How Fault Is Assigned When More Than One Party Is Responsible
When a property owner and an attacker both played a part in an injury, a civil court may have to divide responsibility, and that division shapes what an injured person may recover from the property. Many states follow comparative fault, also called comparative negligence. Under it, the trier of fact, usually the jury, gives each party whose conduct contributed to the harm a percentage of responsibility. Some states instead keep contributory fault, or contributory negligence, where a plaintiff who bears any share of fault may be barred from recovery. Fault rules differ by state, and no single state's rule applies everywhere.
Texas offers one example, and it is Texas's rule only. Chapter 33 of the Texas Civil Practice and Remedies Code, Texas's proportionate responsibility chapter, covers tort cases in which a defendant, settling person or responsible third party is found responsible for a percentage of the harm. In those cases, the jury or judge assigns a whole-number percentage to each claimant, each defendant, each settling person and each responsible third party. Section 33.001 of the Texas Civil Practice and Remedies Code states that "a claimant may not recover damages if his percentage of responsibility is greater than 50 percent." If the claimant is not barred, damages are reduced by the claimant's own percentage, and a liable defendant is generally liable only for its own percentage, with joint liability in circumstances the chapter sets out. For an injured person in Texas, that means the property owner's share, not the full harm, is generally what the owner may be answerable for.
The same chapter lets a defendant file a motion for leave to designate a responsible third party, which in a negligent security case can include the attacker. The motion must be filed on or before the 60th day before trial unless the court finds good cause for a later filing. If the defendant alleges, within 60 days after its original answer, that an unknown person committed a criminal act that caused the injury, the court must grant leave to designate that unknown person when conditions in the statute are met, including that there is a reasonable probability the act was criminal. The unknown person is then called "Jane Doe" or "John Doe." Section 33.004 of the Texas Civil Practice and Remedies Code, Chapter 33 sets out the conditions for designating a responsible third party. More on Texas appears on our page about negligent security in Texas.
The attacker's share in a civil case is decided in that civil case. It does not depend on a criminal conviction. How fault is divided turns on the state's law and the facts, and which framework applies where an attack happened is a question a conversation with an attorney can address.