Workers' compensation is the policy that pays the medical bills and replacement wages when one of your roofers gets hurt on the job. In every state but Texas, it is required by law for any business with employees. For a roofing contractor, it is also typically the largest single insurance expense — frequently larger than every other line of coverage combined.
What workers' comp covers
A standard workers' compensation policy pays for everything connected to a work-related injury or illness:
- Medical care — emergency response, hospital, surgery, follow-up, physical therapy, prescriptions. There is no copay or deductible to the injured worker.
- Lost wages — typically two-thirds of average weekly wage, paid until the worker can return to full duty or reaches maximum medical improvement.
- Disability benefits — temporary or permanent, partial or total. Calculated using a state-specific schedule.
- Death benefits — funeral expenses and ongoing payments to dependents.
- Employer's liability — protection if an employee tries to sue the company for the injury beyond what the workers' comp benefits provide.
In exchange for these "no-fault" benefits, the employee gives up the right to sue the employer in most circumstances. That trade-off is the heart of the workers' compensation system in every state.
Class code 5551 — Roofing — All Kinds
The National Council on Compensation Insurance (NCCI) is the bureau that produces the workers' comp class codes used in most US states. NCCI 5551 is the standard code for any roofing contractor. It covers shingle, metal, modified bitumen, single-ply membrane, tile, slate, and built-up roofing — both residential and commercial, both new construction and replacement.
5551 is one of the highest-rated NCCI classifications because of the inherent fall hazard. Manual rates vary by state, but they typically run from the mid-teens to over $40 per $100 of payroll. That means for every $100,000 of roofer wages on your books, your workers' comp premium is somewhere between $15,000 and $40,000 depending on the state.
A few states do not use NCCI codes. California uses WCIRB code 5552. New York uses NYCIRB code 5551 with its own state-specific rates. New Jersey uses NJCRIB. Pennsylvania uses PCRB. Delaware uses DCRB. The classifications map closely but the rate-making is local.
Office and supervisory staff are NOT class code 5551
One of the easiest premium-saving moves: any employee who never goes on a roof — front desk, office manager, salesperson who only meets clients — is typically classified under NCCI 8810 (Clerical Office Employees) at a fraction of the 5551 rate. The hard rule is that the employee must be physically separated from the operations area and never perform any roofing-related duties. If your "salesperson" sometimes climbs a ladder to take measurements, the auditor will reclassify their payroll at 5551.
The annual audit — and the subcontractor trap
Every workers' comp policy is audited at the end of the term. The carrier (or an independent audit firm hired by the carrier) reviews your actual payroll and reclassifies anyone you classified incorrectly. Then they either refund you or invoice you for the difference between estimated and actual premium.
The subcontractor mistake that produces six-figure audit bills
Here's how it happens, and we see it constantly:
- You hire a subcontractor crew to handle a stretch of work. You pay them with a 1099 at the end of the year.
- You assume that because they're a separate company, their workers' comp is their problem.
- At your audit, the auditor asks for a Certificate of Insurance from every subcontractor proving they had a valid workers' comp policy in force during the dates they worked for you.
- You don't have one. The sub never carried coverage. Or the sub carried coverage that lapsed mid-job. Or the sub had an exclusion endorsement excluding the owner — who was the only person actually doing the work.
- The auditor charges you for that subcontractor's payroll at YOUR rate, retroactively. If you paid the sub $80,000, that's roughly $20,000–$30,000 of additional workers' comp premium added to your audit bill.
- Multiply by every uninsured subcontractor for the year and you have a six-figure surprise invoice 60 days after your policy expired.
The fix is process discipline: collect a current COI from every subcontractor BEFORE they start any work, verify the policy is in force, and re-verify at every renewal. We can set up automatic certificate tracking for you.
Experience Modification (X-mod) — the multiplier
Once your business has been operating for three years and you exceed a state-specific premium threshold, you become eligible for an experience modification factor — your "X-mod." It compares your actual claim history to the average for businesses your size in your classification. An X-mod of 1.00 is average. Below 1.00 means you've had fewer or smaller claims than average, and your premium is discounted. Above 1.00 means you've had more, and your premium is loaded.
Frequency matters more than severity for the X-mod calculation. Three small $5,000 claims will hurt your mod more than one $40,000 claim — the formula penalizes claim frequency because it's a better predictor of future loss. This is why aggressive return-to-work programs and getting injured workers into modified duty quickly is so important: an open lost-time claim hurts your mod for three years.
Monopolistic states — North Dakota, Ohio, Washington, Wyoming
In four states, workers' comp can only be purchased through a state-run monopolistic fund. Private workers' comp insurance is not legally available. We can still place all of your other coverage — general liability, commercial auto, tools and equipment, bonds, umbrella — with private carriers and help coordinate the workers' comp side of the business with the state fund. Each monopolistic fund has its own rules around classification, audits, and dividend programs.
Texas — the only opt-out state
Texas is the only state where workers' compensation is fully optional for private employers. A Texas roofing contractor can elect to be a "non-subscriber" and forgo workers' comp entirely. The catch: non-subscribers lose the legal protections that workers' comp normally provides. An injured employee can sue the employer directly, and the employer loses three key common-law defenses — contributory negligence, assumption of risk, and the fellow-servant rule. Most general contractors require their subs to carry workers' comp anyway, even in Texas, so the practical effect is that almost every Texas roofer ends up buying coverage even though the state doesn't mandate it.