The relationship between income inequality and aggregate saving: an empirical analysis using cross-country panel data

If the rich save more than the poor, an increase in income inequality raises aggregate saving. We investigate whether income inequality is positively related to aggregate saving ratio by estimating a fixed-effect model based on a panel data of 48 countries for the period 1991–2010. We find evidence that aggregate saving ratio increases with income inequality using various inequality measures. In particular, the effect of income distribution on saving is greater and statistically more significant with in financially developed, rich and OECD countries. It suggests that the rich save much more than the poor under advanced financial system and in a rich country. We also find that the relationship between income inequality and saving ratio is closer in the 2000s than the 1990s. This finding may result from financial development and the high income level in the 2000s.     

Nonlinear taxation of income and education in the presence of income-misreporting

We study the joint design of nonlinear income and education taxes when the government pursues redistributive objectives. A key feature of our setup is that the ability type of an agent can affect both the costs and benefits of acquiring education. Market remuneration of agents depends on both their innate ability type and their educational choices. Our focus is on the properties of constrained efficient allocations when educational choices are publicly observable at the individual level, but earned income is subject to misreporting. We find that income-misreporting (IM) affects the optimal distortions on income and education and shed light on the reasons for it and mechanisms through which it is done. We show how and why IM strengthens the case for downward distorting the educational choices of low-ability agents. Finally, we find that IM provides another mechanism that makes commodity taxation useful.     

Procedural fairness and the tolerance for income inequality

This paper presents an experiment investigating what cultural and institutional factors underlying a society might render its members more or less tolerant of inequality in favor of greater efficiency. The specific institutional factors we address concern the fairness in the procedures or mechanisms through which individuals believe initial positions or roles in society are determined. Subjects' initial positions (rich vs. poor) are determined based on various criteria (random, meritocratic, arbitrary, and rewarding uncooperative behavior) and individuals' willingness to approve Pareto improvement when the improvement is mainly in favor of the already rich is measured. Our findings show that individuals' willingness to accept higher but more unequal outcomes depends on the source of the initial inequality and random assignment leads to the most tolerance for disadvantageous inequality, generating doubt about commonly held views concerning meritocracy. Moreover, holding the procedures constant, subjects reveal greater tolerance for inequality when self and the opponent share common group identity.     

Finance,income inequality and income redistribution

Using a panel fixed effects model for a large sample of countries covering 1975–2005, we test the hypothesis that income inequality caused by finance (financial development, financial liberalization and banking crises) is related to more income redistribution than inequality caused by other factors. Our results provide evidence in support of this hypothesis. We also find that the impact of inequality on redistribution is conditioned by ethno-linguistic fractionalization. Our findings are robust to the inclusion of several control variables suggested by previous studies.     

Inequality aversion and voting on redistribution

Some people have a concern for a fair distribution of incomes while others do not. Does such a concern matter for majority voting on redistribution? Fairness preferences are relevant for redistribution outcomes only if fair-minded voters are pivotal. Pivotality, in turn, depends on the structure of income classes. We experimentally study voting on redistribution between two income classes and show that the effect of inequality aversion is asymmetric. Inequality aversion is more likely to matter if the “rich” are in majority. With a “poor” majority, we find that redistribution outcomes look as if all voters were exclusively motivated by self-interest.     

An Economic Analysis of Public Transfers

This paper develops simple models of public transfers. The sources of income inequality are differences in ability and in luck. The government employs a redistribution policy that arises from altruistic motives in the case of ability differences. I consider the case where the government re-optimizes income transfers after it observes the outcome of private activities. When the source of income inequality is differences in luck, the economy creates a mutual insurance or provides public goods out of risk-sharing motives. I derive the paradoxical result that a more able individual would not enjoy higher welfare than a less able individual. I also investigate how public transfers react to increases in income level and income inequality.
JEL Classification Numbers: F21, F35.     

Trade,growth and income redistribution: A case study of India

The concern of this exercise is with the effectiveness of trade policies and their assessment in achieving economic growth and income equality. A link between growth and equality is provided through employment. If there is substantial increase in employment, the inequality of income distribution is likely to be reduced. Thus, trade by bringing about higher levels of production and employment may reduce income inequality. We have applied a closed input-output model to the Indian data to estimate the interrelationships between trade, growth and income redistribution. It has been found that employment opportunities could be raised substantially through redistribution as well as through export promotion in developing countries such as India, if capital and foreign exchange constraints are not binding. Import substitution, however, does not turn out to be as effective a strategy to achieve these goals.     

