Here’s what happened when Iran introduced a basic income
The results surprised skeptics.
Excerpt:

The report found no evidence for the idea that people will work less under a universal income, and found that in some cases, like in the service industry, people worked more, expanding their businesses or pursuing more satisfying lines of work.

The researchers did find that young people — specifically people in their twenties — worked less, but noted that Iran never had a high level of employment among young people, and that they were likely enrolling in school with the added income.