2019 HSC Economics: Worked Solutions

Worked solutions to the 2019 HSC Economics examination.

Get the paper first. These solutions describe each question rather than reproducing it, so open the official paper alongside. NESA publishes it free in the 2019 Economics exam pack. The answers below are checked against the official marking guidelines. The explanations are our own.

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Section I: multiple choice

Answer key

Q	A	Q	A	Q	A	Q	A
1	A	6	A	11	B	16	A
2	D	7	B	12	D	17	C
3	C	8	A	13	A	18	B
4	B	9	C	14	A	19	C
5	B	10	D	15	B	20	D

The reasoning

1. Feature of globalisation. A. The international division of labour, meaning production stages allocated across countries according to comparative advantage. The other three options all describe the reverse of globalisation: more protection, less efficiency, less integration.

2. The G20. D. A government forum for the coordination of economic policies. It is not a trading bloc, has no free trade agreement, and issues no common currency. It has no treaty and no enforcement power, so its influence comes entirely from coordinating what member governments choose to do.

3. Benefit of an AUD appreciation. C. Decreased foreign debt repayments, because the AUD cost of servicing foreign-currency-denominated debt falls through the valuation effect. Options A and B are consequences of an appreciation but not benefits, since a larger trade deficit is a cost. Option D is simply false, because an appreciation reduces international competitiveness.

4. Least influenced by political constraints. B. Monetary policy. The RBA is operationally independent, so the Board sets the cash rate without requiring government approval or legislation. Fiscal policy requires a Budget and parliamentary passage, and labour market and microeconomic reform create identifiable losers who organise politically. That independence is why inflation targeting has been credible for three decades.

5. Cause of a rise in the participation rate. B. More parents returning to the workforce adds people to the labour force. Earlier retirement and more students in further education both remove people from it. Joining the defence force is a change from unemployed to employed, and both states are inside the labour force, so participation is unchanged. That last distinction is the one being tested.

6. Effect of an interest rate increase. A. Economic growth decreases and consumer spending decreases. Higher rates raise the cost of borrowing and the return to saving, reducing consumption and investment. Option C fails on its first half, since business investment falls. Option D fails because unemployment rises. Both halves must be right.

7. NOT a reason for low wage growth. B. Low unemployment. A tight labour market means employers compete for scarce workers, which raises wage growth, and that is the Phillips curve relationship. Low inflation, low economic growth and low productivity growth all genuinely contribute to weak wage growth, which is why they appear as distractors.

8. Sectors contributing most to export income. A. Mining and services. Mining is by far the largest, and services, dominated by education and tourism, is the second. Agriculture is significant but much smaller, and manufacturing is a minor export category despite being a major import one.

9. Trade balance and economic growth. C.

Trade balance = X − M = 250 − 350 = −100   →  DEFICIT

Injections = I + G + X = 350 + 400 + 250 = 1000
Leakages   = S + T + M = 200 + 300 + 350 =  850

Injections > leakages  →  the economy is expanding  →  POSITIVE growth

You have to compute both, and the two go in opposite directions, producing a trade deficit alongside positive growth. Grouping the six letters correctly into injections and leakages is the whole question.

10. Central bank reduces the cash rate. D. An increase in asset prices. Lower interest rates reduce the rate at which future returns are discounted, raising the present value of shares and property, and they make borrowing to buy assets cheaper. Consumer expenditure rises rather than falls, unemployment falls rather than rises, and the currency depreciates rather than appreciates as the interest rate differential narrows.

11. Lorenz curve shift and tax changes. B. The curve moved towards the line of equality, so both changes must be progressive: increase the top marginal rate of tax, taking more from high income earners, and decrease the GST, relieving a regressive tax that falls hardest on low income earners. Both push the same way, which is what the question is checking.

12. Net foreign liabilities as a share of GDP. D.

Net foreign liabilities = net foreign debt + net foreign equity
                        = 900 + 100 = $1000 billion

NFL as % of GDP = 1000 ÷ 1800 × 100 = 55.6%

The 50.0% option uses net foreign debt only, which is the standard error. The current account deficit figure is a distractor and appears in neither calculation.

