A three-year UBI study done in Germany shows that a guaranteed monthly check increased labor market exploration and increased work satisfaction.
(www.pilotprojekt-grundeinkommen.de)
I think the problem is that there are finite resources, so under any kind of UBI like system you still need a way to track and limit the number of resources one person can recieve to ensure everyone gets a fair share, the most convenient way is some kind of monthly allotment of tokens which are inevitably money.