What determines wages and why does labour productivity growth matter?
Explain how wages are determined in the labour market, define and measure labour productivity, and analyse the factors and policies that influence labour productivity growth
WACE Year 12 Economics Unit 4 on the labour market and productivity: how wages are set by labour demand and supply and the industrial relations system, how labour productivity is measured, and the human and physical capital factors that drive productivity growth.
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What this dot point is asking
SCSA wants you to explain wage determination, define and measure labour productivity, and analyse the factors and policies that lift it. Expect a short or extended response linking productivity to growth, inflation and living standards.
How wages are determined
In a competitive labour market, the wage is set where the demand for labour equals the supply.
- Demand for labour is derived from the demand for the goods workers produce; it depends on the productivity of labour and the price of output. It slopes downward against the wage.
- Supply of labour depends on the working-age population, participation, skills and the wage on offer. It slopes upward.
In practice Australia's wages are also shaped by institutions: the award system sets minimum pay and conditions by industry, enterprise bargaining negotiates agreements at the firm level, and the Fair Work Commission sets the national minimum wage each year.
Measuring labour productivity
Productivity growth matters because, over the long run, real wages can only rise sustainably if workers produce more per hour. Without productivity growth, wage rises simply feed into inflation rather than higher living standards.
Factors driving labour productivity growth
- Human capital: the education, training, skills and health of the workforce. A more skilled worker produces more per hour.
- Physical capital: more and better machinery, technology and infrastructure (capital deepening) raises output per worker.
- Technology and innovation: new methods and digital tools, the largest long-run driver.
- Work organisation and management: efficient workplace practices and competition that forces firms to improve.
- Economies of scale as firms grow and spread fixed costs.
Policies to lift productivity
Productivity-raising policy is largely supply-side (microeconomic reform): investment in education and skills, infrastructure, research and development incentives, competition policy, labour market flexibility and tax reform. Australia's productivity growth slowed over the 2010s and into the 2020s, prompting renewed policy attention, because weak productivity growth limits how fast wages and living standards can rise.