Drawing and interpretation of diagrams that illustrate the effects of changes in demand and supply in the labour market

What is the Labour Market?

Think of the labour market as a big marketplace where workers (sellers) offer their time and skills, and firms (buyers) demand those skills to produce goods and services. The price in this market is the wage (W). 📈

Firms hire workers because each worker adds value. The demand curve slopes downward: as wages fall, firms want more workers.

📊 Analogy: Imagine a bakery that wants more bakers when the price of flour drops, so they can bake more bread at lower cost.

Workers supply labour because they earn wages. The supply curve slopes upward: higher wages attract more workers.

📚 Analogy: Think of a dance club: the higher the entrance fee, the more people are willing to pay to dance.

The equilibrium wage (W^*) and quantity of workers (Q^*) occur where the demand and supply curves intersect.

Mathematically:

\$ D(W) = S(W) \;\;\Rightarrow\;\; W^{*} \text{ and } Q^{*} \$

In our tables, the intersection is at $10 wage and 10 workers.

1. Increase in Demand: A new tech gadget boosts demand for software developers. The demand curve shifts right → higher equilibrium wage and more workers.
2. Decrease in Demand: A factory automation reduces need for manual labor. Demand curve shifts left → lower wage and fewer workers.
3. Increase in Supply: More people graduate with IT skills. Supply curve shifts right → lower wage, more workers.
4. Decrease in Supply: A health crisis reduces workforce availability. Supply curve shifts left → higher wage, fewer workers.

📌 Remember: A shift changes the curve, not just the point on the curve.

How to Answer Diagram Questions

1. Label axes: Wage (W) on the vertical, Quantity of Workers (Q_L) on the horizontal.
2. Mark the initial equilibrium point.
3. Show the shift direction with an arrow (right for increase, left for decrease).
4. Indicate the new equilibrium (W, Q).
5. Explain the economic reasoning in one or two sentences.

⚡ Quick tip: Use the word “shift” to describe a change in the entire curve, not just a movement along the curve.

In 2023, a surge in remote work increased demand for IT support staff. The demand curve for tech workers shifted right, raising the equilibrium wage from \$15 to \$18 and hiring 30% more workers. Meanwhile, the supply curve remained flat because the supply of qualified workers lagged behind the rapid demand growth.

👩‍💻 Analogy: Think of a sudden popularity of a new video game: more players (workers) want to join the gaming community, but only a few have the right skills, so the "price" (wage) rises.