The Costs and Benefits of Inequality (HSC SSCE Economics): Revision Notes
The Costs and Benefits of Inequality
Income inequality presents both advantages and disadvantages for an economy and society. The general consensus among economists is that inequality tends to produce economic benefits but social costs.
The inequality debate
Economists hold different views on inequality:
Free market perspective: Some economists argue that inequality is a natural outcome of markets functioning efficiently. In their view, each person receives income based on their marginal productivity—the value they add through their work. Inequality creates incentives for people to work harder and improve their position in the income distribution.
Social justice perspective: Other economists emphasise the social harm caused by inequality. They argue that free-market capitalism creates social divisions (upper class, middle class, working class, and an "underclass"). Those in the underclass face barriers to education, employment, and social participation, which limit their ability to reach their full potential.
Economic benefits of inequality
Income inequality can increase productive capacity and raise real GDP per capita. These economic benefits arise mainly from incentive effects.
Encourages education and skill acquisition
When higher qualifications lead to higher incomes, workers are motivated to invest in their education and training. This improves the overall quality of the labour force.
Key condition: This benefit only works if low-income earners can actually afford to pay for education and training. Without access to affordable education, this incentive effect breaks down.
Encourages longer working hours and greater effort
The potential to earn higher incomes motivates workers to:
- Work longer hours or overtime
- Increase their productivity levels
However, workers will only sacrifice leisure time if they value the extra income more than their free time. Performance-related pay systems can encourage workers to be more productive.
Increases labour mobility
Higher wages in certain regions or industries act as a signal to workers, encouraging them to move to where their skills are most needed.
A more mobile labour force leads to:
- More efficient resource allocation
- Higher rates of economic growth
Encourages entrepreneurship and risk-taking
The prospect of substantial income rewards motivates entrepreneurs to:
- Undertake investment projects
- Accept business risks
- Create new businesses and jobs
Without these financial incentives, there would be fewer entrepreneurs, lower economic growth, fewer employment opportunities, and reduced productive capacity.
Creates potential for higher savings and capital formation
There is a strong relationship between income levels and saving rates:
- High-income earners save a larger proportion of their income
- Low-income earners save a smaller proportion
In theory, greater income inequality should lead to higher overall savings in the economy. These increased savings could reduce Australia's reliance on foreign capital by providing more domestic funds for investment.
Economic costs of inequality
Reduces overall utility
Inequality reduces total utility (satisfaction) in society. This is explained by the principle of diminishing marginal utility: as people consume more of something, each additional unit provides less satisfaction.
Practical application: An extra $1 of income provides more utility to a low-income earner than to a high-income earner. Therefore, redistributing income from high earners to low earners would increase total satisfaction in society.
Limitation: It is extremely difficult to measure and compare utilities accurately across different individuals.
Can reduce economic growth
High levels of inequality tend to slow economic growth for two main reasons:
- Consumption effect: Low-income earners spend a higher proportion of their income, which drives economic activity. Greater inequality means less overall spending.
- Human capital effect: Unequal societies undermine educational opportunities for children from poor backgrounds, resulting in a less productive and less skilled workforce.
Conversely, reducing inequality and distributing the benefits of growth more evenly can strengthen the economy's growth rate.
Reduces consumption and investment
Low-income earners spend a higher proportion of their income on essentials like housing and food. When inequality increases:
- Less income goes towards consumption overall
- This leads to lower economic activity
- Employment, investment, and living standards all decline
Creates conspicuous consumption
Conspicuous consumption is the purchase of expensive goods and services (such as designer clothing) purely to display wealth, rather than for practical utility.
Some economists argue that inequality creates a "leisure class" of high-income earners who engage in conspicuous consumption. This can foster a culture where people's self-worth depends on their position in the wealth hierarchy, rather than on more meaningful measures of success.
Creates poverty and social problems
Inequality causes relative poverty—a situation where people have significantly less income than the average in their society.
This contributes to:
- Development of an underclass with limited opportunities
- Reduced access to education
- Health disadvantages
- Lower labour force participation
- A self-perpetuating cycle of disadvantage
Over time, this reduces self-esteem and can result in people not working to their full capacity, or dropping out of the workforce entirely.
