For most of the postwar era, economists believed they had cracked the code. The Phillips curve promised a tidy trade-off: push unemployment down and inflation ticks up; cool inflation and joblessness rises. Central bankers could dial the economy like a thermostat. Then the 1970s arrived and shattered the illusion. Prices soared while factories idled. Help-wanted signs vanished even as grocery bills doubled. The impossible had a name: stagflation.
The term itself — a portmanteau of stagnation and inflation — entered the lexicon through British politics in the mid-1960s, but it became the defining economic trauma of the following decade. Understanding why stagflation happens, and why it resists easy cure, remains essential for anyone trying to make sense of monetary policy debates today.
The mechanism of misery
Ordinary inflation typically signals an overheating economy. Businesses raise prices because customers are spending freely; workers demand raises because jobs are plentiful. The remedy, while painful, is straightforward: central banks raise interest rates, borrowing becomes expensive, demand cools, and price pressures ease.
Stagflation breaks this logic. The catalyst is usually a supply shock — something that raises production costs across the economy regardless of demand. The oil embargo of 1973 is the textbook example. When petroleum prices quadrupled almost overnight, manufacturers faced higher input costs whether they were selling one widget or one million. They raised prices not because consumers were flush but because making anything had become more expensive. Meanwhile, those same higher costs squeezed profit margins and forced layoffs. Inflation and unemployment rose in tandem, violating the Phillips curve's neat prediction.
The policy trap
Faced with stagflation, central bankers confront an ugly dilemma. Raise rates to fight inflation, and you crush an already weak labour market. Cut rates to stimulate hiring, and you pour fuel on the inflationary fire. There is no costless exit.
The United States tried both approaches in sequence. The Federal Reserve under Arthur Burns kept policy relatively loose through much of the 1970s, hoping growth would return on its own. Inflation metastasised. By the time Paul Volcker took the helm in 1979, he concluded that only a brutal monetary tightening could break the inflationary psychology that had embedded itself in wage negotiations and price-setting. The prime rate eventually exceeded twenty percent. Unemployment peaked above ten percent. The recession was savage, but inflation finally broke.
The lesson central bankers absorbed: credibility matters more than comfort. Once households and businesses expect persistent inflation, they act in ways that make it self-fulfilling. Breaking those expectations requires demonstrating a willingness to inflict economic pain.
Why the fear persists
Modern economies have not experienced true stagflation since the early 1980s, yet the spectre haunts every policy meeting where supply shocks are discussed. Energy price spikes, pandemic-induced bottlenecks, geopolitical disruptions to trade — any of these can reproduce the essential dynamic of rising costs without rising demand. Central bankers know that if they hesitate, they risk repeating the Burns-era mistake of allowing inflation expectations to drift upward. Yet aggressive tightening amid weak growth courts political backlash and genuine hardship.
The term itself has become something of a rhetorical weapon. Commentators invoke stagflation whenever they wish to sound maximally alarmed, often loosely. True stagflation requires sustained, simultaneous elevation of both inflation and unemployment — not a single quarter of soft growth alongside elevated prices. The distinction matters because policy responses differ.
Our take
Stagflation is less a disease than a diagnosis of policy failure — the moment when the economy's shock absorbers have been overwhelmed and no lever moves without breaking something else. The 1970s taught that early, credible action against inflation is cheaper than belated panic. But the deeper lesson is humility: supply shocks remind us that central banks control demand, not the world. When the world delivers a blow, someone pays. The only question is who, and how transparently the choice is made.
