Wages and Wage Inequality in South Africa 1994–2011: Part 2 – Inequality Measurement and Trends

We analyse the long‐term trends in wage inequality in South Africa, using household survey data. We show that the trends in household income inequality are largely driven by changes in wage inequality. Given the detailed nature of our series we show that measurement issues and breaks in the series need to be dealt with in order to draw robust conclusions from the data. Most standard inequality measures show that wage inequality has increased over the period. Nevertheless the choice of measure matters, because there are different trends in different parts of the distribution. It appears that the distribution below the median has become more compressed, while the top of the wage distribution has moved away from the median. The inequality in the labour market translates into even higher inequality in society given that high earners tend to live together with other high earners while low wage individuals often end up sharing their incomes with the unemployed. Furthermore there are many South Africans with access to no wage income. Given the trends analysed here it is not surprising that overall inequality in South Africa has not come down or has even increased since the end of apartheid.     

Wages and Wage Inequality in South Africa 1994–2011: Part 1 – Wage Measurement and Trends

We analyse the long‐term trends in wage inequality in South Africa, using household survey data. We show that the trends in household income inequality are largely driven by changes in wage inequality. Given the detailed nature of our series we show that measurement issues and breaks in the series need to be dealt with in order to draw robust conclusions from the data. Most standard inequality measures show that wage inequality has increased over the period. Nevertheless the choice of measure matters, because there are different trends in different parts of the distribution. It appears that the distribution below the median has become more compressed, while the top of the wage distribution has moved away from the median. The inequality in the labour market translates into even higher inequality in society given that high earners tend to live together with other high earners while low wage individuals often end up sharing their incomes with the unemployed. Furthermore there are many South Africans with access to no wage income. Given the trends analysed here it is not surprising that overall inequality in South Africa has not come down or has even increased since the end of apartheid.     

Incentives versus equality: What does China's recent experience show?

Since 1978, China's economic policies have stressed differential rewards for higher productivity, particularly through the contract system in rural areas. This has permitted and encouraged some families to achieve relatively high incomes. However, there was considerable inequality in China before 1978, particularly the persistent and wide disparity between urban and rural incomes. The economic reform has had some tendency to increase slightly the share of income received by the very top group and to reduce slightly the share of the bottom one-third. However, the principal effects have been to raise total income for most residents and to reduce substantially the urban-rural gap.     

Inequality in China revisited. The effect of functional distribution of income on urban top incomes,the urban-rural gap and the Gini index, 1978–2015

Most analyses explain the increase in China's overall inequality during the reform period principally by means of the expansion of urban-rural income gap. This paper tries to state a relationship between functional distribution of income and China's Gini index. After presenting the main theoretical contributions that clarify the general relationship among those variables, we describe the mechanism that has connected them during the last decades in the Chinese economy. There exists a link between falling wage share, rising urban households' top incomes, urban-rural income gap and the Gini coefficient. These relationships are analysed for both the pre and post-crisis periods. After estimating the main relationships, the paper ends with a discussion on the ability of potential redistributive policies to reverse this pattern of inequality.     

Inequality of opportunity and income inequality in nine Chinese provinces, 1989–2006

While there is a large and growing body of research describing and analyzing changes in the Chinese income distribution, researchers have paid considerable less attention to inequality of opportunity. The aim of this paper is to contribute to filling this gap in the literature. The two main questions addressed empirically for the first time in a Chinese context are: to what extent are individuals’ incomes and individual income differences due to factors beyond the individual's control (in Roemer's terminology “circumstances”) and to what extent are they due to outcomes of the individual's own choices (“effort”). What is the relationship between income inequality and inequality of opportunity?For this purpose we use data from the China Health and Nutrition Survey collected from nine provinces during the period 1989 to 2006. The CHNS has detailed information about incomes and other factors enabling us to construct a host of circumstance and effort variables for the offspring.We find that China has a substantial degree of inequality of opportunity. Parental income and parents' type of employer explain about two thirds of the total inequality of opportunity. Notably, parental education plays only a minor role implying that parental connections remain important. The results show that the increase in income inequality during the period under study largely mirrors the increase in inequality of opportunity. Thus, increased income inequality does not reflect changes in effort variables, or expressed differently, increased income inequality has not been accompanied by a decrease in inequality of opportunity.     

