Causes of Rising Income Inequality and Inclusive Growth in Singapore

Answer

Part (a) — Causes of rising income inequality in Singapore [10]

Income inequality describes how unevenly income is distributed across a population, conventionally measured by the Gini coefficient (Singapore’s, before taxes and transfers, has hovered around 0.45). Its rise in Singapore stems chiefly from a widening wage gap, reinforced by intergenerational and institutional factors.

Structural change and the wage gap. Globalisation and technological disruption have pushed Singapore from low-value manufacturing toward a knowledge- and services-based economy. This raises demand for high-skilled labour while the demand for low-skilled labour falls — through automation, offshoring, and an inflow of cheap foreign low-skilled workers that raises its supply.

In the low-skilled labour market, falling demand and rising supply depress wages; in the high-skilled market, rising demand against an inelastic supply (skills take time to acquire) pushes wages up. The gap between the two widens. The growth of the gig economy — freelancers with less stable income and fewer benefits — compounds the divergence at the bottom.

Intergenerational inequity. As the economy matures, upward mobility through education diminishes. Better-educated, higher-income parents can invest more in their children’s education, so future generations from low-income families face lower productivity, weaker labour demand and slower wage growth — entrenching inequality across generations.

Institutional and market factors. A less progressive tax mix (lower direct taxes to attract talent, higher GST), a freer flow of capital that lets the wealthy earn investment income while the poor rely on slower-growing wages, and growing market dominance in some sectors (raising profit and dividend income concentrated among owners) all widen the gap before redistribution.

Part (b) — Are supply-side policies more appropriate than demand-management for inclusive growth? [15]

Inclusive growth requires that the fruits of growth be spread more evenly across society. Whether supply-side policies are more appropriate than demand-management measures turns on which better attacks the root cause — the wage gap — while sustaining growth.

Supply-side policies address the root cause. Skills-upgrading schemes — Workfare Skills Support, the CET masterplan, SkillsFuture Credit — raise the productivity and hence the wages of low-skilled workers, directly narrowing the wage gap. Reducing dependence on cheap foreign labour (Local Qualifying Salary thresholds, higher foreign-worker levies) lifts the demand for, and wages of, local low-skilled workers. Crucially, by raising productivity and potential output, supply-side measures deliver non-inflationary sustained growth — growth and equity together.

Limitations. Effectiveness depends on workers’ receptiveness — older, low-skilled workers may not retrain; results materialise only in the long run; firms lose output during training; and the schemes are costly to fund. Cutting foreign-labour reliance can cause wage-push inflation and leave essential jobs unfilled, deterring investment.

Demand-management addresses outcomes, not causes. A more progressive income tax plus transfers — Workfare Income Supplement, ComCare, the progressive wage model — redistribute after-tax-and-transfer income, raising the disposable income of low earners (whose high MPC also lifts consumption and, via the multiplier, national income). This narrows the post-redistribution gap and cushions the vulnerable.

Limitations. These measures treat symptoms, not the wage gap itself; they strain the budget and raise sustainability concerns; they risk welfare dependency that dulls the incentive to upskill; Singapore’s small multiplier (high import and saving leakages) limits the income effect; raising direct taxes conflicts with attracting talent and may disincentivise work; and minimum-wage-type measures can raise low-skilled unemployment and wage-push inflation, with an ambiguous net effect on the gap.

Judgement. Supply-side policies are more appropriate as the primary tool because they attack the root cause — the productivity-driven wage gap — and uniquely deliver growth and equity simultaneously, which pure redistribution cannot. But they are slow, costly and contingent on worker buy-in, and they do nothing for those who cannot retrain or who are already out of work. Demand-management measures are therefore a necessary complement: redistribution and transfers cushion the vulnerable in the short run while supply-side reform works through in the long run. The defensible position is not that one class of policy is superior outright, but that inclusive growth in Singapore requires a sequenced mix — supply-side measures leading to raise productivity and close the wage gap, with demand-management measures supporting those the upskilling drive cannot reach — with the balance tilted toward supply-side policy given Singapore’s small multiplier and its overriding need to sustain non-inflationary growth.