Australia already has this - you can earn up to (somewhere around) $18k per year and you won't get taxed. This applies to everyone. Is this what you're talking about? Because as far as I can see, there are still people under the poverty line here.
But if you're not talking about that, and you're saying that ALL should get $18k (for example) no questions asked, when someone earned $19k before UBI, do they now do the same hours for $1k, or do they keep their whole $19k? If the former, why bother working, but if the latter, you've now just given them $36k not $18k.
These are all just talking points.
> The evidence does not suggest an average worker will drop out of the labor force
That's for the average worker. Show me what happens at the lower scale. Sorry, I'm not going to read a 25 page report right now, but as this does interest me, I am going to put this in my TOREAD list - genuinely, thanks for the link.
Edit: if you want evidence of disincentivising workers when there's no-questions-asked government handouts, look at food aid programs in Africa. There's no point to be a farmer when Free is your competition.
https://cals.arizona.edu/classes/arec514/groupproject/does%2...
Ok, that's fair. So the average income earner won't stop working. But what about the bottom end of the spectrum i.e someone just above UBI but who has to get up early and travel two hours each way to get to work, or who is just working to put food on the table - with UBI they now have a great reason to stay home.
So... what happens if a good chunk of people earning just above UBI rates just stops working because it's just not worth the ROI. You've ended up creating a vacuum which has to be filled. And how do you fill it? Traditionally you either import cheap labor or raise pay to incentivise applicants. Congratulations, you've just started the inflation engine.