Open Question: Accident at work, worker's comp claim. OSHA involvement?

There's a situation at my work where large animals + certain equipment = injured employees. Suffice to say with a bit more design savvy, the equipment could be modified to eliminate or at least reduce these types of injures. I have suggested this to my employer when I returned to work after a month off. My injury was in December. To date, nothing has been addressed. Tell me: When does OSHA