Understanding North Carolina Workers' Compensation Experience Modifications

What Is an Experience Modification?

An experience modification (or experience rating) is a factor applied to an employer's workers' compensation premium that reflects the company's historical loss record compared to the state average. In North Carolina, the NC Department of Insurance (NCDOI) calculates this rating annually, and it directly influences the cost of coverage.

Key Components of the NC Rating Formula

The rating considers three primary elements:

• Actual losses: Claims paid and incurred during the rating period.
• Expected losses: Industry benchmarks based on payroll and classification.
• Credibility factor: Adjusts the weight of actual losses, especially for smaller employers.

These components are combined to produce a numeric modifier, typically ranging from 0.5 (significantly better than average) to 2.0 (worse than average).

How Payroll Impacts the Modifier

Payroll is the base for expected loss calculations. Accurate classification of job duties and correct reporting of total payroll ensure the expected loss figure reflects true risk. Misclassifying employees can inflate the expected loss, leading to a higher modifier.

Steps to Verify and Improve Your Modification

Employers should regularly audit the following:

• Claim data for accuracy, including dates, injury types, and settlement amounts.
• Payroll reports for correct classification codes.
• Safety program documentation that may qualify for discount programs.

Addressing discrepancies before the NCDOI's annual review can prevent unnecessary premium increases.

Where to Find Official Information

The NC Department of Insurance provides a searchable database of experience modification reports on its website. Additionally, the North Carolina Workers' Compensation Insurance Rating Bureau (NCWIRB) offers guidance on interpreting the rating and steps for appeals.

Typical Timeline and Appeal Process

Ratings are released in the spring for the prior policy year. If an employer believes the modifier is inaccurate, they can file an appeal within 30 days, supplying corrected claim or payroll records. The NCDOI will review the submission and issue a revised rating if justified.

Table: Common Modifier Ranges and Premium Impact