Introduction to income inequalities and redistribution in china

This special section presents the main findings about long-run trends in inequality in China and its driving factors as they emerge from a country case study carried out under a UNU-WIDER supported project.¹ Special focus in the umbrella project were on three issues: (i) the role of earnings inequality and its determinants; (ii) the role of top incomes when administrative records or other sources can be combined with household surveys; and (iii) the redistributive impact of public policies. Main findings of the project including those for China results were presented in a special panel during the UNU-WIDER Think Development – Think WIDER development conference held in Helsinki in September 2018.²

1. Motivation

Inequality has once again emerged as a major issue in economic development across the developed and developing world, and addressing this challenge is key in the UN Sustainable Development Agenda. The UNU-WIDER conference on Mapping the Future of Development Economics held in Helsinki in September 2016³ led to the formulation of a project to study inequality in five major developing countries accounting for more than 40 per cent of the world’s population. UNU-WIDER implemented these studies under its Inequality in the Giants project,⁴ designed as part of a broader international effort to shed light on a set of new questions on between-country and within-country inequalities, by generating integrated datasets and applying a consistent methodology to investigate the determinants of inequality dynamics in some of the world’s largest economies. China was included among the five case countries, and the effort included both a series of papers on China, produced under the coordination of Professor Shi Li and various workshops and meetings. Coming to grips with inequality in China is an obvious priority for anyone interested in trends in global inequality; and the present special section contains five key papers produced in the context of the UNU-WIDER project and subsequently accepted for publication by the China Economic Review.

2. Content of the special section

The five papers on inequality in China presented in this special section cover different topics and jointly illustrate a key set of important themes in the recent evolution of China’s income distribution.The opening study by Luo, Li, and Sicular (LLS) provides an overview and analysis of the long-term evolution of inequality in China, while the next three papers — on urban wage inequality, public transfers, and top incomes — each illustrates and delves more deeply into important aspects of the broader trends in inequality.What are the main findings of these papers? The core finding is that inequality in China rose markedly from the 1980s through the early 2000s; only since 2008 has the upward trend stopped or reversed. LLS report and examine the underpinnings of this core finding, using the five waves of the China Household Income Project surveys conducted during 1988-2013. This paper also finds a considerable, ongoing reduction in rural poverty, and a poverty decomposition analysis indicates that this poverty reduction was mostly due to income growth rather than redistribution in rural areas.The second paper by Gustafsson and Wan (GW) is on urban wage inequality from 1988 to 2013 and it sheds further light on the changes in the distribution of wage earnings. The authors highlight that average wages have grown rapidly and that wage inequality increased until 2007. Moreover, age has become weaker and education stronger related with wage. Importantly, the gender wage gap once small widened rapidly between 1995 and 2007, and workers in foreign owned firm and the state sector enjoy a wage premium.While wages are the most important component of income, it is only part of the inequality story. One important additional question is the role of government taxes and transfers. Since the early 2000s, China has embarked on a major effort to put in place a universal social safety net. The study by Cai and Yue (CY), which is the third paper, assess the consequences of these efforts. Their key conclusions include that the same public policy may produce different redistributive implications. Moreover, if the government keeps increasing the social security transfer scale without changing its distribution, then inequality will increase in China. In addition, formal-sector pension takes up the biggest share and is the most un-equalizing sub-item of all social security transfers; and related to the first paper in the special section they argue that the government should spend more on Dibao and rural residents pension to reduce inequality.Arguably, income inequality measured using household survey data understates actual inequality because surveys have difficulty in capturing top incomes. In the Chinese case, concerns about such bias have increased in the past ten years due to the expansion of private wealth and growing numbers of super-rich. The fourth paper by Li, Li, and Wan (LLW) is on top incomes in China and it attempts to correct for this bias using income information for the Chinese super-rich from various sources. They conclude that the Gini coefficient of income inequality increases substantially when samples of top incomes are incorporated.Finally, Gradín and Wu (GW) analyse in the fifth and final study the distribution of income and expenditure in China in a telling comparative perspective with India. Both countries represent two extreme cases in the relationship of inequality using both wellbeing indicators. It emerges that the joint distribution of income and expenditure differs between China and India because there is a higher prevalence of people with a large mismatch between their ranks in income and consumption in India, especially in rural areas, and particularly amongst those reporting low income and high expenditure. The main compositional effects identified are the different demographic and geographical composition of the countries’ populations, mostly the smaller households (especially in rural areas) and the higher level of urbanization in China than in India. The lack of consistency of cross-country comparisons based on income or expenditure calls for the use of hybrid inequality measures combining data on both provided they are available in the same survey.

3. Concluding remarks

The studies brought together in this special section provide telling insights about the trends in inequality in China from which scholars and policy makers can learn a great deal. In a global perspective, further increases in China’s mean income and wealth, both now above the global means, will begin to raise global between-country inequality. This is important in and of itself. Moreover, while we cannot expect that all the world’s poorest countries will follow the same path as China considering that the initial conditions and the international context they face will be very different, the experiences from China do reinforce the observation that much can be done by policy to influence inequality outcomes. In particular, and as argued by Gradin, Leibbrandt, & Tarp, 2020 (forthcoming):“well-functioning labour markets that promote job-creation, decent pay and social inclusion, removing any legal or de facto discrimination based on gender, race, ethnicity or place of origin, providing equal access to human and physical capital, and empowering the most disadvantaged population groups, are a key driver of increased equality”.These insights also emerge clearly from the five China studies in this special section.     

