cost system technical efficiency enters the share equations only in the output case when homotheticity is not imposed the authors estimate their cost systems using panel data on u s airlines copyright 1994 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

complementarity status similarity and social capital as drivers of alliance formation using data on u s investment banking firms syndication in underwriting corporate stock offerings during the 1980s this study explores the factors that drive alliance formation between two specific firms we compare resource complementarity status similarity and social capital as a basis of alliance formation the findings indicate that the likelihood of investment banks alliance formation is positively related to the complementarity of their capabilities as well as their status similarity social capital arising from banks direct and indirect collaborative experiences also plays a very important role in alliance formation the number of deals given by a lead bank to a potential partner over the past three years has an inverted u shaped relationship to the probability that the lead bank will invite the potential partner to form an alliance our findings indicate that status similarity and social capital have a stronger effect on alliance formation in initial public offering deals than in secondary offering deals as the former are more uncertain than the latter using these findings we discuss the role of complementarity status similarity and social capital in alliance formation copyright 2000 john wiley sons ltd

fringe benefits and labor mobility interindustry factor mobility is a crucial determinant of the income distribution effects of exogenous changes in relative commodity prices this examination of interindustry variation in wages and profits using data from manufacturing industries from

economic effects of vat reforms in germany in the tax policy debate differentiation of value added taxes is often justified by distributional concerns our quantitative analysis for germany indicates that such concerns are misplaced we find that the abolition of vat differentiation has only negligible redistributive effects instead reduced vat are found to act as industry specific subsidies whereas the overall welfare effects of pure vat reforms are very small a revenue neutral introduction of a harmonised vat combined with reductions in the marginal income tax rates or social security contributions turns out to produce substantial welfare gains for all households

evaluating transfer programmes within a general equilibrium framework we develop a general equilibrium model for evaluating domestically financed transfer programmes and derive analytical expressions which provide a framework for combining results from a computable general equilibrium model with disaggregated household data we separate the welfare impact into three components i e redistribution reallocative and distortionary effects we show how these are subsumed within one parameter the cost of public funds using a mexican programme for illustration we show that substantial welfare gains result from a switch from universal food subsidies to targeted transfers reflecting both the improved targeting efficiency of the latter and the relaxation the trade off between equity and efficiency when designing tax systems in an attempt to maximise the welfare impact of government transfers on lowincome households many governments in both developed and developing countries have moved towards better targeted transfer programmes in developed countries these transfers mostly take the form of cash transfers or tax credits whereas in developing countries they take the form of either cash transfers e g in latin america or infra marginal subsidised food rations e g in south asia l when evaluating the economic impact of such transfers it is useful to separate these into direct and indirect income or welfare effects the direct income effects reflect the design of the programme i e the rules for targeting transfers these are often referred to as first round effects and are captured by partial equilibrium approaches to policy evaluation the indirect effects capture the second round income changes brought about by the impact of cash transfers and their financing on the level and composition of demand and supply most evaluations of social safety net programmes focus on the partial equilibrium evaluation of programme targeting outcomes even those that focus on the indirect impacts tend to concentrate on their efficiency implications with only a very limited analysis of income distribution outcomes and with little attempt to combine both the equity and efficiency dimensions this is all the more limiting given that the central objective of these programmes is to improve income distribution in this paper we focus primarily on the indirect income effects in particular we show how the results from a computable general equilibrium model can be combined with the information available in standard household surveys to

a reexamination of returns to scale density and technical progress in u s airlines the logic of protecting u s airlines from competition was initially founded on the belief that substantial economies of scale existed in the industry and that consumers would benefit through among other things regulation of fares regulation of service network and restrictions on entry and exit from the industry however studies 1 7 8 12 have undermined the faith in economic regulation by showing that economies of scale were minimal and competition would promote efficiency in a recent study caves christensen and tretheway 5 estimated returns to scale rts and returns to density rtd for u s airlines based on a panel dataset for 1970 1981 containing trunk and local service airlines they estimated rtd and rts from a translog cost function for airline services like many other applied economists working with translog cost functions they found that the neoclassical curvature or regularity conditions on the cost function are not satisified in almost half of the observations 105 out of 208 in general concavity property is satisfied in the neighborhood of the sample mean if it is chosen as the point of approximation for the cost function but not at points further from the mean recently diewert and wales 6 suggested alternative flexible functional forms which are globally concave in input prices if the concavity property is satisfied at only one point thus if the concavity property is violated imposition of it at a single point will make the function globally concave without destroying flexibility use of such functional forms can avoid violation of regularity conditions of the cost function at extreme points the objective of this paper is to estimate a model of airline costs along the lines of caves christensen and tretheway 5 however we extend their results in several ways first we consider a modest generalization of the symmetric generalized mcfadden sgm cost function developed by diewert and wales by including network and control variables in the airline cost function the sgm cost function is flexible and globally concave in input prices thus our estimates of parameters and measures of rts rtd and technical progress are based on a cost function which is globally concave second we estimate the system of input demand functions instead of the cost function and while estimating these input demand functions derived from the cost minimizing behavior of the airlines we incorporate firm and input specific effects these effects capture possible differences in production technologies among airlines third we intro

