How is the wage rate determined in a perfectly competitive labour market?
In a perfectly competitive labour market, the wage rate is determined at the intersection of the demand and supply curves of labour. At this point, the demand for and supply of labour are balanced.
The demand for labour comes from firms. The market demand curve is downward sloping because, due to the law of diminishing marginal product, firms demand less labour at higher wage rates. A firm hires labour up to the point where the wage rate equals the Value of Marginal Product ().
The supply of labour comes from households. The market supply curve is upward sloping because at higher wage rates, more individuals are attracted to supply labour. The equilibrium wage is established where these market demand and supply curves intersect.
Explanation
The answer is derived directly from the provided text which outlines the basic difference in sources of demand (firms) and supply (households). It incorporates the concept that the market demand curve is downward sloping due to the law of diminishing marginal product and the condition w = VMP_L. It also uses the context regarding the upward sloping nature of the market supply curve to explain the final determination of the wage rate.
Solution Steps
Step 1: Identify the source of demand (firms) and supply (households) in the labour market.
Step 2: Describe the slope of the demand curve (downward sloping due to diminishing marginal product) and the supply curve (upward sloping as higher wages attract more individuals).
Step 3: Conclude that the wage rate is determined at the intersection of these demand and supply curves.