Is upon us:
According to recent statistics, the median number of years a U.S. worker has been in his or her current job is just 4.4, down sharply since the 1970s. This decline in average job tenure is bigger than any economic cycle, bigger than any particular industry, bigger than differences in education levels, and bigger than differences in gender. (Since women are more likely to interrupt their careers for child rearing and caregiving, their average time in a job is even shorter than a man's.)
Statistically, the shortening of the job cycle has been driven by two factors. The first is a marked decline in the "long job"–that is, the traditional 20-year capstone to a career. Simultaneously, there's been an increase in "churning"– workers well into their thirties who have been at their current job for less than a year. "For some reason I don't understand, employers seem to value having long-term employees less than they used to," says Henry Farber, an economist at Princeton. Farber has been documenting the decline in job tenure in papers with titles such as "Is the Company Man an Anachronism?" (Answer: yes.)
The Dish 