I think the mere fact that someone knows they don't need their job to survive can help them enjoy it a lot more.
Also I think a side effect of Basic Income will be greatly increased quality of jobs, because I'd imagine for a lot of jobs, making them less shitty is a lot more attractive for the cost than a higher wage.
For example, a lot of service jobs have polices of putting up with extremely obnoxious behaviour, because it marginally increases revenue at the expense of the employee's sanity, which is effectively free. But if you're not quite as desperate for a job, you're much more able to price that in, and choose to work for less at the restaurant next door, that lets you tell jerks to GTFO.
Also I think a side effect of Basic Income will be greatly increased quality of jobs, because I'd imagine for a lot of jobs, making them less shitty is a lot more attractive for the cost than a higher wage.
For example, a lot of service jobs have polices of putting up with extremely obnoxious behaviour, because it marginally increases revenue at the expense of the employee's sanity, which is effectively free. But if you're not quite as desperate for a job, you're much more able to price that in, and choose to work for less at the restaurant next door, that lets you tell jerks to GTFO.