I understand the
empirical economic implications of the question, but I also know the main reason I work is because I really love what I do. I want to achieve certain things and that I get paid to do that is the "bonus," if you will. Accordingly, I surmise I'd work about the same quantity of hours as I do now because I enjoy doing the work I do. It's not so much about what I get paid for doing the work; it's about getting to do the work I am of a mind to do. If it pays less, it does. If it pays more, again, it just does. That it's what I want to do is no different either way.
Think of it like this. Does a painter paint less or more often based on what they think they may get paid for the product they produce? I don't think so. My work is much the same. It's about what I produce as a final "product," not how many hours I spend producing it. It's about my enjoying doing certain things and there being people who want "something" they can't acquire on their own as efficiently/effectively as they can by engaging me to do produce those things/results for them. That creates the "win-win" situation whereby they get their desired outcome and I get to do the things I really enjoy doing.
To close, your question is an odd one in my mind. For example, how does one deal with volunteer work in this model? Volunteerism can occupy material shares of one's time/resources yet one receives no monetary compensation for it.