Demand for labour in the labour market is a ‘derived demand.’ This means that employees are demanded because there is a demand for the final good or service. (Gillespie, A 2007, 230) In a perfectly competitive labour market, wages for labour is determined by supply and demand for labour, with the wage rate being at the equilibrium level. When the wage rate is higher than the equilibrium, there will be an excess supply of labour as people are attracted to the high pay. This will lead to decreasing wage rates as a result of the excess supply until equilibrium is reached at W1 where quantity supplied equals quantity demanded. The similar theory applies directly opposite when wage rates are below equilibrium levels as shown from the diagram below.
The perfectly competitive labour market means that all employees would be paid the same. Under this model, workers will be attracted to the industry that pays higher wages, thus leaving the industry with lower wages resulting in a decrease in supply of labour. The decrease of supply of labour will then bring up the equilibrium wage in the market. Likewise the increase in supply of labour in the higher paid industry
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