The cybernetics pioneer Norbert Wiener wrote a book called "the human use of human beings" on this subject. Doomsters have protested about the imminent relpacement of human labour by machines for decades (if not centuries going back to the luddites), but it has never really happened.

I've worked in industrial automation for a long time, and it is true that in some industries human labour has been almost entirely replaced, but the types of work which has been automated were really things that no sane human being would want to do (things like repetitive inspection/counting/sorting). In the glass industry where I work its amaizing to think that people actually did some of the jobs now being done by robots and computers. Looking back 50-100 years, these were tasks carried out in extreme heat, vibration and noise and industrial diseases, accidents and even deaths were commonplace. Only the most deperate or insane would be able to stand working under those conditions for long periods of time.