No collar - Artists and "free spirits" who tend to privilege passion and personal growth over financial gain. This term was popularized on the reality game show Survivor: Worlds Apart, which used No Collar (in addition to White and Blue Collar) as the tribal divisions; also, people who work, but not for payment.


Designation of workers by collar color
https://en.wikipedia.org/wiki/Designation_of_workers_by_collar_color

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No-Collar Worker - The new, exponentially emerging class rising up in America consisting of often over-qualified but unemployed persons or tech-industry professionals who eschew collars altogether, No collar individuals refer to artists or a free spirit who tend to privilege passion and personal growth over financial gain. You can call yourself as having no collar when you work for the satisfaction and not for payment.


Types of Collar Workers! (updated)
https://www.linkedin.com/pulse/whats-types-collar-workers-hassan-choughari/