It's not my definition, but an econo-bs definition that involves aggregating $ value output, hours worked. So any study that discusses productivity will always

It's not my definition, but an econo-bs definition that involves aggregating $ value output, hours worked. So any study that discusses productivity will always find, at least over any short period, that hours are inverse to productivity as they cannot move in perfect lockstep. However, as an individual, your experience may (and probably should) vary quite a bit from what you might predict in the aggregate!