Absolute Poverty
Defines absolute poverty as a state in which individuals cannot access the basic necessities needed for survival -- food, clean water, shelter, and clothing -- and explains how it is measured against a fixed international income threshold such as the World Bank's $2.15/day line. The key insight is that absolute poverty is measured against a fixed, universal standard rather than in comparison to others in society, making it useful for comparing living standards across countries and tracking global progress over time. Contains: text explanation, a worked example applying the poverty line to a household, and a common-mistake callout distinguishing absolute from relative poverty.
Absolute poverty is a condition in which an individual or household lacks the minimum income or resources required to meet basic physiological needs -- adequate food, clean water, shelter, clothing, and sanitation. Because it is defined by an inability to survive rather than by comparison with others, absolute poverty exists independently of how wealthy or unequal a society is: it can, in principle, be eliminated entirely if incomes rise enough for everyone to clear the threshold.
To measure absolute poverty consistently across countries and over time, economists use a poverty line: a fixed income threshold below which a person is considered unable to afford basic necessities. The most widely used international benchmark is the World Bank's international poverty line, set at $2.15 per day (in purchasing power parity terms, meaning it accounts for differences in the cost of living between countries). Anyone living on less than this amount is classified as being in extreme (absolute) poverty. Because the line is fixed in real terms, a country can reduce its absolute poverty rate through economic growth alone, without any change in how income is distributed.
Applying the poverty line
- A household in a low-income country earns the equivalent of $1.80 (PPP) per person per day.
- The World Bank's international poverty line is $2.15 (PPP) per person per day.
- Since 2.15, this household falls below the threshold and is classified as living in absolute poverty.
- If national income growth raised this household's daily income to $2.30, it would cross the line and no longer be classified as being in absolute poverty -- even though it may still be very poor relative to the rest of its society.
Common mistake: students often confuse absolute poverty with relative poverty. Absolute poverty is measured against a fixed threshold tied to survival needs (e.g. $2.15/day), so it can theoretically be eradicated by sufficient economic growth. Relative poverty is measured against a moving benchmark tied to the living standards of a specific society (e.g. below 50% of median income), so it persists as long as income inequality exists, even in very wealthy countries.
Absolute poverty focuses on whether basic physical survival needs -- food, shelter, clothing, clean water -- are met, using a fixed monetary threshold like the World Bank's $2.15/day line. This makes it a useful tool for measuring global progress in reducing extreme deprivation over time, since the standard does not shift as societies get richer.
- Absolute poverty = inability to afford basic necessities (food, shelter, clothing, water)
- Measured against a fixed income threshold, e.g. the World Bank's $2.15/day (PPP) international poverty line
- Unlike relative poverty, absolute poverty can theoretically be eliminated through sufficient economic growth
- The threshold does not change as a society's average income rises, unlike relative poverty measures
- Useful for cross-country comparisons since it is not tied to any one society's living standards
Relative Poverty
Defines relative poverty as a measure of inequality relative to a society's own living standards, most commonly identified as households earning below 50% of median income, and distinguishes it from absolute poverty's fixed survival threshold. The key insight is that relative poverty can persist or even rise even as absolute living standards improve, because it tracks a society's income distribution rather than a fixed basket of necessities. Contains: text explanation, a comparison table of relative versus absolute poverty, a worked example illustrating the 50%-of-median-income threshold, and a common-mistake callout on conflating the two concepts.
Relative poverty is defined not by an individual's ability to survive, but by how their income compares to the typical living standards within their own society. A person is generally considered to be in relative poverty if their household income falls below a set proportion of the median income for that society -- most commonly, below 50% of median income (some studies use 60%). Because the median income differs enormously between countries and changes over time, the relative poverty line is not a fixed dollar figure like the absolute poverty line; it moves whenever the income distribution of a society shifts.
This makes relative poverty fundamentally a measure of inequality, not of physical deprivation. A household in relative poverty in a high-income country may still have access to running water, electricity, and schooling -- resources an absolutely poor household elsewhere might lack entirely. What relative poverty captures is exclusion: the inability to participate fully in the social and economic life that is considered normal in that particular society, because one's income lags far behind the typical (median) household.
| Feature | Absolute poverty | Relative poverty |
|---|---|---|
| Benchmark | Fixed threshold (e.g. World Bank $2.15/day) | Percentage of median income (e.g. below 50%) |
| What it measures | Ability to meet basic survival needs | Position relative to a society's living standards |
| Changes over time? | Only if the fixed threshold itself is revised | Rises and falls automatically as median income changes |
| Can it be eliminated? | Yes, in principle, if all incomes rise above the threshold | No -- as long as any income inequality exists, someone falls below the relative line |
Applying the 50%-of-median-income threshold
- Suppose the median household income in a country is $40,000 per year.
