The labour market

Welcome to the Labour Market!

In this chapter, we are going to explore how the "price" of work—your wage—is decided. Think of the labour market just like any other market you’ve studied (like the market for apples or iPhones). There are people who want to buy (firms needing workers) and people who want to sell (you providing your skills).

Don't worry if this seems a bit "maths-heavy" at first with theories like Marginal Productivity. We will break it down using simple examples like flipping burgers or coding software. By the end of these notes, you’ll understand why a brain surgeon earns more than a barista and how the government steps in to make things fairer.

1. The Demand for Labour: Why do firms hire?

The most important thing to remember is that demand for labour is a derived demand. This means firms don't want workers because they just like having people around; they want them because consumers want the products those workers make.

Example: If nobody wants to buy coffee, coffee shops won't need baristas. The demand for baristas is "derived" from the demand for lattes.

Marginal Productivity Theory

How does a firm decide exactly how many workers to hire? They use a calculation called Marginal Revenue Product (MRP). This is the extra revenue a firm gets from hiring one more worker.

The formula is:
\( MRP = MPP \times MR \)

Where:
- MPP (Marginal Physical Product): The extra physical output one more worker produces (e.g., 10 extra burgers).
- MR (Marginal Revenue): The price the firm sells that output for (e.g., £2 per burger).

If the 11th burger costs the firm £15 in wages but brings in £20 in revenue (MRP), the firm makes a profit and will hire them!

What shifts the Demand Curve for Labour?

1. Changes in demand for the product: If people want more of the good, the demand for labour shifts right.
2. Changes in productivity: If workers become more efficient (better training), their MRP rises, and demand shifts right.
3. The price of capital: If robots become cheaper than humans, firms might switch, and demand for labour shifts left.

Quick Review: The demand curve for labour is downward sloping because of diminishing marginal returns—as you add more workers to a fixed amount of space/machinery, the extra amount each new worker adds eventually starts to fall.

2. The Supply of Labour: Why do we work?

The supply of labour is the number of hours people are willing and able to work at a given wage rate. Usually, as wages go up, more people want to work.

Monetary vs. Non-Monetary Considerations

People don't just work for the paycheck! While monetary factors (the wage, bonuses) are huge, non-monetary factors also matter:

- Job Satisfaction: People might take a lower wage to do a job they love (e.g., charity work).
- Working Conditions: Is it dangerous? Is it outside in the rain?
- Job Security: Is the job "safe" for the long term?
- Holiday and Perks: Flexible hours or free gym memberships.

What shifts the Supply Curve for Labour?

1. Population size: More people in the country usually means a higher supply of workers.
2. Education and Training: If a job requires a 7-year degree, the supply will be much lower (shifted left) than a job that requires no training.
3. Changes in the retirement age: If the government raises the retirement age, the supply of labour increases.

Did you know? In the AQA syllabus, you do not need to worry about the "backward-bending" supply curve. Just focus on the fact that higher wages generally attract more workers to an occupation!

3. Wage Determination in Competitive Markets

In a perfectly competitive labour market, the wage is settled where Labour Demand (MRP) = Labour Supply.

- If the wage is too high, there is a "surplus" of workers (unemployment).
- If the wage is too low, there is a "shortage" of workers (firms can't find staff).

In these markets, workers are price takers. They have to accept the "going rate" for the job.

Key Takeaway: Wages differ between jobs because of differences in skills (MRP) and the scarcity of workers (Supply). This explains why professional footballers earn more than cleaners—there are millions of people who can clean, but very few who can play like Lionel Messi!

4. Imperfect Markets: Monopsony Power

Real life isn't always perfectly competitive. Sometimes, there is a Monopsony—this is a market with only one main buyer of labour.

Example: The NHS is a "monopsonist" for nurses in the UK. If you are a nurse, there is basically only one big employer to work for.

How Monopsonies behave:

A monopsonist has market power. They know that if they want to hire more workers, they have to offer a higher wage. Crucially, they have to pay that higher wage to all their existing workers too!
This means the Marginal Cost of Labour (MCL)—the cost of hiring one more person—is actually higher than the average wage.

Result: A monopsony employer will hire fewer workers and pay them a lower wage than a perfectly competitive market would. This is considered a market failure because it's inefficient.

5. Trade Unions

A Trade Union is an organization that represents workers to give them collective bargaining power. Instead of one worker asking for a raise, the whole group asks together.

Trade Unions in different markets:

1. In a Competitive Market: If a union forces wages above the equilibrium, it usually leads to a contraction in demand (firms fire people) and a surplus of supply, leading to unemployment.
2. In a Monopsony Market: This is the "magic" of unions! Because the employer was already keeping wages artificially low, a union can actually increase wages and increase employment at the same time by forcing the employer to act more like a competitive market.

Memory Aid: Think of a union as a "Monopoly of Supply" fighting against a "Monopsony of Demand."

6. The National Minimum Wage (NMW)

The government often sets a National Minimum Wage—a legal floor below which wages cannot fall.

Arguments for NMW:

- Reduces Poverty: Helps the "working poor" afford basic needs.
- Incentive to Work: Increases the gap between benefits and work, encouraging people to find jobs.
- Productivity: If firms have to pay more, they might invest more in training to make sure those workers are "worth it."

Arguments against NMW:

- Unemployment: If the wage is set too far above the market rate, firms may not be able to afford staff and will make people redundant.
- Cost-Push Inflation: Firms might raise their prices to cover the higher wage costs.

7. Discrimination in the Labour Market

Labour market discrimination happens when an employer makes decisions (hiring or wages) based on characteristics like gender, ethnicity, or age rather than MRP (how good they are at the job).

Impacts of Discrimination:

- For Workers: Lower wages and fewer job opportunities for the group being discriminated against.
- For Firms: This is actually bad for firms! A firm that refuses to hire talented people because of their background is increasing its own costs because it isn't hiring the most productive staff.
- For the Economy: It leads to a misallocation of resources and a waste of human potential.

Quick Review Box:
- Demand = Based on MRP (revenue a worker brings in).
- Supply = Based on wages and job satisfaction.
- Monopsony = Only one buyer; results in lower wages.
- Minimum Wage = A price floor to protect low-income earners.
- Discrimination = When wages are based on prejudice, not productivity.

Don't worry if the diagrams for Monopsony or Trade Unions feel a bit complex—just remember that in a Monopsony, the "Marginal Cost" curve is always above the "Average Cost" (Supply) curve!