Colorado's E-Mod Reserve Fix: Lessons for Southeast Contractors
Colorado is the first state to give employers the right to force e-mod corrections when claims close below reserves. You don't have to wait for your state to catch up.
Colorado SB 26-175 requires insurers to revise an employer's e-mod when a claim closes below its reserved amount, provided the correction would reduce the mod by at least 0.05 or bring it to 1.00 or below (Colorado SB 26-175, May 2026). Southeast contractors in NCCI states can already request the same corrections through existing rating plan mechanisms. The difference is no statute compels the carrier to act. A mod audit fills that gap.
Colorado just passed the first state law giving employers an explicit right to force e-mod corrections when claims close below reserves. SB 26-175 cleared the Senate 35 to 0 and the House 63 to 2 (Colorado General Assembly, May 2026). Every contractor in the Southeast should pay attention. Not because the law applies to them, but because it puts a name on a problem most of them are already paying for.
The reserve-to-mod pipeline works like this. A carrier sets a reserve on an open workers' comp claim. That number flows to NCCI (the National Council on Compensation Insurance) and enters the Experience Modification Rate (EMR, also called "the mod") formula as incurred losses. If the claim later settles for half the reserved amount, the mod doesn't automatically adjust. Someone has to request the correction, submit revised data, and push it through the rating bureau. Colorado just made that push a legal obligation.
What Colorado's e-mod reserve correction requires
The bill creates a simple trigger. When a carrier reports a claim to a rating bureau at one dollar amount and the claim later closes for less, the employer or their licensed insurance producer can request a revision. Two thresholds apply: the correction must either reduce the mod by at least 0.05 or bring it from above 1.00 to at or below 1.00 (Colorado SB 26-175, 2026).
Once notified, the carrier must instruct the rating organization to revise the mod. The rating org has 30 days to process the change. The carrier then credits the employer for any resulting premium difference during the policy period. The bill's default effective date is August 2026.
This isn't controversial. The Senate voted 35 to 0. The House voted 63 to 2. Pinnacol Assurance, Colorado's dominant workers' comp insurer, is specifically named in the statute.
The dollar cost of a single over-reserved claim
A Southeast framing contractor carries a $200,000 reserved claim on a shoulder injury. The worker returns to full duty. Medical bills total $38,000. The case settles at $45,000. But the mod still reflects $200,000, the reserve that was on the books when NCCI locked the claim's value at the valuation date.
In our reviews of construction-contractor worksheets, a gap that size routinely accounts for 8 to 15 points on the mod, depending on the employer's expected losses and the applicable split point. On a $500,000 annual base premium, 10 mod points equals $50,000 per year in excess premium. Across the three-year experience period, that's $150,000 from a single claim that actually resolved well.
The claim closed favorably. The mod never got the memo.
Severity trends widen the gap
NCCI's 2026 State of the Line reports medical claim severity up 4% and indemnity severity up 4% in 2025 (NCCI 2026 State of the Line, May 2026). That's a deceleration from the 6% growth each posted in 2024, but it's still above the long-run average. For construction, where injuries skew toward the severe end, initial reserves on new claims reflect these rising cost benchmarks.
Higher starting reserves mean a wider potential gap between what the carrier sets aside and what the claim ultimately costs. Industry-wide reserve redundancy fell to $14 billion in 2025, down from $16 billion the prior year (NCCI 2026 State of the Line). Carriers are reserving tighter than they were five years ago. But tighter isn't accurate, and the remaining gap still enters every open claim on your worksheet.
You don't need Colorado's law to do this
Here's the part that matters for contractors outside Colorado. NCCI's Experience Rating Plan (ERP) already allows corrections to unit statistical data. The mechanism for revising a claim's reported value after it closes, or after a reserve drops significantly, has existed for years. What Colorado legislated isn't a new capability. It's the carrier's obligation to act when asked.
In NCCI-administered states across the Southeast, including Alabama, Georgia, Tennessee, Mississippi, and the Carolinas, an employer or broker can request that the carrier submit corrected data to NCCI. When NCCI processes the update, the mod recalculates.
Without a statutory mandate, the request sits in a claims department queue. The adjuster has 200 other files. The correction doesn't get submitted before the next rating effective date. The contractor pays premium on a number that no longer reflects reality. Year after year.
This is what a systematic audit process addresses. Not one claim flagged on a phone call, but a complete review of every open claim in the experience period, matched against current carrier records, with corrections filed where the data supports them.
What an audit would check
An audit compares each open claim's reserved value against its current treatment status, payment history, and the carrier's own file notes. It identifies claims where the reserve hasn't tracked the claim's actual resolution. That's what Colorado had to write into statute. It's what a mod audit does as standard practice across every NCCI state.
If your mod sits above 1.00 and you have open claims in your experience window, send us your NCCI worksheet and we'll tell you whether your mod reflects your actual loss experience or someone else's estimate of it.