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UBI encourages the disinterested to leave the workforce, instead of taking a job they hate because they must have a job, and doing as little as possible, resisting change, lowering coworker's morale, and being a drag.

It frees companies to only hire people who are interested in what the company is doing and enthusiastic about it.

It frees people to do constructive, contributing things they might want to do, but which wouldn't pay enough, or which they wouldn't be able to do full time but can do part time.