- The relative poverty line at 50% of median income is therefore $20,000 per year.
- Any household earning less than $20,000 -- regardless of whether that income covers their basic food, shelter, and clothing needs -- is classified as being in relative poverty.
- If median income later rises to 25,000, even if the poorer household's own income has not changed.
- This shows why relative poverty is tied to the distribution of income across society, not to any fixed standard of survival.
Common mistake: Students often assume that if absolute poverty is falling, relative poverty must be falling too. This is not necessarily true. A country can see absolute poverty fall (more people can afford basic necessities) while relative poverty rises, if incomes at the top of the distribution grow much faster than the median, or if the median itself grows faster than the incomes of the poorest households.
Relative poverty is best understood as one practical way economists operationalize the broader concept of income inequality: it draws a specific line (typically 50% of median income) below which a household is judged to be excluded from the society's normal living standards, even if it is not deprived in an absolute sense.
- Relative poverty = income below a set percentage (commonly 50%) of a society's median income.
- It is a measure of inequality, not of physical survival -- unlike absolute poverty's fixed threshold.
- The relative poverty line shifts whenever median income shifts, so it can never be permanently 'solved' while inequality exists.
- A household can escape absolute poverty yet remain in relative poverty, and vice versa.
- Relative poverty is society-specific: the same income could count as relative poverty in a high-income country but not in a low-income one.
Multidimensional Poverty
Defines multidimensional poverty as deprivation that extends beyond low income to include inadequate access to education, healthcare, clean water, sanitation, and decent living standards. The key insight is that two households with identical income can experience very different levels of genuine welfare depending on their non-income access to services, so income-only measures can under- or over-state true poverty. Contains: text explanation, a comparison table distinguishing multidimensional poverty from absolute and relative poverty, a worked example showing how an income-poor household can be non-income-rich (and vice versa), and a common-mistake callout.
Most everyday discussions of poverty focus on money: how much income or wealth a household has. But economists recognize that a household's true standard of living depends on more than the number on its pay slip. Multidimensional poverty describes deprivation that goes beyond low income to include limited access to education, healthcare, clean water, sanitation, housing quality, and other components of an adequate standard of living.
A household might have an income just above a country's poverty line, yet still lack access to a functioning school, a clinic within reasonable distance, or safe drinking water. Conversely, a household with a modest income might live in a country with strong public provision of education and healthcare (discussed elsewhere in this subtopic), meaning its members are not deprived in these dimensions even though their income is low. Because of cases like these, measuring poverty by income alone can miss important aspects of genuine hardship — or fail to capture where deprivation is most severe.
| Poverty concept | What it measures | Basis |
|---|---|---|
| Absolute poverty | Whether a household can afford basic necessities (food, shelter, clothing) | Fixed income threshold, e.g. a global poverty line |
| Relative poverty | How a household's income compares to others in the same society | Income relative to the median or average income |
| Multidimensional poverty | Whether a household has adequate access to education, healthcare, and other living-standard essentials | Non-income indicators of deprivation, not income alone |
Why income alone can mislead
- Household A earns just above the absolute poverty line, so income-based measures classify it as 'not poor'.
- However, Household A lives in a remote area with no nearby clinic, an under-resourced school, and no piped water — it is deprived across several non-income dimensions.
- Household B earns exactly at the absolute poverty line, so an income measure classifies it as 'poor'.
- But Household B lives where public healthcare and education are well provided, so it is not deprived in those dimensions.
- A purely income-based poverty measure would treat A and B as similarly situated (or even rank A as better off), while a multidimensional view reveals that A actually experiences more severe overall deprivation.
Common mistake: students often treat multidimensional poverty as simply 'poverty caused by low income' or assume it is just another way of describing absolute poverty. It is a distinct concept — it assesses deprivation directly in areas like education, healthcare, and living standards, and a household can experience multidimensional deprivation even if its income is not classified as poor.
Multidimensional poverty matters for policy because it shows why raising incomes alone (e.g. through welfare payments) may not eliminate hardship — governments may also need to directly provide or improve access to merit goods such as education and healthcare to reduce non-income deprivation.
