the learning path of the hidden economy the tax burden and tax evasion in new zealand this paper considers the learning curve relationship between the aggregate tax rate and the relative size of the hidden economy in new zealand some simple non linear models are estimated so that the effects of changes in the effective tax rate on the underground economy can be simulated this study finds that about half of the hidden activity in new zealand is a learned response to changing opportunities and constraints in fiscal policy but this amount varies over the business cycle simulating a zero tax rate permits us to discover the natural rate of underground and criminal activity some partial lessons are drawn for taxation policy in that country

can falling supply explain the rising return to college for younger men a cohort based analysis although the college high school wage gap for younger u s men has doubled over the past 30 years the gap for older men has remained nearly constant in the united kingdom and canada the college high school wage gap also increased for younger relative to older men using a model with imperfect substitution between similarly educated workers in different age groups we argue that these shifts reflect changes in the relative supply of highly educated workers across age groups the driving force behind these changes is the slowdown in the rate of growth of educational attainment that began with cohorts born in the early 1950s in all three countries

measuring the hidden economy implications for econometric modelling in this paper i support using econometric techniques to measure the size of the hidden underground economy because such information is important for the construction of certain economic models and for empirical policy analysis generally detailed information on the output of the hidden economy is unavailable even where careful measures of the underground economy have been constructed usually these data are available only periodically important exceptions are the classic results of tanzi 1983 for the united states and bhattacharyya s 1990 series for the united kingdom in the case of the new zealand economy a time series of data on the hidden economy has been generated recently giles 1997a this provides the unusual opportunity to undertake econometric modelling in a way which takes account of such activity formally moreover we can examine the policy implications arising from the linkages between hidden output and various measured economic aggregates this abstract was borrowed from another version of this item

the hidden economy as an unobserved variable abstract the technique of unobserved variables is used to estimate the relative size and development time of the hidden economy of oecd countries the burdens of taxation and regulations and the tax morality turn out to be statistically significant determinants at the end of the scandinavian and benc lux countries are expected to have a relatively large and japan and switzerland a relatively small hidden economy canada and the united states are rank in the middle the size of all hidden sectors is estimated to have increased in the period 1960 1973 relative to officially measured gnp

pass through of exchange rates and tariffs in brazil u s tobacco trade this paper examines the extent to which exchange rate and tariff changes are passed through in u s import prices of unmanufactured tobacco from brazil the model used considers the possibility of market imperfections in international trade and the potential effects of strategic trade policies the results indicate that agricultural prices may not be as flexible as commonly thought furthermore exchange rate and tariff changes are not fully passed through to u s tobacco import prices which indicates that firms selling brazilian tobacco may use trade strategies to maintain or even increase their trade shares in the u s tobacco market

symmetric pass through of tariffs and exchange rates under imperfect competition an empirical test abstract this paper examines the effect of tariffs and exchange rates on u s prices of japanese cars trucks and motorcycles in particular we test whether the long run pass through of tariffs and exchange rates are identical the symmetry hypothesis we find that this hypothesis is easily accepted in our sample we also find that the pass through relation varies across products ranging from about 0 6 for trucks to unity for motorcycles these coefficients have very different implications for trade policy we explain the results based on demand cost and institutional conditions in each industry

cross country variation in the impact of international migration canada mexico and the united states using data drawn from the canadian mexican and u s censuses we find a numerically comparable and statistically significant inverse relation between immigrant induced shifts in labor supply and wages in each of the three countries a 10 labor supply shift is associated with a 3 4 opposite signed change in wages despite the similarity in the wage response theimpactofmigrationonthewagestructuredifferssignificantlyacrosscountries international migration narrowed wage inequality in canada increased it in the united states and reduced the relative wage of workers at the bottom of the skill distribution in mexico jel j31 j61

the canadian underground and measured economies granger causality results using new time series data for the size of the canadian underground economy the relationship between unreported and measured gdp in that country is examined granger causality tests are conducted with a proper allowance for the non stationarity of the data it is found that there is clear evidence of such causality from measured gdp to hidden output but only very mild evidence of granger causality in the reverse direction this result supports similar evidence for new zealand reported by the first author and has several interesting policy implications

