Pearson Edexcel IGCSE Economics: Business Competition, the Labour Market and Government Intervention (4EC1)

This guide covers sub-topics 1.2.4–1.2.6, the second half of Topic 2 Business Economics, Pearson Edexcel International GCSE Economics (4EC1), Issue 3, February 2026. The Production and Business Costs guide covers the first three sub-topics (1.2.1–1.2.3); this guide completes Topic 2 by moving from how firms produce to how firms compete, how the labour market they operate in works, and how government responds to the problems markets create.

Where this fits in 4EC1

1.2.1–1.2.3 established the factors of production, productivity and the cost structure of a firm, including how average costs change with scale. 1.2.4–1.2.6 build directly on that: business competition (1.2.4) asks what happens when firms of different sizes compete for the same market, the labour market (1.2.5) treats labour itself as a good bought and sold at a price (the wage), and government intervention (1.2.6) closes Topic 2 by looking at how policy responds to the externalities and labour market outcomes the topic has just described. Topic 2.1 (Government and the Economy) later revisits government policy at the macroeconomic level; 1.2.6 is deliberately narrower, covering only intervention in individual markets and the labour market.

Syllabus coverage

PEARSON EDEXCEL INTERNATIONAL GCSE ECONOMICS (4EC1) — 1.2.4–1.2.6

• 1.2.4 Business competition — the advantages and disadvantages of competition to firms, consumers and the economy; the advantages and disadvantages of large firms and small firms; factors that allow a firm to grow (access to finance, economies of scale, spreading risk, taking over competitors) and reasons some firms stay small (limited market size, a niche market, financing constraints, the owner’s own goals); the definition and features of monopoly (a single dominant firm, a unique product, price-maker status, high barriers to entry) and its advantages and disadvantages for efficiency, choice, quality, innovation, price and scale; the definition and features of oligopoly (a few dominant firms, differentiated products, high barriers to entry, the possibility of collusion, interdependent pricing) and its advantages and disadvantages, including the effect of cartel pricing and price wars
• 1.2.5 The labour market — factors affecting the demand for labour (labour is a derived demand, the availability of substitutes such as capital, and worker productivity) and factors affecting the supply of labour (population size, net migration, the age structure of the population, retirement and school-leaving ages, female participation rates, skills and qualifications, and geographical mobility); the importance of the quantity and quality of labour to a business; how education and training build human capital; using a labour market diagram to show how shifts in labour demand or supply change the equilibrium wage and the level of employment; the role of trade unions in negotiating working conditions and wages
• 1.2.6 Government intervention — policies used to deal with negative and positive externalities (taxation, subsidies, fines, regulation and pollution permits) and the advantages and disadvantages of each; policies to regulate competition, including promoting competition, limiting the power of a monopoly, protecting consumers, and controlling mergers and takeovers; intervention in the labour market through a minimum wage, and the advantages, disadvantages and diagrammatic effect of setting a minimum wage above the market equilibrium

How to approach it

1.2.4’s monopoly-versus-oligopoly material is easiest to hold in memory as two structured comparisons rather than two separate lists: for each market structure, work through the same five headings (efficiency, choice, quality, innovation, price) in the same order. Examiners often ask you to evaluate whether a monopoly is “always bad for consumers” – the strongest answers use higher prices and reduced choice as the case against, and economies of scale or funded innovation (for example in pharmaceuticals) as the case for, before reaching a reasoned judgement.

For 1.2.5, treat the labour market exactly like the product markets in 1.1: the same demand-and-supply diagram tools apply, only the “price” is now the wage and the “quantity” is the number of workers employed. Practising labour-market diagrams where a rise in the school-leaving age shifts the supply curve, or automation shifts the demand curve, transfers the Topic 1 skills you already have into a new context rather than requiring an entirely new diagram type.

1.2.6 rewards precision about which policy targets which problem: taxes, subsidies, fines, regulation and pollution permits address externalities; competition policy and merger controls address monopoly power; the minimum wage addresses labour market outcomes specifically. A common mark loss is using “government intervention” as one undifferentiated policy rather than naming which specific tool solves which specific market failure.

Worked example: minimum wage above equilibrium

A labour market has an equilibrium wage of $10 per hour, at which 120,000 workers are employed. The government sets a minimum wage of $14 per hour.

At $14/hour: quantity of labour supplied  = 150,000 workers
             quantity of labour demanded  = 100,000 workers
             excess supply of labour      = 150,000 - 100,000
                                           = 50,000 workers (unemployment)

The 50,000 excess supply is the diagram’s standard result: a minimum wage set above equilibrium raises pay for those who keep their jobs but creates unemployment among workers who would have been hired at the lower, market-clearing wage. Being able to state both the winners (those still employed, now on higher pay) and the losers (those now unemployed) is what separates a full-mark evaluation from a one-sided description.

Common mistakes

Describing oligopoly and monopoly as if either is simply “one big firm” – oligopoly specifically requires a small number of dominant, mutually aware firms, not a single one. Treating all government intervention as interchangeable, rather than matching taxation/subsidies/regulation to externalities and the minimum wage to the labour market specifically. Forgetting that a rise in the minimum wage does not raise everyone’s pay equally – it only affects workers whose market wage was already below the new minimum. Confusing a shift in the labour supply curve (caused by, for example, migration or the school-leaving age) with a movement along it (caused by a change in the wage itself).

Quick revision checklist

• Compare monopoly and oligopoly using the same five headings each time: efficiency, choice, quality, innovation, price.
• Practise labour-market diagrams for both a demand shift (for example, automation) and a supply shift (for example, migration).
• Match each government policy tool to the specific problem it is meant to solve: externalities, monopoly power, or the labour market.
• Be able to state both a winner and a loser when evaluating a minimum wage set above the equilibrium wage.

Official syllabus

Pearson Edexcel International GCSE Economics (4EC1) specification, Issue 3 — qualifications.pearson.com.