Stagflation
Stagflation is a combination of stagnant economic growth, high unemployment, and high inflation. The term gained prominence in the 1970s, when many advanced economies experienced simultaneously rising prices and rising unemployment, contradicting the prevailing view that inflation and unemployment moved in opposite directions. Stagflation poses a difficult challenge for policymakers, because the standard tools for fighting inflation, namely tightening monetary and fiscal policy, tend to worsen unemployment, and the tools for fighting unemployment tend to worsen inflation.
Historical experience
Stagflation in the 1970s followed the collapse of the Bretton Woods system of fixed exchange rates, the oil price shocks of 1973 and 1979, and the combination of expansionary monetary and fiscal policies with supply disruptions. Oil prices quadrupled in 1973, raising production costs across the economy and reducing output, while inflation accelerated. At the same time, unemployment rose, and the Phillips curve relationship appeared to break down.
The experience discredited the simple Phillips curve and led to the development of the expectations-augmented Phillips curve, which holds that the trade-off between inflation and unemployment exists only in the short run and that in the long run unemployment returns to its natural rate regardless of inflation. It also prompted a reassessment of the role of supply shocks and of the importance of anchoring inflation expectations.
Causes
Stagflation can arise from several sources. Supply shocks, such as sharp increases in the prices of energy, food, or other inputs, raise costs and reduce output while raising prices, producing the combination of stagnation and inflation. Adverse policy, including excessive monetary expansion combined with supply constraints, can also contribute. Wage-price spirals, in which expectations of inflation feed into wage demands and price setting, can entrench stagflation once it begins.
Structural factors, including rigid labour markets, declining productivity growth, and bottlenecked production, can make an economy more prone to stagflation, because supply cannot respond to price signals. The combination of weak supply and strong nominal demand is the classic recipe for stagflation.
Policy challenges
Stagflation presents a dilemma for policymakers. Monetary tightening can reduce inflation but at the cost of higher unemployment and lower output. Monetary easing can support output and employment but at the cost of higher inflation. Fiscal policy faces a similar dilemma, and the scope for demand management in either direction is limited when both inflation and unemployment are high.
The resolution of stagflation in the 1980s involved a determined disinflation, with central banks raising interest rates sharply to break inflation expectations, accepting a deep recession and high unemployment in the short run. This episode established the importance of central bank credibility and independence, and it informed the adoption of inflation-targeting frameworks in many countries. It also underscored the value of supply-side policies to improve the productive capacity of the economy and to reduce vulnerability to shocks.
Contemporary relevance
Stagflation remains a concern in modern economies, particularly when supply shocks coincide with strong demand. The disruptions of the pandemic, the energy price spike following the conflict in Ukraine, and the associated inflation have raised questions about the risk of stagflation and about the appropriate policy response. Central banks have responded by raising rates to contain inflation, weighing the risk of a downturn against the risk of entrenched inflation.
The experience has renewed interest in supply-side policies, including investment in energy security, measures to improve productivity, and reforms to reduce bottlenecks. It has also highlighted the importance of international cooperation to address global supply disruptions and to avoid policies that shift problems from one country to another. Understanding stagflation is essential for anticipating and responding to episodes when growth and price stability come into conflict.
Measurement and identification
Identifying stagflation requires assessing whether an economy is experiencing simultaneous weakness in growth and elevated inflation. This is not straightforward, because growth and inflation are measured with error and because temporary factors can distort both. Analysts examine a range of indicators, including output gaps, unemployment, wage growth, inflation expectations, and measures of slack, to determine whether stagflation risk is genuine.
The distinction between temporary and persistent stagflation matters for policy. A temporary supply shock that raises prices and reduces output may require limited intervention, while a persistent combination of weak growth and high inflation, especially if expectations become unanchored, requires a more forceful response. Judging which situation prevails is one of the most difficult tasks in macroeconomic policy.
Supply-side responses
Addressing stagflation often requires supply-side measures, since demand management is constrained by the conflict between inflation and unemployment. Policies to improve energy security, diversify supply sources, and reduce dependence on volatile inputs can lower vulnerability to supply shocks. Investment in infrastructure, skills, and technology can raise productive capacity and ease supply bottlenecks.
Structural reforms to improve the flexibility of product and labour markets can help the economy to adjust to shocks with less inflation and unemployment. These reforms take time to bear fruit, so they are complements to, rather than substitutes for, short-run stabilisation policy. The combination of demand management, supply-side measures, and measures to protect the vulnerable is typically required to respond to stagflation effectively.
International dimensions
Stagflation often has international dimensions, since supply shocks and inflation are transmitted across borders through trade, commodity markets, and financial linkages. A coordinated response can be more effective than unilateral action, particularly when the shock is global. International cooperation on energy security, trade, and macroeconomic policy can help to reduce the severity and duration of stagflation.
However, coordination is difficult, and countries may respond with measures that shift problems elsewhere, such as export restrictions or competitive depreciation. Avoiding such outcomes requires dialogue and shared frameworks, and it underscores the value of international institutions in managing global shocks. The experience of the 1970s, when coordination was limited, offers lessons for managing future episodes.