Pearson Edexcel International GCSE Economics: Factors of production, sectors and productivity (4EC1) – Revision Notes

These notes condense sections 1.2.1 (Production) and 1.2.2 (Productivity and division of labour) of the Pearson Edexcel International GCSE Economics (4EC1) specification, Issue 3, February 2026. It is a single tier of entry, with the content in Paper 1: Microeconomics and Business Economics. For full explanations and longer worked examples, read the study guide. All figures are invented and illustrative.

Also useful: the practice questions, the earlier production and costs revision notes, the course hub, the checklist and the free diagnostics.

1.2.1 a: Factors of production

Factor	Definition	Example in a small bakery
Land	All natural resources	The site, water, wheat in the ground
Labour	Human effort, mental and physical	Bakers, shop staff
Capital	Man-made goods used to make other goods	Ovens, mixers, delivery van
Enterprise	Organising the factors, deciding, bearing risk	The owner

Capital means equipment, not money. Enterprise is the factor that brings the other three together.

1.2.1 b: Sectors

Sector	Activity	Examples
Primary	Extracting or growing natural resources	Farming, fishing, mining
Secondary	Making and building	Manufacturing, construction
Tertiary	Services	Retail, banking, education, transport

Classify by the activity carried out, not by the firm’s name.

1.2.1 c: Changing importance of sectors

	Developing economy (typical)	Developed economy (typical)
Primary	Large share of jobs, falling as the economy grows	Small share of both jobs and output
Secondary	Share rises during industrialisation	Share often falls over time
Tertiary	Grows as incomes rise	Largest share of jobs and output

Reasons to learn:

• Primary share falls in a developing economy: farm machinery and better seeds need fewer workers, and as incomes rise people spend a smaller share on food and more on manufactured goods and services.
• Secondary share falls in a developed economy: capital replaces labour, so output can rise while jobs fall, and some goods are imported from lower-cost producers.
• Tertiary share rises: higher incomes increase demand for services such as healthcare, education and leisure.

Qualify with “typically”. Resource-rich economies may keep a large primary output share.

Method: reading sector data

1. Number employed = share x total employment for that year.
2. Percentage change in jobs = (new - old) / old x 100.
3. Change in a share = new share - old share, in percentage points.
4. Relative productivity (a handy comparison) = output share / employment share.

Reminder: Country D employs 10 million people, 30% in services in Year 1 and 45% in Year 2 when the total is 12 million. Services jobs: 3.0 million to 5.4 million, a rise of 80%, although the share rose by only 15 percentage points.

1.2.2 a: Productivity

Productivity = output / number of units of input (for labour: output per worker, or per hour).

Measure	Formula
Labour productivity	total output / number of workers
Land productivity (yield)	output / hectares
Percentage change	(new - old) / old x 100

Reminder: a firm with 8 workers makes 960 units, so productivity is 120. With 10 workers it makes 1,150, so productivity is 115. Output rose 19.8%, yet productivity fell by 4.2%: (115 - 120) / 120 x 100 = -4.17%.

1.2.2 b: What affects productivity

Factor	Ways to raise productivity	Cost or limit
Land	Fertiliser, drainage, irrigation, reclamation	Expense; pollution from run-off; reclaimed land may be poor quality
Labour	Education and training (human capital); skilled migrants	Time and cost of training; trained staff may leave; migrants may start with low output
Capital	More machines per worker; new technology	Purchase price; operators need training; may reduce jobs

Reminder on land: 50 hectares produce 200 tonnes, a yield of 4.0 tonnes per hectare. After drainage, 230 tonnes: 4.6 tonnes per hectare, a rise of 15%.

Key distinctions:

• Quality vs quantity of labour: training raises quality (productivity); hiring raises quantity (production).
• Reclamation vs irrigation: reclamation adds more land; irrigation raises output per hectare of existing land.
• Quantity of capital vs technology: more machines of the same type versus better machines.
• Migration in and out: skilled immigration raises the receiving country’s average; emigration of skilled workers lowers the average in the country they leave.

1.2.2 c and d: Division of labour

Definition: splitting production into separate tasks, each done by a different worker or group.

