Working stiff doesn’t matter if they make $30,000 or $300,000 or $500,000 or even a million dollars. They’re working stiffs.
They can’t stop working, if they stopped their primary work they couldn’t maintain their lifestyle.
They may be a self-employed dentist that actually does love it, but they still need to show up everyday. They may work for someone else. Even most of the people running their own business are still just working stiffs.
Working stiff, if they step off the treadmill, they’re broke in a decade.