Imagine we could automate literally every job. Even jobs that install, upgrade, and maintain the automation are automated. Any "work" that anyone wants to do is effectively unnecessary and would be considered volunteerism or someone learning and practicing new skills to expand their horizons. There's also artistic work; even if we had "creative AI" that could create music, radio, television (all completely lifelike CGI, of course), etc., there'd surely be a desire from creative people to still do this sort of work because they enjoy it.

Regardless, in this world, no one has a job and therefore no one gets paid. How do people live? Who gets what? Obviously you have to distribute "wealth" (whatever that means in this kind of society) in some manner that is independent of a person's contribution to society, since, by definition, it's not necessary to contribute to society at all. But how do you decide who gets how much? Do you just distribute the fruits of automation entirely equally among every person in the world?

Obviously we're many centuries or millennia away from this scenario, if we even ever get there without destroying ourselves in the process. But I think there needs to be some replacement for people whose jobs get automated away. Since our civilization still requires work in order to progress, I don't think we should just give those people a monthly check and say "have fun not working anymore", but at the very least we need to help these people along until they can find a new, better job. Perhaps companies that eliminate jobs due to automation should be required to pay out some portion of their new profits to employees who lost their jobs for a certain period. Think of it as extended severance pay. Some form of government assistance could also be an option after the terms of the severance pay expire, and could be funded by corporate taxes or simply a new branch of an expanded unemployment insurance program.