Whenever inflation runs hot and workers push for bigger pay rises, the same phrase appears in central bank speeches and newspaper columns: the wage-price spiral. It describes a feedback loop where higher prices lead to higher wages, which lead to higher prices again. Understanding the idea helps explain why policymakers watch pay settlements so closely.
How the spiral works
The loop has a simple logic. Prices rise, perhaps because of an energy shock or supply shortages. Workers see their living costs climb and ask for higher pay to keep up. Employers agree, but to protect their profit margins they raise their own prices. That pushes the cost of living up again, prompting another round of wage demands.
If each side keeps reacting to the other, inflation can become self-sustaining. The original shock may fade, yet prices keep rising because wages and prices are chasing each other. At that point, inflation is no longer about oil or supply chains; it has become embedded in how people set pay and prices.
Why central banks worry
Central banks can usually look through a one-off price shock. If petrol prices jump and then stabilise, inflation should drop back on its own. What they fear is the shock spreading into wages and becoming permanent.
That is why expectations matter so much. If workers and firms believe inflation will stay high, they build that belief into pay deals and price lists, which helps make it come true. Our guide to a central bank’s reaction function explains how policymakers respond when they see these signs, often by raising interest rates to cool demand.
The 1970s example
The textbook case is the 1970s. Oil price shocks pushed inflation sharply higher in the UK, the US and elsewhere. Trade unions were powerful and wage indexation, where pay rises automatically with prices, was common. Wages and prices pushed each other upward for years. UK inflation peaked above 20% in the mid-1970s.
Breaking the spiral required painful action. In the US, the Federal Reserve under Paul Volcker raised interest rates to very high levels around 1980, triggering recessions but eventually bringing inflation down. That experience shaped central bank thinking for decades.
Is it a real risk today?
Economists disagree about how common true spirals are. Some research suggests that periods of rising wages and prices do not always turn into lasting spirals, especially when inflation expectations stay anchored and central banks are credible. Labour markets today also differ from the 1970s, with lower union membership and less automatic indexation.
Still, after the inflation surge of 2021 to 2023, central banks paid close attention to wage growth. In the UK, the Bank of England highlighted pay growth and services inflation as signs of how persistent inflation might be. Services prices are heavily driven by labour costs, so strong wage growth tends to keep services inflation high.
What traders watch
Traders follow several measures to judge whether a spiral is forming. In the US, average hourly earnings in the monthly jobs report and the employment cost index are key. Our explainer on why traders watch average hourly earnings covers the first. In the UK, regular pay growth from the Office for National Statistics and pay settlement surveys are closely watched.
Inflation expectations matter too, both from surveys of households and businesses and from market measures. Rising expectations alongside strong pay growth is the combination that most worries policymakers.
When data hints at a spiral, markets typically price higher interest rates for longer. Short-term bond yields rise, the currency may strengthen and rate-sensitive shares can come under pressure. When wage growth cools, those moves can reverse.
The bottom line
A wage-price spiral is a feedback loop that can turn a temporary price shock into lasting inflation. It is rarer than headlines suggest, but central banks take the risk seriously because breaking a spiral once it starts is costly. Watching wages and expectations alongside headline inflation gives a fuller picture. To test how well you understand links like this, take the free Samuel & Co trader assessment.
