1.2 Business structure – Economic sectors
📚 Objective: Understand why the relative importance of the five economic sectors changes over time and what happens when they shift. Think of the economy as a pizza – the slices (sectors) grow or shrink depending on the toppings (factors) that are popular.
The Five Sectors
| Sector | Main Activities | Typical Workers |
|---|
| Primary | Extraction & harvesting (agriculture, mining, fishing) | Farmers, miners, fishers |
| Secondary | Manufacturing & construction | Factory workers, engineers, builders |
| Tertiary | Services (retail, transport, hospitality) | Retail clerks, drivers, chefs |
| Quaternary | Knowledge & information (IT, R&D, education) | Software developers, researchers, teachers |
| Quinary | High-level decision making (government, NGOs, CEOs) | Politicians, top managers, philanthropists |
Why Do Sectors Shift?
- 🌍 Globalisation: Companies move production to cheaper countries, boosting the tertiary and quaternary sectors in the home economy.
- 💡 Technology: Automation reduces the need for manual labour in secondary sectors and creates new jobs in quaternary sectors.
- 🏙️ Urbanisation: More people move to cities, increasing demand for services (tertiary) and knowledge work (quaternary).
- 🌱 Environmental concerns: Shift from fossil‑fuel extraction (primary) to renewable energy and green tech (secondary & quaternary).
- 📈 Consumer preferences: Demand for customised, high‑value products pushes firms into service‑heavy models.
Consequences of Sectoral Changes
- 📉 Employment patterns: Jobs move from primary/secondary to tertiary/quaternary; requires new skills.
- 📊 GDP composition: The share of each sector in national output changes; e.g., tertiary might rise from 45% to 60% of GDP.
- 🏗️ Infrastructure demands: More transport and digital networks needed for service‑heavy economies.
- 🌐 Regional disparities: Rural areas may suffer from job losses in primary sectors, while urban centres grow.
- 💰 Income distribution: Higher‑skill jobs in quaternary sectors can widen wage gaps.
🔍 Exam Tip: When answering “Explain the reasons for and consequences of the changing relative importance of the economic sectors,” structure your answer with:
- Identify the five sectors.
- Give 2–3 reasons for the shift (use examples like technology, globalisation).
- Explain 2–3 consequences (employment, GDP, skills).
- Use a clear, logical order and link ideas with words such as “therefore,” “consequently,” and “as a result.”
Quick Reference Table – Sector Share Over Time
| Year | Primary | Secondary | Tertiary | Quaternary |
|---|
| 1980 | \$25\%\$ | \$35\%\$ | \$30\%\$ | \$10\%\$ |
| 2020 | \$12\%\$ | \$28\%\$ | \$45\%\$ | \$15\%\$ |
🎯 Remember: The economy is like a living organism – as new “organs” (sectors) grow, the whole body adapts. Focus on the causes (technology, globalisation, consumer demand) and the effects (jobs, GDP, skills) when you study or answer exam questions.