Supply of labour

The supply of labour refers to the number of workers willing and able to work at a given wage rate in a particular market. It is a derived demand, meaning it depends on the demand for the goods and services that labour produces. Understanding labour supply is crucial for analysing wage determination, unemployment, and the effectiveness of government policies like minimum wages or immigration controls. In the OCR A-Level Economics syllabus, this topic sits within the labour market section of microeconomics, linking to market structures, elasticity, and market failure.

Labour supply is influenced by both pecuniary (monetary) and non-pecuniary (non-monetary) factors. The basic model shows an upward-sloping supply curve due to the substitution effect dominating the income effect at lower wages, but at higher wages, the income effect may cause a backward-bending supply curve. Key determinants include wage rates, working conditions, qualifications, preferences for leisure, and demographic factors. The elasticity of labour supply measures responsiveness to wage changes and varies across occupations and time horizons.

This topic is essential for evaluating real-world issues such as the gender pay gap, the impact of trade unions, and the effects of taxes and benefits on work incentives. It also connects to macroeconomic objectives like full employment and economic growth. Mastery of labour supply enables students to critically assess policies like the National Living Wage and Universal Credit, making it a high-value area for exam essays and data response questions.