Global corporations and local politics: income redistribution vs. FDI subsidies

Income inequality has been used empirically to explain the mixed performance of developing countries in attracting FDI. This paper sets up a theoretical model that links the skewness of the income distribution to a host government's willingness to subsidize FDI. Large skewness makes government subsidies less likely because the median income person prefers redistribution. Little skewness, however, does not guarantee FDI. In addition, host governments may switch from positive to no subsidies if a shift in economic variables changes how the policymaker trades off the FDI benefits and income redistribution, thereby offering an alternative to the conventional hold-up story.     

Income distribution, borrowing constraints and redistributive policies

This paper sheds light on the relationship between income inequality and redistributive policies and provides possible guidance in the specification of empirical tests of such a relationship. We model a two-period economy where capital markets are imperfect and agents vote over the level of taxation to finance redistributive policies that enhance future productivity. In this context, we show that the pivotal voter is not necessarily the agent (class) with median income. In particular, the poor, who are more likely to be liquidity constrained, may form a coalition with the rich and vote for low redistribution. The effects of an increase in income inequality on the level of redistribution turn out to depend on whether the increase in inequality is concentrated among the poor or the middle class. Empirical results from a panel of 22 OECD countries provide preliminary evidence consistent with our main theoretical implications.     

Poverty among ethnic minorities: the transition process,inequality and economic growth

This article investigates the process of reducing poverty in ethnic minority households. Using two recent Vietnam household surveys, we find that ethnic minority households are more likely to be persistently poor and less likely to be persistently non-poor than ethnic majority households. The within-group component generated by the variation in income within each ethnicity group explains more than 90% of the change in total inequality. Income redistribution plays an important role in decreasing the poverty gap and decreasing poverty severity. Different ethnic groups have different poverty patterns, which should be noted when designing policies to alleviate poverty and inequality.     

Mobility and Redistributive Politics

There is widespread concern that greater mobility of individuals can undermine any attempt to redistribute income at the local level. In this paper we derive the equilibrium level of redistribution when both the rich and the poor are imperfectly mobile and when each jurisdiction chooses its redistributive policy by majority voting. This leads to a fundamental interaction whereby the policy choices of jurisdictions determine whom they attract and where whom they attract determines their policy choices. Our main findings are twofold. First, we show that greater mobility of the poor can increase the equilibrium amount of redistribution. Second, we find that some jurisdictions can be in equilibrium on the "wrong" side of their Laffer curve. The reason is that the poor are in a majority in these jurisdictions and they are opposed to a potentially Pareto-improving tax reduction because it would attract the rich and shift the majority. The analysis also reveals how the interplay between policy choices and membership leads to multiple equilibria.     

Inequality and happiness: are Europeans and Americans different?

We study the effect of the level of inequality in society on individual well-being using a total of 123,668 answers to a survey question about “happiness”. We find that individuals have a lower tendency to report themselves happy when inequality is high, even after controlling for individual income, a large set of personal characteristics, and year and country (or, in the case of the US, state) dummies. The effect, however, is more precisely defined statistically in Europe than in the US. In addition, we find striking differences across groups. In Europe, the poor and those on the left of the political spectrum are unhappy about inequality; whereas in the US the happiness of the poor and of those on the left is uncorrelated with inequality. Interestingly, in the US, the rich are bothered by inequality. Comparing across continents, we find that left-wingers in Europe are more hurt by inequality than left-wingers in the US. And the poor in Europe are more concerned with inequality than the poor in America, an effect that is large in terms of size but is only significant at the 10% level. We argue that these findings are consistent with the perception (not necessarily the reality) that Americans have been living in a mobile society, where individual effort can move people up and down the income ladder, while Europeans believe that they live in less mobile societies.     

富爸爸、穷爸爸和子代收入差距

本文使用基于工具变量分位数回归的分解方法,通过构建低收入家庭子女与高收入家庭子女拥有相同的特征分布情况下的反事实收入分布,对高、低收入家庭子女的收入差距进行分解。结果显示,高、低收入家庭的子女之间的收入差距主要来源于教育水平、工作经验、工作单位性质等特征差异;两组子女间的回报差异存在,但主要影响低分位点处子女之间的收入差距,对高分位点处的收入差距影响有限。高分位点处子女之间的收入差距几乎能够完全被特征差异所解释。     

Does greater income inequality cause increased work hours? New evidence from high income economies

We explore the extent to which individual's allocation of time between labour and leisure is affected by the consumption standards of the rich. Utilizing a panel data methodology and panel Granger causality tests we investigate the relationship between income inequality and work hours for a cluster of 24 high-income OECD countries over the period 1990–2015. Four alternative measures of income inequality are considered. We find that greater income inequality is associated with longer work hours indicating stronger concern for conspicuous consumption rather than conspicuous leisure. Even though the resulting estimates lend support to the theoretical framework on consumption emulation, the generated evidence also appears to be in line with a Duesenberry's and Frank's expenditure cascading approach. The ambiguity however arising from the Granger Causality tests appears to lead – to a certain extent – to different conclusions about the direction of causality or whether a causal relationship does even exist. It is therefore imperative that caution should be exercised when interpreting the direction of the causal dimension.     

