Jerry Birnbach & Associates

When it comes to winning a premises liability case, especially those involving injuries in retail environments, the strength of your case rests largely on the quality and completeness of your evidence. As a retail safety expert witness, I’ve seen firsthand how even solid legal arguments can fall flat without the right documentation and investigative groundwork.

Whether the incident occurred in a big-box store, restaurant, grocery store, hotel, or even a parking lot, certain pieces of evidence consistently make or break a case.

Here are the five most essential types of evidence injury attorneys should prioritize:

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1. Surveillance Video (The Gold Standard)

If you can get your hands on surveillance footage, you’re well ahead of the game. Video evidence offers an objective view of the incident, timing, conditions, and sometimes even employee reactions. Request footage as soon as possible—many systems auto-delete within 7 to 30 days.

Tip: Footage leading up to the incident is just as important as the incident itself. It can show if a hazard was ignored or left unresolved.

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2. Maintenance and Inspection Records

Documents showing how frequently a store inspects, cleans, or repairs areas are vital. They help establish whether reasonable care was taken. These records can reveal patterns of neglect or even falsified compliance—a red flag I often help identify during case reviews.

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3. Employee Training Materials

Many law firms overlook this, but employee training manuals and safety protocols are critical. These materials show what employees should have done and allow experts like me to measure actual behavior against company standards and industry norms.

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4. Incident and Internal Reports

These often include employee statements and managerial reactions right after the event. While they may be biased, they still help attorneys understand how the store is framing the incident and if there are any admissions or omissions that could help your case.

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5. Store Layout, Lighting, and Product Placement

Having access to floor plans, photos of the area, and even seasonal displays can reveal safety design flaws. An expert can assess whether customer flow, aisle width, or merchandising practices contributed to the incident.

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Nice-to-Have Evidence (That Can Become Critical)

• Witness statements
• Weather records (especially in parking lot or entryway cases)
• Safety audits and third-party inspection results
• Prior incident logs for the location

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Collecting the right evidence early can dramatically improve your odds of success. If you’re not sure what to look for—or how to interpret what you have—that’s where I come in. I work closely with attorneys to identify negligent retail practices, expose weak safety protocols, and help juries understand how those failures lead to injury.