A group of caddies have filed suit against the PGA TOUR for revenues generated by ads on their bibs:
The crux of the complaint is that the PGA Tour has unlawfully forced professional golf caddies to wear bibs bearing the logos of the PGA Tour’s sponsors. The caddies claim that the value of the bibs is approximately $50 million annually. Caddies receive none of that revenue. Importantly, the plaintiffs state that they never consented to the PGA Tour’s commercial use of their likenesses and images.
It never occurred to me that they weren’t in on the payouts. It seems pretty obvious: if you’re a human billboard, you should get paid.