WSJ:

Working families’ incomes have grown in recent decades. But the gains came mostly because they worked longer hours than because of wage increases, according to new research by the Brookings Institution‘s Hamilton Project.

Among two-parent families, median earnings did rise by an inflation-adjusted 23% from 1975 to 2009. But the parents’ combined hours worked increased by 26% during the same period—accounting for most of the income gains.

The ratio of CEO compensation to the average worker compensation in he US used to be in the region of 30 to 40 to 1 in the 1960s and 70s. This ratio has grown at a rapid rate since the early 1980s, reaching around 100 to 1 in the early 90s and rising to 300-400 to 1 by 2000s."

To sum things up:

According to the Economic Policy Institute... the average hourly wage for the US workers in 2007 dollars (that is, adjusted for inflation) rose from $18.90 in 1973 to $21.34 in 2006. That is a 13 percent increase in thirty-three years, which is around 0.4 percent growth per year... In other words, worker pay in the US has been virtually stagnant since the mid 1970s"