There is a bit of a backlash against UBI in the economics community at the moment, which I think is unfortunately due to a lack of awareness of potential changes to the labor market coming. Here is a paper by Daniel Susskind talking about why mainstream economics may have it wrong on the labor issues:
The economic literature that explores the consequences of technological change on the labour market tends to support an optimistic view about the threat of automation. In the more recent ‘task-based’ literature, this optimism has typically relied on the existence of firm limits to the capabilities of new systems and machines. Yet these limits have often turned out to be misplaced. In this paper, rather than try to identify new limits, I build a new model based on a very simple claim – that new technologies will be able to perform more types of tasks in the future. I call this ‘task encroachment’. To explore this process, I use a new distinction between two types of capital – ‘complementing’ capital, or ’c-capital’, and ‘substituting’ capital, or ‘s-capital’. As the quantity and productivity of s-capital increases, it erodes the set of tasks in which labour is complemented by c-capital. In a static version of the model, this process drives down relative wages and the labour share of income. In a dynamic model, as s-capital is accumulated, labour is driven out the economy and wages decline to zero. In the limit, labour is fully immiserated and ‘technological unemployment’ follows.
Personally I see huge changes coming in the near to medium term (5-40 years), such by the end of that about 40% of currently employed population will have no jobs available to them. (If minimum wage laws hold, that would be literately no jobs, if minimum wage laws fall, then it means jobs that pay only sustenance level). That will cause major changes to the economy of course. Goods will be produced at much lower cost, but how will people who don’t have jobs buy them? This is where UBI begins to make sense to me.
Then in medium to long term we have the potential of AI singularity, in which case, who knows. Even if no singularity, the automation encroachment on refuge labor will continue …