uncertainty and optimal taxation in defense of commodity taxes abstract this paper re examines the theory of optimal commodity taxation in the presence of a linear income tax under wage uncertainty there are two categories of goods the consumption levels in one group are committed to before the resolution of uncertainty and those of the other after the paper i characterizes the structure of the optimal commodity taxes in view of the insurance they provide against random wage movements ii proves that optimal taxation requires a mix of differential commodity taxes and a uniform lump sum tax and iii demonstrates that the post uncertainty goods should face a positive tax rate which is higher than the tax rate on the pre committed goods

in search of smoking guns what makes income inequality vary over time in different countries we investigate the forces affecting the distribution of income by analyzing an unbalanced panel of information for 16 industrialized countries for the years 1966 through 1994 income inequality is measured with the gini coefficient of equivalent disposable income individuals are the unit of analysis the statistical analysis uses panel methods the results suggest that many factors affect the development of income inequality some factors are strictly economic a decreased industrial sector generally fosters inequality and some support is found for the view that increased trade of manufactured goods from developing countries is also a factor other forces are outside a strictly defined market sphere low inequality is found when a large proportion of the labor force belongs to a trade union and also when there is a large public sector in addition demographic circumstances are important since the proportion of the population under age 15 has a positive effect on inequality we find however no association between the unemployment rate and inequality

cyclical and political influences on the size distribution of income in the us 1959 1989 the quesion of whether the size distribution of income is subject to cyclical fluctuations in unemployment and inflation has been investigated in several studies in these studies however the fact that unemployment inflation and distribution may be influenced intentionally by policy makers is ignored in order to investigate whether any political influence on the size distribution of income actually exists a model is formulated in which the distribution not only depends on unemployment and inflation but also on a variable representing the political process the model is tested using time series data pertaining to the case of the us in the period 1958 to 1989 the results indicate that inequality tends to be negatively influenced by democratic administrations

some welfare effects of sequential customs union formation this paper deals with the effects on world welfare of sequential customs union formation a computational model of customs union formation is developed and simulated under a variety of assumptions these assumptions concern various characteristics of the world the pattern of customs union formation and gatt restrictions on common external tariffs the results show that unrestricted customs union formation is likely to result in successive deterioration of world welfare despite gains for the member countries collectively an examination of the current gatt guidelines however suggests that if they were vigorously enforced world welfare would rise with customs union formation

the eastern enlargement of the european union this paper examines the prospects and problems of eastern enlargement it argues that considerations of stability and long run prosperity are the primary reasons why the eu has promised to enlarge eastward and why the central and eastern european nations wish to join while high politics prompted this promise opposition from eu special interest groups is likely to delay fulfilment of the promise for many years if this is the case europe should create a series of intermediate steps that would permit the reintegration of europe to proceed apace if a quick enlargement does occur eu politics is likely to become much more complicated the ceecs would have many votes in the council of ministers yet they would be very different economically to the average eu incumbent

optimal wage taxation when human capital and employment are endogenous this paper studies how optimal wage tax conclusions from the classic two period life cycle model of human capital accumulation are affected by endogenizing the number of taxpaying workers in the absence of a corrective policy young individuals underinvest in human capital from a social perspective because tax premiums for transfers to nonworkers are not actuarially adjusted downward for human capital attainment a combination of wage taxes and wage subsidies can restore proper price signals numerical simulations suggest that even modest employment elasticities can be sufficient to substantially impact the magnitudes and even the signs of optimal wage tax rates jel h21 h3 j24

human capital accumulation and the optimal level of unemployment insurance provision previous studies of optimal unemployment insurance ui design ignore the impact of ui on human capital investment decisions we show that fully experience rated ui increases investment in human capital when future employment opportunities are not known with certainty in the presence of wage taxation the optimal level of ui trades off full insurance and the impact through human capital of ui on the wage tax base this trade off in turn depends on the extent to which human capital accumulation reallocates labor between market and untaxed nonmarket activities taxation of ui benefits increases the optimal level of ui provision

