If a firm faces a shortage of workers with very specific skills, it may decide to undertake the necessary training itself. If on the other hand it faces a shortage of unskilled workers it may well offer a small wage increase in order to obtain the extra labour. In the first case it is responding to an increase in demand for labour by attempting to shift the supply curve. In the second case it is merely allowing a movement along the supply curve. Use a demand and supply diagram to illustrate each case. Given that elasticity of supply is different in each case, do you think that these are the best policies for the firm to follow? What would happen to wages and economic rent if it used the second policy in the first case?