If you have suffered a serious injury, go to the emergency room or see a doctor right away.
It's up to your employer to file a claim with the insurance company. They cannot do that until you notify them of your injury and fill out an accident report.
If your employer denied your claim or refuses to file with the insurance company, you can still file a claim directly with the Workers' Compensation Administration
Keep a journal or detailed record of any injuries sustained, days of missed work and any medical treatments received following your injury.