[dalbasal]

IDK really. Income correlates to a lot of stuff though, and that makes measuring complicated. A lot of high earning jobs are also intellectually stimulating, high status, high power, etc. Those are the jobs people may do regardless.

For his part, I believe Keynes asked (poor) people at what salary they would work less and also observed the "leisure class" of his day.

For my part, I think the "cost of thriving index" is a good starting point. For most people it's $X plus the amount needed to they buy a house, car, pay tuitions, healthcare, etc.. If you add up all these "basic" expenses, the "cost of thriving" has far outpaced official inflation and even median salary.