Over at Reports from the Economic Front, Martin Hart-Landsberg posted this graph. It shows that  workers have become increasingly productive since 1948 (i.e., they have created more and more surplus value).  Employers largely shared the increase in profitability with their workers… until the mid-1970s.  Since then, wages have remained stagnant even as worker productivity has continued to rise.  ”In other words,” Hart-Landsberg writes, “the owners of the means of production have basically stopped sharing gains in output with their workers.”