Class Codes, High Rates & What SC Roofers Can Do About It
Roofing carries some of the highest workers' comp rates in South Carolina — and for good reason. The physical demands, heights, and weather exposure create real injury risk. But not every roofer pays the same rate. In this video, we walk through the class codes that apply to roofing operations, what drives premium, and what strategies SC roofing contractors can use to control their costs.
The NCCI class codes that apply to roofing work in South Carolina and how they affect your rate
Why roofing workers' comp rates are among the highest of any trade and how risk is calculated
How your experience modification rate (e-mod) multiplies your roofing premium
The role of subcontractors and why uninsured subs create serious audit exposure for roofers
Safety programs and return-to-work policies that can reduce your roofing workers' comp costs
How the SC assigned risk plan affects roofers who can't find voluntary market coverage
Roofing class codes carry some of the highest manual rates in the NCCI system because the actuarial data reflects real injury frequency and severity. Falls from height are the leading cause of serious injury in roofing operations, and South Carolina's workers' comp system prices that risk accordingly. The base rate for a roofing class code can run anywhere from $15 to $30 or more per $100 of payroll, depending on the specific operation. That means a roofing contractor with $500,000 in payroll could face base premium in the range of $75,000 to $150,000 before any modifiers are applied. The experience modification rate then multiplies that base premium up or down based on the contractor's claims history.
Many SC roofing contractors use a mix of direct employees and subcontracted crews. This creates a critical audit exposure: if any subcontractor you paid cannot produce a valid certificate of insurance showing their own workers' comp coverage, the carrier will add those payments to your auditable payroll at your roofing class code rate. On a $200,000 payment to uninsured subs, that can mean an unexpected audit bill of $30,000 or more. The fix is straightforward but requires discipline: collect certificates of insurance from every subcontractor before work begins, verify the policy is active, and track renewal dates so you always have current documentation.
There are several levers available to SC roofing contractors who want to reduce their workers' comp burden. A documented safety program with regular toolbox talks, fall protection training, and equipment inspection protocols can improve your claims experience over time and reduce your e-mod. A return-to-work program that gets injured employees back on light duty as quickly as possible reduces claim severity and has a direct impact on your experience mod. South Carolina also offers the Drug-Free Workplace credit, which provides a 5% premium discount for carriers in the voluntary market who certify their workplace meets the program requirements. Finally, working with an agent who has access to specialty roofing markets can make a significant difference in the rate you are offered.
Roofing carries some of the highest workers' comp class code rates in South Carolina
Your e-mod multiplies your base premium — a history of claims is very expensive in roofing
Uninsured subcontractors are added to your auditable payroll at your high roofing rate
A documented safety program and return-to-work policy are the most effective cost controls
The SC Drug-Free Workplace program offers a 5% premium discount for qualifying contractors
Most roofing work in South Carolina is classified under NCCI class code 5551 (Roofing) for work on buildings. However, there are related codes depending on the nature of the work — for example, code 5545 for composition roof installation and code 5552 for sheet metal work on roofs. The correct code depends on the type of roofing performed. Misclassification — particularly placing roofers under a lower-rated code like sheet metal or general carpentry — is a common audit issue that can result in significant additional premium when corrected.
Yes, but it depends on the company's claims history and the carrier's appetite for roofing risk. Small roofing operations with clean or limited claims history can often find coverage in the voluntary market through specialty programs that target construction and trades. Roofing contractors with significant claims history, a high e-mod, or prior cancellations may find themselves in the SC assigned risk plan, which provides coverage but typically at higher rates with less flexibility. Working with a workers' comp specialist who has access to multiple markets gives you the best chance of finding voluntary coverage.
Your experience modification rate (e-mod) is a multiplier applied to your base premium. A 1.0 e-mod means you pay the standard rate. A 1.30 e-mod means you pay 30% more than the base premium — on a $100,000 base premium, that's $30,000 in additional annual cost. For roofing contractors, where base premiums are already high, a poor e-mod has an outsized financial impact. The e-mod is calculated using the most recent three full policy years of claims data, with a one-year lag. Claims from 2023, 2024, and 2025 will drive your 2026 e-mod.
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