Most people depend on a job to structure their life. No jobs and a lot of free time would destabilize society.
Funny, the world seemed to operate just fine before the industrial revolution created the modern 9-5 work week.
There's literally no evidence at all for what you're claiming here. High unemployment that leads to poverty creates instability. High unemployment where people's needs are met, though... that's pretty new territory. I'm not aware of any precedent that allows us to predict the outcome.