Here’s a sobering thought: by the time most workers get into their 50s, their earnings are declining. Although older workers don’t necessarily see smaller paychecks, their earnings are effectively shrinking, because they no longer keep up with inflation, according to a study charting the inflation-adjusted, or “real,” earnings of some 5 million U.S. workers over their lifetimes. The first decade in the labor force, between ages 25 to 35, is crucial – that’s where the wage gains are concentrated, the researchers find. Real earnings plateau sometime between 35 and 45, and this plateau occurs earlier than previous research had indicated. By the time most people move into the oldest age group in the sample – 45 to 55 – their…