Those seem incompatible to me.
(UBI means Universal Basic Income, giving everyone a basic income, for free)
I completely agree and (hopefully) understand that. I only mention it as welfare because I believe that’s harder to argue against and at least gets us most of the way there.
As for working 8 hours and still making the same as you would on benefits, I see this issue today constantly in the current (US) system. Especially around people with disabilities who would otherwise be able to work.
UBI is the ideal, but replacing the complex welfare system with something cash based (similar to UBI, or exactly as UBI for certain demographics) would be a great first step.