Supply-side policies can raise growth and cut unemployment without inflation, but they are slow and costly.
Supply-side policies raise how much the economy can produce. The PPC shifts outwards. So the economy can grow without running short of workers and machines.
Growth: better-skilled workers and better transport raise output. Unemployment: training gives people the skills firms need, so fewer are left without work when industries change.
Inflation: when each worker makes more, the cost of each unit falls. This eases price rises caused by rising costs. Trade: lower costs make exports cheaper, so they sell better abroad.
Drawbacks: these policies take years to work. A training scheme started today may only raise output several years later. They can cost a lot. Some, such as tax cuts or fewer rules, may widen the gap between rich and poor, or weaken protection for workers and the environment.
- Main effect
- Increases productive capacity; PPC shifts outwards.
- Benefits
- Growth, lower structural unemployment, lower cost-push inflation, more competitive exports.
- Drawbacks
- Slow, costly, may widen inequality.
Worked example: Training and the macro aims
Suppose a government funds large-scale training in digital skills.
- Unemployment: workers who lost jobs in declining industries can fill vacancies in growing ones, reducing structural unemployment.
- Growth: higher productivity raises output.
- Inflation: lower unit costs ease pressure on prices.
- Limit: results appear only after workers complete courses and find jobs, which takes time.
Watch out for this
Supply-side policies work quickly in a recession.
They work slowly, because building skills and infrastructure takes years. Demand-side policies act faster against a recession.
Check your understanding
Why can supply-side policy help growth without raising inflation?
- It increases productive capacity, so output can rise without shortages pushing up prices.
- It reduces total demand.
- It raises interest rates.