The New Hampshire Insurance Department approved a 2.9% reduction in voluntary workers’ compensation loss costs for policies effective January 1, 2027, the National Council on Compensation Insurance (NCCI) announced September 4, 2026. Assigned-risk rates fall 3.4%. It is the 15th consecutive annual cut. Since 2012, voluntary market loss costs in New Hampshire have declined roughly 68%, per the New Hampshire Insurance Department.
That 68% figure is the reserve risk. Not because New Hampshire is unusual, but because NCCI files loss costs using the same methodology across its member states. The 15-year sequence makes concrete what is otherwise easy to overlook: the magnitude of downward drift that self-insured expected claims ratios have absorbed by tracking the benchmark year after year.
The Signal Underneath the Headline
NCCI’s 2026 State of the Line puts the calendar year 2025 workers’ compensation combined ratio at 91%, the 12th consecutive year below 100. The accident year 2025 combined ratio is 102%. The 11-point gap is funded by prior-year favorable reserve releases. NCCI estimates those releases at $14 billion, down from $16 billion in 2024. Two consecutive years of declining redundancy, while accident-year results cross above breakeven.
Three simultaneous adverse signals arrived alongside the New Hampshire filing: lost-time claim frequency fell in 2025 at its slowest pace in years, medical severity rose 4%, and indemnity severity rose 4%. The favorable environment that drove 15 straight rate cuts rested on faster frequency improvement and contained severity. Both tailwinds have weakened.
The 15th cut is notable specifically because it arrives as the benchmark and the accident-year cost move in opposite directions for the first time since 2012. That inversion is the new fact.
Who It Affects
Self-insured employers in NCCI states whose expected claims ratio (ECR) is anchored to NCCI benchmark loss costs. That anchor has been recalibrated downward 15 consecutive times. If an actuary benchmarked the ECR to the filed loss cost annually and adjusted loading factors only modestly, the a priori selection for current accident years now reflects an environment that NCCI’s own data says no longer holds at the accident-year level.
Self-insured group programs and public entity pools that express their ECR relative to the filed loss cost level with a program-specific loading face the same exposure. A loading factor set during the favorable era, and not revisited since, may be insufficient to close the gap between the benchmark and actual accident-year cost.
The Reserve Mechanism
The ECR is the a priori expected loss ratio that anchors the Bornhuetter-Ferguson (BF) method for immature accident years. BF weights the ECR by the unreported percentage: the less claims data has emerged, the more the reserve depends on the prior expectation. For accident years 2024 and 2025, where emergence is still early, the BF indication is ECR-dominated.
A 68% decline in the NCCI benchmark, absorbed into the ECR year after year, means the a priori assumption for those young accident years reflects a cost environment that the filed rate no longer accurately describes at the accident-year level. When the prior-year reserve releases that bridge the 11-point gap continue to shrink, the calendar-year combined ratio converges toward 102%. The ECR does not follow automatically unless the actuary explicitly recalibrates it upward against emerging accident-year cost, not against the benchmark.
The NCCI AIS 2026 reserve signals piece covers the mechanics of the redundancy decline in detail. The Bornhuetter-Ferguson explainer explains how the ECR weighting shifts by accident-year maturity.
What This Means for Your Next Review
Ask your actuary three questions before the next reserve opinion:
- What is our ECR expressed as a percentage of the current NCCI filed loss cost for our top three workers’ comp classification codes, and how has that ratio changed over the last five accident years?
- Was the ECR selection anchored to the declining NCCI benchmark or derived independently from our own emerged loss experience?
- What adjustment, if any, reflects the 11-point divergence between the NCCI calendar-year and accident-year combined ratios on recent accident years?
If the ECR tracked the benchmark downward without an independent check against emerging accident-year cost, the 2024 and 2025 accident years are the most exposed: they are immature enough to be ECR-weighted yet they emerged when the benchmark and the accident-year reality first inverted. The Q2 reserve cushion analysis and the NCCI accident year gap article cover both sides of that inversion.
Sources
- Insurance Journal: New Hampshire Approves 2.9% Workers’ Compensation Rate Cut for 2027, September 4, 2026
- New Hampshire Insurance Department: 14th Consecutive Annual Rate Reduction (prior-year context)
- NCCI: 2026 State of the Line Guide
- Insurance Journal: Workers Comp Calendar Year Combined Ratio at 91; Accident Year CR 102, May 14, 2026