the political economy of eastern european trade with the european community why so sensitive ec trade with eastern europe jim rollo and alasdair smith despite agreements to open trade with eastern europe the european community has retained a substantial degree of protection against imports of sensitive products notably agricultural products textiles and clothing and steel this article investigates how sensitive these products really are it is true that the targeted products are important to the ec economy particularly in the poorer or declining regions yet trade with eastern europe only amounts to a very small proportion of the size of these sectors when a large increase in imports is simulated the overall effects on the community are not insignificant but are well within the range of the normal experience of economic change even without taking into account the fact that eastern markets for ec goods would also grow trade liberalization is welfare increasing particularly far eastern europe thus contingent protection which may seriously deter investment in eastern europe may simply be protectionism in any sector in which eastern europe is successful

unemployment and income distribution time series evidence from sweden for a long time swedish politicians have been devoted to keeping unemployment at low levels the main reason for this devotion is probably the belief that higher unemployment increases inequality of income and welfare this is a reasonable belief since unemployment risks are highest among people with low earnings capacity even when they have a job by means of micro data it is easy to verify a marked low income profile of unemployment further the swedish unemployment insurance system replaces only about 70 per cent of foregone income and quite many unemployed do not qualify for any benefits see bjorklund and holmlund 1991 increases in unemployment however are associated with many changes in the economy with complex consequences for the personal distribution of income in addition to the income losses suffered by those who become unemployed higher unemployment also affects the factor shares of income the profit share typically declines during recessions and because upper income groups receive a relatively high proportion of their income from capital income a countervailing mechanism is involved changes in unemployment also affect inflation which in turn might influence the personal distribution of income the distributional effects of inflation are an open question this note makes an investigation into the relationship between unemployment and the personal distribution of income using swedish time series data the method was first used on u s data by blinder and

are regional trading arrangements trade creating an application of extreme bounds analysis in this study we use extreme bounds analysis to test the robustness of the hypothesis that regional trading arrangements rtas are trade creating extreme bounds analysis provides a more rigorous test of specification uncertainty than traditional econometric theory by incorporating prior information and using a systematic approach to testing the fragility of coefficient estimates the results show that the trade creation effect of most rtas is fragile using a least squares estimator where all weight is attached to the sampling distribution eight or more of the twelve rtas considered are found to be trade creating when the relative weight in the estimation is shifted from the sampling to the prior distribution the number of rtas that are trade creating falls to six at the 95 percent likelihood ellipsoid moreover when we specify that not all rtas are trade creating four rtas increase trade at the 95 percent likelihood ellipsoid at the extreme bounds when all weight is attached to the prior distribution none of the rtas are found to be trade creating as a result we conclude that the pervasive trade creation effect found in the literature reflects not the information content of the data but rather the unacknowledged beliefs of the researchers

revisiting the effects of regional trade agreements on trade flows with proper specification of the gravity model this paper uses a gravity model to assess ex post regional trade agreements the model includes 130 countries and is estimated with panel data over the period 1962 1996 the introduction of the correct number of dummy variables allows for identification of vinerian trade creation and trade diversion effects while the estimation method takes into account the unobservable characteristics of each pairs of trade partner countries the endogeneity of some of the explanatory variables as well as a potential selection bias in contrast to previous estimates results show that regional agreements have generated a significant increase in trade between members often at the expense of the rest of the world

trade creation and diversion revisited accounting for model uncertainty and natural trading partner effects summary the effect of preferential trade agreements ptas on trade flows is subject to model uncertainty stemming from the diverse and even contradictory effects suggested by the theoretical pta literature the existing empirical literature has produced remarkably disparate results and the wide variety of empirical approaches reflects the uncertainty about the correct set of explanatory variables that ought to be included in the analysis to account for the model uncertainty that surrounds the validity of the competing pta theories we introduce bayesian model averaging bma to the pta literature statistical theory shows that bma successfully incorporates model uncertainty in linear regression analysis by minimizing the mean squared error and by generating predictive distributions with optimal predictive performance once model uncertainty is addressed as part of the empirical strategy we find strong evidence of trade creation trade diversion and open bloc effects our results are robust to a range of alternative empirical specifications proposed by the recent pta literature copyright 2010 john wiley sons ltd

