New technology, declining birth rates, a global labor supply slowdown, and fewer younger workers are all closely related in their effect on the US labor market and wage growth. In the coming years, high-skilled jobs in the technology industry will continue to be in high demand with not enough capable workers to fill the open spots. In the tech industry, there were 5 spots for every unemployed worker with the necessary skills in 2014. New tech can leave people behind whose jobs become obsolete but vastly increase the wage rates for those who are ahead with their skills.
See "Man set to beat machine as labor pool begins drying up globally", Rich Miller and Shobhana Chandra, August 3, 2015