I think the parent comment I was replying to was more concerned about the situation where we have UBI without full automation. In which case there may be a push for jobs not yet automated to be split into part time positions. If society really feels like keeping people employed is a moral good in the face of increasing automation, then there may be pressure to increase workforce numbers and reduce working hours. Especially possible if UBI can close the gap and maintain a safety net.
In addition, full, 100% automation doesn't seem likely to me. Service sectors of the economy may simply keep smaller human staffs in order to keep their hospitality atmosphere. Not enough to offset job loss in other sectors, but there are already plenty of businesses today that have a human element that don't _actually_ need them. It might even look like a luxury business model. No reason that will go away just because robots can do it better.
In addition, full, 100% automation doesn't seem likely to me. Service sectors of the economy may simply keep smaller human staffs in order to keep their hospitality atmosphere. Not enough to offset job loss in other sectors, but there are already plenty of businesses today that have a human element that don't _actually_ need them. It might even look like a luxury business model. No reason that will go away just because robots can do it better.