Income, income inequality, and health: Evidence from China

This paper tests using survey data from China whether individual health is associated with income and community-level income inequality. Although poor health and high inequality are key features of many developing countries, most of the earlier literature has drawn on data from developed countries in studying the association between the two. We find that self-reported health status increases with per capita income, but at a decreasing rate. Controlling for per capita income, we find an inverted-U association between self-reported health status and income inequality, which suggests that high inequality in a community poses threats to health. We also find that high inequality increases the probability of health-compromising behavior such as smoking and alcohol consumption. Most of our findings are robust to different measures of health status and income inequality. Journal of Comparative Economics 34 (4) (2006) 668–693.     

The brain drain and the world distribution of income

Skilled emigration (or brain drain) from developing to developed countries is becoming the dominant pattern of international migration today. Such migration is likely to affect the world distribution of income both directly, through the mobility of people, and indirectly, as the prospect of migration affects the rate of return to education in both the sending and receiving economies. This migration pattern will therefore affect human capital accumulation and fertility decisions in both the sending and receiving economies. This paper analyzes these effects in a dynamic two country model of the world economy where agents in both countries make optimal fertility and human capital decisions. The implications of the analysis for the world distribution of income are derived in the light of recent empirical findings of the brain drain literature. The analysis shows that the current trend towards predominantly skilled emigration from poor to rich countries may in the long run increase inequality in the world distribution of income as relatively poor countries grow large in terms of population. In the short run however, it is possible for world inequality to fall due to rises in GDP per capita in large developing economies with sufficiently low skilled emigration rates.     

Decomposing World Income Distribution: Does The World Have A Middle Class?

Using the national income/expenditure distribution data from 111 countries, we decompose total inequality between the individuals in the world, by continents and regions. We use Yitzhaki's Gini decomposition which allows for an exact breakdown of the Gini. We find that Asia is the most heterogeneous continent; between-country inequality is much more important than inequality in incomes within countries. At the other extreme is Latin America where differences between the countries are small, but inequalities within the countries are large. Western Europe/North America is fairly homogeneous both in terms of countries' mean incomes and income differences between individuals. If we divide the world population into three groups: the rich (those with incomes greater than Italy's mean income), the poor (those with incomes less than Western countries' poverty line), and the middle class, we find that there are only 11 percent of people who are "world middle class"; 78 percent are poor, and 11 percent are rich.     

Determinants of governmental redistribution: Income distribution,development levels,and the role of perceptions

We empirically investigate the relationship between income inequality and redistribution, accounting for the shape of the income distribution, different development levels, and subjective perceptions. Cross-national inequality datasets that have become available only recently allow for the assessment of the link for various sample compositions and several model specifications. Our results confirm the Meltzer-Richard hypothesis, but suggest that the relation between market inequality and redistribution is even stronger when using perceived inequality measures. The findings emphasize a decisive role of the middle class, though also approving a negative impact of top incomes. The Meltzer-Richard effect is less pronounced in developing economies with less sophisticated political rights, illustrating that it is the political channel through which higher inequality translates into more redistribution.     

Does grassroots democracy reduce income inequality in China?

Using village and household survey data collected from 48 villages of eight Chinese provinces for the period 1986–2002, this paper studies how the introduction of village elections affects income distribution at the village level. We estimate both a static fixed-effect panel model and a dynamic panel model for the within-village Gini coefficient and take care of the endogeneity of the introduction of elections. The dynamic panel model shows that having elections reduces the Gini coefficient by 0.04, or 14.3% of the sample average. We also find that elections tend to increase the income shares of poorer portions of the population. Further econometric analysis based on dynamic panel models shows that elections increase per-capita public expenditures by 271 Yuan, but do not increase the level or progressiveness of net or total income transfer in a village. Therefore, elections' positive role in reducing income inequality is not played through more income redistribution, but through more pro-poor public investment.     

Accounting for non-market activities in the distribution of income: An empirical investigation

It is frequently alleged that inequality is overstated when the non-market sector is ignored. This paper tests this proposition empirically, using detailed survey data from Malaysia. Indeed, we find that when the definition of income is broadened to include the value of non-market activities, income levels rise, especially among the poor, and inequality falls. In these data, it is the average number of hours of work considered to produce ‘income’, and not their distribution, that affects income inequality. This underscores the need for great caution in interpreting intercounty or intertemporal comparisons of inequality.