prices rise faster than they fall output prices tend to respond faster to input increases than to decreases this tendency is found in more than two of every three markets examined it is found as frequently in producer goods markets as in consumer goods markets in both kinds of markets the asymmetric response to cost shocks is substantial and durable on average the immediate response to a positive cost shock is at least twice the response to a negative shock and that difference is sustained for at least five to eight months unlike past studies which documented similar asymmetries in selected markets gasoline agricultural products etc this one uses large samples of diverse products 77 consumer and 165 producer goods accordingly the results suggest a gap in an essential part of economic theory as a start on filling this gap the study finds no asymmetry in the resonse of an individual decision maker a supermarket chain to its costs but it finds above average asymmetry where a cost shock is filtered through a fragmented w

non equivalent pass through of anti dumping duties countervailing duties and import tariffs we directly compare the short run pass through of tariffs anti dumping ad duties and countervailing cv duties into us import prices consistent with the theoretical predictions we find clear pattern of non equivalence in import price reaction to the three duty types with the most notable difference detected between ad duties and tariffs according to our estimates a tariff rate would have to be approximately two times higher than an ad duty rate in order to have the same effect on the delivered import price

shadow economy and unemployment rate in u s a is there a structural relationship an empirical analysis this article aims to estimate the size of the us shadow economy se using a structural equation approach and to evaluate if a structural relationship exists between the se and the unemployment rate ur in the united states the size of the se is estimated to be decreasing over the last two decades we corroborate the existence of a structural relationship between the se and the ur by using a simple theoretical model furthermore we extend the okun s law to estimate the structural relationship between growth rate of official gdp se and ur our results indicate a significant positive relationship between the se and the ur

does taking the shadow economy into account matter when measuring aggregate efficiency we analyze how adding the shadow economy to official output figures affects estimated technical efficiency at the country level we find that this only slightly affects the ranking of efficiency scores but increases average efficiency in a sample of 87 to 97 countries both developed and developing our results are robust to the functional form of the production technology and the adjustment of labour to account for years of schooling

native migrant labour substitution by industry and wage effects evidence from the uk unlike previous studies we estimate the native migrant substitution elasticity nme differentiated by sector to do so we employ a straightforward estimation strategy that consists of adding slo

is price adjustment asymmetric evaluating the market share and marketing bottlenecks hypothesis abstract export price adjustment is asymmetric with respect to currency fluctuations in at least two circumstances if firms face capacity constraints in distribution networks or quantitative trade restrictions then pricing to market may be greater during depreciations of the exporter s currency if firms attempt to build market share subject to the threat of trade restrictions then pricing to market may be greater during appreciations of the exporter s currency this paper tests for asymmetries using panel data on german and japanese 7 digit industry exports the data seldom reject the hypothesis of a symmetric response of prices to exchange rates

pass through of exchange rates and tariffs in greek us tobacco trade abstract the paper examines the extent to which exchange rate and unit tariff changes are passed through in us import prices of unmanufactured greek oriental tobacco the results indicate partial pass through of exchange rates and tariffs exchange rate pass through is about 0 272 and tariff pass through about 0 185 one possible reason for the partial pass through is oligopoly in tobacco exporting oligopoly would imply that depreciation of the drachma relative to the us dollar benefits tobacco exporters operating in greece a second possible reason is a possible correlation between exchange rates premiums paid to tobacco exporters in previous agricultural policies an important implication of this possible correlation is that greek tobacco prices may be more sensitive to exchange rate changes under the current agricultural policy

the impact of immigration on the structure of wages theory and evidence from britain immigration to the uk particularly among more educated workers has risen appreciably over the past 30 years and as such has raised labor supply however studies of the impact of immigration have failed to find any significant effect on the wages of native born workers in the uk this is potentially puzzling since there is evidence that changes in the supply of educated natives have had significant effects on their wages using a pooled time series of british cross sectional micro data on male wages and employment from the mid 1970s to the mid 2000s this paper offers one possible resolution to this puzzle namely that in the uk natives and foreign born workers are imperfect substitutes we show that immigration has primarily reduced the wages of immigrants and in particular of university educated immigrants with little discernable effect on the wages of the native born

