The liable parties for your accident depend on the nature of the accident as well as the location of the accident.
For instance, if the accident occurred on-site at a private home, several parties could be held liable. Potentially liable parties include the homeowner, the contractor in charge of the site/project as a whole, a subcontractor in charge of the job site that day or in charge of a particular area of the site or project, and/or the person or people that caused the injury itself.