AQA GCSE Economics: Resource allocation: markets, economic sectors and specialisation (8136)

This guide covers section 3.1.2, Resource allocation, in the AQA GCSE Economics specification (code 8136), which began first teaching in September 2017. It follows the three parts in order: markets (3.1.2.1), the economic sectors (3.1.2.2) and specialisation, with the division of labour and exchange (3.1.2.3). The content belongs to the first paper, How markets work, and the specification has no tiers. Every figure below is invented and illustrative: no real firm, country or statistic is being described.

Use it with the revision notes and the practice questions. The broader guide to Paper 1 and the guide to economic foundations sit alongside this section. For the wider course see the subject hub and the printable checklist. To see where you stand before reading, take the free 10-minute diagnostics.

What you need to understand

Section	What the specification asks you to understand
3.1.2.1 Markets	A market as an opportunity for buyers and sellers to interact and establish price; the role of markets in allocating scarce resources; the difference between factor markets and product markets
3.1.2.2 Sectors	The meaning of primary, secondary and tertiary sectors and their relative sizes in the UK; the difference between a good and a service
3.1.2.3 Specialisation	The meaning of specialisation and the division of labour; how and why individuals and producers specialise; the costs and benefits of the division of labour to the worker and to the firm; the benefits and costs of exchange

3.1.2.1 Markets: allocating scarce resources

A market is an opportunity for buyers and sellers to interact in order to establish a price. It needs no building: a street stall, an online shop and a phone call between a farmer and a wholesaler are all markets.

Resources are scarce, so someone has to decide which goods are made, with which inputs and for whom. In a market, price is the signal that does this. When the price is high, producers learn that buyers want more of the product, and they earn more by supplying it. A low price tells them to produce less. Buyers respond too: a high price discourages purchases by those who value the product least. The price therefore rations a limited supply and steers resources towards the uses that buyers are willing to pay for.

Worked example: a market settling on a price

A street stall in a town sells apples by the kilogram. The weekly plans of buyers and of sellers at each price are invented.

Price per kg	Buyers want (kg)	Sellers offer (kg)	Result
1.00	140	40	Shortage of 100 kg
1.50	110	70	Shortage of 40 kg
2.00	80	80	Plans match
2.50	50	100	Surplus of 50 kg
3.00	20	120	Surplus of 100 kg

At 1.00 buyers queue for stock that is gone. Sellers see this and can raise the price. At 3.00 apples go unsold, so sellers cut the price. Both pressures push towards 2.00, where 80 kg is wanted and 80 kg is offered. Section 3.1.3 covers demand and supply in full; here you only need the idea that interaction between buyers and sellers establishes the price.

A chain of reasoning: how a market reallocates resources

Suppose a poor harvest cuts the supply of apples.

1. Fewer apples are available at each price, so the price rises.
2. Some buyers switch to pears or go without, so the scarce apples go to those who will pay the most.
3. Remaining apple growers earn more per kilogram, and other farmers see the profit and may plant apple trees.
4. Land and labour move towards apples, easing the shortage over time.

Markets do not always work this smoothly: prices can be slow to move, and some people cannot afford what they need. For now, state the mechanism clearly and note that it relies on buyers and sellers responding to price.

Factor markets and product markets

The two types of market sell different things.

	Product market	Factor market
What is bought and sold	Finished goods and services	Factors of production: land, labour, capital, enterprise
Buyers	Households (consumers)	Firms
Sellers	Firms	Households (workers, landowners, savers, entrepreneurs)
The price	Price of the good or service	Reward to the factor: rent, wages, interest, profit
Example	A shopper buys a pair of boots	A boot factory hires a machinist

The same household appears in both. A machinist sells labour in the factor market, receives a wage, then spends it in product markets. The firm does the reverse: it buys labour and sells boots. Money flows round in a loop, and each market depends on the other.

3.1.2.2 Economic sectors

The economy’s output is grouped by the type of activity.

Sector	What happens	Examples
Primary	Taking natural resources from the land or sea	Wheat growing, trawling, quarrying, forestry
Secondary	Making and building: raw materials turned into products	Car assembly, baking, house building, power generation
Tertiary	Providing services	Retail, banking, teaching, healthcare, transport

Classify by what the activity does, not by the firm’s name. A dairy business may span all three: milking cows (primary), turning the milk into cheese (secondary) and delivering the cheese to shops (tertiary).

Relative sizes in the UK

You need to know the pattern for the UK: the tertiary sector is by far the largest, whether you measure by output or by the number of jobs. The secondary sector is considerably smaller, and the primary sector is the smallest of the three. If a question gives you a chart, use its figures, and do not add outside numbers from memory.

Worked example: reading sector data

Country C is fictional. Its total employment grows from 5.0 million to 6.5 million over twenty years.

Share of jobs	Year 1	Year 2	Change in share
Primary	12%	4%	-8 percentage points
Secondary	30%	21%	-9 percentage points
Tertiary	58%	75%	+17 percentage points

Turn shares into numbers of jobs.

