You might "work" 2h a month, because you spend the rest of it caring for family members, or maybe you're trying to get that first draft/beta version out the door.
Or you might just not want to work.
We need to stop assigning so much worth to work. We know automation is coming, and we know that not everyone is going to be able to find work in the future.
Not the parent poster, but I'll repeat the question: what benefits do you have in mind?
I mean it as a serious question, as it's not clear to me what the difference between benefits and salary is (not being from US).
I understand that the health insurance is one of them (and, to be clear, I do believe you should have that whether you work 0 or 100 hours a month).
But what are others? Pension contribution is just a part of your salary that you are required by law to put aside. Guaranteed minimum time off comes to mind, but that obviously makes less sense if you are already not working too much. What else?