Here's an article which argues that wages have not been growing in line with productivity since 1973 because, since then, workers have been compensated with fri

Here's an article which argues that wages have not been growing in line with productivity since 1973 because, since then, workers have been compensated with fringe benefits of increasing value, in lieu of greater wages. [http://www.heritage.org/jobs-and-labor/report/productivity-and-compensation-growing-together http://www.heritage.org/jobs-and-labor/report/productivity-a...] I'm sure that this is not the whole story, but I bet it's a big part of it.