Pearson Edexcel International GCSE Economics: The labour market and government intervention in business (4EC1)

This guide covers specification sections 1.2.5 (the labour market) and 1.2.6 (government intervention) of the Pearson Edexcel International GCSE Economics (4EC1) specification, Issue 3. Both sections sit in Paper 1, Microeconomics and Business Economics. The course is single tier. Every country, firm and number below is invented and illustrative. Use the revision notes for recall and the practice questions to test yourself. Course pages: hub, checklist and free diagnostics. For supply and demand basics see demand, supply and market equilibrium.

What the specification asks for

Point	What you must be able to do
1.2.5 a)	Explain what affects the demand for labour: derived demand, substitutes (including machines), productivity
1.2.5 b)	Explain what affects the supply of labour: population, migration, age distribution, retirement age, school-leaving age, female participation, skills, mobility
1.2.5 c), d)	Explain why quantity and quality of labour matter to a business; link education and training to human capital
1.2.5 e)	Draw labour market diagrams and show shifts
1.2.5 f)	Explain how trade unions try to improve conditions and raise wages
1.2.6 a), b)	Taxation, subsidies, fines, regulation, pollution permits: how each deals with externalities, with advantages and disadvantages
1.2.6 c)	Competition rules: promote competition, limit monopoly power, protect consumers, control mergers and takeovers
1.2.6 d)	Minimum wage: reasons, advantages, disadvantages, diagrams for introducing and raising it

The demand for labour (1.2.5 a)

Firms hire labour to produce goods and services, so labour demand is a derived demand: it follows from the demand for what the labour makes. If more people want bread, bakeries need more bakers.

Three factors shift demand for labour:

• Demand for the final product. Chain: product demand rises, output rises, the firm hires more workers, so labour demand shifts right.
• Availability of substitutes, including machines. A cheaper or better machine lets firms replace workers, so demand for that labour shifts left. If machines become dearer, demand for workers rises.
• Productivity. Workers who produce more per hour bring in more revenue for each wage paid, so firms want more of them.

Quantity versus demand: a new wage only slides you along the demand curve. The three factors above shift the whole curve.

The supply of labour (1.2.5 b)

Supply of labour is the number of people willing and able to work at each wage.

Factor	Effect on supply in a market	Reason
Population size	Larger, shifts right	More people of working age
Migration	Inward migration shifts right; emigration shifts left	Changes the number of workers available
Age distribution	More people aged 20 to 60 shifts right; an ageing population shifts left	Fewer people of working age
Retirement age	Raised, shifts right	People stay in the labour force longer
School-leaving age	Raised, shifts left (in the short run)	Young people stay in education instead of working
Female participation	Higher, shifts right	More women in paid work, helped by childcare and equal opportunity
Skills and qualifications	More people qualified for a job, shifts right for that job	The pool of suitable workers grows
Ability to move location or type of work	More mobility, shifts right for the jobs where workers are needed	Occupational and geographical mobility fill gaps

Quantity and quality of labour, and human capital (1.2.5 c, d)

• Quantity is how many workers, or hours, a firm can hire. Too few workers and orders go unfilled.
• Quality is how skilled, healthy and motivated the workers are, which determines productivity.

Human capital is the skills, knowledge and health of the workforce. Education and training raise it.

Chain for a firm: training builds skills, output per worker rises, cost per unit falls and quality improves.

Worked example (illustrative). A firm pays 12 an hour. Untrained staff make 20 units an hour; after training they make 26.

• Labour cost per unit before: 12 ÷ 20 = 0.60.
• Labour cost per unit after: 12 ÷ 26 = 0.46 (to 2 decimal places).
• Fall: (0.60 − 0.46) ÷ 0.60 ≈ 23%, so the same wage buys more output.

Quantity against quality. Firm A has 40 workers making 20 units an hour each (800 units). Firm B has 30 workers making 28 each (840 units). Quality can beat quantity.

Costs of training: fees, lost output while staff train, and the risk that trained staff leave for rivals. For the economy, a better educated workforce raises productivity and incomes. See factors of production and productivity.

Labour market diagrams (1.2.5 e)

Axes: wage (vertical), quantity of labour or employment (horizontal). The demand curve for labour slopes down (firms hire fewer workers at a higher wage). The supply curve slopes up (more people offer to work at a higher wage). They cross at the equilibrium wage and equilibrium employment.

Worked example. In the market for cleaning staff in Town T (illustrative), wage is per hour.

Wage	Workers demanded	Workers supplied
6	700	300
8	600	400
10	500	500
12	400	600
14	300	700

Equilibrium wage = 10; equilibrium employment = 500.

Shift in demand. More offices open, so demand rises by 100 workers at every wage. The new equilibrium is a wage of 11 and employment of 550. Wage up 10%, employment up 10%.

Shift in supply. Suppose supply falls by 100 at every wage (for example, many retire). The new equilibrium is a wage of 11 and employment of 450. Wage up 10%, employment down 10%.

Shift	Effect on wage	Effect on employment
Demand right	Rises	Rises
Demand left	Falls	Falls
Supply right	Falls	Rises
Supply left	Rises	Falls

When you draw, label both axes, the curves D and S (and D1 or S1 for a shifted curve) and the old and new equilibrium points.

Trade unions (1.2.5 f)

A trade union is a body of workers who bargain as one group. By collective bargaining it can seek higher wages, better working conditions, shorter hours and job security. A union’s power comes from the threat of industrial action such as a strike.

Using the Town T table: a union bargains a wage of 12. Employment falls to 400 (demand at 12), so 500 − 400 = 100 jobs are lost, while the 400 who keep jobs gain 2 an hour each, 800 an hour in total. The 100 who lose jobs lose out.

