This document discusses rising income inequality in OECD countries. It finds that inequality increased in both high- and low-inequality nations from 1975 to 2010, during recessions and booms, and despite rising employment. Developments in labor earnings and markets were primary drivers, with very high incomes increasing and lower-skilled workers falling behind due to factors like non-standard work and technology benefiting high-skilled workers more. While redistribution through taxes and benefits reduced inequality, these systems became less effective at doing so in many nations. The document recommends policies to support low-income households, review tax provisions, promote skills training, and facilitate employment opportunities for underrepresented groups.

1. Divided We Stand:
Why inequality keeps rising
December 14, 2011 OECD, Directorate for Employment, Labour and Social Affairs

2. Huge country differences in levels of
income inequality
Income gap between poorest
and richest 10%
Source: OECD 2011, Divided we Stand. Note: Incomes are net incomes of the working-age population.
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3. Income inequality is at a record high in
the OECD area
0.42
Trends in income inequality (Gini coefficient)
0.38
0.34
0.30
0.26
0.22
1975 1980 1985 1990 1995 2000 2005 2010
Source: OECD 2011, Divided we Stand. Note: Incomes are net incomes of the working-age population.
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4. Some surprising facts
• Income inequality increased in both high- and
low-inequality countries alike;
• Income inequality increased during both
recession and boom periods;
• Income inequality increased despite
employment growth.
So what happened?
• Developments in labour earnings and labour
markets are the main driver.
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5. At the upper end, the share of very high
incomes increased
Source: OECD 2011, Divided we Stand
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6. At the lower end, lower-skilled people
tended to fall behind
• Changes in working conditions: part-time work
and non-standard labour contracts increased;
• Changes in technology: technical progress was
more beneficial for high-skilled workers;
• Changes in working hours: many countries saw an
increasing divide in hours worked between high-
and low-wage workers.
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7. Accounting for part-timers and self-
employed increases earnings inequality
Earnings inequality among full-timers, part-timers and all
workers, OECD average
Source: OECD 2011, Divided we Stand
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8. What were the main drivers of
rising inequality?
• Globalization had little impact on wage inequality trends per se but
put pressure on policies and institutional reforms;
• Trends in globalization and policies affect wages but also
employment and unemployment.
• A number of regulatory reforms aimed at promoting growth and
productivity…
…also had a positive impact on employment…
…but at the same time have been associated with increased wage inequality;
• Skill-based technical progress is a source of rising wage inequality
• Upskilling was the most important counterweight, reducing
inequality and increasing employment
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9. Redistribution through taxes and benefits
plays an important role in moderating market
income inequality
Market incomes are distributed more unequally than household net
incomes: taxes and benefits reduce inequality by a quarter
Source: OECD 2011, Divided we Stand. Note: Data refer to the working-age population.
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10. .. but redistribution became weaker in
many countries
How much of the increase in market income inequality was offset
by income taxes and cash transfers?
10/13 Source: OECD 2011, Income Distribution Database

11. Why have tax/benefit systems become
less successful at reducing inequality?
• While overall redistribution has increased, this was not
enough to offset growing market-income inequality;
• Changes in overall redistribution were mainly driven by
benefits: those became more redistributive during the
1990s but less effective since then;
• Spending levels have been a more important driver of
these changes than tighter targeting;
• Spending shifted towards “inactive” benefits, leading
to reduced activity rates and higher market-income
inequality.
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12. Policy lessons for OECD countries
• Government transfers (cash and in-kind) have an important
role to play to safeguard low-income households;
• Scope for reviewing some existing tax provisions in light of
increased “tax capacity" among top-income households;
• “More and better jobs”: Increasing employment may
contribute to sustainable cuts in income inequality, provided
employment gains occur in jobs that offer career prospects;
• Facilitate and encourage access to employment for under-
represented groups: address labour market segmentation;
• Promote up-skilling of the workforce: better training and
education for the low-skilled;
 Both redistribution and inclusive employment policies matter.
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13. More Information…
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www.oecd.org/els/social/inequality