What defines a professional?

Is it the work? Or is it the pay?

what defines a professional actor?

…”At what pay level do professionals start becoming professional?
Minimum wage. According to (Actors’)Equity, that is. ” – Kevin Delin

Or is there another marker for what makes one a professional? And more specifically, should AEA claim a different defining point?

Kevin Delin dissects this hot topic on Footlights.   Click HERE for full article.