13. Inflation falls from 3% to 2%. A. Prices are increasing on average. Inflation of 2% is still positive, so prices are still rising, just more slowly. That is disinflation, not deflation, since deflation requires a negative inflation rate. Nothing in the data tells you where unemployment sits relative to the NAIRU, so C and D are unsupported.

14. Part-time employment. A.

Labour force = participation rate × working-age population
             = 50% × 10 000 000 = 5 000 000

Unemployed = 10% × 5 000 000 = 500 000
Employed   = 5 000 000 − 500 000 = 4 500 000
Part-time  = 4 500 000 − 4 000 000 = 500 000

Four steps, and each depends on the last. Option D (4 500 000) is total employment, the trap for candidates who stop one line early.

15. New equilibrium income. B.

MPS = ΔS ÷ ΔY = (100 − 50) ÷ (450 − 250) = 50 ÷ 200 = 0.25
k = 1 ÷ MPS = 4
ΔY = 35 × 4 = $140 billion
New Y = 450 + 140 = $590 billion

Option A adds the injection without multiplying it.

16. Contractionary AND discretionary. A. Both conditions must hold. A decreased tax-free threshold brings more income into the tax net, raising revenue and withdrawing spending power, which is contractionary, and it requires a deliberate legislative decision, which is discretionary. Option B is discretionary but expansionary. Options C and D are both automatic stabilisers, because they happen when the economy changes, not because anyone decided.

17. Foreign aid out and pensions in. C. The two transactions sit in different accounts, and that is the whole question.

Aid given to build a road is a capital transfer, because it funds the acquisition of a fixed asset in the receiving country. Capital transfers belong in the capital account, and money leaving Australia makes it a debit. Pensions received from overseas are ordinary current transfers with no asset involved, so they are a secondary income credit on the current account.

The distinction to learn is not aid against pensions, but capital transfers against current transfers. Aid tied to constructing or acquiring a fixed asset, such as a road, a bridge or a hospital building, goes to the capital account. General budget support, humanitarian relief and food aid are current transfers and go to secondary income. Compare this with 2025 Question 10, where unconditional aid was correctly secondary income. The same word, "aid", lands in a different account depending on what it buys.

Primary income is different again, covering returns to the factors of production: interest, dividends and wages.

18. Increase in the Trade Weighted Index. B. Both factors must raise demand for the AUD. Rising terms of trade mean higher export prices, so foreign buyers must purchase more AUD. Falling global interest rates relative to Australian rates widen the differential in Australia's favour, attracting capital inflow and further demand for the AUD. Read the second column carefully, because it is expressed as global rates relative to Australian rates, so a decrease is favourable to the AUD.

19. Tariff revenue equivalent to a quota of 20 000. C. The tariff must raise the domestic price to the level at which imports equal 20 000 items, which is the same restriction the quota imposes. Reading the graph, that price is $4, so the tariff is $1 above the world price of $3.

Tariff revenue = tariff × imports = $1 × 20 000 = $20 000

Note the economic point behind the question. A tariff and a quota can produce identical domestic production and price outcomes, and the difference between them is who captures the rent. Under a tariff the government collects it, and under a quota it goes to whoever holds the import licence. That is the standard argument for preferring tariffs to quotas.

20. Subsidy that eliminates imports. D. A subsidy shifts the domestic supply curve down by the subsidy amount, so producers supply more at every price the market offers. Imports reach zero when domestic supply meets domestic demand entirely, and the price the market offers is still the world price of $3, because a subsidy does not raise the domestic price.

So the condition is that quantity supplied at the subsidised return equals quantity demanded at $3. Reading the graph, that requires producers to receive an effective $7, which is a subsidy of $4 on top of the $3 world price.

Compare this with Question 19 and note why the subsidy is so much larger than the $1 tariff. The tariff cut imports only partly, and it did so from both ends, by raising domestic supply and choking domestic demand down to the quantity demanded at $4. The subsidy has to close the entire import gap from one end only, because demand stays at its $3 level, which is the largest quantity demanded anywhere on the diagram. Eliminating imports without touching consumers is expensive.

That is also the welfare point. With a subsidy the domestic price stays at $3, so consumers are unaffected and there is only one deadweight loss triangle rather than two. The whole cost falls on taxpayers, which is why economists generally prefer subsidies to tariffs even though they cost government more.

