So far, all the worker organizing books I've read have all concentrated on non-professional work (excluding nurses and teachers), but in the USA, professional jobs are seeing the same type of events. i.e., they mirror the decline of the good paying factory jobs. Worker organizing isn't done much in these types of jobs. The reason might be that the pay scale leads many to fell bad about complaining, but with salaries starting to dip into actual poverty levels, that should be changing.