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Institute of WorkComp Professionals

Hidden Workers’ Comp Costs: Why Small Claims Hurt Most

Hidden Workers’ Comp Costs: Why Small Claims Hurt Most

Workers’ Comp ERA: How Claim Frequency Drives the Mod More Than Severity

Quick Takeaways

  • The Frequency Multiplier: Under NCCI’s Experience Rating Adjustment, the primary portion of every injury is weighted at 100% in the Mod calculation. This primary portion varies by state and changes each year. Values range from around $10,000 to over $30,000 depending on the state. Ten $5,000 claims produce more primary loss than one $100,000 claim, because the single large claim has only one primary loss amount, while the ten small claims produce $50,000. Frequency of claims, not severity, is the primary driver of Mod deterioration for most employers.
  • The Rule: The NCCI Experience Modification formula splits each claim into primary and excess portions at the split point. Primary losses enter the Mod at 100% of value. Excess losses are weighted at a fraction of their value based on the employer’s size. Large, infrequent claims are less damaging to the Mod than multiple smaller claims of the same total value.
  • The 70% Medical-Only Discount: In every NCCI state except for Oregon and Colorado, a claim where no indemnity check is issued, the worker receives medical care and returns to work without any lost-time wage replacement, is discounted 70% before entering the Mod calculation. A $1,000 medical-only claim contributes $300 to the Mod. The same $1,000 claim with a single lost-time indemnity check contributes $1,000 to the Mod. Keeping injured workers in productive employment eliminates the trigger for the full primary loss weight.

Workers’ comp employers who focus exclusively on preventing severe injuries, the catastrophic claims with large reserves, are addressing the wrong risk in the Mod calculation. Under NCCI’s Experience Rating formula, the Mod is more sensitive to frequent small claims than to infrequent large ones. A small cut that sends a worker home for three days costs more in Mod impact than the same cut treated at an occupational health clinic while the worker continues working, and can cost more over three years than many moderate injuries that stay in the excess loss category.

Primary vs. Excess: The Split Point

Every workers’ comp claim in the NCCI formula is split into two components:

  • Primary loss: The portion of the claim up to the split point. All claims have a primary component. A $500 claim has $500 in primary loss. A $50,000 claim has the primary loss amount for that state. Primary losses enter the Mod at 100% of their value.
  • Excess loss: The portion of the claim above the split point. A $50,000 claim would have between $20,000 and $40,000 in excess loss. Excess losses are discounted by a weighting factor based on the employer’s premium size. for most mid-size employers, the weighting factor is well below 50%.

The structural effect is that claim frequency, the number of claims, contributes primary loss from every claim, while a single large claim contributes only that state’s primary loss figure regardless of how large the total claim is. For Mod purposes, the ten-claim employer is penalized more heavily per dollar spent than the single catastrophic claim employer.

The 70% Medical-Only Discount in Practice

The medical-only discount changes the calculus for minor injuries handled without lost-time indemnity. Under NCCI rules, a claim where no indemnity (wage replacement) check is issued is classified as medical-only and entered into the Mod at 30% of its value. The 70% discount applies to the claim’s full primary loss component.

The discount is triggered by whether an indemnity check is issued, not by the severity of the injury or the amount of medical cost. A worker who receives three stitches and goes home on modified duty while drawing their regular wage has not triggered an indemnity payment. A worker who receives three stitches and is told to stay home for two days receives an indemnity check for those two days, and the claim converts from medical-only to lost-time, losing the 70% discount.

The practical management implication is that any injury involving temporary restricted duty, where the employer can place the worker in a modified role that does not require a wage reduction, preserves the medical-only classification. The modified duty assignment eliminates the lost-time trigger regardless of whether the injury is minor or moderate.

Frequently Asked Questions

Does the 70% medical-only discount apply in all states?

The medical-only discount applies in NCCI states that use the NCCI Experience Rating Plan, which includes the majority of U.S. states. Some states have their own rating bureaus with different rules. Employers in monopolistic states (Ohio, Washington, Wyoming, North Dakota) and states with independent rating systems (California, Pennsylvania, New York, Delaware, Massachusetts) can not take advantage of this rule.

What is the current split point?

The NCCI split point, the threshold at which primary loss transitions to excess loss, has been increasing over recent years and varies from state to state.  Employers whose agents have not explained the current split point in their state may be underestimating the primary loss component of their open claims.

Can an employer pay medical bills directly to keep a minor claim off the loss run?

Paying medical bills directly, outside the workers’ comp policy, creates significant legal exposure. If the injury is compensable under the state’s workers’ comp act, the employer is obligated to process it through the carrier. The modified duty program is the proper mechanism for preserving the medical-only classification, not out-of-pocket payment.

Address Claim Frequency First

The Mod sensitivity to claim frequency over severity means that the most effective Mod management programs focus on converting lost-time claims to medical-only through modified duty placement, not on preventing the occasional severe claim. An employer with ten minor injuries per year and no modified duty program will sustain more Mod damage than an employer with the same injury rate and a functioning return-to-work protocol that keeps injured workers in productive roles throughout their recovery.

Agents who help employers build modified duty programs and manage the medical-only classification can find resources at WorkCompProfessionals.com. Employers who want to understand how claim frequency affects their Experience Mod can start at ConquerCompCosts.com.