Japan's Economic Challenges — Ageing, Deflation, Public Debt and Supply-Side Policy

Answers

(a) Effect of the ageing population on public-sector debt [4] — explain

Table 1 shows the population aged 65 and above rising from 26.6% in 2016 to 28.4% in 2020 — an ageing population. This affects public finances from both sides of the budget. On the spending side, government expenditure (G) on healthcare, long-term care and pensions rises (Extract 7). On the revenue side, a shrinking labour force lowers personal-income-tax revenue, and lower spending by retirees reduces consumption-tax revenue (T falls). With G rising and T falling, the budget moves into deficit (G > T); financing the deficit through borrowing raises public-sector debt — consistent with the jump to 266.2% of GDP in 2020 in Table 1.

(b) Change in living standards, 2018–2020 [4] — comment

Living standards have a material and a non-material dimension; the data point in opposite directions, so the indicators are useful but not sufficient.

Material living standards likely fell. Real GDP fell (Extract 5: −4.6% in 2020, personal consumption −6.0%); with population roughly constant, real GDP per capita fell, so households had fewer goods and services. Falling output cut the demand for labour, raising unemployment (Table 1: 2.4% to 2.8%) and lowering wages and purchasing power — a fall in the material dimension.

Non-material living standards likely rose. Table 2 shows life expectancy rising (84.2 to 85.0 years), suggesting better nutrition, healthcare and environment, and carbon emissions falling (8.8 to 8.4 tonnes per capita) — better air quality — though the latter partly reflects the fall in output. The Gini coefficient also edged down (0.334 to 0.329), a marginally more equal distribution.

On balance the non-material dimension improved while the material dimension fell; the selected indicators give only a partial picture.

(c) Causes of Japan’s 2020 deflation [4] — explain

Japan’s deflation — the fall in the general price level (Table 1: inflation −0.1% in 2020) — arose from a fall in aggregate demand combined with a rise in aggregate supply. The pandemic cut consumer spending and exports (Extract 5), shifting AD left; through the reverse multiplier the final fall in output is larger. At the same time, the collapse in crude-oil prices lowered firms’ energy and transport costs (Extract 6), shifting SRAS right. Both shifts push the general price level down.

(d) Impact of an ageing population on Japan’s economy [8] — assess

An ageing population means more retirees and fewer workers, arising from a falling birth rate and rising life expectancy; Japan is the world’s oldest major economy (Extract 7).

Adverse impacts. A smaller labour force shrinks the tax base while demand for healthcare, long-term care and pensions rises, worsening the budget deficit and public debt if financed by borrowing. A high and rising debt can erode investor confidence, lowering investment, aggregate demand and actual growth; over the long run, weaker investment lowers productivity and productive capacity, dragging on potential growth. Ageing also lowers productivity directly — fewer dynamic young workers and a shift towards the labour-intensive service sector (Extract 7) — so the IMF estimates demographics alone will cut growth by 0.8 percentage points a year (Extract 8).

However, the impact can be mitigated by policy. To offset the shrinking labour force, Japan can raise the retirement age, encourage female participation and admit more working-age immigrants (Extracts 7–9). If these succeed, they prevent — and with higher-skilled immigrants may even reverse — the fall in the quantity and quality of factors, supporting productivity and capacity. Automation and robotics, where Japan leads, can substitute for scarce labour, though Extract 7 notes “there’s probably a limit to how much these measures can fight the greying tide.”

Judgement. Ageing will certainly weigh on Japan’s economy — on growth, productivity and the public finances. But the extent of the harm depends on the effectiveness of the government’s response: well-designed labour-market and immigration reforms can substantially blunt the demographic drag, even if they cannot fully eliminate it. The impact is therefore serious but conditional on policy, not inevitable in its full severity.

(e) Are supply-side policies the best way to address Japan’s challenges? [10] — discuss

Japan’s core challenges are slow growth and deflation, driven by ageing, the pandemic and rising public debt. The view is that competition- and trade-oriented supply-side policies — deregulation, removing industry protections, liberalising trade and promoting FDI (Extracts 8–9) — are the best way to address them. My thesis is that these policies are necessary but not sufficient, and on their own not the best response, because they neither tackle the root cause of demand-led deflation nor address ageing directly, and they may aggravate unemployment and debt.

The case for competition-oriented supply-side policy. Greater competition — domestic deregulation plus competition from FDI and freer trade — pushes profit-maximising firms towards cost-efficient methods, lowering unit costs and raising aggregate supply; this raises real GDP (actual growth) and, through higher technology and innovation, productive capacity (potential growth). For an economy facing a demographic productivity drag, raising efficiency is genuinely valuable.

But these policies have limits and side-effects. Sharper competition can make workers redundant as firms streamline, and weaker local firms unable to match larger, more efficient foreign rivals may shut down — raising unemployment. Crucially, a rise in AS lowers the general price level, worsening the very deflation Japan is trying to escape. And these reforms do nothing directly about the ageing population or the collapse in demand.

Other policies are needed. Labour-oriented supply-side measures — training, career opportunities, automation (Extracts 7–8) — raise labour productivity and capacity and address ageing more directly, but they are slow, depend on workers’ willingness and ability to retrain, are costly (worsening debt), and likewise push prices down. Demand-side policy is therefore essential to the deflation problem: expansionary fiscal and monetary policy raise AD, lifting actual growth and generating mild demand-pull inflation that offsets deflation. However, their effectiveness is constrained: weak consumer and business confidence may blunt the response, Japan’s near-zero rates risk a liquidity trap, and expansionary fiscal policy worsens the deficit and may crowd out private spending.

Judgement. Competition- and trade-oriented supply-side policies are not the best single way to address Japan’s challenges. They raise efficiency and potential growth, but they do not reach the root causes — ageing and demand-led deflation — and they can deepen deflation and unemployment. The best response is a coordinated mix: labour-market and innovation-focused supply-side reforms to counter the demographic drag, paired with demand-side policy (and, given the pandemic shock to net exports, trade and exchange-rate measures) to revive demand and reverse deflation. Supply-side policy is a necessary component of the answer, but not the whole of it.