The Labour Market

Economics· 1.2.5· 18 min read

1. Factors Affecting Labour Demand and Supply★★☆☆☆⏱ 4 min

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📘 Definition

Derived Demand

Demand for a factor of production that arises from demand for the final good or service it produces

Example:

Demand for construction workers is derived from demand for new housing

Labour demand ( $D_{L}$ ) is determined by three core factors per the specification:

Demand for the final product: If consumer demand for a good rises, firms hire more workers to increase output
Availability of substitutes: If machines can replace workers at lower cost, firms reduce labour demand
Workforce productivity: More productive workers generate higher revenue, so demand for them increases

Labour supply ( $S_{L}$ ) is determined by the following factors:

Population size, age distribution, and migration: Larger working-age populations increase available labour
Institutional rules: School-leaving age, retirement age, and female labour force participation rates
Worker mobility: Geographical (ability to move location for work) and occupational (ability to switch job roles)
Skills and qualifications: Higher required qualifications reduce the pool of eligible workers for a role

📐 Worked Example

A UK coffee shop chain sees a 40% rise in demand for iced lattes, and new low-cost coffee machines that make 10 drinks per minute are released. Explain the net effect on the chain's demand for baristas.

1
First, the rise in demand for iced lattes (the final product) increases the derived demand for baristas, ceteris paribus.
2
Second, the new low-cost coffee machines are a substitute for barista labour, reducing demand for workers.
3
The net effect depends on which factor is larger: if the demand increase for drinks outweighs the substitution effect, demand for baristas rises, otherwise it falls.

Exam tip:

Always reference the derived demand nature of labour first when explaining labour demand factors to earn full marks.

2. Labour Quality, Human Capital and Business Impacts★★☆☆☆⏱ 3 min

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📘 Definition

Human Capital

The skills, knowledge, and experience of workers that increase their productive capacity

Example:

A programmer with a master's degree in software engineering has higher human capital than an entry-level trainee

The quantity and quality of labour are critical for business performance: more workers allow firms to increase output, while higher quality labour reduces error rates, increases productivity, and lowers training costs for firms. Education and training are the main drivers of improvements in human capital: formal education builds foundational skills, while on-the-job training builds role-specific expertise that directly increases worker output.

📐 Worked Example

A logistics firm funds a 6-week training course for all its delivery drivers on fuel-efficient driving and route planning. Explain how this impacts the quality of the firm's labour force.

1
The training increases the human capital of the drivers, as they gain new skills that improve their productivity.
2
Fuel-efficient driving reduces the firm's fuel costs, while route planning reduces delivery times, allowing the firm to complete more deliveries per day with the same number of workers.
3
This increases the overall quality of the firm's labour force, leading to higher profitability.

3. Labour Market Equilibrium Diagrams★★★☆☆⏱ 4 min

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The standard labour market diagram required for your exam uses two axes: the vertical axis shows the wage rate (pay per worker per time period), and the horizontal axis shows the quantity of labour (number of workers employed). The demand for labour ( $D_{L}$ ) curve slopes downward: as wages fall, firms hire more workers because labour costs are lower. The supply of labour ( $S_{L}$ ) curve slopes upward: as wages rise, more workers are willing to take the job because the reward for working is higher. Equilibrium occurs where $D_{L}$ and $S_{L}$ intersect, giving the equilibrium wage ( $W_{e}$ ) and equilibrium employment level ( $Q_{e}$ ).

📐 Worked Example

Draw a fully labelled labour market diagram, and identify the equilibrium wage and employment level.

1
1. Label the vertical axis Wage Rate (W) and horizontal axis Quantity of Labour (Q).
2
1. Draw a downward-sloping line labelled $D_{L}$ (demand for labour) and upward-sloping line labelled $S_{L}$ (supply of labour).
3
1. Mark the intersection of $D_{L}$ and $S_{L}$ as point E. Draw a horizontal line from E to the vertical axis, label this $W_{e}$ (equilibrium wage). Draw a vertical line from E to the horizontal axis, label this $Q_{e}$ (equilibrium employment).

Exam tip:

Always label all axes, curves, and equilibrium points clearly: you lose 1 mark per missing label in exam diagram questions.

4. Analysing Shifts in Labour Demand and Supply★★★★☆⏱ 3 min

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Shifts in the $D_{L}$ or $S_{L}$ curve lead to changes in the equilibrium wage and employment level. A rightward shift in $D_{L}$ (increase in labour demand) leads to higher wages and higher employment, while a leftward shift in $D_{L}$ leads to lower wages and lower employment. A rightward shift in $S_{L}$ (increase in labour supply) leads to lower wages and higher employment, while a leftward shift in $S_{L}$ leads to higher wages and lower employment.

📐 Worked Example

A large number of skilled nurses migrate to the UK from the EU. Analyse the impact on the equilibrium wage and employment level for nurses in the UK.

1
Migration of skilled nurses increases the supply of labour in the UK nursing market, shifting the $S_{L}$ curve to the right from $S_{L 1}$ to $S_{L 2}$ .
2
The new intersection of $D_{L}$ and $S_{L 2}$ gives a new equilibrium wage $W_{2}$ which is lower than the original $W_{e}$ , and a new equilibrium employment $Q_{2}$ which is higher than the original $Q_{e}$ .
3
This means more nurses are employed in the UK, but average wages for nurses fall, ceteris paribus.

