[floppydisk]

Does the delta between lowering the cost of labor (assuming people will work for the lower wage) cover the tax increase?

Labor, in the service industry, is already handled like a variable cost. If you expect a rush, you increase the number of people on the shift and if you don't, you schedule the bar minimum. If there's mismatch between staffing and projected work - and say schedule too many people for what turns out to be a dead shift - they get sent home. Changing the minimum wage from $9/hr to $15/hr reduces the number of people you can run per shift and keep your costs the same (assuming all other inputs continue to cost the same). I.E. It costs me $30/hr to keep two waiters when I could run 3 for $27/hr so I cut back one waiter per shift.

Where the business gets in trouble, in terms of survival, is the price of fixed inputs. They need to buy goods and services that will fluctuate in price and if the cost of doing business goes up due to higher fixed costs in the form of taxes, those costs will reverberate through the chain. The food supplier will raise prices, the restaurant will need to raise its prices to afford the food, which will impact their ability to attract customers which impacts their ability to derive revenue to pay the food supplier, their tax bill, and so forth.

Similarly, if businesses are having to charge higher prices and wages are depressed due to UBI + <other wage>, will people have the money to afford goods and services at the higher rate?