Decomposing income inequality in a backward pre‐industrial economy: Old Castile (Spain) in the middle of the eighteenth century

Research on economic inequality in early modern Europe is complicated by the lack of appropriate data for reconstructing income or wealth distributions. This article presents a study of income inequality in mid‐eighteenth‐century Old Castile (Spain) using the Ensenada Cadastre, a census conducted between 1749 and 1759. The article describes the information provided by this census and then discusses its advantages and disadvantages for reconstructing income profiles and calculating income inequality. This is followed by analysis of a dataset derived from the Cadastre that consists of more than 4,000 observations from Palencia (a province in northern Spain) and contains information on sources of household income, each household head's main occupation, residence location, and other household characteristics. Demographic data from this census is used to weight observations in the sample and thereby minimize selection bias. Findings show that inequality in eighteenth‐century Spain was probably substantial despite its relative backwardness; that the relationship between inequality and per capita income was not clear‐cut and was probably influenced by measurement of the higher incomes; and that although income inequality was largely driven by uneven land distribution, labour income also contributed to overall inequality—especially in urban centres.     

Exclusive Growth? Rapidly Increasing Top Incomes Amid Low National Growth in South Africa

Despite South Africa’s need for inclusive economic growth, we find that the top income percentiles continue to diverge from the rest of the income distribution. We compare household survey data and tax data (which, unlike household survey data, includes accurate data for the very rich) to investigate the patterns of income growth over the period 2003 to 2018. We find that the gap between the stagnant middle and the top end of the income distribution widened, particularly over the post-recession period. We also show that the divergence was partly driven by high returns to capital for those with top incomes.     

我国居民收入分配的格局——帕雷托分布方法

本文为确定一个时期内总体收入分配或特定部分的收入分配究竟是否趋向两极分化和比较中间收入等级和高收入等级的分配份额提供了方法。用帕雷托分布拟合我国1988年和1995年两年的居民收入分配。发现1995年和1988年相比：（1）没有明显证据表明农村居民收入存在两极分化．城镇居民在排除了收入最低的10％人口后，有明显的两极分化趋向；（2）中间等级收入份额减少。收入向高收入者集中；（3）高收入者内部收入分配差别扩大；（4）社会成员在不同的收入等级之间的流动更加容易。     

Intersectoral Transfer,Growth, and Inequality in Rural Ecuador

In this paper we study intersectoral transfer and its impact on the distribution of income in Ecuador. We find that income shares between farm and nonfarm activities are roughly equal, on average, although the rich in rural areas typically receive a greater share of income from nonfarm sources. Thus decomposing inequality by income source reveals that a rise in nonfarm incomes increases inequality. Drawing on a new method to estimate local-level distributional outcomes, growth of the high-productivity nonfarm sector is observed to have a strong and positive association with average consumption and inequality. Growth of the low-productivity nonfarm sector is associated with little change in either average income or income inequality. Irrespective of subsector, growth of the nonfarm sector is associated with a substantial fall in poverty.     

Income distribution in the mirror of height differences: The case of Spain 1895–1950

Changes in the differences of heights among social groups could indicate shifts in income inequality. However, they can result from other factors as well. This article discusses which factors are these and, hence, which variables should we control for before taking height differences as a proxy for income inequality. An application to Spain from late nineteenth to mid-twentieth century seems to sustain the authors' contentions, and provide some conclusions for this country and time period. Given the scarcity of data on family incomes, this method could prove valuable for the study of the long-run evolution of income distribution in other countries.     

Relative income position,individual and social income satisfaction,and income inequality

Summary The survival probability as estimated by an individual is,ceteris paribus supposed to depend on his relative income position in a set of reference incomes. The relative income position is thus defined in close connection to the preference formation theory of Kapteyn. It is shown that then this survival probability, called ‘utility,’ may be equated to the relative income position. A nice result of this approach is the possibility to formulate a utilitarian welfare function, which leads to the definition of income inequality measures. It is shown that the use of sets of reference incomes may lead to considerably smaller measured inequality.     

The impact of agricultural technology adoption on income inequality in rural China: Evidence from southern Yunnan Province

This study analyzes the impact on income inequality of government efforts to increase agricultural incomes in rural China. It collects and analyzes survey data from 473 households in Yunnan, China in 2004. In particular, it investigates the effects of government efforts to promote improved upland rice technologies. Our analysis shows that farmers who adopted these technologies had incomes approximately 15% higher than non-adopters. Despite this relatively large increase, we estimate that the impact on income inequality was relatively slight. This is primarily due to the fact that lower-income farmers adopted the improved rice technology at rates that were roughly equivalent to those of higher-income farmers.     

