Economists have calculated that if unions were as common today as they were in 1979, weekly wages for men not in a union would be 5 percent higher; for noncollege-educated men, 8 percent higher. If that bump sounds small, compare that to the fact that, since 1979, wages for the typical hourly worker have increased only 0.3 percent a year. Meanwhile, pay for the richest 1 percent has risen by 190 percent.

