Forty Years of Wage Data. What the average hides about who actually captured four decades of economic growth.

Average real wage growth from 1979 to 2021 was 49.8% — about 1% annually over four decades. That number gets cited in two completely different arguments: as evidence that wages grew adequately, and as evidence that productivity gains went somewhere other than workers. Both sides are reaching past the same problem: the average is doing work it cannot support.

When a distribution is heavily skewed, the mean tells you almost nothing about the typical experience. It tells you about the aggregate — which in a wage distribution heavily influenced by exceptional growth at the top, is not the same thing at all.

The data source that tells the clearest story

Most wage analyses rely on the Current Population Survey or similar household surveys. These have a structural limitation: they “top-code” earnings at a threshold — typically around $150,000 — to protect respondent confidentiality. This effectively clips the top of the distribution and makes it impossible to see what the highest earners actually earn.

EPI researchers Elise Gould and Jori Kandra compiled SSA earnings data through 2021, using the methodology developed by Kopczuk, Saez, and Song (2007) to construct the distribution back to 1979 from matched Social Security records. The result is a consistent, uncapped time series of wage earnings across the full distribution for over four decades.

Where the growth went

The chart below shows cumulative real wage growth for four groups since 1979, in 2021 dollars.

The top 0.1% are not visible in most wage discussions because standard survey data cannot see them clearly. The SSA data can. Their cumulative wage growth since 1979 is 465% — nearly seventeen times the growth rate of the bottom 90%.

In absolute dollar terms, the divergence is even starker. In 1979, the average bottom 90% worker earned $28,415 in inflation-adjusted terms. By 2021: $36,571. A gain of roughly $8,200 over 42 years. The average top 1% earner went from $267,464 to $819,324 — a gain of $552,000 over the same period.

A shrinking share of the total

Wage growth rates tell one story; wage shares tell another. As the top of the distribution grew faster, it claimed an increasingly large portion of total wages — a pie that was also growing, but not growing fast enough to give everyone a proportionally equal slice.

In 1979, the bottom 90% received 69.8% of all wages. By 2021, that had fallen to 58.6% — a decline of 11.2 percentage points. The top 1%’s share doubled from 7.3% to 14.6%. The top 0.1%’s share nearly quadrupled, from 1.6% to 5.9%.

This is not primarily a story about wages falling in absolute terms. The bottom 90% did earn more in real terms in 2021 than in 1979. It is a story about differential growth rates sustained over four decades producing a substantially different distribution.

The pandemic sharpened the pattern

The 2020 data is difficult to interpret. Mass layoffs in low-wage service industries temporarily inflated average wages by removing the lowest earners from the measured workforce — a composition effect, not actual wage improvement. The 2021 data is cleaner: once the labor market normalized, the underlying trend resumed — sharply.

During the pandemic, the only wage group to experience real gains was at the very top. This does not negate the modest long-term absolute gains of the bottom 90%. But it is difficult to square with claims that wage growth has been broadly shared.

What this data can and cannot tell us

SSA annual earnings cover wages and salaries only. Capital income — dividends, interest, capital gains, carried interest — is not included. Capital income is substantially more concentrated than wages. These figures are a conservative lower bound on total earnings inequality, not an upper bound.

The causal picture is genuinely contested. EPI attributes the inequality growth primarily to declining union density, policy choices around minimum wages and labor standards, and globalization structured to benefit capital over labor. Other economists emphasize technology and skill-biased technical change, which increased returns to high-skill work. Both forces are real. Their relative weight is where serious people disagree.

What is not contested: wages for the bottom 90% grew at roughly one-seventh the rate of wages for the top 1% over this period. The top 1%’s share of total wages doubled. Both findings hold across virtually every methodology and data source that has examined the question seriously.