5. Trade Union Impacts on the Labour Market★★★★☆⏱ 4 min

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📘 Definition

Trade Union

An organisation of workers that negotiates with employers on behalf of its members to improve wages, working conditions, and job security

Trade unions use collective bargaining to negotiate wages above the market equilibrium wage, as well as improve working conditions such as safer workplaces, shorter working hours, and better holiday pay. When a union negotiates a wage $W_{t}$ that is higher than $W_{e}$ , the quantity of labour supplied exceeds the quantity of labour demanded at that wage, leading to excess supply (unemployment) in that labour market. The overall impact of trade union activity depends on the size of the wage increase and the elasticity of $D_{L}$ : if $D_{L}$ is inelastic (firms cannot easily replace workers), the number of job losses will be small, while if $D_{L}$ is elastic, job losses will be large.

📐 Worked Example

A trade union for factory workers negotiates a 15% pay rise above the market equilibrium wage for all its members. Evaluate the impact of this policy on workers and the factory.

1
For workers who keep their jobs, the policy is positive: they earn higher wages and may have better working conditions negotiated alongside the pay rise.
2
For the factory, labour costs increase significantly, which may lead to higher prices for their goods, lower profits, or a reduction in the number of workers they employ. The excess supply of labour at the new higher wage means some workers will lose their jobs.
3
Overall, the policy is beneficial for the majority of workers if the factory can absorb the higher costs without large job cuts, but harmful if it leads to widespread redundancies.

Exam tip:

When evaluating trade union impacts, always consider both the benefits for employed workers and the potential cost of job losses to earn top marks in 12-mark evaluation questions.

6. Common Pitfalls

Wrong move:

Stating labour demand depends only on worker wages, without referencing derived demand.

Why:

Labour demand is derived from demand for the final product, and the specification requires derived demand to be referenced in all labour demand explanations to earn full marks.

Correct move:

Always start labour demand explanations by noting that labour is a derived demand, before explaining other influencing factors.

Wrong move:

Drawing the labour demand curve upward sloping or the supply curve downward sloping.

Why:

The specification requires a standard supply-demand diagram for labour, with downward-sloping demand (higher wages = fewer workers hired) and upward-sloping supply (higher wages = more workers willing to work).

Correct move:

Label axes clearly before drawing curves to avoid mixing up slope directions, and double-check curve labels before finishing your diagram.

Wrong move:

Explaining trade union impacts using monopsony diagrams or marginal revenue product (MRP) theory.

Why:

These are A-level concepts explicitly out of scope for the Edexcel IGCSE Economics specification, and including them will not earn extra marks.

Correct move:

Use the standard supply and demand labour market diagram, show the union wage set above equilibrium, and explain the resulting excess supply (unemployment).

Wrong move:

Confusing occupational and geographical mobility when explaining labour supply factors.

Why:

The specification distinguishes these two types of mobility, and mixing them up loses marks in definition or explanation questions.

Correct move:

Define both terms clearly: geographical mobility = ability to move location for work, occupational mobility = ability to switch job roles.

Wrong move:

Discussing minimum wage policy in detail when analysing labour market interventions.

Why:

Minimum wage is covered in the separate S2_T06 sub-topic, so you only need to cross-reference it, not explain it in this section.

Correct move:

If asked about wage floors, note that minimum wage is a separate government intervention, and focus on trade union negotiated wages for this topic.

7. Quick Reference Cheatsheet

Concept	Key Details	Exam Use Case
Derived Demand	Depends on final product demand; 3 factors: product demand, substitutes, productivity	1-3 mark definition/explanation questions
Labour Supply	Drivers: population/migration, age distribution, institutional rules, mobility, skills	6-mark analyse shift questions
Human Capital	Improved via education/training; increases labour productivity and business profits	4-mark explanation questions
Labour Market Diagram	Axes: Wage rate (y), Quantity of labour (x); $D_{L}$ down, $S_{L}$ up, equilibrium at intersection	6-mark draw and explain questions
Trade Union Impact	Wage above equilibrium = higher pay for employed workers, possible job losses	12-mark evaluate questions

8. Frequently Asked

Why is labour demand described as a derived demand?

Labour demand depends entirely on consumer demand for the final good or service that workers produce. For example, demand for factory workers rises only if demand for the goods the factory makes increases.

What is the difference between occupational and geographical mobility?

Geographical mobility refers to workers’ ability to move location for work, while occupational mobility refers to workers’ ability to switch between different job roles. Both affect the total supply of labour in a market.

What happens when a trade union sets wages above the market equilibrium?

A wage above equilibrium increases the quantity of labour supplied and reduces the quantity of labour demanded, leading to excess supply (unemployment) in that market, while workers who keep their jobs earn higher pay.

Going deeper

specificationEdexcel IGCSE Economics 4EC1 Spec
sub_topicMinimum Wage Policy

What's Next

Now that you have mastered labour market content for Edexcel IGCSE Economics, you are ready to build on your knowledge with related topics. The next core sub-topic covers government intervention in the labour market, including minimum wage policy, which directly uses the equilibrium diagram skills you learned here. You can also revisit basic supply and demand concepts to reinforce your diagram analysis skills, or move to population topics in the macroeconomics unit to deepen your understanding of labour supply drivers. Make sure to practice drawing labour market diagrams and answering past paper evaluate questions on trade union impacts to maximise your exam marks for this topic.