With a Pennsylvania Workers' Compensation claim, you are limited to receiving compensation for a portion of your wage loss and for your medical bills. You are typically precluded from suing your employer for these other sorts of losses you described.
You might, however, have a third-party claim against another individual or entity, like the driver you described. In these sorts of cases, other categories of damages are available to you. This all depends, of course, of the liability of that third party.
The only way to know if you have a viable third-party claim is to speak with an attorney and go over the facts in more detail. There is not enough information in your post to give you an accurate analysis.
That said, you should speak to an attorney about your workers' compensation claim anyway. Even though you are receiving payments does not mean that your claim is being handled appropriately or that the workers' compensation carrier is not going to prejudice your rights. Lawyers, like myself, who handle these sorts of claims, generally offer free consultations and do not charge hourly--only on a contingency basis.
As such, I encourage you to speak with an attorney as soon as possible regarding your issues. I would be happy to speak with you myself. Alternatively, contact your county bar association and ask for an attorney who practices in both personal injury and workers' compensation law.
Answered on Jan 06th, 2014 at 4:17 PM