As long as someone pays. I could see companies needing professional consumers, so there might be a permanent class of people whose job it is to shop, eat fast food, stay in hotels, go out to bars and theme parks and watch a lot of TV netflix and HBO. Like you'll get docked pay on your UBI if you stay home and don't consume, and have to spend your full UBI check every month.

Basically like Wall-E x Idiocracy x Brazil x Equilibrium x Gattaca