the first review of european union antidumping reviews the literature on antidumping ad has documented various aspects of this protectionist tool however a peculiar feature of ad has not received much attention these measures are endogenous to the behaviour of the exporting firms which can adjust the dumping margin by changing their export price and ask the authority to amend the ad measures accordingly the objective of this paper is to fill part of this gap in the literature by analysing the ad reviews conducted by the european union for affirmative petitions initiated in 1980 2009 to this end a novel data set of all such reviews has been assembled summary statistics reveal that more than a third of all petitions concluded with the imposition of ad measures are reviewed at least once before their expiration and most reviews lead to lower ad duties although almost 20 per cent of the firms investigated through interim reviews see their duties increase there are significant differences in the outcome of the reviews depending on the party requesting them i e reviews lodged by european producers are less likely to lead to lower duties these conclusions are confirmed by the econometric analysis which also shows that chinese firms see their duties reduced significantly less than those of firms from other countries

eu anti dumping and tariff cuts trade policy substitution the world trading system in its current form aims at reducing multilateral trade barriers across the board indeed the last successfully concluded multilateral trade negotiations led to substantial tariff concessions on the part of most developed economies what however happened to other forms of import protection have substantial tariff concessions subsequently been replaced by the use of alternative forms of import protection in this paper we empirically investigate the relationship between negotiated external tariff cuts and the subsequent use of anti dumping actions by the eu evidence is found for larger uruguay round tariff cuts increasing the probability of subsequent anti dumping investigations

shadow economies size causes and consequences using various methods the size of the shadow economy in 76 developing transition and oecd countries is estimated average size varies from 12 percent of gdp for oecd countries to 23 percent for transition countries and 39 percent for developing countries increasing taxation and social security contributions combined with rising state regulations are driving forces for the increase of the shadow economy especially in oecd countries according to some findings corruption has a positive impact on the size of the shadow economy and a growing shadow economy has a negative effect on official gdp growth

tariff pass through and the distributional effects of trade liberalization abstract this paper estimates the distribution of welfare gains due to the trade reforms in india by simultaneously considering the effect on prices of tradable goods and wages the cost of consumption for each household is affected by the domestic price changes while wage incomes adjust to these price changes in equilibrium three rounds of the indian employment and consumption surveys are used for the analysis the price transmission mechanisms are estimated for both rural and urban areas to understand the extent to which the trade reforms are able to affect the domestic prices in order to assess the distributional effects a series of nonparametric local linear regressions are estimated the findings show that households at all per capita expenditure levels had experienced gains as a result of the trade liberalization while the average effect was generally pro poor and varied significantly across the per capita expenditure spectrum

nontariff barriers and trade liberalization i introduction it is common to recognize that tariffs have gradually been replaced by nontariff barriers ntbs some authors go even further and argue there is a law of constant protection an expression used by bhagwati 1988 mainly to dismiss the idea baldwin 1984 600 for instance writes not only have these measures become more visible as tariffs have declined significantly through successive multilateral trade negotiations but they have been used more extensively by governments to attain the protectionist goals formerly achieved with tariffs the purpose of this article is to set up a model in which the effect of trade liberalization on the use of quotas and antidumping laws can be investigated directly we analyze two types of bilateral trade liberalization tariff reductions and quota elimination we show that our model is consistent with a progression from the use of tariffs only to the use of quotas following tariff liberalization to the use of antidumping laws when quotas have been jointly tarrified second it is also consistent with a narrowing of the range of industries in which each of these instruments is used third the extent of bilateral tariff liberalization and the ensuing degree of replacement of tariffs by ntbs depend on the combination of two industry specific characteristics the government s preferences for domestic firm profits and the importance of international transport cost in the industry overall our results suggest that treaties that remove or reduce one type of distortion may lead to the use of other policies tha t are even worse but despite the use of ntbs overall trade is more liberal to show these results we use a standard two country model with two way trade where the policy maker s objective function is quasi concave this last characteristic is important to explain some of the results as it leads to strategic complementarity in the tariff game and to the possibility of interior solutions in the quota game our results appear to track three separate sets of empirical facts well first evidence shows that there is a clear emergence of quantitative restrictions in the 1960s in manufacturing sectors and in developed economies followed by an explosion in the use of antidumping constraints since the 1980s 1 the emergence of these two ntbs can be linked to preceding multilateral trade rounds and in particular to the completion of the kennedy round today the general agreement on tariffs and trade gatt 1990 10 notes that despite a recent decline in the number of anti dumping investigations initiated in the united states and the european communities anti dumping remains after tariffs the most frequently invoked trade policies in these countries antidumping measures are also spreading to developing countries nogues 1993 quantitative restrictions are meanwhile on the decline as signatories of the uruguay round agreement are now required to tariffy existing quotas and constrain their future use gatt 1990 documents specific import quotas import licensing restrictions and items subject to import prohibition that have been eliminated in recent years second the gradual replacement of trade tools has also been accompanied by a reduction of the number of sectors affected by ntbs whereas very few products were traded without levy before the various gait rounds renner 1971 finds that 7 of the four digit product classes were affected by quantitative restrictions in the united states and in the european communities in 1970 the number of antidumping cases in the european communities initiated and or ending up with a positive decision represents a fraction of this number see gait 1993b mainly concentrated on a very small number of sectors see messerlin and reed 1995 of course it is not because a smaller number of sectors are affected by ntbs that overall protection necessarily decreases however given the high rates of growth in world trade it seems likely that despite this substitution the overall level of protection has decreased over time

