What a Loss Run Records
A loss run is the claims history a carrier or third party administrator produces for a policy, typically covering three to five years: every claim, open or closed, along with its reserve and payout. VA Horizon’s own glossary entry on the term covers the timing question, requesting loss runs as early as possible in an x-date conversation, since no carrier seriously quotes a new business submission without current claims history in hand. That question is already settled elsewhere. This piece is about a different skill: once the loss run is actually sitting in front of a producer, what does it say about the prospect behind it.
The Two Questions a Loss Run Is Answering
NCCI, the National Council on Compensation Insurance, frames workers’ compensation claims performance on exactly two axes in its 2026 State of the Line report: frequency, how often claims happen, and severity, how much each one actually costs. The concrete industry benchmark below is workers’ comp specific, since that is where a detailed, dated figure exists, but the same two-question lens applies to reading a loss run on any commercial line. A heavy claim count against a modest total payout is a frequency story. A short claim list with one or two large payouts is a severity story, and the two point at different problems.
Reading a Frequency Story
A high claim count, even at a low total dollar amount, tends to point at a process or safety-culture issue rather than a single bad event: unsafe equipment, thin training, a location or shift with a recurring hazard. NCCI’s own 2025 data shows this can move in a business’s favor over time. Lost-time claim frequency declined 2% industry-wide in 2025, and in construction specifically, claim frequency has fallen nearly 40% since 2015, evidence that a frequency problem is often the most fixable kind of loss history a prospect can bring to a new carrier, and the easier one for a producer to talk through constructively.
Reading a Severity Story
Fewer claims with a bigger payout tell a different story: a single catastrophic incident, a specific hazard tied to one piece of equipment or one job type, or a claim that was mishandled and allowed to escalate before it closed. NCCI’s 2026 report found medical claim severity and indemnity claim severity each rose 4% in 2025, meaning the industry baseline itself is trending upward. A prospect whose own severity is rising faster than that 4% figure is a materially different, harder conversation than one tracking in line with the industry, or below it.
The Underwriting Backdrop the Story Gets Judged Against
2025 marked the 12th consecutive year the workers’ comp line’s calendar-year combined ratio measured below 100, an underwriting gain, per NCCI. The cushion behind that streak is thinning, though: the industry’s redundant reserve position fell to $14 billion in 2025, down from $16 billion in 2024, a second consecutive year of decline. A shrinking reserve cushion is context worth knowing before a loss-run conversation, not after it, since it means underwriters industry-wide have less room to be generous on a borderline account than they did two years ago.
Why the Story Is Worth More Leverage in a Softening Market
CIAB’s own Q2 2025 survey found overall commercial rates still rising, but decelerating, up 3.7% compared with 4.2% in the first quarter. A softening market means more carriers competing for the same well-underwritten accounts. A clean loss run, one with a frequency and severity trend at or below the industry’s own 2025 baseline, is worth more leverage in that kind of market than it was during the harder pricing years of 2022 through 2024, when carriers had less reason to compete aggressively for any single account. Reading the story accurately before a submission goes out is what lets a producer actually use that leverage.
What a Loss Run Cannot Tell You
A loss run is a history, not a forecast. It does not confirm whether a process fix already happened after a bad claim, whether a severity spike was a one-time event or the start of a pattern, or what a prospect’s current safety program actually looks like today. No published source ties a specific claim count or dollar threshold to a firm underwriting verdict, and this piece will not invent one. Reading frequency and severity correctly is a starting point for the conversation a producer has with the prospect, not a replacement for it.
Turning the Reading Into the Next Conversation
Knowing what a loss run says only matters if the conversation it should trigger actually happens, with the right prospect at the right time. Human + AI SDRs qualify commercial insurance prospects over real SMS conversations timed to their renewal, so a producer’s calendar fills with meetings worth pulling a loss run for in the first place.
Sources
The external data in this article draws on the sources below. Figures described in the text as estimates or industry triangulations are directional and are not attributed to a single dataset.