That sounds to me like the business owners are failing to pay competitively. If the unemployment benefits are higher than their wages, it's the wages that are the problem. Also, have you spoken to the ex-employees directly? How do you know they haven't moved on to better paying jobs and that's why they're not returning?

I've personally spoken to a regional manager for a chain that owns a number of small restaurants, and they recently faced a similar issue when the brass decided they would move all the drivers to wait-staff pay. They lost EVERY driver on staff when they saw their first check. They could make more money moving to Uber or competitors.

Pay competitively, or the market solves the problem for you. Yeah, there's gonna be the bad apple in the mix that would subsist on Unemployment benefits or UBI, but that minority isn't an argument why UBI is bad.

I don't believe in the argument around the concern that UBI can be raised so high by taxing the rich that it tips the scale. When 1% of the population controls such a high majority of the economy, at what point do you say that they're the problem, not the people on UBI?