market consumption and hidden consumption a test for substitutability in this paper an empirical analysis is performed on the relationship between private consumption and underground economy for the italian case it is found that private market consumption and underground or hidden consumption may be defined as complementary goods an increase in underground consumption tends to increase family market consumption and increase its marginal utility an implication of this result is that the nonmarket sector does not offer hedging opportunities to the consumer worker as stressed by busato and chiarini s 2004 artificial economy moreover wealth effects associated with a change in underground consumption are negative a statistical model confirms this structural interpretation

antidumping investigations and the pass through of antidumping duties and exchange rates comment well in excess of 100 percent based on their understanding of the us antidumping calculation however the hypothesis is based on an incorrect understanding of the antidumping calculation under us law when corrected for this error the hypothesis would lead to a prediction of simple 100 percent pass through at most dumping refers to selling a product in an export market at less than its normal value a benchmark that is most commonly based on sales in the domestic market of the same product antidumping laws set tariffs to offset the amount of dumping the excess of normal value over export price in us practice a dumping complaint is brought on behalf of an industry against rival imports with the cases defined by product and by country a successful case results in the potential imposition of antidumping duties over and above any normal tariffs an unsuccessful case results in no duties being imposed american antidumping law and practice have the somewhat unusual characteristic that anti dumping duties are estimated and used to set duty deposits for a forward looking period in an initial investigation then are recalculated and actually assessed for the same period now back ward looking in a later review with some variation the later review is typically completed about two years after the initial investigation the review sets a new deposit rate and a second review determines the actual assessment rate retrospectively this can be repeated indefinitely the ini tial duty estimate resulting in a deposit rate allows companies to modify their pricing behavior so as to affect the actual dumping duties that are later assessed blonigen and haynes exploit this characteristic of the us administration of its antidump ing law to examine the effects of the imposition of antidumping duties on the pass through to us pricing the dumping investigation and resulting deposit rate provide information that the company can use in its subsequent sales in order to reduce or eliminate its dumping liability in the eventual review by comparing the antidumping deposit rates with eventual us pricing the degree of pass through of antidumping deposits can be estimated and the effects on exchange rate pass through of a potential antidumping dumping duty can be studied here i focus on the factual underpinnings that lead to blonigen and haynes s pricing model rather than the empirical results that model predicts that the method by which the us department of commerce usdoc calculates ad duties will lead to pass through of estimated antidump ing duties at twice the level of those estimated duties if companies wish to eliminate the eventual dumping duties by studying the outcomes of a series of ad cases concerning steel from canada they conclude that pass through of estimated duties exceeds 160 percent broadly consistent with

welfare costs of the u s antidumping and countervailing duty laws abstract the antidumping ad and countervailing duty cvd laws in the united states have become the most pervasive form of import relief sought by domestic producers this paper estimates the collective economic effect of the hundreds of active u s ad cvd orders using a computable general equilibrium model we estimate that the collective net economic welfare cost in 1993 of these orders to be 4 billion this welfare estimate is sensitive to various modeling assumptions which are explored in the paper with the implementation of the uruguay round agreements the ad cvd laws remain one of the costliest programs restraining u s trade

cointegration and unit roots this paper provides an updated survey of a burgeoning literature on testing estimation and model specification in the presence of integrated variables integrated variables are a specific class of non stationary variables which seem to characterise faithfully the properties of many macroeconomic time series the analysis of cointegration develops out of the existence of unit roots and offers a generic route to test the validity of the equilibrium predictions of economic theories special emphasis is put on the empirical researcher s point of view

