Kaiser's Ice Cream Parlor hires workers to produce milk...

Kaiser's Ice Cream Parlor hires workers to produce milk shakes. The market for milk shakes is perfectly competitive, and the price of a milk shake is $\$ 4 .$ The labor market is competitive, and the wage rate is $\$ 40$ a day. The table shows the workers' total product schedule. Kaiser's installs a new machine for making milk shakes that increases the productivity of workers by 50 percent. If the price of a milk shake remains at $\$ 4$ and the wage rises to $\$ 48$ a day, how many workers does Kaiser's hire?

Kaiser's Ice Cream Parlor hires workers to produce milk shakes. The market for milk shakes is perfectly competitive, and the price of a milk shake is $\$ 4 .$ The labor market is competitive, and the wage rate is $\$ 40$ a day. The table shows the workers' total product schedule.
Kaiser's installs a new machine for making milk shakes that increases the productivity of workers by 50 percent. If the price of a milk shake remains at $\$ 4$ and the wage rises to $\$ 48$ a day, how many workers does Kaiser's hire?

Key Concepts

Perfect Competition

In the context of both the product and labor markets, perfect competition implies that individual firms are price takers with no control over the market price. In competitive product markets, the firm accepts the prevailing market price for its output, while in competitive labor markets, it takes the wage rate as given. These assumptions allow for straightforward analyses of supply, demand, and optimal resource allocation.

Marginal Product of Labor

This concept refers to the additional output generated by employing an extra unit of labor while keeping all other factors constant. It is central to understanding how changes in workforce size affect production levels and to making decisions about hiring workers based on their incremental contribution to output.

Marginal Revenue Product

Marginal Revenue Product (MRP) is the additional revenue that a firm earns from employing one more unit of labor. It is calculated as the product of the marginal product of labor and the price of the output. Firms use this metric to determine the profitability of hiring additional workers, aiming to hire until MRP equals the wage rate.

Optimal Hiring Decision

The optimal hiring decision involves employing workers up to the point where the marginal revenue product of labor equals the wage rate. This rule ensures that a firm only hires additional labor if the extra revenue generated equals or exceeds the additional cost, maximizing profit in the process.

Impact of Technological Change on Labor Productivity

Technological advancements can increase the productivity of labor, meaning that each worker can produce more output in the same amount of time. This improvement in productivity typically raises the marginal product of labor and can lead to an adjustment in the optimal number of workers hired, as long as the increase in output translates into increased revenue when evaluated against the prevailing wage rate.

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