2024 OCR A-Level Economics - H460 模擬試題連答案詳解

Introduction:

Define the national minimum wage (a statutory price floor below which employers cannot legally pay workers) and introduce the two main theoretical frameworks: perfectly competitive and monopsonistic labour markets.

Analysis of a Perfectly Competitive Labour Market:

In a perfectly competitive labour market, firms are wage-takers at the market-clearing wage \(W_e\), where labour demand (Marginal Revenue Product of Labour, \(MRPL\)) equals labour supply (Average Cost of Labour, \(ACL\)).

• If a minimum wage is set at \(W_{min} > W_e\), the wage level rises to \(W_{min}\).
• At this higher wage, the quantity of labour demanded contracts from \(L_e\) to \(L_d\), while the quantity of labour supplied expands to \(L_s\).
• This creates a surplus of labour (unemployment) equal to \(L_s - L_d\). The microeconomic cost includes lost producer and consumer surplus, and potential deadweight loss.

Analysis of a Monopsonistic Labour Market:

A monopsony is a market with a single dominant buyer of labour. Because the monopsonist must raise the wage for all workers to hire an additional worker, the Marginal Cost of Labour (\(MCL\)) lies above the Average Cost of Labour (\(ACL\)).

• Without intervention, the monopsonist maximises profit where \(MCL = MRPL\), paying a wage of \(W_m\) and employing \(L_m\) workers (both below competitive levels).
• If a minimum wage is introduced at \(W_{min}\) (where \(W_m < W_{min} \le W_e\)), the firm's \(MCL\) becomes horizontal at \(W_{min}\) up to the \(ACL\) curve.
• The firm now hires up to the point where this new horizontal \(MCL\) intersects the \(MRPL\) curve. This results in an increase in employment from \(L_m\) to \(L_{min}\) alongside the wage increase, correcting the market failure.

Evaluation & Critical Real-World Factors:

• Elasticity of Demand for Labour: If demand for labour is highly inelastic (e.g., essential public services or highly skilled niches), employment losses in competitive markets will be minimal. If demand is elastic (e.g., low-skilled services easily automated), job losses will be substantial.
• Efficiency Wage Theory: A higher minimum wage can boost worker morale, reduce staff turnover, and increase productivity, which shifts the \(MRPL\) curve outward, mitigating potential job losses.
• Macroeconomic Pass-through: Firms with monopoly power in product markets may pass wage increases onto consumers via higher prices, preserving profit margins but causing cost-push inflation.
• Impact on Incomes and Inequality: While some low-paid workers benefit from higher incomes, those who lose their jobs or face reduced hours suffer.

Conclusion:

A substantial increase in the minimum wage is not universally damaging. In sectors characterised by employer monopsony power (such as retail or social care), it can successfully raise wages without causing job losses. However, in highly competitive sectors, excessive increases risk creating structural unemployment, highlighting the need for careful empirical assessment by policy-makers.

Level 4 (19–25 marks): Strong, balanced economic analysis and evaluation. Demands clear, well-labeled diagrams showing both a perfectly competitive labour market (demonstrating classical unemployment) and a monopsony labour market (showing how a minimum wage can increase both wages and employment). Evaluative points must be well-developed, discussing real-world nuances such as elasticity, productivity, and macroeconomic effects, leading to a reasoned conclusion.

Level 3 (13–18 marks): Accurate analysis of both market structures, but diagrams may contain minor errors or lack integration with the text. Evaluation is present but may be one-sided or lack depth. Clear distinction between competitive and monopsony outcomes is made.

Level 2 (7–12 marks): Shows some understanding of minimum wages and market structures. Analysis may focus heavily on perfect competition while neglecting monopsony, or present diagrams with significant errors. Evaluation is superficial or lacks economic foundation.

Level 1 (1–6 marks): Basic descriptive points about minimum wages and employment without formal theoretical frameworks. No diagrams or analysis of market structures.

Introduction:

Define discretionary fiscal policy (deliberate changes in government spending and taxation to influence aggregate demand) and monetary policy (actions by the central bank involving interest rates, quantitative easing, and credit control). Define a 'deep recession' as a prolonged period of negative economic growth characterized by high unemployment, deflationary pressure, and low business confidence.

Case for Discretionary Fiscal Policy:

• Direct Injection: Unlike monetary policy, which relies on motivating the private sector to borrow and spend, government spending (\(G\)) is a direct component of Aggregate Demand (\(AD = C + I + G + (X-M)\)).
• The Multiplier Effect: In a deep recession, there is significant spare capacity. The multiplier effect (\(1 / (1 - MPC)\)) is likely to be large, as newly employed workers spend their wages, generating further rounds of consumption.
• Targeted Support: Fiscal policy can target specific sectors or regions (e.g., infrastructure investment, unemployment benefits), which quickly reaches individuals with a high marginal propensity to consume (MPC).

Limitations of Monetary Policy in a Deep Recession:

• The Liquidity Trap: At the zero lower bound of nominal interest rates, further cuts are impossible. Quantitative easing (QE) may expand the money supply, but banks may hoard cash rather than lend, and consumers/firms may refuse to borrow due to 'animal spirits' (low confidence).
• Inelastic Demand for Credit: Even if loans are cheap, firms will not invest if they anticipate weak future consumer demand.

Case for Monetary Policy / Weaknesses of Fiscal Policy:

• Time Lags: Fiscal policy suffers from long 'inside lags' (parliamentary debate, project planning), whereas monetary policy decisions can be made instantly by central banks.
• National Debt and Crowding Out: Large fiscal expansions lead to high budget deficits, which can raise national debt and, in some cases, lead to higher bond yields (financial crowding out).
• Political Interference: Fiscal measures are often compromised by political interests, unlike independent monetary policy.

Synthesis & Evaluation:

The effectiveness of each policy depends heavily on the root cause of the recession. If the downturn is a balance-sheet recession (caused by high debt levels, as in 2008), monetary policy is largely ineffective on its own. In this environment, fiscal policy is crucial to prevent a deflationary spiral. However, a coordinated approach (e.g., monetary policy keeping borrowing costs low via QE while the government runs a fiscal expansion) is the most powerful path to recovery.

Level 4 (19–25 marks): Demonstrates excellent knowledge of both discretionary fiscal and monetary policy mechanisms. Uses well-structured AD/AS diagrams showing the impact of demand-side policies when the economy has large spare capacity (Keynesian AS curve is highly recommended). Critically evaluates both policies, contrasting their limitations (e.g., liquidity trap vs. crowding out, time lags). Concludes with a justified, nuanced judgment on which policy is more effective in a 'deep recession'.

Level 3 (13–18 marks): Good comparative analysis of both policy instruments with appropriate diagrams. Contains clear evaluation of at least some limitations of both policies, but the judgment or synthesis may be less developed.

Level 2 (7–12 marks): Explains both fiscal and monetary policy but with limited comparison or focus on the context of a 'deep recession'. Diagrams may be missing or poorly drawn. Evaluation is limited or descriptive.

Level 1 (1–6 marks): Identifies fiscal and/or monetary policies but relies on superficial descriptions with no analytical framework or evaluation.