Several individuals or entities might be responsible for a rear-end car crash. First, the primary responsible party is the negligent driver who violated a road rule, engaged in distracted or aggressive driving, or operated their vehicle while intoxicated. Suppose the driver operated their vehicle while on the job and working within the scope of their employment. In that case, the accident victim can potentially file a claim or lawsuit against the at-fault driver's employer—or their insurance company. In that instance, the employer is vicariously liable for the negligent acts of their employee driver. In addition, you can file a claim against an employer for negligent hiring, retention, or supervision of the problem employee driver. Your lawyer can help you determine which parties are potentially responsible for your accident, involve the necessary insurance companies, and file the appropriate claims or lawsuits against them.