The truck driver can be sued in a Pennsylvania truck accident case, and his company, the company that he works for. In Pennsylvania, an employer is responsible for the negligent acts of his employee. It’s called respondent superior. It’s under the agency theory of law, and it says that if the driver is negligent, and causes you injury while working, the employer is also going to be responsible for your injuries. And that’s all of your injuries, your pain and suffering, and your economic loss as well.