From the Introduction: "Wage earnings are the largest source of income for many workers, and wage gains are a primary lever for raising living standards. Evidence that wage growth has stagnated among low- and middle-wage workers has therefore been viewed with concern and has raised questions about the patterns and magnitudes of these trends. This report addresses such questions by examining real (inflation-adjusted) wage trends over the 1979 to 2018 period. Specifically, it uses cross-sectional data collected from the Current Population Survey (CPS), a nationally representative sample of workers, to estimate real hourly wages at the 10th, 50th (median), and 90th percentiles of the wage distribution in each year, and then explores how those wage levels change over time. The sample comprises employed (full-and part-time), nonmilitary nonfarm wage and salary earners aged 25 to 64 years. Finally, all hourly wages were converted to 2018 dollars using the Consumer Price Index for All Urban Consumers, U.S. City Average (CPI-U)."
CRS Report for Congress, R45090
Congressional Research Service: https://crsreports.congress.gov/