Where marks were lost. Question 9 required two separate calculations pointing in opposite directions. Question 14 caught candidates who stopped at total employment. Question 5 caught candidates who thought moving from unemployed to employed changes the participation rate.

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Section II: short answer

Question 21 (10 marks): exchange rates

(a) Outline a reason for the change in the supply of the AUD (2 marks).

The diagram showed an increase in the supply of AUD.

An increase in Australian demand for imports increases the supply of Australian dollars on the foreign exchange market, because Australians must sell AUD to obtain the foreign currency needed to pay for imported goods and services. The supply curve shifts right, placing downward pressure on the value of the AUD.

Any of these earn the marks provided you give the mechanism: more imports, more outbound tourism, increased capital outflow, reduced capital inflow, or speculation that the AUD will fall.

(b) Why the AUD/USD rate might not move with the TWI (3 marks).

The Trade Weighted Index measures the AUD against a basket of the currencies of Australia's major trading partners, weighted by each partner's share of Australia's trade. The US dollar carries a weight well below 10%, far smaller than its prominence in financial reporting suggests, while the Chinese renminbi carries several times that weight.

The two measures can therefore diverge in two ways. First, the AUD may move in opposite directions against different currencies, appreciating against the USD while depreciating against the renminbi, yen and won, so the weighted average falls even as the headline bilateral rate rises. Second, the AUD/USD rate reflects developments in the United States as much as in Australia, so a broad strengthening of the USD against all currencies lowers the AUD/USD rate without Australia's overall competitive position changing at all.

This is why the TWI is the better measure of Australia's international competitiveness.

(c) Effects of a depreciating AUD on the accounts within the balance of payments (5 marks).

The question says accounts, plural, so cover both the current account and the capital and financial account.

Balance on goods and services. Immediately, the depreciation raises the AUD price of imports while contracts and volumes are unchanged, so import values rise and the balance deteriorates, which is the descending arm of the J-curve. Over the medium term volumes respond: exports are cheaper in foreign currency so export volumes rise, and dearer imports induce substitution towards domestic production. Once the Marshall-Lerner condition is satisfied, the balance improves.

Net primary income. The AUD value of foreign-currency-denominated debt rises, and so does the AUD cost of servicing it, which is a valuation effect that increases debits on net primary income and worsens the current account. Working the other way, returns on Australian-owned foreign assets are worth more in AUD, increasing credits. The net effect depends on whether Australia's foreign liabilities exceed its foreign assets, and on how much of that exposure is hedged or AUD-denominated.

Financial account. A depreciation makes Australian assets cheaper in foreign currency terms, which can attract foreign direct and portfolio investment as a credit. But the effect is ambiguous, because if investors expect further depreciation they anticipate a capital loss when converting back, and inflow falls instead.

The accounting relationship. Because the balance of payments must sum to zero under a float, an improvement in the current account is necessarily matched by an offsetting movement in the capital and financial account. The two are not independent.

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Question 22 (10 marks): growth and development

(a) Outline the relationship between economic growth and development (2 marks).

Economic growth is an increase in real GDP over a period of time, which is a quantitative measure of output. Economic development is a broader qualitative concept covering improvements in living standards, including health, education, income distribution and access to services, measured by the Human Development Index.

Growth is generally a necessary but not sufficient condition for development. It generates the income and government revenue that fund health and education, but it translates into development only if that income is distributed and invested in ways that reach the population.

The "necessary but not sufficient" formulation is worth the second mark on its own.

(b) Examine TWO reasons for differences in living standards between nations (4 marks).

Two marks each. Examine asks you to inquire into the reason, not simply name it.

Institutional quality and political stability. Nations with the rule of law, secure property rights, enforceable contracts and low corruption provide an environment in which firms will commit capital to long-horizon projects. Investment raises the capital stock and productivity, and government revenue funds health, education and infrastructure instead of being diverted. Where institutions are weak, investment carries a higher risk premium, capital flows elsewhere, and revenue that could fund development is lost to corruption. This is why nations with comparable resource endowments can display very different living standards.

