In 1894 New Zealand made history by being the first developed nation to introduce a minimum wage. The Economist had an article on minimum wages and the fact that they might in fact be good for an economy. Most economists believe that a higher minimum wages = the artificial increase in labour costs and therefore lower demand for labour.
Some economists have suggested that minimum wages can increase employment and obviously pay. However if employees have monopsony power as buyers of labour and are able to influence wages they can keep the wages lower below its competitive rate – see graph below.
Two economists (David Carr & Kruegger) found out in New Jersey that when the minimum wage was raised employment in fast-food restaurants actually increased. The Economist suggests that if firms are not reducing the number of their employees with higher minimum wages they must be employing a number of strategies such as raising prices of their goods/services or saving money from reduced revenue. The IMF state that a moderate minimum wage (30-40% of the median wage – see graph) doesn’t have a significant negative effect on employment numbers and may do some good.
Monopsony in the Labour Market
A monopsony occurs in the labour market when there is a single or dominant buyer of labour. The buyer therefore is able to determine the price at which is paid for services. Unlike other examples we have looked at, in this situation we are now dealing with an imperfect rather than a perfectly competitive market. The monopsonist will hire workers where:
Marginal Cost of labour (MCL) = Marginal Revenue product of labour (MRPL)
From the perspective of the monopsonist firm facing the supply curve directly, if at any point it wants to hire more labour, it has to offer a higher wage to encourage more workers to join the market – after all, this is what the ACL curve tells it. However, the firm would then have to pay that higher wage to all its workers so the marginal cost of hiring the extra worker is not just the wage paid to that worker, but the increased wage paid to all workers as well. So the marginal cost of labour curve (MCL) can be added to the diagram.
If the monopsonist firm wants to maximise profit, it will hire labour up to the point where the marginal cost of labour is equal to the marginal revenue product of labour. Therefore it will use labour up to level of Eq which is where MCL=MRPL. In order to entice workers to supply this amount of labour, the firm need pay only the wage Wq. (Remember that ACL is the supply of labour). You can see, therefore, that a profit-maximising monopsonist will use less labour, and pay a lower wage, than a firm operating under perfect competition.
In this situation the power of the employer in the labour market is of overriding importance and the employer can set a low wage because of this buying power.