It will not reduce the willingness to work but certainly will reduce the willingness of workers to suck it up for low pay, shoddy benefits, lack of holidays, no

It will not reduce the willingness to work but certainly will reduce the willingness of workers to suck it up for low pay, shoddy benefits, lack of holidays, no job security and importantly, the lack of dignity. The most recent American cash handout is the closest we have come to a large scale UBI and it does exactly what we expect humans to do - follow Maslow's pyramid.