Analyzing Income Distribution in Australia*

This paper contains an analysis of the sources of income inequality in Australia, based on data from the ABS income survey for 1978‐79. The analysis proceeds by progressive decomposition of the population into component groups differentiated by characteristics such as sex, age, employment status and occupation. At each stage of the decomposition, total inequality is partitioned into contributions from within and between the component groups, as measured by the Shorrocks Iq index. The importance of the characteristic in question as a source of inequality can then be assessed. While the results of the analysis are described in some detail, the emphasis of the paper is primarily methodological.