> I mean, if this was true, then why do office workers generally earn more?
Because the work (1) takes particular skills, and (2) skills that are functionally gatekept so they are disproportionately found in people coming from a middle class (or, at minimum, proletarian intelligentsia) background.
It has work that is (compared to lots of more poorly paid jobs) hard to find people minimally qualified to do, but its not hard (in the sense of arduous) work, for the most part. Work being arduous doesn’t make it well-paid.
Because the work (1) takes particular skills, and (2) skills that are functionally gatekept so they are disproportionately found in people coming from a middle class (or, at minimum, proletarian intelligentsia) background.
It has work that is (compared to lots of more poorly paid jobs) hard to find people minimally qualified to do, but its not hard (in the sense of arduous) work, for the most part. Work being arduous doesn’t make it well-paid.