Human and physical capital. Nations with high levels of education, health and infrastructure have far higher labour productivity, and productivity determines income per capita. Low-income nations face a self-reinforcing constraint: low incomes mean low domestic savings, so there is little to invest in the schools, hospitals, transport and power generation that would raise productivity, which is a poverty trap. Human capital is simultaneously an input to growth and an outcome of development, which is why the two move together once the cycle is broken.

(c) Assess the effectiveness of ONE development strategy in a country other than Australia (4 marks).

Name the country. Assess requires a judgement.

Country: China. Strategy: Special Economic Zones.

From 1980 China established SEZs along the southern and eastern coastlines, beginning with Shenzhen and later including Shanghai and the Guangdong cities. Within these zones, tax concessions, relaxed regulation and permission for foreign ownership attracted foreign direct investment on a scale the domestic economy could not have funded itself. FDI brought not only capital but technology and management practice, and the zones drew hundreds of millions of workers out of low-productivity agriculture into higher-productivity export manufacturing.

The case for effectiveness. The strategy was extraordinarily successful in its own terms. It was central to sustained growth averaging close to 10% a year for three decades, to the movement of roughly 500 million people out of extreme poverty, and to a rise in HDI into the very high band. The staged, geographically contained design also allowed the government to test liberalisation without exposing the whole economy at once.

The limitations. The benefits were geographically concentrated. Coastal provinces grew far faster than inland ones, widening regional inequality, and the hukou household registration system limited rural migrants' access to urban education and health services even while they worked in the zones. The Gini coefficient rose to around 0.47. Rapid industrialisation also imposed severe environmental costs, and the export orientation left the economy exposed to the international business cycle, as the 2008 crisis demonstrated.

Judgement. Highly effective at generating growth and aggregate development, but the geographic targeting that made it politically manageable is the same feature that made its benefits uneven, which is why subsequent policy has focused on the Western Development Strategy and rural poverty alleviation.

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Question 23 (10 marks): environmental economics

(a) Outline a cost associated with achieving ecologically sustainable development (2 marks).

Achieving ESD typically reduces the economy's productive capacity in the short to medium term. Sustainable production methods generally cost more than the methods they replace, including renewable generation, emissions abatement equipment and restrictions on resource extraction, so firms produce less output at each price level and aggregate supply falls. There is also an opportunity cost, because resources directed to environmental protection are resources not available for consumption or for expanding capacity elsewhere. Consumers face higher prices, and government faces higher expenditure on transition assistance and lower royalty revenue.

(b) Why a public beach may NOT be a public good (2 marks).

A public good must be both non-rival and non-excludable. A public beach fails the non-rivalry test once it becomes congested, because additional users reduce the space, amenity and enjoyment available to everyone already there, so one person's consumption does diminish another's. A crowded beach is rival in exactly the way a street light is not.

Access can also be restricted in some circumstances, through entry fees, closures or restricted parking, which weakens non-excludability as well.

The word doing the work is congestion. The examiners are testing whether you understand that "publicly provided" and "public good" are different things.

(c) How market failure creates negative externalities (2 marks).

The price mechanism allocates resources on the basis of private costs and benefits, meaning those experienced by the buyer and the seller. It does not register costs imposed on third parties, such as pollution, congestion or waste, because nobody in the transaction pays for them.

As a result, the marginal private cost faced by producers sits below the marginal social cost borne by society. Price is set too low and output too high relative to the socially optimal level, so the market over-produces the good and generates a deadweight loss. The externality exists precisely because the market has no mechanism to price it.

(d) Explain how market-based policies preserve the natural environment (4 marks).

Market-based policies work through the price mechanism, changing the financial incentives facing producers and consumers instead of mandating behaviour directly. Their purpose is to internalise the externality, making private costs reflect social costs so that decisions taken in self-interest produce the socially optimal outcome.

Taxes and charges on polluting activities raise the marginal private cost of production towards the marginal social cost. Facing a higher cost, producers reduce output, switch inputs, or invest in abatement, and consumers substitute towards less damaging alternatives. Australia's carbon pricing mechanism operated on this principle from 2012 to 2014, as does the waste levy applied to landfill.

Subsidies and rebates work in the opposite direction on activities with positive externalities, raising the private benefit towards the social benefit so that the market stops under-providing them. Household solar rebates and feed-in tariffs are the clearest Australian example.

