Labor Market

When there is large-scale involuntary unemployment, it means that there are more people willing to work at the existing wage rate than there are jobs available. In such a case, the labour supply curve becomes perfectly elastic. This is because, at the existing wage rate, people are willing to supply any amount of labour, but there is not enough demand for it. A horizontal labour supply curve indicates that changes in the wage rate do not affect the quantity of labour supplied. This is the case in an economy with involuntary unemployment, where the wage rate does not change to clear the labour market.
- (A) Horizontal: Correct. With involuntary unemployment, the labour supply curve becomes horizontal, indicating that people are willing to work at the existing wage rate but there are not enough jobs available.
- (B) Vertical: This would indicate that the quantity of labour supplied is fixed regardless of the wage rate, which is not the case in involuntary unemployment.
- (C) Positively sloped: A positively sloped labour supply curve would suggest that as wages increase, the quantity of labour supplied also increases, but this does not apply in the case of involuntary unemployment.
- (D) Negatively sloped: A negatively sloped labour supply curve implies that as wages increase, the quantity of labour supplied decreases, which is not the case in involuntary unemployment.
The correct answer is (A), as the labour supply curve becomes horizontal in the case of large-scale involuntary unemployment.

Final Answer: (A) Horizontal.

Monetarist theory, particularly as espoused by Milton Friedman, emphasizes that the natural rate of unemployment and the level of output in the economy are determined by real factors such as capital stock, the size of the labor force, and the level of technology. According to monetarists, these factors influence the economy's productive capacity in the long run. Monetarists argue that aggregate demand does not affect the long-run natural rate of unemployment or output. Instead, it affects the economy in the short run by influencing inflation and economic cycles, but in the long run, the economy gravitates towards its natural rate determined by real factors.

- (A) Capital Stock: Capital stock is a key determinant in the natural rate of output and unemployment, as it defines the productive capacity of the economy.
- (B) Size of labour force: The size of the labor force also determines the natural level of output and unemployment, as a larger labor force typically leads to higher output.
- (C) Level of technology: The level of technology is critical for determining the efficiency of production and therefore impacts the natural rate of output and unemployment.
- (D) Aggregate demand: According to monetarists, aggregate demand affects short-term fluctuations in output and employment, but not the long-run natural rate. Therefore, it does not determine the natural rate of unemployment or output.
The correct answer is (D), as aggregate demand does not determine the natural rate of unemployment or output according to monetarist theory.

Final Answer: (D) Aggregate demand.