Increases welfare support costs
Governments must provide safety net income support for:
- Unemployed people
- The aged
- People with disabilities
Higher inequality means more people on low incomes requiring government assistance, placing greater demands on government revenue.
Social benefits of inequality
In theory, inequality could have social benefits if incomes accurately reflected individuals' productivity. In such a system:
- People would be fairly rewarded for their effort and enterprise
- This would motivate individuals to work harder, be more productive, and acquire new skills
The reality: inequality of opportunity
The economic system does not provide everyone with equal opportunities to acquire knowledge and skills. Therefore, income distribution does not accurately reflect productivity levels or work effort.
Factors creating inequality of opportunity in Australia:
Existing inequality perpetuates itself: Higher-income earners generally have access to better educational opportunities, making them more likely to gain admission to university courses and secure higher-paid occupations.
Differences in natural abilities: Not everyone has the same mental and physical attributes. For example, people talented at manual work often earn less than those with strong analytical skills, regardless of effort level.
Inherited wealth: People who inherit wealth have greater opportunities to build wealth through investments, compared to those who start with nothing.
Unequal access to networks: Social and business networks can lead to new opportunities. New migrants, for example, often struggle to access established networks. Informal barriers are particularly difficult to overcome—businesspeople may prefer working with people from similar backgrounds, informally excluding others.
Conclusion: Given these problems of inequality of opportunity, the social benefits of inequality are very limited.
Social costs of inequality
The three main social costs are social class divisions, poverty, and lower levels of wellbeing.
Research evidence: global concern about inequality
A 2014 Pew Global Attitudes Survey of more than 48,000 people across 44 countries found that inequality is one of the greatest concerns worldwide. In the United States, most European countries, Argentina, and South Korea, the gap between rich and poor was rated as the "greatest danger to the world"—ranking ahead of religious and ethnic hatred, nuclear weapons, pollution, and diseases.
Wellbeing
Research by The Equality Trust in the UK suggests that in advanced economies, many social problems are more closely related to inequality than to national income levels:
- Mental illness
- Crime rates
- Lower life expectancy
- Reduced social mobility
Key research: The Spirit Level (2009) by Richard Wilkinson and Kate Pickett analysed data from industrialised economies with different income distributions. Their conclusion: the best long-term strategy to reduce social problems (such as high crime and imprisonment rates, chronic health problems, and low trust within society) is not to focus on increasing economic growth, but to focus on reducing inequality.
Social class divisions
Income and wealth distribution creates class distinctions in modern economies:
- Upper class
- Middle class
- Working class
Large income differences can result in:
- Tensions between people and regions
- Industrial disputes over wage levels
- Social and economic instability
Poverty
Inequality results in higher levels of poverty. Many Australians live in relative poverty—having significantly less than the average standard of living.
Consequences of poverty:
- Traps families in a cycle of low incomes and limited opportunities
- Associated with increased crime, suicide, disease, and reduced life expectancy
The philosophical perspective: John Rawls' "veil of ignorance"
In his influential 1971 book A Theory of Justice, philosopher John Rawls proposed a thought experiment to determine fair levels of inequality. He suggested placing individuals under a "veil of ignorance"—asking them how they would want society structured if they didn't know their own position in the social hierarchy.
The question: If you were about to be born into a random family, what income distribution would you want in Australia? Would you:
- Accept a large gap between rich and poor, risking being born into a low-income family?
- Or prefer a smaller gap, accepting that a high-income family wouldn't be much better off than a low-income family?
This perspective helps identify which groups in society tend to support inequality as "necessary" and which groups advocate for lower levels of income inequality.
Remember!
- Inequality has economic benefits (mainly through incentive effects) but social costs (including poverty, class divisions, and reduced wellbeing)
- Economic benefits include encouraging education, work effort, labour mobility, entrepreneurship, and savings
- Economic costs include reduced utility, lower consumption and investment, and increased welfare costs
- Social benefits are limited because inequality of opportunity means incomes don't reflect true productivity
- Social costs include class divisions, poverty, and lower wellbeing—research shows reducing inequality may be more effective than increasing growth for solving social problems
- The principle of diminishing marginal utility explains why redistribution could increase total satisfaction in society
- Conspicuous consumption is spending to display wealth rather than for practical purposes