This report explores the crucial transformation of the United States from an industrial to a post-industrial economy, with a particular focus on the shifting skill levels and incomes of American workers. It shows the increasing value of postsecondary education in today's economy and examines how workers have fared as the nation's focus has shifted from manufacturing to the delivery of services like healthcare, education, and finance and business services. Included in the report is the appendix: Sources and Methods.