06/03/2026
Most business owners are totally unaware of this hidden number until it starts costing them serious money. Think of it as a credit score for workplace safety: the Experience Modification Rate, or Mod.
When the Mod sits at 1.0, it means a business is right on par with industry averages. But once that number starts creeping above 1.0, it’s not just a statistic—it’s a surcharge added to every single dollar of a workers' comp premium. This critical metric, calculated using three years of claims data, essentially determines whether a company is being rewarded for a safe environment or penalized for accidents. Understanding how this calculation works could be the key to unlocking major savings on insurance costs.