In jobs where people get paid hourly and have access to overtime, they compete with each other to get those extra hours.
Revealed preferences say they want the money more than the time.
You are omitting the large swath of government and civil-service type employees - cops, firefighters, transit workers, utility field workers - whose base salary alone avoids "struggling to make ends meet", but they still want that overtime because time and a half or doubletime at their income level is quite lucrative, plus it helps to spike their eventual pension amount (although lawmakers are slowly wising up to that and cutting off the opportunities for new hires, although they can't change the deals the current workers already negotiated).
I probably wouldn't compete for overtime at my job, but when I was working as a consultant I would because double consultant wages is a big thing, also because consulting means that one should increase intake during times of employment because you may have times when you have no intake at all.