A good mental attitude is important. Get ALL the facts. Get the names of witnesses. Notify the company office. Be sure to make a full written report.
Minor accidents can become major accidents.
All accidents should be investigated, the cause determined and corrective action taken to prevent recurrence. I just work here. And, more often than not, one finds it hard to come up with a quick answer to that question. It is obvious though, that since safe, or unsafe, conditions, and practices, occur at the employee level, there must be a lot the employee can do about accident prevention. In fact, he has almost total control of safety procedures in your organization.