Australia has experienced a steady growth in economy during past twenty years. As a consequence of the rapid growth in economy, both labour and capital earnings rose and benefited to all households (Greenville, Pobke, & Rogers, 2013). Furthermore, among OECD countries, Australia achieved the second highest position in average income increase from the mid-1990s to the late 2000s (Fletcher & Guttmann, 2013; Greenville et al., 2013). Although the economy is shown a stable growth, income inequality is flouring across Australian states due to fundamental changes like privatisation, internationalisation of financial sector and so on (Johnson, Manning, & Hellwig, 1998).