Home / Edexcel IGCSE / Competition and the Labour Market
Edexcel IGCSE 4EC1 · Section B · Topic 2.3

Competition and the Labour Market

Edexcel IGCSEIGCSE 4EC1Free revision notes

Contents: 9 sections

Competitive markets

A competitive market has many firms selling similar products, with low barriers to entry so new firms can join easily.

Effects on consumers:

Effects on firms: profit margins are small, so firms must keep costs down to survive. Efficient firms prosper, inefficient ones fail.

Monopoly

A monopoly is a market dominated by one firm, strictly a single seller, though in practice any firm with a very large market share has monopoly power.

Barriers to entry keep rivals out:

Disadvantages of monopoly:

Advantages of monopoly, a top answer needs these too:

Governments therefore regulate monopolies rather than always breaking them up: capping prices, setting quality standards, and blocking mergers that would reduce competition too far.

The demand for and supply of labour

Demand for labour comes from employers. It is called derived demand, because firms want workers not for their own sake but for what they produce. If demand for the product falls, demand for the workers falls too.

Diagram walkthrough · 2 minWhere a wage rate actually comes fromJason WelkerLabour demand rebuilt before labour supply is added, because the wage comes from both. Demand for workers slopes downwards because the marginal revenue product falls as employment rises, and MRP is the marginal product of labour multiplied by the price of the good being made. That is the sentence worth learning: a worker is worth what the extra output sells for. Supply is then added and the two together fix the equilibrium wage and the number of workers hired.

What affects demand for labour:

Supply of labour comes from workers. The higher the wage, the more people are willing to do the job.

What affects supply of labour:

Wage determination

The market for labour with the wage on the vertical axis and the number of workers on the horizontal. Demand for labour slopes down and supply slopes up, and the wage settles where they cross.
The market for labour with the wage on the vertical axis and the number of workers on the horizontal. Demand for labour slopes down and supply slopes up, and the wage settles where they cross.OpenStax, Principles of Economics 3e, CC BY 4.0, section 14.1
The equilibrium wage is set where the demand for labour equals the supply of labour, exactly like price in a goods market (1.2).

Why some jobs pay more than others:

ReasonExplanation
Skills and qualificationsLong training limits supply, so wages are high: surgeons, pilots
ProductivityWorkers producing more valuable output are worth more to employers
Danger or unpleasantnessSome jobs must pay more to attract anyone at all
Trade unionsOrganised workers can bargain collectively for higher pay
Government policyA national minimum wage sets a legal floor
DiscriminationSome groups are paid less regardless of their productivity
The general rule: wages are high where demand for labour is high and supply is low. Surgeons are paid well because few people can do the job (low supply) and their work is highly valued (high demand). Cleaners are paid less because almost anyone can do it (high supply).

The national minimum wage is a legal lowest wage. It raises pay for the lowest earners and reduces poverty, but if it is set well above the equilibrium wage, firms may hire fewer workers, cut hours, or raise prices to cover the cost.

Worked example

A large supermarket chain becomes the only supermarket in a small town after its rivals close.

  1. The chain now has monopoly power
  2. shoppers have nowhere else to go
  3. the firm can raise prices without losing many customers
  4. choice falls, and there is less pressure to keep the shop clean, well-stocked or well-staffed.
As the town's main employer, it also has power in the labour market: workers have few alternative employers, so the supermarket can hold wages down.

But there are two sides:

Evaluation. Whether shoppers are better or worse off depends on whether the firm passes its lower costs on as lower prices, or keeps them as profit, and with no competition; it has little reason to pass them on. The government could respond by regulating prices, or by making it easier for new shops to open. Making entry easier is usually better, because the threat of a new competitor keeps prices down without the government having to guess the right price.

Judgement: monopoly power here is likely to harm shoppers and workers in the long run, even though the chain's scale brings genuine advantages. The best remedy is more competition rather than price controls.

Common exam mistakes

Exam technique

For any wage question. Always discuss both demand and supply. "Doctors earn more because they are skilled" is half an answer; "training takes years so few people qualify, meaning supply is low, while their work is highly valued, meaning demand is high" is a full one.

For monopoly, give advantages and disadvantages and then judge which matters more in the case described.

For evaluation, ask whether cost savings are actually passed on to consumers, and whether new firms could realistically enter the market.

Quick revision

Competitive markets: many firms, low barriers
lower prices, more choice, better quality, innovation.
Monopoly: one dominant firm, protected by barriers to entry
higher prices, less choice, less innovation.
What the syllabus asks for on this topicSpecification points

Specification points

  • Competitive markets and monopoly; the effects on price and choice.
  • The demand for and supply of labour; wage determination.

Related Edexcel IGCSE topics

Browse all Edexcel IGCSE revision notes →

Not the topic you were looking for? Describe what you are stuck on in your own words and we will take you to the notes that answer it.