Method for explaining benefits (a chain): tasks split, so workers repeat one task, so skill builds and switching time falls, so output per worker rises, so unit cost falls.

	Advantages	Disadvantages
Workers	Learn a task quickly; skill grows; higher pay is possible if the firm does well	Boredom; narrow skills; harder to change job; low motivation
Businesses	Higher output per worker; lower unit cost; consistent quality; quick training	Low morale causes absence and turnover; production halts if a worker is missing; inflexible; errors pass along the line

Reminder with numbers: a workshop of 3 workers (120 hours in total) makes whole shirts at 3 hours each, so 40 shirts. If the work is divided so that labour time per shirt falls to 2 hours, output is 60 shirts, up 50%. With a weekly wage bill of USD 360, labour cost per shirt falls from USD 9.00 to USD 6.00.

Evaluation points: standardised products suit division of labour; made-to-order products do not. The market must be big enough to sell extra output. Job rotation, team working and better pay can limit boredom.

Sketch: shares of employment over time

Share of jobs
 |  P                              T
 |    P                         T
 |      P        S----S      T
 |         P  S              S
 |            T        (S may fall in a developed economy)
 +----------------------------------------> Time
 P = primary falls; S = secondary rises then often falls; T = tertiary rises

Describe it in words in the exam: the primary line slopes down, the tertiary line slopes up, and the secondary line rises first and may turn down later.

Evaluation chains to learn

• Training: more training, so higher skill, so more output per hour; but it costs money and time, and trained workers may leave. Judgement: worthwhile when staff stay long enough to repay the cost.
• Machines: more or better capital, so more output per worker, so lower unit cost; but high purchase price, operators need training and some jobs may go. Judgement: depends on the volume sold.
• Migration: skilled arrivals raise average quality and fill shortages; unskilled or untrained arrivals can lower the average at first. Example: 80 workers at 40 units each plus 20 migrants at 30 units gives an average of 38. Total output still rises.
• Falling share of a sector: a fall in a sector’s share of jobs does not prove its output has fallen. Output can rise while jobs fall if productivity rises faster.

Quick self-test

1. Name the four factors of production.
2. Classify as primary, secondary or tertiary: an oil well, a car assembly line, a hairdresser.
3. Define productivity.
4. Eight workers make 960 units a week. Calculate output per worker.
5. The firm hires 2 more workers and output rises to 1,150 units. Calculate the new output per worker and the percentage change in productivity.
6. In Country D, services employ 30% of 10 million workers in Year 1 and 45% of 12 million in Year 2. How many more people work in services, and by what percentage did services jobs rise?
7. State two ways of raising the productivity of labour.
8. Name the four ways of raising land productivity in the specification.
9. Define division of labour.
10. A machine lifts output per worker from 40 to 52 units. Calculate the percentage rise.

Answers

1. Land, labour, capital, enterprise.
2. Primary, secondary, tertiary.
3. Output per unit of input (such as per worker) in a given time.
4. 960 / 8 = 120 units.
5. 1,150 / 10 = 115 units; (115 - 120) / 120 x 100 = -4.17%, a fall of about 4.2%.
6. 3.0 million to 5.4 million: 2.4 million more. 2.4 / 3.0 x 100 = 80%.
7. For example: education and training; skilled migration; better equipment.
8. Fertiliser, drainage, irrigation and reclamation.
9. Splitting production into separate tasks, each done by a different worker or group.
10. (52 - 40) / 40 x 100 = 30%.

Where marks are usually lost

• Writing that more output means higher productivity, without dividing by inputs.
• Calling money or savings “capital” instead of man-made productive goods.
• Giving percentage points when a percentage change was asked, or the reverse.
• Naming a factor without saying how it works, such as “irrigation” with no link to yield.
• Treating division of labour as all gain, or all loss, without a judgement.
• Describing a change in sector shares without using the figures given.
• Stating that the sector pattern is identical in every country.
• Placing a firm in the wrong sector, such as calling a factory tertiary.

Official syllabus

Pearson Edexcel International GCSE in Economics (4EC1) specification, Issue 3, February 2026, sections 1.2.1 and 1.2.2, published by Pearson Education Limited.