Production Theory
Senior 4 · Economics
Production Theory
Lesson 1 of 5
30 min
NISR's Labour Force Survey counted 4,773,000 employed people in Rwanda in 2025. The largest group, 1,865,000 people or 39.1%, worked in agriculture, forestry and fishing. Yet in the same year NISR's national accounts show agriculture producing only 20% of GDP, and the average employee in agriculture earned Frw 408 an hour in cash, against Frw 1,100 in services.
A farmer in Nyamagabe does not work less hard than a bank clerk in Kigali. What a worker produces depends on what he or she works with: the land, the tools and machines, the skills, and the way the work is organised. These are the factors of production, and this unit is about how producers combine them.
Definition
Production: the creation of goods and services to satisfy human wants. Production is complete only when the good reaches the consumer, so transporting, storing and selling are production too.
Inputs are the resources used in production; output is the goods and services produced.
Example: a lorry driver who carries Irish potatoes from Musanze to Kigali produces nothing new to touch, but he adds value by putting the potatoes where buyers are.
Production creates utility, the want-satisfying power you met in unit 5, in four forms:
| Form of utility | How it is created | Rwandan example |
|---|---|---|
| Form utility | Changing the shape or nature of materials | Milling maize into flour; turning hides into shoes |
| Place utility | Moving goods to where they are wanted | Trucking potatoes from Musanze to Kigali markets |
| Time utility | Storing goods until they are wanted | Keeping maize in a cooperative store until prices recover |
| Possession utility | Transferring ownership to the person who wants the good | A shopkeeper selling a phone to a customer |
Purposes of production. To satisfy human wants; to earn incomes (wages, rent, interest and profit) for the owners of resources; to create employment; to produce a surplus that can be exchanged or exported to earn foreign currency; and to reduce dependence on imports.
Types. Direct production is producing for one's own use, with no exchange: a family growing beans to eat. Indirect production is producing for exchange through a market, so that the producer can buy what others make. Indirect production depends on specialisation (lesson 2). By scale, production may be subsistence (mainly for the household) or commercial (mainly for sale).
Levels. Production is grouped into three levels, or sectors: primary (extracting and growing natural resources), secondary (manufacturing, processing, construction and utilities) and tertiary (services). In unit 1 you met them as economic activities; here, measure them.
Reading the chart. In NISR's data, "industry" means mining, manufacturing, utilities and construction (16.6% of workers when the Labour Force Survey branches are added up). Agriculture's blue bar is about twice its orange bar: it employs a far larger share of people than its share of output. Industry and services are the other way round. The GDP shares add to 94%; the remaining 6% is taxes on products, which NISR does not assign to a sector.
Worked example 1: output per worker by sector
Using NISR's 2025 figures: GDP was Frw 23,387 billion, agriculture produced 20% of it, and agriculture employed 1,865,000 of the 4,773,000 employed people.
(a) Average output per employed person, whole economy:
(b) Agriculture:
(c) Comparison: . Output per worker in agriculture is about half the average. A quicker route gives the same answer: .
(d) Caution: this is a rough measure. The Labour Force Survey does not count people who farm only to feed their own households as employed, but their output is part of GDP, so the true gap is wider still. The lesson for production theory: the same labour produces more when it works with more capital, better land and better organisation.
| Factor | Meaning | Main characteristics | Reward |
|---|---|---|---|
| Land | All natural resources: soil, minerals, water, forests, fish, the methane gas in Lake Kivu | A free gift of nature; fixed in total supply; geographically immobile; varies in fertility and location; subject to diminishing returns | Rent |
| Labour | Human effort, physical and mental, used in production | Cannot be separated from the worker; perishable (an idle day is lost for ever); supply depends on population, age structure and wages; can be trained | Wages and salaries |
| Capital | Man-made goods used to produce other goods: tools, machines, buildings, roads, stocks of inputs | Produced by people; wears out (depreciates); raises the productivity of labour; created by saving and investment | Interest |
| Entrepreneurship | The ability to start and organise production by combining the other factors, and to bear its risks | Makes the key decisions; bears uncertainty that cannot be insured; innovates | Profit (a residual, which can be a loss) |
Kinds of capital. Fixed capital is used again and again (a pulping machine at a coffee washing station); working or circulating capital is used up in one round of production (the coffee cherries, fuel). Social capital (social overhead capital) is owned by the community: roads, schools, hospitals. Adding to the stock of capital is called capital formation (investment); it requires saving, because resources must be taken from consumption today.
Efficiency of labour (output per worker per hour) depends on: education and training; health and nutrition; the quantity and quality of capital per worker; working conditions and wages, which affect effort; the quality of management; and the climate and natural resources the worker uses.
Mobility of factors. A factor is geographically mobile if it can move from place to place, and occupationally mobile if it can move from one use to another. Land is geographically immobile, though occupationally mobile (a field can switch from beans to maize). Labour moves only with difficulty: family ties, the cost of housing in towns, and the need for new skills all hold it back. Much capital is mobile (lorries, laptops), but specialised capital is not (a tea factory cannot become a hospital). Entrepreneurship is the most mobile factor.
Worked example 2: naming the factors in a real business
A coffee cooperative in Huye owns a washing station on a hillside by a stream. It employs seasonal workers to sort cherries, runs a pulping machine, buys cherries from members, and its manager decides to borrow to buy a second machine. Classify each input and its reward.
| Input | Factor | Reward |
|---|---|---|
| The hillside plot and the stream water | Land | Rent (paid or implicit) |
| Seasonal sorters | Labour | Wages |
| Pulping machine, buildings | Fixed capital | Interest (on the funds tied up in them) |
| Cherries bought from members | Working capital | Interest |
| The manager's decision to borrow and expand | Entrepreneurship | Profit, if the gamble pays |
Note: the loan itself is money (financial capital). It becomes a factor of production only when it is spent on the machine.
Warning
"Capital" does not mean money. In economics, capital is man-made means of production. A bank balance is a claim on resources, not a resource. And "land" includes everything nature provides, not just soil: the fish in Lake Kivu and the tin ore at Rutongo are land.
Tip
Four utilities, four questions: Did it change form? Did it move place? Was it kept for a better time? Did it change possession? If yes to any, production happened.
Important
Discuss. Some economists treat entrepreneurship as a special kind of labour, not a separate factor. Using the role of a cooperative manager, argue for and against treating it separately.
Federal Reserve Bank of St. Louis, "Factors of Production | Economics Explained". Watch for the four factors and the payment each one earns, then check them against the table above.
Practice
Key points
Sources and credits
Written by Ganzaa: the text, the bar chart (drawn to scale from the NISR figures), the tables, the worked examples and the practice items. The Huye cooperative in worked example 2 is illustrative.
This lesson adapts CC BY-SA material and is shared under CC BY-SA 4.0.
Quick check
A trader buys tomatoes in Musanze and sells them, unchanged, in Kigali. What kind of utility has she mainly created?