the degree and determinants of exchange rate pass through market structure non tariff barriers and multinational corporations this study investigates the exchange rate pass through for australian imports of manufactures pass through elasticities are estimated for total manufactures and forty product categories by applying an econometric procedure which avoids the pitfalls in previous studies to a carefully assembled data set the determinants of pass through are analyzed by relating the pass through elasticities to variables representing foreign control nontariff barriers product characteristics and market structure the author finds that pass through is incomplete for most products with significant variation across products unlike previous studies he finds that most of the variation in pass through is explained by the presence of multinational corporations and nontariff barriers copyright 1996 by royal economic society

size and scope of the underground economy in germany the objective of this paper is to improve estimations of the size and scope of the underground economy by introducing a new approach that combines the advantages of the two most commonly used approaches i e currency demand and multiple indicators multiple causes mimic the new approach is applied to germany among other things it is shown that the approach yields improved estimation results some policy perspectives are discussed in the concluding section

retailers and consumers the pass through of import price changes in this paper we estimate pass through rates of import price changes to retail prices across retailers and consumers for apparel purchases in germany for the period of 2000 07 we find that high price retailers do not pass through changes in the import price pass through rates for low price retailers are 53 per cent within three months consequently pass through rates for low income households are 58 per cent significantly larger than those for high income households we then present one possible explanation for these observations in a theoretical model with endogenous vertical product differentiation due to bundling an ex ante homogeneous import goods with services following an import price change retailers who sell a cheaper unbundled product change prices to a greater extent than retailers who sell a higher priced bundle of product and service

migration and imperfect labor markets theory and cross country evidence from denmark germany and the uk we investigate the labor market effects of immigration in denmark germany and the uk three countries which are characterized by considerable differences in labor market institutions and welfare states institutions such as collective bargaining minimum wages employment protection and unemployment benefits affect the way in which wages respond to labor supply shocks and hence the labor market effects of immigration we employ a wage setting approach which assumes that wages decline with the unemployment rate albeit imperfectly we find that the wage and employment effects of immigration depend on wage flexibility and the composition of the labor supply shock in germany immigration involves only moderate wage but large unemployment effects since immigrants are concentrated in labor market segments with low wage flexibility the reverse is true for the uk and denmark

keeping it off the books an empirical investigation of firms that engage in tax evasion this article uses a unique dataset that contains detailed information on firms from around the world to investigate factors that affect under reporting behaviour the empirical strategy employed exploits the nature of the dependent variable which is interval coded and uses interval regression which provides an asymptotically efficient estimator provided that the classical linear model assumptions hold these assumptions are investigated using standard diagnostic tests that have been modified for the interval regression model evidence is presented that shows that the firms in all regions engage in under reporting regression results indicate that government corruption has the single largest causal effect on under reporting resulting in the percentage of sales not reported to the tax authority being 51 3 higher taxes have the second single largest causal effect on under reporting resulting in the percentage of sales not reported to the tax authority being 18 0 higher followed by access to financing

exchange rate pass through abstract the resilience of trade balances of the major industrialized economies to changes in their exchange rates has evoked interest in the exchange rate pass through relationship so far there has not been a comprehensive survey of this literature the paper aims to fill this gap in two ways first it pieces together the theoretical literature on exchange rate pass through second it provides a critical survey of the empirical literature on exchange rate pass through emphasis is placed on the data and methodology employed in previous work this is done in order to guide future work in this growing area of research

price adjustment and exchange rate pass through abstract this paper develops a simple theoretical model that can be used to account for the determinants of exchange rate pass through to consumer prices while recent evidence has found low estimates of pass through in many countries there is little consensus on an explanation for this our paper argues that sticky prices represent a key determinant of exchange rate pass through we make this argument in two stages first holding the frequency of price change constant we show that our model calibrated to data from low inflation countries can reproduce the estimates of very low pass through for these countries the principal determinant of low pass through in this case is the slow adjustment of prices we then extend the model to allow the frequency of price change to be endogenous calibrating to a wider set of countries including both low inflation and high inflation countries we show that our model implies that exchange rate pass through is increasing in average inflation but at a declining rate performing the identical exercise on the data we find a striking correspondence between the predictions of the model and those of the data

immigrant native wage gaps in time series complementarities or composition effects previous research has shown that immigrants wages decrease when the supply of immigrants increases this negative correlation has been interpreted as evidence of immigrant native complementarities in production the present study finds that it is instead due to changing immigrant composition

