[calcowgirl]

Sawhill said several factors could explain the divergence: a growing share of income going to the highest-paid workers, or to profits; an increased share of labor compensation going toward benefits such as health care; or a decline in the number of wage earners, or hours worked, in the typical family.

Gee... how could the WSJ have missed this one? - Businesses supplementing work force with a neverending flow of cheap labor in the form of illegal immigrants, driving competitive wage rates down.

[Fabozz]

There’s other factors they missed. Women’s participation in the workforce was 46% in 1975, but 59% in 2005. That additional 16.6 million workers also drives down men’s wages.