The labor market in the United States is undergoing substantial changes. Demand for traditional skills is declining. A large fraction of old manufacturing jobs were outsourced; and the new ones that have returned to the U.S. are often heavily automated with industrial robots and demand a new set of skills from the workers. More and more marketing jobs are so-called viral marketing based on social networks. This is a common impression we get from reading newspaper articles or listening to National Public Radio about the state of the U.S. labor market. In this project, we aim to provide systematic evidence of the changing demand of skills in the U.S. labor market.