When another employee or company is at-fault for a work-related injury, there may be a third party claim. This would be in addition to the workers’ compensation claim, so you could have two cases.
For example, a delivery driver injured in an auto accident would have a workers’ compensation case. In addition, they may also have a separate case against a driver that was the cause of the crash. This type of situation can become difficult with numerous legal intricacies in each claim, sometimes making it more difficult than a standard work injury case.