Possible benefits	Possible costs
Higher pay and safer conditions for members	Fewer jobs if wage is above equilibrium
Voice for workers, fewer disputes	Higher costs for firms, so higher prices or lower profit
Better pay can raise motivation and productivity	Strikes disrupt output

Government policies for externalities (1.2.6 a, b)

An externality is a spillover cost or benefit felt by third parties. A factory’s pollution is a negative externality, so the market produces too much. Each policy aims to cut output or pollution to the socially best level.

Taxation (illustrative). Chemical market: demand P = 100 − 2Q, supply (private cost) P = 20 + 2Q. Equilibrium Q = 20, P = 60. Pollution costs society 16 per unit, so the true cost is 36 + 2Q and the best output is 16 (price 68). A tax of 16 per unit moves supply up by 16, and the market settles at output 16 and price 68. Revenue = 16 × 16 = 256. Consumers pay 8 more and producers keep 8 less, so each bears 128 of the tax. External cost falls from 20 × 16 = 320 to 256.

• Advantages: raises revenue, makes polluters pay.
• Disadvantages: hard to set at the right level; demand may be inelastic so pollution barely falls; may hurt poor consumers.

Subsidies. For a positive externality the market produces too little, so a subsidy encourages activities with external benefits or cleaner production. Solar-panel market: demand P = 90 − Q, supply P = 30 + Q, equilibrium 30 units at 60. A subsidy of 10 per unit moves supply to 20 + Q. Output rises to 35, buyers pay 55, producers receive 65. Cost to the government = 10 × 35 = 350.

• Advantages: lowers prices, boosts green output.
• Disadvantages: costs taxpayers, firms may depend on it.

Fines. A penalty for breaking a pollution rule. A firm saves 24,000 by dumping waste and has a 30% chance of being caught. A fine of 60,000 has an expected cost of 0.3 × 60,000 = 18,000, which is less than the saving, so it still dumps. A fine of 100,000 gives 30,000, which deters it.

• Advantages: punishes, easy to understand.
• Disadvantages: needs monitoring, only works if caught, harm already done.

Regulation. Laws that limit or ban, such as emission limits or banning a chemical.

• Advantages: certain result, quick for dangerous harms.
• Disadvantages: compliance and enforcement costs; no incentive to cut below the limit; can raise costs.

Pollution permits. The government sets a cap and issues permits that firms can trade. Firm X must cut 20 tonnes and can do so at 40 per tonne, costing 800. Firm Y can cut at 15 per tonne. If permits trade at 25, X buys 20 permits for 500 (saving 300) and Y cuts an extra 20 tonnes at a cost of 300, earning 500 (net gain 200). Total pollution is unchanged but the cost is lower.

• Advantages: certain cap, flexible, rewards cleaner firms.
• Disadvantages: need to set the cap and monitor firms, big firms may buy up permits, may not reduce pollution much if the cap is high.

Regulating competition (1.2.6 c)

Governments use competition rules to:

• Promote competition: remove entry barriers, support small firms, and investigate unfair practices.
• Limit monopoly power: ban cartels and price fixing, fine abuse of dominance, cap prices of natural monopolies or break up large firms.
• Protect consumer interests: laws on safe products, truthful advertising and labelling, fair contracts, and ways to claim refunds.
• Control mergers and takeovers: a regulator investigates mergers that would create a large market share and can block them or set conditions.

Worked example. Four firms have market shares of 35%, 25%, 20% and 20%. The first two propose to merge: 35 + 25 = 60% of the market. The regulator is likely to be concerned, because the larger firm could raise price. If price rises from 8 to 10, that is a 25% rise and, on 50,000 units, consumers pay an extra 2 × 50,000 = 100,000.

Evaluation: rules cost money to enforce, and a merger may bring economies of scale and lower costs.

Minimum wage (1.2.6 d)

A minimum wage is a legal wage floor.

Reasons: reduce poverty and inequality, stop exploitation of low-paid workers, and make work pay more than benefits.

Worked example (Town T). A minimum of 12 is above the equilibrium of 10, so it is binding. Demand = 400, supply = 600, so there is a surplus of labour of 200 (unemployment). Employment falls by 100 (20%). The wage bill changes from 10 × 500 = 5,000 to 12 × 400 = 4,800. If it is raised to 13, demand is 350, supply is 650 and the surplus is 300. A minimum of 9 would have no effect (below equilibrium).

Introducing: draw a horizontal line above equilibrium, find demand and supply at that wage, and mark the gap. Increasing: move the line up and the gap widens.

Advantages	Disadvantages
Higher pay for those in work	Unemployment if set above equilibrium
Reduces poverty and inequality	Higher costs for firms, so higher prices or job cuts
Boosts motivation and spending	Informal work, hard to enforce
Reduces reliance on benefits	May not help poor households with no earner

Small business example. A bakery has 6 staff working 35 hours for 50 weeks, which is 10,500 hours. A rise from 9.00 to 10.50 is 16.7%, adding 1.50 × 10,500 = 15,750 to the wage bill (from 94,500 to 110,250).

Common errors

• Shifting the demand curve when only the wage changes.
• Saying a minimum wage always causes unemployment: it depends where it is set.
• Forgetting that fines and regulation need enforcement.
• Drawing diagrams without labelled axes.

Official syllabus

Pearson Edexcel International GCSE in Economics (4EC1) specification, Issue 3, February 2026, for first teaching September 2017, published by Pearson Education Limited: sections 1.2.5 The labour market and 1.2.6 Government intervention.