Wages are the payments firms make to workers in exchange for labor. In AP Macro, the key idea is timing. In the short run some wages are sticky (fixed by contracts), but in the long run wages fully adjust, which is exactly why the LRAS curve is vertical at full-employment output.
Wages are what workers get paid for their labor, whether hourly, daily, or per task. In AP Macro, though, the definition isn't the interesting part. What matters is how fast wages adjust, because that's literally how the CED defines the short run versus the long run (LO 3.4.A).
In the short run, some input prices, especially wages, are sticky. Workers sign contracts, salaries get set once a year, and firms can't instantly reprice labor. That stickiness is why output can drift above or below potential. In the long run, all wages and prices are fully flexible. They adjust until the economy lands back at full-employment output. That single assumption does a lot of work: it makes the LRAS curve vertical (LO 3.4.B), it powers the economy's self-correction mechanism, and it kills any long-run trade-off between inflation and unemployment.
Wages live at the heart of Topic 3.4 (Long-Run Aggregate Supply) in Unit 3: National Income and Price Determination. LO 3.4.A defines the short run and long run by wage flexibility, and LO 3.4.B uses flexible wages to explain why LRAS is vertical at the full-employment level of output. If you can't explain wage adjustment, you can't explain why a demand shock changes real GDP in the short run but only changes the price level in the long run. That logic chain (sticky wages → short-run gap → wages adjust → economy returns to potential) is the backbone of almost every AD-AS adjustment question on the exam, and it sets up the long-run Phillips curve argument later in the course.
Keep studying AP Macroeconomics Unit 3
Real Wages (Units 2-3)
Your paycheck is a nominal wage. Your real wage is what that paycheck actually buys after adjusting for the price level. Long-run adjustment is really a story about real wages, since rising prices erode real wages even when the number on the paycheck stays the same.
Full-Employment Output (Unit 3)
Flexible wages are the mechanism that drags the economy back to full-employment output. In a recessionary gap, unemployed workers eventually accept lower wages, production costs fall, SRAS shifts right, and output returns to potential. No wage flexibility, no self-correction.
Labor Market (Unit 2)
Wages are the price of labor, set where labor supply meets labor demand. Cyclical unemployment exists precisely because that price doesn't adjust instantly. If wages cleared the labor market in real time, recessions would fix themselves immediately.
Long-Run Phillips Curve (Unit 5)
Because wages fully adjust in the long run, there is no lasting trade-off between inflation and unemployment. The CED states this directly in 3.4.A, and it's the entire reason the long-run Phillips curve is vertical at the natural rate of unemployment.
Wages show up as the reason behind answers, not usually as the question itself. MCQs ask things like "why is LRAS vertical rather than upward sloping?" or "what happens in the short run versus the long run after a positive demand shock?" The correct answer almost always hinges on the phrase "wages and prices fully adjust in the long run." On FRQs, this is the engine of output-gap questions. The 2023 FRQ (Vanderlandia, real GDP of $500 million vs. full employment at $550 million), the 2024 FRQ (Alpha with 3% cyclical unemployment), and the 2025 FRQ (two countries below full employment) all set up gaps that close, with or without policy, through wage adjustment. When an FRQ asks what happens "in the long run, with no policy action," your answer should explicitly say nominal wages fall (or rise), shifting SRAS until output returns to potential.
"Wages" usually means nominal wages, the dollar amount on the paycheck. Real wages adjust that number for the price level, measuring actual purchasing power. The distinction matters for adjustment stories. After inflation, a worker's nominal wage might be unchanged while their real wage has fallen, and it's the real wage change that motivates workers to renegotiate, which is what shifts SRAS over time.
In AP Macro, the short run is defined as the period when some wages and input prices are sticky, and the long run is when all wages and prices are fully flexible.
The LRAS curve is vertical at full-employment output because wages and prices fully adjust in the long run, so the price level cannot change long-run output.
Flexible wages are the self-correction mechanism. In a recessionary gap, nominal wages eventually fall, shifting SRAS right and returning output to potential.
Because wages adjust fully in the long run, there is no long-run trade-off between inflation and unemployment.
Distinguish nominal wages (the dollar amount) from real wages (purchasing power), since long-run adjustment is driven by changes in real wages.
Wages are payments to workers for their labor, the price of labor in the labor market. AP Macro cares most about wage flexibility, because sticky short-run wages versus fully flexible long-run wages is how Topic 3.4 defines the short run and the long run.
If wages fully adjust, any change in the price level gets matched by a proportional wage change, so firms' real production costs and output don't change. That pins long-run output at full-employment GDP regardless of the price level, which is a vertical line on the AD-AS graph.
No. Wages are sticky only in the short run, because of contracts and slow renegotiation. The CED's essential knowledge for 3.4.A states that in the long run all prices and wages are fully flexible, which is what eliminates output gaps without any policy action.
Wages (nominal wages) are the raw dollar amount workers are paid, while real wages divide out the price level to measure purchasing power. If prices rise 5% and your nominal wage stays flat, your real wage just fell 5%, even though your paycheck looks identical.
With output below potential (like Vanderlandia's $500 million vs. $550 million on the 2023 FRQ), unemployment puts downward pressure on nominal wages. Lower wages cut production costs, SRAS shifts right, and the economy returns to full-employment output at a lower price level.
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