Explaining changes in post-apartheid income and earnings inequality
type: CreativeWork
description: This doctoral thesis analyses the changes in income inequality in post-apartheid South Africa. The thesis adds to the existing literature by explaining the underlying causes of the changes in observed income inequality. As such, this thesis applies different decomposition methods to the Gini coefficient. In the analysis of household income sources, traditional static decompositions are supplemented by applying micro-simulations that allow for a dynamic decomposition of changes in income sources reported in household surveys. The results corroborate previous findings of the significant contribution of labour market incomes and governmen grants. However, the application of advanced dynamic methods highlights the effects of changes in other factors, such as investment income and the role of employed household members, which have previously received less attention. Further study of household survey data and a unique set of tax administration data enabled a decomposition of the Gini coefficient of taxable income to investigate the effect of high earners on income inequality and the accuracy of capturing them in household surveys. This analysis highlights a significant weighting issues of high earners in the latest wave of the household survey data. Therefore, when combining the two types of data sets, a significant decrease in overall inequality of taxable income can be found between 2011 and 2014. The results ascertain the vast differences between the top and the bottom of the income distribution and concrete policies addressing both sides of the issue need to be implemented in order to overcome persisting income inequality. Finally, the strong effects of labour market incomes on overall income inequality warrant further investigation. Therefore, changes in earnings inequality are decomposed to assess the effect of changes in the labour market. The application of micro-simulations thereby allows to decompose the changes in earnings inequality into ‘price effect' and ‘en…
abstract: This doctoral thesis analyses the changes in income inequality in post-apartheid South Africa. The thesis adds to the existing literature by explaining the underlying causes of the changes in observed income inequality. As such, this thesis applies different decomposition methods to the Gini coefficient. In the analysis of household income sources, traditional static decompositions are supplemented by applying micro-simulations that allow for a dynamic decomposition of changes in income sources reported in household surveys. The results corroborate previous findings of the significant contribution of labour market incomes and governmen grants. However, the application of advanced dynamic methods highlights the effects of changes in other factors, such as investment income and the role of employed household members, which have previously received less attention. Further study of household survey data and a unique set of tax administration data enabled a decomposition of the Gini coefficient of taxable income to investigate the effect of high earners on income inequality and the accuracy of capturing them in household surveys. This analysis highlights a significant weighting issues of high earners in the latest wave of the household survey data. Therefore, when combining the two types of data sets, a significant decrease in overall inequality of taxable income can be found between 2011 and 2014. The results ascertain the vast differences between the top and the bottom of the income distribution and concrete policies addressing both sides of the issue need to be implemented in order to overcome persisting income inequality. Finally, the strong effects of labour market incomes on overall income inequality warrant further investigation. Therefore, changes in earnings inequality are decomposed to assess the effect of changes in the labour market. The application of micro-simulations thereby allows to decompose the changes in earnings inequality into ‘price effect' and ‘en…
author: Hundenborn, Ines Janina
keywords: Income Distribution, Inequality, South Africa, Personal Income Tax, Labour Market, Micro-Simulations
date published: 2021
date modified: 2026-07-24T01:34:16Z
provider: University of Cape Town
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: School of Economics

PropertyValue
property ID: Handle
value: http://hdl.handle.net/11427/33818