Primary:   12% of 5.0m = 0.60m   ->  4% of 6.5m = 0.26m   change -56.7%
Secondary: 30% of 5.0m = 1.50m   -> 21% of 6.5m = 1.365m  change -9.0%
Tertiary:  58% of 5.0m = 2.90m   -> 75% of 6.5m = 4.875m  change +68.1%

Secondary jobs fell by 9 percentage points as a share, but only by 9.0% in number, because the total grew by 30%. A percentage point change describes a share; a percentage change describes a quantity. Mixing these up is a common error.

Goods and services

	Good	Service
Form	Physical, tangible item	Activity done for someone; not a physical item
Examples	Bicycle, loaf, phone	Haircut, bus journey, repair, advice
Storage	Can usually be stored until sold	Cannot be stored; it happens when it is provided
Ownership	The buyer owns the item	The buyer gets the benefit, but nothing is owned afterwards

Some purchases mix both. A restaurant meal includes food (a good), but you pay mainly for cooking and serving (a service); decide what the buyer is mainly paying for and say so. Retail is a tertiary service: the shop sells goods, but its own activity is making them available.

3.1.2.3 Specialisation, division of labour and exchange

Specialisation is when an individual, firm, region or country concentrates on a limited range of tasks or products instead of making everything. The division of labour is a particular form of it: a process is broken into stages, with a different worker assigned to each stage.

How and why individuals and producers specialise

• Individuals choose a skill or job, usually because they are good at it, because training builds their ability and earnings, and because they give up less (a lower opportunity cost) by doing what they do best.
• Producers concentrate on what they can make well and cheaply: because of the resources, skills or equipment they have, or because producing more of one thing lowers the cost of each unit.
• Both do it because specialising raises output from the same resources, and the extra output can be exchanged.

Worked example: why specialising and trading pays

Jo and Sam each work 8 hours. Jo grows 5 kg of vegetables or bakes 1 loaf per hour. Sam grows 2 kg or bakes 2 loaves per hour.

	Jo	Sam	Total
Each splits time 4 hours and 4 hours	20 kg, 4 loaves	8 kg, 8 loaves	28 kg, 12 loaves
Jo grows only, Sam bakes only	40 kg, 0 loaves	0 kg, 16 loaves	40 kg, 16 loaves

Total output rises by 12 kg and 4 loaves. They now exchange: Jo gives Sam 14 kg and receives 6 loaves.

Jo:  40 - 14 = 26 kg and 6 loaves   (before: 20 kg, 4 loaves)
Sam: 14 kg and 16 - 6 = 10 loaves   (before: 8 kg, 8 loaves)

Each ends with 6 kg and 2 loaves more than before. Specialisation creates the extra output and exchange spreads it. Once people specialise, they depend on others for everything they no longer make, so exchange is necessary.

Worked example: the division of labour in a firm

A small jam business has 4 workers on an 8-hour day, paid 360 in total. At first each worker makes whole jars: preparing fruit, boiling, filling and labelling. Each makes 18 jars a day. The owner splits the job into four stations, with one worker per station. Because each worker practises one task and no one wastes time changing between tasks, output rises to 27 jars per worker.

Before: 4 x 18 = 72 jars    Labour cost per jar = 360 / 72  = 5.00
After:  4 x 27 = 108 jars   Labour cost per jar = 360 / 108 = 3.33
Output change = (108 - 72) / 72 = +50%     Cost per jar change = -33.3%

Costs and benefits of the division of labour

	Benefits	Costs
Worker	Skills grow fast through repetition; training is quick; the firm’s higher output may allow higher pay	Repetitive and boring; narrow skills make it harder to find other work; less sense of making a finished product
Firm	Higher output per worker; lower cost per unit; more consistent quality; new staff trained quickly; machines suit simple tasks	Bored workers may be absent or leave; one absence can halt a station; less flexibility; mistakes pass along the line; more supervision

Costs of specialisation and exchange also exist beyond the firm: a region or country that depends on one product is exposed if demand for it falls, and depending on others for supplies is risky if they cannot deliver.

Evaluation: is the division of labour worth it?

A good judgement uses if and depends. The jam business gains if the extra output sells; if demand is weak, it may simply hold surplus stock. The gain lasts if workers stay motivated, so rotating jobs or sharing the benefit through pay can protect it. For a worker, good pay and training can outweigh boredom, but narrow skills matter more if machines could replace the task. State the point, give the reason, then say which side is stronger in the case given.

How answers gain or lose credit

• Link every claim to productivity and cost. “Workers get better at one task, so output per worker rises, so unit costs fall” develops one point; “it is more efficient” does not.
• Always say to whom: the question may ask for the worker or the firm, and a point about the wrong one does not answer the question.
• Quote the data you are given, such as sector shares or output figures.
• Show working for calculations and state units.

Common errors

• Describing a factor market as a market for goods.
• Placing a firm in one sector when it spans several, or putting retail in the secondary sector.
• Treating a fall in a sector’s share as a fall in the number of jobs.
• Giving only the benefits of the division of labour, with no costs or judgement.
• Stating specialisation and the division of labour as identical. The second is one way of doing the first.

Official syllabus

AQA, GCSE Economics (code 8136): sections 3.1.2.1 to 3.1.2.3 of the specification, first teaching September 2017.