network location and learning the influence of network resources and firm capabilities on alliance formation this paper presents a dynamic firm level study of the role of network resources in determining alliance formation such resources inhere not so much within the firm but reside in the interfirm networks in which firms are placed data from extensive fieldwork show that by influencing the extent to which firms have access to information about potential partners such resources are an important catalyst for new alliances especially because alliances entail considerable hazards this study also assesses the importance of firms capabilities with alliance formation and material resources as determinants of their alliance decisions i test this dynamic framework and its hypotheses about the role of time varying network resources and firm capabilities with comprehensive longitudinal multi industry data on the formation of strategic alliances by a panel of firms between 1970 and 1989 the results confirm field observations that accumulated network resources arising from firm participation in the network of accumulated prior alliances are influential in firms decisions to enter into new alliances this study highlights the importance of network resources that firms derive from their embeddedness in networks for explaining their strategic behavior copyright 1999 john wiley sons ltd

comment on the dynamics of job separation the case of federal employees summary this paper recasts the model presented in the dynamics of job separation the case of federal employees as an optimal stopping problem it shows that the individuals represented by the model are assumed to behave suboptimally and illustrates several policy analysis problems introduced by assuming such behaviour

exemption versus zero rating a hidden problem of vat abstract we examine the difference between exemptions and zero rating under a consumption based vat in a numerical general equilibrium model to allow for a better understanding of the accruing efficiency effects we first develop a method to convert the nominal vat rates into effective tax rates on categories of final demand then we show how these effective tax rates can be used to perform a gradual transition from exemption to zero rating

economic determinants of the optimal retirement age an empirical investigation in this paper we examine how the structures of earnings social security and pension benefits affect retirement behavior we use an intertemporal model of labor supply paying special attention to the institutional features of private pensions and social security benefits this theoretical formulation produces comparative dynamic predictions and guides empirical modeling data from a new survey of workers and their income opportunities are used to implement the empirical model on the basis of empirical retirement estimates we conclude that 1 people with higher base wealth retire earlier and 2 those who expect to gain more by postponing retirement retire later

the influence of non pecuniary factors on labor supply the case of navy enlisted personnel this paper expresses the elasticity of labor supply to an occupation in terms of the variances and covariances of the distributions of non pecuniary factors across the alternative occupations we then apply our results to an analysis of reenlistment rates among navy enlisted personnel we argue that those navy skills experiencing a higher incidence of sea duty will have lower pay elasticities this prediction is confirmed empirically using probit analysis

labor turnover in the u s federal bureaucracy this paper presents an empirical analysis of labor turnover in the u s federal bureaucracy the results indicate that job experience in politically important federal agencies is valued by the private sector hence high level bureaucrats employed in these agencies have high turnover probabilities the analysis also shows that equalization of federal sector and private sector wage rates would lead to a relatively small increase in turnover but to substantial savings in federal payroll costs

the effect of separation bonuses on voluntary quits evidence from the military s downsizing this paper analyzes the decision of mid career personnel to voluntarily leave the u s military in response to a financial incentive program a model of the separation decision is tested using data on navy and air force enlisted personnel who were targeted for the buyout in 1992 two alternative estimates are provided one from a fixed effects model and one from a structural annualized cost of leaving model our basic results indicate the financial incentive had a modest effect in inducing additional quits the impact of the separation bonus however was much larger for occupations facing a threat of involuntary layoff