Tradable permits cap the total quantity of a pollutant or resource and allow the permits to be traded. Firms able to abate cheaply do so and sell their surplus permits, while firms facing high abatement costs buy permits instead. Abatement is therefore concentrated wherever it is cheapest, achieving the environmental target at the lowest total cost to the economy. Water trading in the Murray-Darling Basin operates this way.

The central advantage of market-based instruments over regulation is that they achieve the outcome efficiently without the regulator needing to know each firm's abatement costs, because the price signal elicits that information. They also create an ongoing incentive to innovate, since every additional tonne abated saves money, whereas a regulation gives no reward for exceeding the standard.

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Question 24 (10 marks): monetary policy

The data showed real GDP rising from $1000bn to $1220bn, CPI from 100 to 132, unemployment falling from 8.9% to 3.5%, and the current account deficit widening from −4% to −5.5% of GDP.

(a) Calculate the inflation rate in Year 3 (1 mark).

Inflation = (CPI₃ − CPI₂) ÷ CPI₂ × 100
          = (132 − 110) ÷ 110 × 100
          = 20%

Answer: 20%. Divide by the previous year, not the base year.

(b) Justify an appropriate monetary policy stance, with reference to the indicators (4 marks).

You must state the stance explicitly and then justify it using every indicator given. The data are there to be used.

Stance: contractionary (tightening) monetary policy, meaning an increase in the cash rate.

Every indicator points to an economy growing beyond its sustainable capacity. Inflation accelerated to 20% in Year 3, far above any reasonable target band and up sharply from 10% in Year 2. Unemployment fell from 8.9% to 3.5%, almost certainly below the NAIRU, so competition for scarce labour is generating wage pressure that will feed into further inflation. Real GDP growth accelerated from 10% to about 10.9%. And the current account deficit widened from 4% to 5.5% of GDP, consistent with excess domestic demand spilling into imports.

Raising the cash rate raises interest rates throughout the economy. Higher borrowing costs and a higher return to saving reduce consumption and investment, contracting aggregate demand. Lower demand reduces the derived demand for labour, returning unemployment towards the NAIRU, and relieves the demand-pull pressure on prices. Reduced domestic demand also cuts import spending, improving the cyclical component of the current account deficit. Higher interest rates additionally attract capital inflow, appreciating the currency, which lowers import prices and reinforces the disinflation.

The cost is that slower growth and higher unemployment are the mechanism by which inflation is reduced, which is the short-run Phillips curve trade-off. With inflation at 20%, that cost is clearly justified, because the alternative is entrenched inflationary expectations that are far more expensive to unwind later.

(c) Explain the limitations of monetary policy in Australia (5 marks).

Time lags. The implementation lag is short, since the Board meets several times a year and a change takes effect immediately, but the impact lag is long, typically 9 to 18 months, as the change works through consumption, investment, asset prices, cash flow and the exchange rate. Policy set for conditions today takes effect in conditions that may have changed, and it can prove pro-cyclical.

It is a blunt instrument. The cash rate applies uniformly across the whole economy, so it cannot target a particular region, industry or income group, and tightening to slow an overheating housing market in one city also suppresses activity everywhere else. Its effects are also unevenly distributed, falling hardest on households with mortgages and benefiting savers, which is why its distributional consequences must be addressed fiscally.

Conflicting objectives. Monetary policy has one instrument and several objectives, so it cannot pursue them simultaneously. Restraining inflation requires slowing growth and raising unemployment, while supporting employment risks inflation. The instrument can address only one target at a time.

The effective lower bound. Once the cash rate approaches zero, as it did in Australia in 2020 at 0.10%, conventional policy is exhausted and the RBA must resort to unconventional measures such as bond purchases, yield curve control and term funding, whose effects are less predictable.

External influences. Australia is a small open economy, so global interest rates, the international business cycle, commodity prices and financial contagion all affect domestic conditions and lie outside the RBA's control. Setting the cash rate far from global rates produces large capital flows and exchange rate movements that may be undesirable in themselves.

It cannot address supply-side problems. Monetary policy operates on aggregate demand, so it is largely powerless against cost-push inflation from energy prices or supply chain disruption, and it cannot reduce structural unemployment, which requires microeconomic and labour market policy.

