An anonymous reader writes "PBS has an article about the growth of jobs that really don't need to exist. It includes an interview with professor David Graebner, who's known for his 2013 article 'BS jobs.' The premise is simple: as technology has automated huge portions of work that used to fill the days for millions of workers, many jobs simply involve less work. How often have you sat at your desk browsing the internet instead of being productive? If your company is such that you can aggregate that lost time across a bunch of workers, you could probably reduce the headcount significantly if everybody just stayed on task all the time. But that's not even an expectation at a lot of companies. Graebner ballparks the number of effectively useless jobs at around 20%. (It's not that the individual workers are useless, just that there are, for example, 12 people doing the work of 10.) So, how about it: how much actual productivity goes into your 40-hour workweek? What about your co-workers? How many people could your company fire if everybody just paid attention all the time?"