@danirabbit I'd also add that UBI is a huge benefit for the unmeasured economy. A huge amount of economic activity goes unmeasured by the System of National Accounts. Particularly caring, such as childcare and care of the sick and disabled.
As a concrete example, if a grandmother wants to help their daughter care for a new baby for its first year, UBI makes that affordable for the grandmother.
UBI also allows a better end-of-career. People can wind down their hours without affecting their 'pension'. This is a great help to business, which would far prefer a phase out of an experienced staff member, rather than their sudden disappearance on a magic birthday.