[2.1.2d] Government controls
Government Controls: Price Controls and Legal Controls
Beyond fiscal, monetary and supply-side policy, governments intervene directly in markets through price controls and legal controls. These tools impose specific rules on how markets operate, rather than influencing them through taxation, spending or interest rates.
Price Controls
A maximum price (also called a price ceiling) sets the highest price a seller is legally permitted to charge. For a maximum price to have any effect, it must be set below the free market equilibrium price. If set above equilibrium, the market already transacts below the ceiling and the rule is irrelevant.
Purpose: to keep essential goods affordable — particularly important in markets for food, rent or fuel where high prices cause hardship for lower-income consumers.
At the maximum price Pm (below equilibrium P*): supply falls to QS (firms produce less at the lower price) whilst demand rises to QD (consumers want more at the lower price). The result is a shortage — demand exceeds supply. This may lead to queuing, rationing or black markets where goods are sold illegally above the ceiling.
A minimum price (also called a price floor) sets the lowest price a seller is legally permitted to charge (or a buyer must pay). For a minimum price to be effective, it must be set above the free market equilibrium. If set below equilibrium, the market already trades above the floor and the rule is irrelevant.
Purpose: to protect producers or workers from prices falling too low — ensuring viable incomes. Examples include the national minimum wage (labour market) and minimum prices for agricultural goods or alcohol.
At the minimum price Pm (above equilibrium P*): demand falls to QD whilst supply rises to QS. The result is a surplus — supply exceeds demand. The government may need to buy up the surplus to maintain the price floor (as the EU has historically done with agricultural goods under the Common Agricultural Policy).
Legal Controls
Governments also intervene through legislation that governs how businesses operate and how transactions take place:
- Laws on working hours: maximum weekly working hours (e.g. the EU Working Time Directive limits most workers to 48 hours per week average) protect worker health and wellbeing. They may reduce productivity per hour if firms cannot schedule overtime, but improve worker welfare and reduce accidents from fatigue.
- Health and safety requirements: regulations obliging employers to provide safe working environments — protective equipment, risk assessments, machinery safeguards. They reduce workplace accidents and illness, protecting workers and reducing the societal costs of occupational injury. Compliance costs firms money, but the social benefits (fewer injuries, lower healthcare costs) are significant.
- Consumer protection laws: laws that ensure products are safe, accurately described and sold under fair contract terms. Examples include: Sale of Goods Act (goods must be fit for purpose), Trading Standards legislation, distance selling regulations, and financial conduct rules. These laws correct information asymmetries (where sellers know more than buyers) and protect consumers from exploitation or dangerous products.
Key Takeaways
- A maximum price (ceiling) is set below equilibrium to keep prices affordable — but creates a shortage.
- A minimum price (floor) is set above equilibrium to protect producers — but creates a surplus.
- Both price controls only affect the market if set on the correct side of the equilibrium price.
- Legal controls — working hours limits, health and safety law, consumer protection — correct market failures arising from unequal power, information asymmetry and negative externalities in employment and product markets.