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Liability & Fault

What is Negligence Per Se?

A legal doctrine in which negligence is automatically established when the defendant violated a safety statute or regulation designed to protect the class of persons to which the plaintiff belongs.

Understanding Negligence Per Se

Under negligence per se, the plaintiff does not need to prove that the defendant failed to act as a reasonably prudent person. Instead, the violation of the statute itself establishes the breach of duty. The plaintiff must still prove causation and damages. Common examples include traffic violations, building code violations, and occupational safety regulation violations.

Examples

  • 1Driver running a red light establishes negligence per se in the resulting accident
  • 2Building owner violating fire code regulations when fire injures tenant
  • 3Employer violating OSHA safety standards leading to worker injury
Last updated: January 24, 2026
Reviewed by: Quilia Legal Content Team

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