3.5.3 Wage Determination

Edexcel A-Level Economics (9EC0) | Theme 3.5.3

Specification Coverage: Edexcel unit 3.5.3 - Wage Determination. Students should be able to explain wage determination in competitive and monopsony labour markets, analyse the impact of a national minimum wage, explain the role of the elasticities of labour demand and supply, and evaluate labour market issues and related government policies.

Wage Determination in a Competitive Labour Market

In a competitive labour market, there are many firms demanding labour and many workers supplying labour.

Both firms and workers are wage takers, so they accept the market equilibrium wage.

Wage determination diagram
Figure 1: In a competitive labour market, the equilibrium wage (W1) is determined at the intersection of the labour supply (SL) and labour demand (DL) curves, with the equilibrium quantity of labour (Q1) also determined at this point.

Wage Determination in a Monopsony

A monopsony exists when there is a single or dominant buyer of labour.

Wage determination diagram in a monopsony
Figure 2: In a monopsony, the firm faces the entire labour supply curve (SL) and must pay a higher wage to attract more workers. The marginal cost of labour (MCL) lies above the supply curve, leading to a lower wage (Wm) and lower employment (Qm) compared to a competitive market.

The result is that the monopsonist depresses both wages and employment, so \( Wm < Wc \) and \( Qm < Qc \).

Government Intervention: The National Minimum Wage

The national minimum wage (NMW) is a legally enforced price floor set above the market equilibrium wage.

Impact of a national minimum wage diagram
Figure 3: The introduction of a national minimum wage (Wmin) above the equilibrium wage (W1) creates a surplus of labour (unemployment) equal to the difference between the quantity of labour supplied (Qs) and the quantity of labour demanded (Qd).

The minimum wage can raise incomes for low-paid workers, but it may reduce employment if demand for labour is elastic.

Its impact depends on the level of the minimum wage and the PED of demand for labour.

Elasticity of Demand for Labour

The elasticity of demand for labour measures how responsive the quantity of labour demanded is to a change in the wage rate.

Demand for labour is more elastic when:

  • labour is a high proportion of total costs
  • labour can easily be substituted with capital
  • there is a high PED for the final product
  • the time period is longer, allowing firms to reorganise

Elasticity of Supply of Labour

The elasticity of supply of labour measures how responsive the quantity of labour supplied is to a change in the wage rate.

  • Elastic supply: More common for low-skilled jobs with easy entry and exit.
  • Inelastic supply: More common for highly skilled professions that require long training and have high barriers to entry.

Current Labour Market Issues and Policies

Current labour market issues include public sector pay disputes, skills shortages, the cost-of-living crisis, and geographical immobility.

Policies to tackle immobility include:

  • Occupational policies: retraining, apprenticeships, and funding for STEM education
  • Geographical policies: relocation subsidies, regional infrastructure investment, and affordable housing

Exam Preparation

  • Draw, label, and analyse diagrams for a competitive labour market, a monopsony, and the impact of a national minimum wage.
  • Compare wage and employment outcomes in competitive and monopsony markets.
  • Evaluate the impact of the national minimum wage, especially by referring to the PED for labour.
  • Explain the factors that influence both the elasticity of demand for labour and the elasticity of supply of labour.
  • Analyse real labour market issues and evaluate policies aimed at improving mobility.