What Laws Govern Personal Injury Cases?

Unlike other areas of the law that find their rules in statutes, personal injury law has developed mostly through a body of court decisions, and in treatises written by legal scholars.  Many states have taken steps to summarize the development of personal injury law in written statutes, but for practical purposes court decisions remain the main source of the law in any legal case arising from an accident or injury.

Sources:  https://injury.findlaw.com/accident-injury-law/personal-injury-law-the-basics.html