Do I have an opportunity for litigation in this matter.

I was tramatized at work after an abusive co-worker threatened me while I was working my shift. I missed one week of work after seeking medical attention as recommended by my employer. Three days after my return, I am threatened with my job for false allegations my employer accused me of. My employer would not go into detail about the pre-text. I worked for two more months before being called into the office and terminated for the alleged reasons given two months prior. My workmans comp case is still open. I am still seeking medical(Psychological) assistance. Is my former employer able to get away with this. The employment arena I was in was very unhealthy, (Mentally and Emotionally), and I have been depressed and living in fear, from the verbal abuse and violence the individual who threatened me with.