the importance of lifetime jobs in the u s economy though the u s labor market is justly notorious for high turnover and consequent high unemployment it also provides stable near lifetime employment to an important fraction of the labor force this paper investigates patterns of job duration by age race and sex with the following major conclusions 1 the typical worker today is holding a job which has lasted or will last about eight years over a quarter of all workers are holding jobs which will last twenty years or more sixty percent hold jobs which will last five years or more 2 the jobs held by middle aged workers with more than ten years of tenure are extremely stable over the span of a decade only twenty to thirty percent come to an end 3 among workers aged thirty and above about forty percent are currently working in jobs which eventually will last twenty years or more three quarters are in jobs which will last five years or more 4 the duration of employment among blacks is just as long as among whites even though the jobs held by blacks are worse in almost every other dimension they are no more unstable than those held by whites 5 women s jobs are substantially shorter than men s on the average only about a quarter of all women over the age of thirty are employed in jobs which will last over twenty years whereas over half of men over thirty are holding these near lifetime jobs this abstract was borrowed from another version of this item

a short run assessment of the effects of vat on consumption patterns the greek experience the short run effects of value added tax vat on individual commodity prices the consumer price index and the allocation patterns of total consumption expenditures among groups of commodities in greece are evaluated the methodological approach used is based on the static almost ideal demand system aids which was estimated and tested for thirteen commodity groups using time series data 1958 86 the fiml approach was used for the estimation of the aids the model was simulated for the post vat period the principal results indicate that vat has changed the structure of prices and demand altered the pre vat allocation of total consumption expenditures among the groups of goods and services and raised the overall consumer price index

economic implications of alternative allocation schemes for emission allowances political feasibility of emission trading systems may crucially depend on the free initial allocation of emission allowances to energy intensive industries in order to ameliorate adverse production and employment effects we investigate the potential trade off between such compensation and economic efficiency for alternative allocation rules where emission allowances are based on either emissions or output based on analytical partial equilibrium and numerical general equilibrium analysis we show that in open trading systems the trade off becomes the more severe the higher the international permit price is whenever the permit price can be considered exogenous to firms or industries the output based allocation rule is distinctly less costly than the emission based rule to preserve output and employment in energy intensive sectors the reason is that emission based allocation of allowances not only provides an implicit output subsidy but also lowers the effective price of emission inputs to regulated firms emissionbased allocation is particularly expensive towards higher international permit prices where the implicit subsidies to emission use in energy intensive sectors produce drastic efficiency losses since they imply high expenditures for carbon permit imports rather than high net revenues from efficient carbon permit exports

a lower vat rate on electricity in portugal towards a cleaner environment better economic performance and less inequality abstract this article addresses the budgetary economic distributional and environmental impact of increasing the vat on electricity in portugal the analysis is carried out in the context of a new multi sector multi household dynamic general equilibrium model simulation results suggest that a permanent increase from 6 to 23 improves the public budget and albeit marginally co2 emissions but it leads to detrimental economic and distributional effects as the economy in portugal begins to recover after the great financial crisis and the budgetary situation becomes less constraining pressure is mounting for this vat increase to be reversed this mixed bag of results is an important element for the debate reverting to a lower vat is desirable as it would improve economic performance and have positive distributional effects the question is how to compensate for the loss of tax revenues to offset the adverse budgetary effects of a lower vat we consider several revenue raising strategies our simulation results suggest that an offsetting increase in either the general vat tax rate or the tax on petroleum products would yield more favorable effects from all relevant perspectives economic distributional and environmental while mostly keeping intact the budgetary benefits

optimal taxation of capital income in general equilibrium with infinite lives this paper analyzes the optimal tax on capital income in general equilibrium models of the second best agents have infinite lives and utility functions which are extensions from the koopmans form the population is heterogeneous the important property of the models is the equality between the social and the private discount rates in the long run i find that the optimal tax rate is zero in the long run for a special case of additively separable utility functions i then determine the tax rates along the dynamic path and conditions that are sufficient for the local stability of the steady state

transition to entrepreneurship from the public sector predispositional and contextual effects studies of career dynamics implicitly claim that government employees are not entrepreneurial utilizing longitudinal data from the u s panel study for income dynamics we investigate the reasons for the low rate of entrepreneurship from the public sector we conjecture that it is due to labor market matching processes and the bureaucratic nature of public organizations and bureaucratization of individuals our life course analysis identifies labor market matching as a major determinant nonentrepreneurial types choose public sector employment we also uncover tenure and context effects which decrease and increase the hazard rate of entrepreneurial exit respectively whereas the former effect points toward adaptation and internal labor market sorting the latter draws attention to exits due to frustration

