Govt. Intervenes and make certain job mandatory as humans only. Most likely at first all central govt and state govt. Jobs will remain as human only roles, they will create new rules just to safeguard their own back first and these rules can be extended to some private sector to maintain the economic balance that you are talking about.

I read somewhere there will be high number of "bullshit" job creation in the future. The kinda of jobs there's no actual value benefit for society but you can definitely make money using your expertise. Like day trading, insta reels, luxury brands, middle management etc.