I'm already seeing it.
The company I work for has adjusted the training program to accommodate Millennials' lack of attention span and work ethic. (longer training, more voluntary days off) Despite their efforts, the retention rate has dropped to 10%. (9 out of 10 quit within a year).
HR is slowly adjusting to the trend by hiring more people for each opening, which is giving veteran employees fits because we're having to incorporate absolute idiots into our teams. Seriously, I think one guy came to work high. Another wanted a bonus for making it to work an entire week. Still, another girl asked how long were they going take taxes out of her paycheck.