[542458]

Those are still very poorly-defined (what is "keeping people busy"? what is "useless to society"? Examples, maybe?), so it's hard to say anything about them. That said, I don't see why reducing the labor supply would eliminate jobs like those before other jobs.

[Absentinsomniac]

I'm just kinda reflecting what I read about a book called "bullshit jobs", where he gives examples like telemarketing and a lot of paper pushing admin positions. Basically anything that society as a whole wouldn't notice disappearing. I've heard criticisms like there's less bullshit jobs than he says there is, but still.

[542458]

Well, telemarketing isn't useless. It is irritating, but it does provide real value to many companies in the form of customer acquisition (also, it takes a very small number of people to do a LOT of calls, so there probably aren't very many of these). "Paper pushing admin" isn't necessarily useless either - some things are just human-intensive to document or coordinate.

In either case, I don't see anything special about these jobs that would make them the first to disappear in the face of UBI.