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Section III: stimulus-based extended response

Question 25: sustained budget deficits, growth and external stability

The stimulus described the post-2008 policy response encouraging economic activity, with public and private borrowing funding investment, consumption and imports and contributing to Australia's uninterrupted growth, alongside record asset prices and household debt, net foreign debt above $1 trillion, and the lowest household savings rate since 2007. Two Treasury charts showed the Budget balance and general government net debt.

Thesis. Sustained budget deficits supported economic growth by maintaining aggregate demand through and after the global financial crisis, but by adding to the savings and investment gap they contributed to rising net foreign debt and household leverage. The deficits therefore purchased growth at a measurable cost to external stability, and whether that trade was worthwhile depends on whether the borrowing funded investment or consumption.

The plan:

1. Define the budget outcome, fiscal stance, and external stability with its measures: the current account as a share of GDP, net foreign debt and liabilities as a share of GDP, and the debt servicing ratio.

2. Growth, the positive case. Use both the chart and the text. Deficits inject demand through the multiplier, and the automatic stabilisers cushioned the downturn without any decision being made. Australia was one of very few developed economies to avoid recession in 2008 and 2009. The stimulus explicitly credits the policy response with "uninterrupted economic growth", so quote it.

3. The composition question, where the strongest responses separate. Deficits that fund capital expenditure such as infrastructure and education raise productive capacity and generate the future income to service the debt. Deficits that fund recurrent expenditure such as transfers and consumption support demand today without adding to capacity. The distinction determines whether the debt is self-financing.

4. External stability and the savings and investment gap. This is the core mechanism, and the one that ties the whole question together:

   CAD ≡ investment − national savings
   

   A budget deficit is negative public savings. It reduces national savings, widening the gap between domestic investment and domestic savings, which must be filled by foreign capital. That inflow is recorded on the financial account and creates foreign liabilities, whose servicing appears as net primary income debits and worsens the current account in future years. Use the stimulus figure of net foreign debt above $1 trillion.

5. Crowding out. Government borrowing competes with private borrowers for savings, raising interest rates and displacing private investment. Note the qualification: crowding out is minimal when the economy is operating below capacity, which was the case after 2008.

6. The counter-arguments on external stability. Australia's public debt is AUD-denominated, so it carries no currency risk. Net debt as a share of GDP remained low by international standards. The debt servicing ratio stayed manageable because global interest rates were at historic lows. And the Pitchford thesis argues that a current account deficit driven by private-sector borrowing decisions is not a policy problem, because the borrowers bear the risk and expect a return.

7. The private-sector counterpart. The stimulus points at it directly: record household debt, record asset prices, and the lowest savings rate since 2007. Low interest rates encouraged household leverage, which is a greater vulnerability than public debt, because households cannot tax and have shorter horizons.

8. Discussion and judgement. Sustained deficits supported growth effectively when the economy was below capacity, but persisting with them through the subsequent expansion reduced the fiscal capacity available for the next shock. That point was vindicated in 2020, when Australia was able to respond at scale precisely because net debt had remained comparatively low. External stability deteriorated on the debt measures while the underlying vulnerability shifted from the public sector to households.

Question 26: microeconomic policies, employment and inflation

The stimulus described reforms that "opened markets to increased competition" and transformed "a relatively closed and regulated economy into one that is more efficient, flexible and open", reducing the industries supported by subsidies and tariffs, "notably in manufacturing". Two graphs ran from 1980 to 2017: labour productivity with decade averages, and CPI inflation with the RBA target range marked.

Thesis. Microeconomic reform raised productivity and was central to the sustained fall in inflation into the target band, but it achieved this partly through the structural unemployment it created in protected industries, so its effects on employment were negative in the short run and positive only over the long run.

The plan:

1. Define microeconomic policy and identify the reforms: tariff reduction from the 1970s and 1980s, financial deregulation, National Competition Policy from 1995, privatisation and corporatisation of public trading enterprises, labour market decentralisation, and tax reform.

2. The productivity channel. Use the graph and quote decade averages. Reform improves allocative efficiency as resources move to where comparative advantage lies, technical efficiency as competition forces cost minimisation, and dynamic efficiency as firms innovate to survive. Productivity growth raises aggregate supply.

