Quote Originally Posted by Kiwon View Post
How common is it for NFL players to get workers comp?

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Court: Ex-NFL punter eligible for workers comp

ANNAPOLIS, Md. (AP) -- Longtime-NFL punter Tom Tupa is eligible for workers compensation for a career-ending back injury he suffered while warming up for a preseason game in 2005 at FedEx Field while playing for the Washington Redskins, Maryland's highest court ruled on Wednesday. The court rejected the idea that football injuries should not be considered accidental because of the rough nature of the sport.

http://finance.yahoo.com/news/court-...132540753.html
Doesn't happen very often and the NFL is also fighting to keep cases in the home state as most NFL players play games in California where the laws are more favorable to the plaintiff. There are several measures in the CBA seeking to limit work comp exposure, but to be honest I am not sure how effective they have been.