This paper analyzes the productivity in the US rail industry for the period 1980 - 2006. I propose a value … productivity gains can be attributed to returns to scale and the reshuffling of resources to more efficient firms. However …, productivity slows down for the period 1995 - 2000 after important concentrations. I also look at the correlations between firm …

rapidly raising productivity while making workers redundant. This paper explores the evidence for this view among the IT …-using U.S. manufacturing industries. There is some limited support for more rapid productivity growth in IT … expectations, is that output contracts in IT-intensive industries relative to the rest of manufacturing. Productivity increases …

leading to low productivity growth. Lobby groups succeeded to gain significant control inside administrative structures …