the effect of taxation on human capital this study finds a significant negative effect of proportional income taxation on human capital of the few earlier studies to address this issue most suggested a negligible effect of taxation on investment in human capital this earlier conclusion is shown to be incorrect by using a model that is more general in several respects than the models used previously

schooling and economic well being the role of nonmarket effects standard estimates of the economic value of additional schooling based on earnings differences associated with differences in the level of schooling attained cover only a portion of the total effects of education that are valued by citizens we first identify a catalog of nonmarketed effects many of which have been recently studied by economists and then propose a procedure for estimating a willingness to pay value for these effects using empirical estimates of the magnitude of a selection of these effects found in the literature we calculate willingness to pay values using our proposed procedure these illustrative calculations suggest that standard estimates of the benefit of incremental schooling substantially understate the full value of such investments

specific investments and the eu enlargement abstract this paper analyzes a hold up problem in the eu enlargement process eu specific anticipatory investments of private firms lower the government s outside option the eu takes advantage of the applicants increased dependency and extracts more surplus through entrance conditions that benefit it and impose net costs on applicants if private firms pay less than the full entrance fee in taxes enlargement immiserizes the entrant while in practice an applicant may possess sufficient bargaining power to avoid immiserization the hold up problem reduces its potential gains from joining the eu this result suggests that previous calculations ignoring both the applicants costs of joining the eu and the dynamics of their bargaining position during the negotiations overestimate the welfare effects of membership

human capital investment and labor supply under uncertainty we extend the theory of human capital investment under uncertainty by incorporating post investment labor supply as a choice variable we show that human capital investment decreases in response to an increase in risk about its return if such investment is an inferior activity and preferences exhibit decreasing risk aversion however if investment is normal then the effect of an increase in risk is indeterminate these results highlight the importance of obtaining empirical evidence on the income elasticity of demand for human capital investment for arriving at refutable hypotheses about the effect of risk

labor income taxation and human capital accumulation abstract this paper provides alternative analytical results concerning the effect of labor income taxation on human capital accumulation with the tax revenues being consumed by the government and savings being negatively related to the labor tax rate an increase in the labor income tax rate reduces the incentive for human capital accumulation and thus decreases human capital with tax revenues being consumed by government and savings being positively related to the labor tax rate an increase in the tax rate increases the incentive for human capital accumulation and increases human capital with the tax revenues being used to compensate the individuals who pay the taxes an increase in the tax rate has no effect on human capital

opening a can of worms the pitfalls of time series regression analyses of income inequality this paper argues that time series regression analysis is of only very limited use for understanding the determinants of income inequality the argument is based on a combination of results from the time series econometrics literature and several characteristics of inequality itself principally nonstationarity of the data in most inequality regression models and the weak theoretical foundations underlying the models a sample of postwar us data is used to illustrate the problems involved

managing the evolution of multilateralism author s downs george w rocke david barsoom peter n abstract in the past five years a relatively extensive literature has emerged that explores the demand for multilateral cooperation that is those factors that motivate states to develop or resist developing formal institutions that operate to increase interstate economic military or environmental cooperation 1 these factors include the transaction costs associated with ad hoc and multiple bilateral arrangements increased interstate trade the diffusion of liberal trade theory information about the costs of environmental degradation and trends in elite ideology to date however our understanding of the supply side of multilateralism the standards that are set for admission the order and speed with which candidate states are admitted and the impact of expansion on cooperation and future evolution has been relatively undeveloped 2 partly as a result theorists have had little to say about how multilateral institutions are likely to evolve or what the policy consequences of their expansion will be 3 supply side issues are important because multilateral organizations usually do not spring forth full blown they grow instead of forming an inclusive agreement that is one that covers nearly all of the states that its designers eventually hope to include many multilateral organizations start out with substantially smaller memberships and generally expand over time we argue that among the many possible explanations for the choice of this design strategy there is a rational choice argument

labor market integration investment in risky human capital and fiscal competition this paper presents a general equilibrium model where human capital investment increases specialization and exposes skilled workers to region specific earnings risk interjurisdictional mobility of skilled labor mitigates these risks state contingent migration of skilled labor also improves efficiency with perfect capital markets labor market integration raises welfare and reduces ex post earnings inequality if instead human capital investment can only be financed through local taxes labor market integration leads to interjurisdictional fiscal competition shifting the burden of taxation to low skilled immobile workers decentralized public provision of human capital investment creates earnings inequalities and is inefficient

