How Blame Is Shared Between the Owner, the Security Company and the Attacker
When an attack involves a property owner, a security company and the person who committed it, the law has to decide how responsibility is shared. Some states use comparative fault, which divides responsibility by percentage among those whose conduct contributed to the harm and adjusts recovery accordingly. Others use contributory negligence, a stricter rule that can bar recovery when the injured person bears some share of fault. No single rule applies everywhere.
Texas calls its approach proportionate responsibility, and Chapter 33 of the Texas Civil Practice and Remedies Code is one state's example. Under section 33.003, the trier of fact, meaning the jury or judge deciding the facts, determines a percentage of responsibility for each claimant, each defendant, each settling person and each designated responsible third party. A responsible third party is someone alleged to have caused or contributed to the harm, whether or not that person is a defendant. The section does not allow a question about anyone's conduct to go to the jury without sufficient evidence to support it. Put simply, each business's share is measured separately, and blame cannot be assigned to someone without evidence behind it.
The attacker can be part of that division, even if no one knows who the attacker was. Under section 33.004, a defendant can ask the court to name an unknown attacker as a responsible third party. To do so, the defendant must allege in an answer filed not later than 60 days after its original answer that an unknown person committed a criminal act that caused the injury. The court shall grant leave when the conditions the section lists are met, including that the defendant has pleaded facts showing a reasonable probability the act was criminal. That person is called "John Doe" or "Jane Doe" until identified. After adequate time for discovery, a party may move to strike a designation, and the court shall grant it unless a defendant produces enough evidence to raise a genuine issue of fact about that person's responsibility. For an injured person, this means a security company may try to place part of the blame on the attacker, but only under these conditions.
The percentages carry consequences in Texas. Section 33.001 bars a claimant whose own percentage is greater than 50 percent. Section 33.012 reduces recovery by the claimant's own percentage and by the sum of any settlements. Section 33.015 addresses what happens between the businesses afterward: a jointly and severally liable defendant that pays more than its share has a right of contribution against the others. In everyday terms, that last rule mostly settles accounts among the companies rather than with the injured person. The chapter does not apply to some actions, including a claim for exemplary damages.
A share of blame assigned to the attacker, to the injured person, or to another business can change what any one company may owe. Other states' frameworks may look nothing like this one, and an attorney can help explain how fault would be weighed under the governing state's rules.