This is entirely not obvious to me, given that the motivation to go get a job will be less.
Given the way welfare is set up in the US right now, I'd argue, quite strongly, that the motivation to go get a job would be more, given, under many circumstances, that you have to reach upper-middle class levels of income before you reach the same standard of living achievable on welfare. (I'm a staunch libertarian, mind. UBI isn't my ideal, far from it, but it's a hell of a lot better than what we have right now.)
I strongly recommend anybody opposing the UBI on general principle grounds run a google search on "Welfare Cliff", and research exactly how terrible the existing system is. Don't let the perfect be the enemy of the better.
Yup. Much of the advocacy for UBI can be rephrased as "let's get rid of welfare cliffs!" given that mostly any sane (cliff-less) welfare system can be rephrased as a UBI plus a marginal tax/phaseout schedule. (Sometimes these are dependent on other factors like the presence of children, but you could also account for such variations in a UBI-based system if you really wanted to.)
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.