There will be levels to this. In the near future there will be AI industry related jobs. If you are good at prompting and know how to operate many different AI programs and functions, you could probably become an AI consultant, I bet that will be a legitimate field within the year. 20 years from now? I don't think anyone will have to work, but maybe some limited opportunities for those who still want to even if not necessary.

What I think will happen in between those timelines, is that certain industries the government will force human labor through even when it's not needed. Similar to how NJ requires gas stations to have someone pump your gas for you, the government can create other jobs that aren't actually needed by forcing human labor in certain industries. Should they do this is a different question but when things get desperate, I am almost certain this will be tested.