Being older than 40 — or even 30 — can be a real liability in the tech industry, Yahoo Finance reported. That may be because of a fast-paced work environment that can shift on a dime, or because older people are frequently associated with being familiar with older technologies. The numbers show that tech is an unusually young industry. The median age for the typical US worker is 42, according to the US Bureau of Labor Statistics, but in tech, workers are frequently a decade or more younger.