monetary vs credit aggregates an evaluation of monetary policy targets the past decade was characterized by increased emphasis upon monetary aggregates as intermediate targets for monetary policy although growth rate ranges were specified for both narrow and broad monetary aggegates as well as for bank credit the primary focus of the federal reserve was on the growth rate of narrow money however some policy makers 19 have recently expressed doubt about the viability of using narrow money as an intermediate target in particular it has been argued that recent financial innovations such as the introduction of the various now accounts the proliferation of money market mutual funds and the adoption of cash management techniques by both firms and consumers to name a few have distorted the ml1 gnp relationship thereby raising the question of whether broader monetary aggegates or even credit aggregates might bear a closer relationship to income furthermore the federal reserve has recently announced growth rate target ranges for a broad credit aggregate in addition to growth rate ranges for ml and m2 2 friedman 7 8 provides a general discussion of these issues while modiglianipapademos 18 provide a theoretical analysis of the conditions under which a credit aggregate is preferred to a monetary aggregate as an intermediate target however nothing conclusive can be said at the theoretical level since the choice between money and credit aggregates depends upon the true underlying structure of the macroeconomy hence the choice among money and credit aggregates is an empirical issue the aim of this paper is to provide evidence on the issue of credit aggregates versus monetary aggregates as intermediate targets for monetary policy the paper evaluates the characteristics of several monetary and credit aggregates in terms of two attributes of a

what are occupational pension plan entitlements worth in britain the acquisition of rights by workers in private pension plans underpins retirement behaviour recruitment policy and wage structure but there is controversy as to how these individual pension rights should be valued the paper combines four data sets to calculate pension entitlements for a sample of 3000 british workers in 1987 expected scheme tenure is a key variable in valuation younger workers and women face greater initial uncertainty as to their pension outcomes which is resolved as job tenure lengthens given the distribution of tenure durations many employees would obtain higher returns in defined contribution schemes than in a typical final salary defined benefit plan

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

social security unanticipated benefit increases and the timing of retirement between 1969 and 1972 real u s social security retirement benefits rose by 20 the rise was unanticipated and followed over 15 years of relatively constant real benefits this paper proposes a model of retirement behaviour in which workers respond differently although in a theoretically consistent manner to the anticipated and unanticipated components of the social security benefit they can receive upon retirement the retirement age decision in the presence of unanticipated benefit changes is shown to be a special case of utility maximization under a nonlinear budget constraint the model is estimated using the longitudinal retirement history survey between 1969 and 1973 real social security benefits for u s workers with fixed earnings histories were raised by more than 20 these increases were the first significant increases in social security since the early 1950 s at the same time that retirement benefits were rising the trend toward early retirement among older american men accelerated in the period from 1965 to 1970 the labour force participation rate of men aged 55 to 64 fell 1 6 percentage points from 84x6 to 83 0 but in the five years after 1970 the rate fell an additional 7 4 points to 75 6 the participation rate of men over 65 fell by 1 1 points in the five years after 1965 but by 5 2 points during the mid 1970 s 1 not surprisingly a large share of this labour force decline has been attributed to the effects of the social security increases enacted in 1969 and 1972 the purpose of this paper is to determine the precise effect of the unanticipated benefit increases on the timing of retirement the effect of social security on the age at retirement has been the subject of lively debate in recent years the literature has been reviewed in two recent papers by mitchell and fields 1982 and hurd 1983 who reach nearly opposite conclusions about the lessons that can be drawn from past empirical research mitchell and fields find that no definite judgment can be reached about the effects of social security on retirement while hurd argues that more careful studies have all found a significant and meaningful effect of social security on early retirement certainly the earlier studies by boskin 1977 and boskin and hurd 1978 found very large social security effects with boskin concluding that the social security system has been the major factor in the explosion in earlier retirement boskin 1977 p 1 very recent studies by burkhauser and quinn 1983 burtless and moffitt 1984 diamond and hausman 1984 fields and mitchell 1984 and hausman and wise 1985 have found smaller social security effects however none of them dealt explicitly with the rapid rise in real benefits during the early 1970 s the approach taken in this paper differs significantly from that in the earlier research just cited the proposed econometric model takes full account of the nonlinear relationship between goods consumption and the age at retirement introduced by social security