Markets for Factors of Production

Introduction

This chapter explores the structure and functioning of factor markets, focusing on how labour, capital, land, and entrepreneurship are traded and priced. It explains how the value of marginal product determines the demand for factors, how wage rates and employment are set, and how unions and market structures influence outcomes.

The Anatomy of Factor Markets

Factors of Production

• Labour: The physical and mental work effort supplied by people to produce goods and services.

• Capital: Tools, machines, buildings, and other constructions produced in the past and used to produce goods and services.

• Land (Natural Resources): All gifts of nature, including land and nonrenewable resources like oil and coal.

• Entrepreneurship: The human resource that organizes labour, land, and capital. Entrepreneurs receive profit or bear loss but their services are not traded in markets.

Markets for Factor Services

• Labour Market: Where people and firms trade labour services. The price is the wage rate. Most labour markets are competitive, with wage rates determined by supply and demand.

• Capital Market: Capital goods are traded in goods markets, but capital services (the use of capital) are traded in rental markets.

• Land and Natural Resource Markets: The market for land is for the services of land (use of land), priced as a rental rate. Nonrenewable resources are traded in global commodity markets.

• Entrepreneurship: Not traded in markets; entrepreneurs earn profit or incur loss based on business outcomes.

The Demand for a Factor of Production

Derived Demand

• The demand for a factor is derived from the demand for the goods it helps produce.

• Firms hire factors to maximize profit, choosing quantities based on output decisions.

Value of Marginal Product (VMP)

• Definition: The value to the firm of hiring one more unit of a factor.

• Formula:

• Firms maximize profit by hiring factors up to the point where VMP equals the factor price (e.g., wage rate for labour).

Example: Calculating VMP

Additional info: VMP is calculated using a product price of $4 per unit (e.g., coffee).

Firm's Demand for Labour

• VMP shows the revenue from hiring one more worker.

• The firm hires workers up to the point where VMP = wage rate.

• If VMP > wage rate, hire more workers; if VMP < wage rate, reduce workers.

Shifts in Labour Demand

• Price of Output: Higher output prices increase VMP and shift labour demand rightward.

• Prices of Other Factors: If capital becomes cheaper, firms may substitute capital for labour, reducing labour demand.

• Technology: New technology can decrease demand for some labour types but increase it for others (e.g., automation reduces demand for manual labour but increases demand for technicians).

Labour Markets

Competitive Labour Market

• Many firms demand labour; many households supply it.

• Market demand for labour is the sum of all firms' labour demand at each wage rate.

• Market supply of labour is the sum of all individuals' labour supply decisions.

Labour Supply Decisions

• Individuals allocate time between leisure and labour based on the wage rate.

• Reservation wage: The lowest wage at which a person is willing to work.

• As wage rises above the reservation wage, more labour is supplied.

Labour Supply Curve

• At low wage rates, the substitution effect (work more as wage rises) dominates.

• At high wage rates, the income effect (work less as wage rises) dominates.

• Individual supply curves can bend backward at high wages, but market supply curves generally slope upward.

Market Equilibrium

• Equilibrium wage and employment are determined where market demand equals market supply.

Trends in Wage Rates

• Wage rates trend upward over time due to rising VMP and productivity.

• Technological change increases productivity and wage inequality.

Labour Unions

• Labour union: An organized group aiming to increase wages and improve job conditions.

• Unions can raise wages by restricting labour supply or increasing demand for union-made goods.

Capital and Natural Resource Markets

Capital Rental Markets

• Firms demand capital services based on the VMP of capital.

• Profit maximization: Hire capital until VMP = rental rate of capital.

Rent vs. Buy Decision

• Firms compare explicit rental costs with implicit costs (depreciation and interest) when deciding whether to rent or buy capital.

Land Rental Market

• Firms rent land up to the point where VMP of land = rental rate.

Nonrenewable Natural Resource Markets

• Resources like oil, gas, and coal are traded in global commodity markets.

• Prices and quantities are determined by demand and supply.

Demand and Supply for Oil

• Demand: Influenced by VMP of oil and expected future price.

• Supply: Influenced by known reserves, production scale, and expected future price.

• Higher expected future prices increase current demand and decrease current supply (speculation).

Market Equilibrium and the Hotelling Principle

• Equilibrium price is where VMP (demand) equals marginal cost (supply).

• Hotelling Principle: The price of a nonrenewable resource is expected to rise at the rate of interest.

• If price rises faster than interest, inventories are held; if slower, inventories are sold.

Summary Table: Factor Markets Overview