China＇s New Rural Income Support Policy： Impacts on Grain Production and Rural Income Inequality

I. Introduction Since the beginning of 2004, the Chinese Government has replaced its centuries-old policy of taxing agriculture by a new policy aimed at subsidizing agriculture and stimulating rural incomes. To this end, agricultural taxes – standing at around 8 percent of agricultural incomes – were drastically reduced. By now they are abolished in most provinces. Inaddition, farmers growing grain receive a direct income subsidy, new seed varieties and mechanization are subsidized, and la…     

The long-term evolution of national income inequality and rural poverty in China

Using the five waves of the China Household Income Project surveys conducted during 1988–2013, we investigate long-term changes in national income inequality and rural poverty in China. National income inequality rose markedly to 2007 and thereafter fell slightly. Income growth was widely shared, but inequality increased because the high-income percentiles had faster income growth than lower percentiles and because the gap between urban and rural household incomes widened. The fall in income inequality after 2007 reflects faster income growth among low-income percentiles and the impacts of newly introduced redistributive policies. The paper also finds a considerable, ongoing poverty reduction in rural China. A poverty decomposition analysis indicates that this rural poverty reduction was mostly due to income growth rather than redistribution.     

Describing and decomposing post-apartheid income inequality in South Africa

This paper describes the changes in inequality in South Africa over the post-apartheid period, using income data from 1993 and 2008. Having shown that the data are comparable over time, it then profiles aggregate changes in income inequality, showing that inequality has increased over the post-apartheid period because an increased share of income has gone to the top decile. Social grants have become much more important as sources of income in the lower deciles. However, income source decomposition shows that the labour market has been and remains the main driver of aggregate inequality. Inequality within each racial group has increased and both standard and new methodologies show that the contribution of between-race inequality has decreased. Both aggregate and within-group inequality are responding to rising unemployment and rising earnings inequality. Those who have neither access to social grants nor the education levels necessary to integrate successfully into a harsh labour market are especially vulnerable.     

Estimating flexible consumption functions for urban and rural households in China

There are few comprehensive studies of household consumption in China that covers all commodities due to data restrictions. This prevents the calculation of inequality indices based on consumption. This lack of coverage also makes analysis of policies that affect consumption difficult; economy-wide models used for analysis often have to employ simple consumption forms with unit income elasticities. We estimate a translog demand system distinguished by demographic characteristics, giving price and income elasticities that should be useful for policy analysis. We estimate separate functions for urban and rural households using household expenditure data and detailed commodity prices (1995–2006). This allows future analysis of social welfare and inequality based on consumption to supplement existing studies based on income. To illustrate an application of the model, we project consumption composition based on projected prices, incomes and demographic changes – aging, education improvement and urbanization.     

Regional income inequality and poverty level in Russia: An analysis adjusted for the purchasing power of the ruble

This paper presents the findings of a study of income inequality and poverty level in Russian regions with regard to the purchasing power of the rouble in regions. The possibility of income equalization by means of distribution opportunity of leveling-off incomes at the expense of their redistribution is appraised.     

Australian squatters,convicts, and capitalists: dividing up a fast‐growing frontier pie, 1821–71

Compared with its competitors, Australian GDP per worker grew exceptionally quickly from the 1820s to the 1870s, at a rate about twice that of the US and three times that of Britain. Did this rapid growth produce rising inequality, following a Kuznets curve? Using a novel dataset, this article offers new evidence that provides unambiguous support for the view that, in sharp contrast with the US experience and with globalization‐inequality views concerning late nineteenth‐century frontiers, Australia underwent a revolutionary levelling in incomes up to the 1870s. This assessment is based on trends in many proxies for inequality, as well as annual estimates of functional income shares in the form of land rents, convict payments, free unskilled labour incomes, free skilled labour and white collar incomes, British imperial transfers, and a capitalist residual.     

When More Poor Means Less Poverty: On Income Inequality and Purchasing Power

We show theoretically that the poor can benefit from price changes induced by higher income inequality. As the number of poor increases, the market for products aimed toward the poor grows, and such products become more profitable. As a result, there are circumstances where an increase in income inequality associates with higher purchasing power of the poor. Using cross‐country data on the price of one kilogram of rice and the price of a Big Mac hamburger, we confirm a negative association between income inequality and the price of inferior goods, robust to the inclusion of a large set of control variables. Results are also robust to a first difference specification and to a two‐stage instrumental variables approach. Examining economic well‐being, it is thus important to analyze not only the incomes of households, but also the prices of the products and services that they buy.