3. Inflation, the direct link and the strongest available argument. Higher productivity lowers unit labour costs:

   Unit labour cost = wages ÷ productivity
   

   Rising productivity allows real wages to rise without raising unit costs, so no cost-push pressure is generated. Reform also lowers prices directly by increasing competition, and tariff reduction lowers the price of imported goods and imported inputs.

4. Use the inflation graph. Inflation fell from double digits in the early 1980s into the RBA's 2 to 3% band from the early 1990s and stayed there. Then handle the attribution problem honestly, because the top band is won here. Inflation targeting from 1993 is the more obvious explanation. The defensible argument is that microeconomic reform made the target achievable at low cost, because without the supply-side improvement, holding inflation at 2 to 3% would have required persistently higher unemployment. The two policies were complements, not rivals.

5. Employment, the negative short run. Removing tariff protection contracted the industries that depended on it. The stimulus names manufacturing. Employment fell in textiles, clothing, footwear and motor vehicles, with the last Australian car manufactured in 2017. The resulting structural unemployment was regionally concentrated in places such as Elizabeth, Geelong and Broadmeadows, and it fell on workers with industry-specific skills and low geographic mobility. The costs were concentrated while the benefits were diffuse.

6. Employment, the positive long run. Higher productivity and growth raise the derived demand for labour. Resources released from protected industries flowed to mining and services, which expanded. Reform also lowers the NAIRU by reducing structural unemployment over time, so the economy can sustain lower unemployment without inflation. Unemployment fell from around 11% in 1992 to the low 5s before 2020.

7. The complication in the graph. Labour productivity growth declined over the 2010s despite reform continuing, which suggests the large one-off gains from opening a closed economy have been exhausted, and that further gains require different and politically harder reforms.

8. Discussion and judgement. The effects on inflation were clearly positive and durable. The effects on employment were negative in the short run, positive in the long run, and unequally distributed throughout. The trade-off is real, and it is the reason microeconomic reform requires accompanying transitional assistance to be politically sustainable.

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Section IV: extended response

Question 27: causes and effects of unequal distribution of income and wealth

The verb is explain, and the question names two things, causes and effects, and two variables, income and wealth. All four must appear, with roughly balanced weight.

Thesis. Income inequality in Australia arises primarily from differences in the labour market, while wealth inequality is far greater and arises primarily from asset ownership and its accumulation across generations. The two reinforce each other, because wealth generates income and income enables the acquisition of wealth.

Causes of income inequality.

• Education, skills and occupation, the single largest determinant. Returns to education have risen with technological change and the shift to a services and knowledge economy.
• Labour market structure. Decentralised wage determination widens the gap between workers with strong bargaining power and those without, and casualisation and the gig economy have expanded insecure, lower-paid work.
• Employment status. The largest single income gap is between the employed and the unemployed, because transfer payments sit well below wage income.
• Age and experience, gender and the gender pay gap, and hours worked, since underemployment and part-time work concentrate among women and younger workers.
• Location, meaning differences between capital cities and regional areas, and between regions.
• Cultural and structural disadvantage, particularly for Aboriginal and Torres Strait Islander Australians and for people with disability.

Causes of wealth inequality. Make the point explicitly that wealth is far more unequally distributed than income, since the top quintile holds a substantially larger share of wealth than of income.

• Asset ownership, dominated by housing and superannuation. Home ownership is the defining division.
• Asset price inflation. A decade of low interest rates raised house and share prices sharply, benefiting existing owners and pricing out new entrants. This is the most significant recent driver.
• Inheritance and intergenerational transfer, which compounds existing advantage.
• Compounding returns. Wealth generates income through rent, dividends and capital gains, which is reinvested, so the gap widens without any change in earning capacity.
• Tax settings. The capital gains tax discount, negative gearing and superannuation concessions all deliver larger benefits to higher-wealth households.

Economic effects.

• Lower aggregate demand, because low-income households have a higher marginal propensity to consume, so redistributing income upwards lowers total consumption.
• Reduced human capital formation, as households without means underinvest in education, wasting productive potential and lowering long-run growth.
• Reduced social mobility, entrenching disadvantage across generations.
• Increased Budget pressure through higher transfer and service demand against a narrower effective tax base.
• For balance, note the counter-argument: some inequality provides the incentive to acquire skills, work and take entrepreneurial risk. The economic question is about the degree of inequality, not its existence.