does school quality matter returns to education and the characteristics of public schools in the united states this paper estimates the effects of school quality measured by the pupil teacher ratio average term length and relative teacher pay on the rate of return to education for men born between 1920 and 1949 using earnings data from the 1980 census we find that men who were educated in states with higher quality schools have a higher return to additional years of schooling rates of return are also higher for individuals from states with better educated teachers and with a higher fraction of female teachers holding constant school quality measures however we find no evidence that parental income or education affects average state level rates of return

in work benefits in the united states the earned income tax credit the earned income tax credit eitc is or soon will be the largest cash or nearcash benefit provided to low income households in the united states the eitc is a credit on the federal income tax available to working poor families with children in i994 the credit equals 26 3 of earned income wages salaries self employment income and farm income for taxpayers with one child up to an earned income of 7 750 hence the maximum benefit is 2 038 for families with one child because benefits increase with earned income up to a certain point the eitc seems to encourage work and therefore is a popular antipoverty programme taxpayers with one child and incomes above 7 750 but below i i ooo receive the maximum benefit taxpayers with one child whose incomes exceed i i ooo are in the phase out range of the credit their 2 038 credit is reduced by i5 98 cents for every dollar of income earned over and above i i ooo taxpayers with two or more children are entitled to a slightly larger credit 2 528 or 30o0 0 of 8 425 which is phased out at a i 7p68 0 rate a small credit of at most 306 was available to childless taxpayers betnween the ages of 25 and 64 for the first time in i 994 unlike most credits and deductions in the federal individual income tax system the eitc is refundable that is if the amount of the credit exceeds what the taxpayer owes he or she receives a payment from the us treasury for the difference the eitc was adopted in i975 and was originally promoted as a way to relieve the burden of the social security payroll tax on low wage working parents 2 the original eitc equaled io 0 of earnings up to a maximum credit of 400 for taxpayers with children and was phased out at a rate of io cents per dollar of earnings or adjusted gross income whichever was higher for incomes between 4 ooo and 8 ooo the eitc has been increased many times since i975 though the largest changes occurred in i990 and i993 in i996 when the i993 legislative changes are fully phased in the credit rate will be 40 0 of earnings for families with two or more children and 34 0 for families

structural unemployment cyclical unemployment and income inequality this is the first study that decomposes unemployment into its structural and cyclical components and investigates their impact on income distribution controlling for the influence of inflation increases in structural unemployment have a substantial aggravating impact on income inequality inflation has a progressive impact which is due to the unexpected component the study demonstrates that previous work failed to take into account the stochastic trend behavior of the variables consequently specifications used by previous research cannot predict the behavior of income shares after 1983 whereas the specification used by this paper generates accurate forecasts the results also indicate that a sustained gnp growth is not necessarily associated with an improvement in income inequality because sustained gnp growth can coexist with increased structural unemployment

monopolistic competition and international trade reconsidering the evidence we test some propositions about international trade flows that are derived from models of monopolistic competition developed by elhanan helpman and paul krugman we investigate whether the volume of trade between oecd countries is consistent with the predictions of a model in which all trade is intraindustry trade in differentiated products we then repeat the test with non oecd countries we also investigate whether the share of intraindustry trade is consistent with a more general theoretical model in which some but not all trade is intraindustry trade our results lead us to question the apparent empirical success of these models

low wage employment subsidies versus the welfare state this paper is a brief for the introduction of a subsidy to any qualified firm for its use of low wage employees as a means to reduce the unemployment and raise the pay of disadvantaged workers there would be a case for such a wage subsidy in all the advanced market economies and certainly the american one regardless of recent trends the case has grown stronger however with the worsening of the relative wages and especially the unemployment rates of low age workers the globalization of investment and the bias of technical progress are the causes most often suggested i would add the growth of the welfare system the public entitlements to hospitalization to retirement and disability insurance and to the benefits labeled welfare in the narrow sense since this factor tends to be overlooked i devote section i to it section ii proceeds to the case for a low wage employment subsidy it will be clear that the beneficial effects of the subsidy on disadvantaged workers are the mirror opposite of the harmful side effects of the welfare system side effects that the subsidy would counteract i side effects of the welfare system

