Yes, but that doesn't mean the work they're doing is meaningful or useful. There's been a bunch of articles about this. Most office workers are just doing "bullshit jobs": their work isn't really needed, or their productivity is horrifically low.

I firmly believe we could switch to 20-hour work weeks and see almost no drop in productivity. Most workers spend much of their time surfing the web, sitting around chatting, etc.

http://strikemag.org/bullshit-jobs/

https://www.rt.com/uk/312365-people-think-jobs-useless