I find it funny that the author states that "the ruling class" essentially decides to keep people busy. Let's not forget that there are other factors at play here: unions are the first one that come to mind. Any union shop is going to have a major problem on their hands the day they decide to cut one job (not saying it's right or wrong, just that unions defend their jobs rigorously, as they should). Unions typically aren't what I think of when I think "ruling class".
However, I do tend to think of politicians as that "ruling class". And for better or for worse, people love to hear the phrase "job creation". Politicians can't "create" jobs in the same way that private companies can. They can certainly foster an environment wherein companies can flourish (and ruin it). But any politically-created job is either an oversight job (finance industry is littered with jobs that should be automated but in the interest of being able to point fingers at people, exist) or a bureaucratic job (in my opinion).