I separate work under capitalism from community directed, individually motivated, anarchially organised work. Hence the first edit.
Learning is a requirement of productivity, productivity cannot exist without learning, therefore learning is productive.
I don't think people have an issue with work, they have an issue with the current state.
I feel like kj would stray into an overly technical area. Cool, yeah, but probably not what people worry about.
A sat fat / cholesterol graph might be interesting as well.