bilateral trade flows the linder hypothesis and exchange risk bilateral trade flows are used to examine the linder hypothesis and the effect of exchange rate variability in a gra vity type trade model derived from an underlying demand and supply mo del a behavioral model is used to justify examining these issues joi ntly the model performs well empirically using a sample of seventeen countries for the period 1974 82 the authors find overwhelming supp ort for the linder hypothesis and this version of the gravity model moreover they find strong support for the hypothesis that increased exchange rate variability affects bilateral trade flows copyright 1987 by mit press

an empirical model of transfers within a federation with an application to the european union abstract we construct a stylized model of transfers within a federation and apply it to the european union our approach differs from that of most of the existing literature in that we fix the preferences for redistribution of resources among a federation s members rather than fix the current budgetary rules or modify them on the basis of assumed scenarios the model is tested successfully by assessing its ability to predict the effects of the last 1995 enlargement on the european budget we then use the estimated model to predict the reallocation of the union s net transfers after the upcoming eastern enlargement our estimates of transfers to the incoming member states exceed those of the rest of the literature our results can be interpreted in one of two ways first either the european union in its collective decision making process that in the future will include the five incoming countries as voting members will institute new rules and programs to further reduce the regional disparities in income or second if the current rules and programs are maintained then the eastern enlargement would result in a reduction in the depth of the union the approach we introduce can be more generally applied to the analysis of other intergovernmental or international organizations

optimal wage and income taxation with wage uncertainty optimal taxation in a two period model with human capital investment and second period wage uncertainty is analyzed a proportional tax on wages dominates lump sum taxation and the socially optimal level of human capital exceeds that which individuals choose a tax on interest income may raise welfare by encouraging investment in human capital the interest income tax reduces the difference between returns to physical and human capital from individuals inability to reduce human capital risk through diversification a positive interest income tax rate may therefore be optimal even with an optimal wage tax by encouraging m ore investment in human capital copyright 1987 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

measuring the effects of socio economic variables on the income distribution an application to the east german transition process this paper develops a discrete variant of the semiparametric methodology of dinardo fortin and lemieux 1996 dfl to measure the effects of socio economic variables on the income distribution although the proposed method is also based on the calculation of hypothetical income distributions by reweighting the original population it is much easier to implement the framework is applied to examine the distributional effects of rising unemployment decreasing female labor market participation and widening income structure in east germany following the reunification with west germany in 1990 the empirical results suggest that both these tendencies contributed considerably to the recent increase in income inequality in east germany

eu enlargement and the world trade system abstract the paper considers the possible enlargement of the eu towards the cee and the mediterranean and the implications for the rest of the world it suggests that with some variable geometry the eu could expand to more than 20 by the end of the century and to beyond 25 by 2010 it concludes that while trade diversion costs are likely to be low the main costs to the rest of the world will be associated with a more inward looking eu and the difficulties of decision making in particular

poverty in eastern europe in the years of crisis 1978 to 1987 poland hungary and yugoslavia eastern europe experienced an economic crisis between 1978 and 1987 declining income led to substantial increases in poverty rates in poland and yugoslavia while poverty in hungary remained at about the same level as before the crisis in all three countries urban poverty increased as the economic condition of state sector workers deteriorated to a much greater extent than that of agricultural and mixed households the increased poverty was entirely explained by declining income because the overall income distribution did not change or in some cases improved

changes in the distribution of wages in canada 1981 1992 this article uses microdata to study the changes in the distribution of weekly wages in canada from 1981 to 1992 changes in the distribution are analyzed using lorenz curves and eight different univariate measures of inequality evidence is presented that indicates that inequality is anticyclical increasing during recessions and falling during business cycle expansions moreover after changes in the cycle are accounted for there has been a clear upward trend in wage inequality comparisons between the canadian and the u s distributions show that wage inequality was less pronounced in canada than it was in the united states in the 1980s and was increasing in canada relative to the united states from 1989 to 1992