The US labor market is particularly dynamic for Science, Technology, Engineering, and Math (STEM) jobs, with new technologies proliferating throughout workplaces every year. This technological change is the engine of long-run productivity growth, but it also means that workers in technology-intensive occupations must constantly learn on the job, or risk becoming obsolete.
This paper considers the consequences of technological obsolescence for workers in STEM occupations. We have three main findings. First, we look at how job skills change over time by studying the appearance of new skills and the disappearance of old skills over time. The overall rate of skill turnover is high—comparing