- Multidimensional poverty = deprivation beyond income, including access to education, healthcare, and living standards
- It is distinct from both absolute poverty (fixed income threshold) and relative poverty (income relative to others)
- A household can be income-poor but not multidimensionally poor, or vice versa
- Highlights why income-only poverty measures can miss real deprivation
- Justifies government provision of merit goods (education, healthcare) as a poverty-reduction tool, not just income transfers
Unemployment as a Cause of Poverty
Explains why unemployment is one of the most direct causes of poverty: losing a job removes a household's primary (often only) source of income, forcing reliance on savings, credit, or state welfare, and pushing households below absolute or relative poverty lines. The key insight is that the longer unemployment persists, the deeper and more entrenched the poverty becomes, especially where welfare safety nets are weak or absent. Contains: text explanation, a worked example tracing a household's income collapse after job loss, and a common-mistake callout distinguishing unemployment from underemployment as poverty causes.
Employment is the primary mechanism through which most households in a market economy obtain income. When a worker becomes unemployed, that flow of wages stops immediately, while many essential expenses -- rent or mortgage payments, food, utility bills, and debt repayments -- continue. This mismatch between a sudden loss of income and the persistence of fixed costs is one of the most direct routes into poverty, whether measured in absolute terms (falling below a fixed subsistence threshold, such as the World Bank's $2.15/day line) or in relative terms (falling well below the median income of a household's own society).
The link between unemployment and poverty operates through several channels. First, loss of earned income removes the household's main means of meeting basic needs, forcing many households to draw down savings, sell assets, or take on debt. Second, prolonged unemployment can lead to skills erosion and loss of confidence, making re-entry into the labour market progressively harder -- a pattern closely associated with structural and long-term (or 'hysteresis') unemployment. Third, unemployment often has knock-on effects on dependants: children in households where the main earner is unemployed may face reduced access to nutrition, healthcare, and education, contributing to the intergenerational transmission of poverty. Finally, in countries with limited welfare provision, the absence of unemployment benefits or social security means that job loss translates almost immediately into severe hardship, whereas in economies with generous welfare payments the fall into poverty may be slower or partially cushioned.
Common mistake: Students often treat 'unemployment' and 'underemployment' as interchangeable causes of poverty. Unemployment means a person actively seeking work has no job and therefore no wage income at all. Underemployment means a person has work but it is insufficient (too few hours, or below their skill level), so they still earn some income, just not enough to escape poverty. Both can cause poverty, but the mechanism differs: unemployment removes income entirely, while underemployment reduces it below an adequate level. Answers should specify which mechanism is being described.
Tracing a household's fall into poverty after job loss
- A household relies entirely on the wage of one full-time worker; this wage sits comfortably above the relative poverty line (50% of median income).
- The worker is made redundant when their firm downsizes during an economic downturn, so the household's earned income falls to zero.
- In the short term, the household draws on savings and may receive limited unemployment benefits (if available), but total income drops sharply below its previous level.
- Fixed costs such as rent and utility bills do not fall alongside income, so the shortfall must be met by borrowing or by cutting spending on food, heating, or healthcare.
- If unemployment persists for months, savings are exhausted and debt accumulates; household income falls below both the relative poverty line and, in severe cases, an absolute poverty threshold.
- Explain: this shows that the shift from employed to unemployed status is the direct trigger for the household's move into poverty, with the depth of poverty increasing the longer joblessness lasts and the weaker any welfare support is.
Exam tip: When asked to explain how unemployment causes poverty, structure your answer around the chain of reasoning: job loss → loss of wage income → inability to meet essential/fixed costs → reliance on savings, debt, or welfare → fall below the poverty line. Naming the specific mechanism (income loss, skills erosion, effects on dependants, or weak welfare provision) and linking it explicitly to a poverty measure (absolute or relative) will earn stronger marks than a general statement that 'unemployment is bad for the poor'.
- Unemployment removes a household's main (often only) income source, while fixed costs like rent and bills continue unchanged.
- This income-expenditure mismatch pushes households below absolute poverty lines (e.g. $2.15/day) or relative poverty lines (e.g. below 50% of median income).
- Prolonged unemployment causes skills erosion and reduced re-employability, deepening and prolonging poverty (linked to structural/long-term unemployment).
- Unemployment can harm dependants' access to nutrition, healthcare, and education, contributing to intergenerational poverty.
- Underemployment is a distinct cause of poverty: the person still earns income, but not enough, unlike unemployment where income falls to zero.
- Weak or absent welfare/unemployment benefits mean job loss translates more quickly and severely into poverty.