Full Employment vs Natural Rate of Unemployment
Full Employment and Natural Rate of Unemployment are two Unemployment & Inflation concepts in AP Economics that students often mix up. Full employment is the level of employment where there is no cyclical unemployment. The natural rate of unemployment is the lowest level of unemployment that can be sustained without causing inflation to rise. Here is how they compare side by side.
Full employment occurs when the economy is operating at its potential output, and there is no cyclical unemployment. However, full employment does not mean that everyone has a job, as there will still be some frictional and structural unemployment. Policymakers often aim to achieve full employment while keeping inflation under control.
The natural rate of unemployment is the sum of frictional and structural unemployment. It represents the level of unemployment that exists even when the economy is operating at full capacity. If unemployment falls below the natural rate, it can lead to upward pressure on wages and prices, potentially causing inflation.
Full Employment vs the Natural Rate: One Is a State, One Is a Number
| Full Employment | Natural Rate of Unemployment | |
|---|---|---|
| What the term names | A condition of the whole economy, with output at potential | A percentage, the unemployment rate that holds in that condition |
| Unit it is measured in | Dollars of real GDP | Percent of the labor force |
| Cyclical unemployment | Zero by definition | Excluded from it, since only frictional plus structural are counted |
| Where it appears on a graph | The output level marked by the vertical LRAS curve | The rate marked by the vertical long-run Phillips curve |
| What makes it move | Anything that shifts LRAS: capital stock, labor force, technology | Labor market institutions: job matching, benefits, mobility, skills mismatch |
| Can the economy pass it | Yes, real GDP can exceed potential during a boom | Yes, the actual rate can fall below it, making cyclical unemployment negative |
Full employment still leaves people unemployed, and the arithmetic shows how many
Take a hypothetical labor force of 250 thousand workers. Nine thousand are between jobs after voluntary moves, which is frictional unemployment, and six thousand lack the skills that open positions require, which is structural unemployment. With no cyclical unemployment, total unemployment is 15 thousand out of 250 thousand, an unemployment rate of 6 percent. That economy is at full employment while 6 percent of its labor force is out of work, and 6 percent is its natural rate. Now add a recession that idles another 5 thousand workers. Unemployment becomes 20 thousand out of 250 thousand, or 8 percent. Cyclical unemployment is the actual rate minus the natural rate, 8 minus 6, so 2 percentage points. Writing that subtraction explicitly is what secures the point on a free-response question. Answers claiming that full employment means a zero unemployment rate lose it, because a zero rate would require nobody anywhere to be changing jobs or retraining, which is neither achievable nor desirable.
The actual rate can drop below the natural rate, and that is when inflation accelerates
Full employment is a ceiling on sustainable output, not a hard limit on measured output. During a strong expansion, firms hire from a shrinking pool, vacancies get filled faster than normal search would predict, and the actual unemployment rate falls below the natural rate. Cyclical unemployment turns negative. On the diagrams, that is real GDP to the right of LRAS and a point on the short-run Phillips curve to the left of where it crosses the long-run Phillips curve. The condition is temporary by construction. Wages and input prices catch up, expected inflation rises, short-run aggregate supply shifts left, and the economy returns to potential at a higher price level. Two habits follow. When a question reports unemployment below the natural rate, expect the answer to involve accelerating inflation and a self-correcting move back toward potential. When the same question asks about the long run, put output back at LRAS and unemployment back at the natural rate, because nothing in the model allows that gap to persist.
Three labels point at the same equilibrium, and questions swap between them
Potential output, full-employment output, and the output level at the long-run aggregate supply curve are three names for one quantity, measured in dollars of real GDP. The natural rate of unemployment and the non-accelerating inflation rate of unemployment are two names for the matching quantity, measured in percent of the labor force. A prompt can introduce the idea in either unit and then ask for the other, which is where careless answers break down. A question stating that the economy is producing at potential is telling you the unemployment rate equals the natural rate. A question stating that unemployment equals the natural rate is telling you real GDP equals potential. Neither statement claims that inflation is zero. Both claim only that the output gap is zero, and inflation can be running at any steady rate alongside them, which is why an economy at full employment with 4 percent steady inflation is a perfectly consistent scenario. Keep the units straight in your answer, giving output in dollars and unemployment in percent, because a grader reads the unit before reading the value.
Frequently asked questions
Does full employment mean an unemployment rate of zero?
Full employment means zero cyclical unemployment, not zero unemployment. Frictional unemployment continues because workers move between jobs, and structural unemployment continues because some skills do not match the openings available. A labor force of 250 thousand with 9 thousand workers between jobs and 6 thousand facing a skills mismatch sits at full employment while recording a 6 percent unemployment rate. A zero rate would require nobody to be searching or retraining at any moment, which no economy reaches and which would not even be desirable, since job search is how workers get matched to better positions.
How do you calculate cyclical unemployment?
Cyclical unemployment equals the actual unemployment rate minus the natural rate of unemployment. With an actual rate of 8 percent and a natural rate of 6 percent, cyclical unemployment is 2 percentage points and the economy sits in a recessionary gap. A negative result is meaningful rather than an arithmetic mistake: an actual rate of 5 percent against a natural rate of 6 percent gives minus 1 percentage point, which signals an inflationary gap with real GDP above potential.
Are full employment and the natural rate of unemployment the same thing?
Full employment and the natural rate describe the same equilibrium in two different units. Full employment is a state of the economy, with real GDP at potential and cyclical unemployment at zero. The natural rate is the percentage of the labor force still unemployed in that state, made up of frictional and structural unemployment together. Use full employment when a question asks about output or about the position of AD relative to LRAS, and use the natural rate when the question wants a percentage.
Live AD/AS Model graph. Drag the curves, or open the full version.
Live Phillips Curve graph. Drag the curves, or open the full version.
Related comparisons
Get AP Econ exam tips in your inbox
Occasional emails with study tips, new interactive graphs, and exam-season reminders. Free, no spam.
No spam. Unsubscribe anytime. Read our privacy policy.
Keep track of what you have studied
A free EconLearn account adds progress tracking, your quiz history, and achievements. Studying here is free either way, and there is nothing to pay for as a student.
Create a free accountAlready have one? Sign in
Last updated