Workers comp claim will never go through. He has a 0.01 chance of getting it approved. However, an assault charge +1, and a lawsuit against the attacker and the company is a win-win situation. Violence in a workplace is never allowed unless u are in the UFC:D. He should have been instantly terminated. Unsafe work environment, pain & suffering, etc.... The guy with a broken jaw is "sittin on a gold mine" at the moment if or when he files a lawsuit.