Supply-side policies are government policies aimed at increasing the productive capacity of the economy by improving the quantity and quality of factors of production.
Meaning (in terms of LRAS)
- Supply-side policy works by shifting the Long-Run Aggregate Supply (LRAS) curve to the right
Analysis
- Improvements in productivity or resources
→ lower costs of production
→ firms can produce more at every price level
→ LRAS increases (rightward shift)
→ economy’s potential output rises
Objectives of Supply-Side Policy
Increase Productivity
- Output per worker increases
Analysis
- More efficient labour
→ lower unit costs
→ higher competitiveness
→ increased exports and growth
Increase Productive Capacity
- Maximum output economy can produce increases
Analysis
- More/better capital, labour, technology
→ LRAS shifts right
→ sustainable economic growth without inflation
Tools of Supply-Side Policy
1. Education and Training
- Improves skills and human capital
Analysis
- More skilled workforce
→ higher productivity
→ firms produce more efficiently
→ LRAS increases
→ unemployment may fall (structural unemployment reduced)
2. Infrastructure Development
- Investment in transport, communication, energy
Analysis
- Reduced costs and time for firms
→ improved efficiency
→ increased investment
→ LRAS shifts right
3. Support for Technological Improvement
- R&D subsidies, innovation policies
Analysis
- Better technology
→ higher output with same inputs
→ cost reduction
→ increased competitiveness
→ LRAS increases
4. Tax Incentives
- Lower income tax or corporation tax
Analysis
- Encourages work and investment
→ higher labour supply and capital formation
→ increased productive capacity
5. Deregulation and Privatisation
- Reduce government control
Analysis
- Increased competition
→ firms become more efficient
→ innovation increases
→ LRAS shifts right
AD/AS Analysis of Supply-Side Policy
Impact on Real Output (GDP)
- LRAS shifts right
→ economy can produce more
→ real output increases
Impact on Price Level
Analysis
- Increased productive capacity
→ lower costs of production
→ downward pressure on prices
→ inflation decreases (or is controlled)
Impact on Employment
Analysis
- Higher output
→ greater demand for labour
→ employment increases - Training policies
→ reduce structural unemployment
Impact on National Income
Analysis
- Increased efficiency and output
→ higher incomes
→ economic growth improves
Evaluation
Strengths
Non-inflationary Growth
- LRAS increases alongside AD
→ economy grows without inflation
Improves Competitiveness
- Lower costs
→ exports increase
→ improves balance of payments
Long-Term Benefits
- Sustainable economic growth
→ higher living standards
Limitations
Time Lags
- Education and infrastructure take years
→ slow impact
High Cost
- Government spending required
→ may increase budget deficit
Uncertain Effectiveness
- Tax cuts may not lead to higher productivity
→ depends on response of workers and firms
Inequality
- Some policies (e.g. tax cuts)
→ may benefit higher-income groups more
Final Summary
- Supply-side policy = policies to increase LRAS
- Objectives:
- ↑ productivity
- ↑ productive capacity
- Tools:
- Education/training
- Infrastructure
- Technology support
- Tax incentives
- Deregulation
- Effects:
- ↑ real output
- ↓ inflationary pressure
- ↑ employment
- Key strength:
- Enables sustainable, non-inflationary growth
- Key weakness:
- Slow and costly to implement