First, AGI is far from guaranteed, unless you count a sort of switchboard variant that calls other AIs. Odds favor AGI being developed, but it's not a slam dunk.

AGI is going to be difficult. AGSI is even tougher (artificial general super intelligence). If the latter happens, there are no career fields left. Literally.

Arguably, if an AGSI did develop (Person of Interest - Samaritan) we'd likely never know as it slowly re-engineered society.

Barring that scenario, welcome to the world of UBI and busy-work if a regular AGI comes to pass. Seriously, AGI plus any kind of robots means we won't need people to do most jobs VERY quickly.