11.11 - Economic Structure
Changes in economic structure as countries develop
As economies grow and develop, the distribution of labour and output across different sectors shifts significantly. In less developed countries, a large portion of the workforce is involved in basic resource extraction and farming, but this changes as income levels rise and technology advances.
Patterns of sectoral shifts during development
- Primary sector dominance in low-income countries - Most workers are employed in agriculture or mining, with the economy heavily reliant on these activities for income and employment.
- Rise of secondary sector - As development progresses, manufacturing and construction become key employers, driving industrial growth and job creation.
- Tertiary sector dominance in high-income countries - Services such as finance, education, and healthcare take over as the main focus, employing the majority of the workforce.
- Direct transitions - Some economies move straight from primary to tertiary sectors, often through rapid expansion in areas like tourism, bypassing a strong manufacturing phase.
- Evolving role of primary sector - In advanced economies, fewer people work in primary industries, but output value increases due to better technology, higher worker skills, and more efficient use of machinery.
Definitions of economic sectors
Economic activities are grouped into three main sectors based on the type of production and output. These categories help analyse how economies are structured and how they evolve over time.
The three main economic sectors
- Primary sector - Involves extracting raw materials from the earth, including agriculture (farming and fishing) and extractive industries like oil drilling, gold mining, and coal extraction.
- Secondary sector - Focuses on transforming raw materials into finished goods, covering all manufacturing industries (such as car production or textile making) and the construction industry (building homes and infrastructure).
- Tertiary sector - Provides services rather than physical goods, encompassing areas like banking, education, healthcare, and tourism.
Vulnerabilities of primary sector dependency
Relying heavily on the primary sector exposes economies to various risks, particularly in less developed countries where this sector forms the backbone of employment and exports. These vulnerabilities can lead to instability and hinder long-term growth.
Risks associated with primary sector reliance
- Exposure to natural forces - Events like droughts can cause crop failures, leading to food shortages in subsistence-based systems or reduced export earnings in trade-focused economies.
- Price fluctuations in primary markets - Supply and demand for commodities like food or minerals can vary wildly due to weather, global events, or changing consumer needs, causing unstable revenues.
- Income inelastic demand for primary products - Demand for basics like food rises little as global incomes grow, limiting market expansion for primary exporters.
- Narrow economic base - Many low-income countries depend on a limited range of primary exports, such as one crop making up more than a quarter of total export income, increasing overall fragility.
Export patterns and terms of trade in developing and developed economies
Export composition differs markedly between low- and high-income countries, influencing trade balances and economic stability. Over time, these patterns affect the relative prices of goods traded internationally.
Income elasticity and terms of trade
- Income elastic demand for manufactured goods - As global incomes rise, demand for these items increases more than proportionally, benefiting exporters of secondary sector products.
- Deteriorating terms of trade for primary exporters - Over time, primary goods often become cheaper relative to manufactured items, reducing the purchasing power of countries dependent on commodity exports.
- Benefits for developed economies - Exporting a wide array of manufactured and service-based products provides resilience against market volatility and supports sustained economic growth.