Farming is an excellent example. But the farming we know today has been subject to relentless pressures of capitalism, and it has been industrialized to support economies of scale. Mom and pop farms are vestiges of the past.

So I'm not sure your comparison holds, maybe a better analogy would be a hobby farm? Usually those involve people who have primary jobs and choose this as a lifestyle. My guess would the the farming hours in that context cannot be too many; it would interfere with their day jobs.