Supply-Side Policies (Edexcel A Level Economics A)

Revision Note

Steve Vorster

Written by: Steve Vorster

Reviewed by: Jenna Quinn

Supply-side Policies

  • Supply-side policies aim to shift the long-run aggregate supply (LRAS) 

  • There are two categories of supply-side policies

    • Interventionist and market-based

  • Interventionist supply-side policies require government intervention in order to increase the full employment level of output

    • These are mainly used to correct market failure

  • Market-based supply-side policies aim to remove obstructions in the free market that are holding back improvements to the long-run potential

    • E.g. Setting up a regulator to prevent monopolies forming

Aims of Supply-side Policies

  • Broadly speaking, there are five aims of supply-side policies

    • The overall aim is to increase the quantity/quality of the factors of production


    Market Based and Interventionist Strategies to Meet the Aims of Supply-side Policies

Aim of Supply-side Policy

Market Based Approach

Interventionist Approach

To increase incentives

  • Reducing income/corporation tax rates

  • Restructuring the unemployment benefits system to incentivise the unemployed to seek work

 

To promote competition

  • Privatisation and deregulation

  • Trade liberalisation

  • Increased government spending on innovation

  • Direct support to firms (subsidies) promotes international competitiveness

To reform the labour market

  • Decreasing trade union power so wages can be decreased

  • Decreasing minimum wages to lower costs of production

  • Increased government spending on improving occupational mobility

To improve the skills and quality of the labour force

 

  • Increasing government spending on education and retraining

  • Increasing government spending on healthcare so that productivity improves

To improve infrastructure

 

  • Increased government spending on infrastructure

Examiner Tips and Tricks

MCQ will test your ability to differentiate between market-based and interventionist supply-side policies.

When evaluating supply-side polices in essay responses, demonstrate critical thinking by acknowledging that privatisation has been used for so long that there is little left to privatise and perhaps a better way forward is to improve competition policy and regulation.

Remember, the private sector will also be increasing supply in an economy (it is not only up to the government) as they are incentivised to increase their profits.

Diagrams to Illustrate Supply-side Policies

  • Successful supply-side policies will increase the long-run aggregate supply (LRAS)

    • This equates to an increase in the production possibilities of an economy

  • The successful implementation can be illustrated on either a Classical or Keynesian diagram

2-4-3---changes-to--lras---classical
A Classical diagram that illustrates the implementation of successful supply-side policy
2-6-3-supply-side
A Keynesian diagram that illustrates the implementation of successful supply-side policy

Diagram analysis

  • E.g. Efforts to reduce trade union power have been successful

    • There is now less protection on wage levels

      • Wage levels fall

  • Firms will now hire more workers and the quantity of productive labour in the economy has increased

    • This causes LRAS1 to increase to LRAS 

      • Output increases from YFE to YFE1

      • Average price levels fall from AP1→AP2

Strengths & Weaknesses of Supply-side Policies

Strengths of supply-side policies

  • They increase the rate of growth of an economy

  • They reduce average price levels

  • They reduce unemployment 

  • They often increase the value of net exports

  • Improvements in Infrastructure can raise the quality of life for all citizens

Weaknesses of supply-side policy

  • The distribution of income worsens as labour market reforms and wage policies lower worker's wages

  • They are expensive to implement

  • There are significant time lags between expenditure and seeing the benefits

  • Due to the long-term nature, changes in government often result in changes to budgets and scope of projects

    • The end result may be less effective than it could have been

  • Vested interests can result in less effective outcomes e.g. There are many examples of privatisation occurring in such a way that the government's preferred bidders obtained an asset at a knock down price

    • Often the preferred bidders were not necessarily the most efficient firms

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Steve Vorster

Author: Steve Vorster

Expertise: Economics & Business Subject Lead

Steve has taught A Level, GCSE, IGCSE Business and Economics - as well as IBDP Economics and Business Management. He is an IBDP Examiner and IGCSE textbook author. His students regularly achieve 90-100% in their final exams. Steve has been the Assistant Head of Sixth Form for a school in Devon, and Head of Economics at the world's largest International school in Singapore. He loves to create resources which speed up student learning and are easily accessible by all.

Jenna Quinn

Author: Jenna Quinn

Expertise: Head of New Subjects

Jenna studied at Cardiff University before training to become a science teacher at the University of Bath specialising in Biology (although she loves teaching all three sciences at GCSE level!). Teaching is her passion, and with 10 years experience teaching across a wide range of specifications – from GCSE and A Level Biology in the UK to IGCSE and IB Biology internationally – she knows what is required to pass those Biology exams.