Social effects. Poorer aggregate health and education outcomes, higher crime, reduced social cohesion, geographic concentration of disadvantage and political polarisation.

Then close the loop. Use the measures, meaning the Gini coefficient, quintile shares and the Lorenz curve, and note that Australia's tax and transfer system is among the most targeted in the OECD, so the Gini for market income is substantially higher than for disposable income. Government intervention materially reduces income inequality and does far less about wealth inequality, which is why the two have diverged.

Question 28: effects of protectionist policies on the Australian and global economy

Two domains named, so give each real weight. A response that covers only Australia cannot reach the top band.

Thesis. Protectionist policies impose net welfare losses on both the protecting economy and the world economy by preventing specialisation according to comparative advantage, but their costs are diffuse while their benefits are concentrated, which explains why they persist despite the analytical consensus against them.

Methods and mechanisms. Cover tariffs, meaning a tax on imports raising the domestic price, subsidies, which lower producers' costs without raising the price to consumers, quotas, which restrict quantity directly, and local content rules and administrative barriers. Draw the tariff diagram and refer to your own labels: domestic price rises, domestic production rises, consumption falls, imports fall, government collects revenue, and there are two deadweight loss triangles, one a production inefficiency and the other a consumption inefficiency.

Effects on Australia.

• Consumers lose through higher prices, less choice and reduced real income. Because protection concentrates on necessities such as food and clothing, its effects are regressive.
• Protected producers gain in the short term through higher output, employment and profits.
• Firms using protected inputs lose, because protection on steel and components raises the costs of the industries downstream.
• Efficiency falls. Resources are locked into industries where Australia lacks comparative advantage, lowering productivity and aggregate supply.
• Retaliation. As a small, trade-dependent economy with a comparative advantage in agriculture and resources, Australia is disproportionately harmed by retaliation, and Australia's own liberalisation from the 1970s onwards strengthened its standing to argue against protection abroad.
• The counter-case: protection defends employment during structural adjustment, supports infant industries, guards against dumping, and maintains capability in areas of national security. Those arguments gained force after pandemic supply chain disruption exposed the fragility of concentrated global production.

Effects on the global economy.

• Reduced world output. Protection prevents specialisation by comparative advantage, so global production falls below what the same resources could otherwise produce.
• Retaliation and trade wars. The US and China tariff escalation from 2018 is the contemporary example, and the Smoot-Hawley tariffs and the collapse of world trade in the 1930s are the historical one.
• Harm to developing economies, the most important global effect. Agricultural protection in the European Union, United States and Japan excludes developing-country producers from the markets where they hold comparative advantage, while subsidised surpluses depress world prices. Developing economies lose twice, and this materially widens global income inequality.
• Supply chain disruption, because modern production crosses borders repeatedly and a tariff is levied at each crossing.
• Institutional erosion. The stalled Doha Round and the incapacitation of the WTO Appellate Body in 2019 removed the constraint that previously restrained unilateral action, encouraging further protection.

Close by explaining the political economy, which is what the question is really testing. The gains from protection are concentrated on a small, identifiable, organised group of producers and workers, while the costs are spread thinly across millions of consumers who each lose a small amount and none of whom will organise about it. That asymmetry, not any economic argument, is why protection persists.

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What to do with this paper

Do it timed and closed-book first. Mark against NESA's published guidelines before reading any of the above, then classify every lost mark as knowledge, verb, data, timing or diagram.

Question 24(b) is the model for an entire question type: justify a policy stance using the indicators provided. The technique is mechanical once you see it. State the stance in the first line, then take each indicator in turn, say what it shows, and say what that implies for the stance. Candidates lose marks by writing a general account of monetary policy and never touching the numbers.

Related: 2020 worked solutions · 2021 worked solutions · The complete diagram guide · Every formula you need

Questions are described rather than reproduced. The 2019 examination paper and marking guidelines are © NSW Education Standards Authority and are available free from the NESA website. Answers verified against the official marking guidelines; explanations are our own.