anti dumping a growing problem in international trade this paper discusses the issue of anti dumping ad proliferation ad is used more frequently by more countries and against more products than ever in its history i review ad filing patterns with an emphasis on the scope of countries and industries seeking protection recent trends suggest that the widespread embrace of ad protection makes the prospect for ad reform increasingly unlikely ad is no longer being used solely by high income developed countries it is increasingly being used by middle income and even lower income countries new users have chosen to use ad very intensively per dollar of imports the new users have filed ad cases up to 15 20 times more frequently than the traditional ad users such as the us and eu the evolving set of ad users complicates ad negotiations in the near term strong opposition by the us and eu makes reform a highly unlikely outcome in the longer run rising use of ad against the us and eu could conceivably weaken their support for ad yet the same trends that might finally cause the us and eu to realise ad is a failed policy will likely make reform impossible

negotiated trade restrictions with private political pressure we consider a home government with political pressure to restrict trade the foreign country is compensated with a portion of the tariff revenues or quota rents but cannot directly observe the political pressure abroad in this setting the two countries negotiate over the volume of trade and transfer of rents depending on the level of political pressure we determine globally optimal incentive compatible trade policies in which the home government has no incentive to overstate or understate the pressure for protection

the price effect of tariff liberalization measuring the impact on household welfare abstract trade policy literature has for many years emphasized open policies positive impact on economic growth and development while these results generally hold when measured on averages empirical evidence suggests that trade liberalization is unlikely to produce beneficial results across all households this study adds to the literature by providing an analysis of the distributive effects of tariff liberalization in mexico the paper examines the effect of tariff liberalization from the perspective of households both as consumers and factor owners allowing for imperfect domestic price transmission the results indicate the overall positive effect of tariff liberalization masks significant differences in the distribution of gains both across income levels and across geographic regions richer households are found to have gained relatively more urban areas as well as mexican states closest to the united states border are also found to be larger beneficiaries while southernmost states have been largely bypassed by the effects of tariff liberalization those results can be explained not only in relation to the different endowments of the households but also by the diverse effects on local prices that has resulted from mexican trade liberalization

the rise of us anti dumping activity in historical perspective empirical studies of anti dumping activity focus almost exclusively on the period since 1980 this paper puts recent us anti dumping experience in historical context by studying the determinants of annual case filings over the past half century the conventional view that few anti dumping cases existed prior to 1980 is not correct although most did not result in the imposition of duties the increased number of cases in recent decades largely reflects petitions that target multiple source countries the number of imported products involved has actually fallen since the mid 1980s the annual number of anti dumping cases is influenced by the unemployment rate the exchange rate import penetration closely related to the decline in average tariffs and changes in the anti dumping law and its enforcement in the early 1980s

frequency of price adjustment and pass through we empirically document using u s import prices that on average goods with a high frequency of price adjustment have a long run pass through that is at least twice as high as that of low frequency adjusters we show theoretically that this relationship should follow because variable mark ups that reduce long run pass through also reduces the curvature of the proflt function when expressed as a function of the cost shocks making the flrm less willing to adjust its price lastly we quantitatively evaluate a dynamic menu cost model and show that the variable mark up channel can generate signiflcant variation in frequency equivalent to 37 of the observed variation in the data on the other hand the standard workhorse model with constant elasticity of demand and calvo or state dependent pricing has di culty matching the facts

immigration and inequality immigration is often viewed as a proximate cause of the rising wage gap between highand low skilled workers nevertheless there is controversy over the appropriate theoretical and empirical framework for measuring the presumed effect and over the precise magnitudes involved this paper offers an overview and synthesis of existing knowledge on the relationship between immigration and inequality focusing on evidence from cross city comparisons in the u s while some researchers have claimed that a cross city research design is inherently flawed i argue that the evidence from cross city comparisons is remarkably consistent with recent findings based on aggregate time series data in particular cross city and aggregate time series comparisons provide support for three key conclusions 1 workers with below high school education are perfect substitutes for those with a high school education 2 high school equivalent and college equivalent workers are imperfect substitutes with an elasticity of substitution on the order of 2 3 within education groups immigrants and natives are imperfect substitutes together these results imply that the average impacts of recent immigrant inflows on the relative wages of u s natives are small the effects on overall wage inequality including natives and immigrants are larger reflecting the concentration of immigrants in the tails of the skill distribution and higher residual inequality among immigrants than natives even so immigration accounts for a small share 5 of the increase in u s wage inequality between 1980 and 2000