You'd have to work out the few remaining things that
do require work from human beings, fundamentally, even to exist.
Art is one of them (speaking broadly enough to include things like music and literature). The entire value of art is that it's an expression of an artist's point of view. Recorded art is obviously on its way out, but live or commissioned art wouldn't necessarily be, and we already know how to croudsource commissioning.
Academic study would certainly be another, at least in some forms.
Interpersonal services of various forms would also be important. These might include various forms of counseling and prostitution.
There would still be a market for handmade things, if only for the status involved.
The people who owned the capital that implemented the automation would have to find a way to tell the robots what to make and how, and would likely require assistance in doing so. There's a lot of essential, un-automatable difficulty in merely expressing requirements clearly.
I'm even assuming most of the actual design and engineering (post-requirements stage) can be done by computers, though I highly suspect it cannot.
This might seem very bleak, but consider that with all this automation around, everything would become exceedingly cheap. In the past it's only been cost-effective to make a living off of, say, music with thousands or millions of fans per individual musician. Perhaps it would be possible to make a living off an audience of hundreds or maybe less since it would cost a pittance to satisfy all your basic needs.