Guide
Workers' compensation insurance for contractors — costs, carriers, and state rules
Published
Workers' compensation insurance for contractors covers employee medical bills, lost wages, and disability benefits for on-the-job injuries, and is legally required for any shop with employees in every US state except Texas. Typical 2026 premiums run $1,800–$3,400/year for a 5-tech HVAC or plumbing shop and $4,500–$9,800/year for a 5-tech roofing crew (verified April 2026 via published rates from NEXT Insurance, The Hartford, Travelers, state-specific NCCI rate filings, and WCIRB California 2026 pure premium bulletins). Roofing, commercial electrical, and excavation carry the highest rates; HVAC service and plumbing run in the middle; office-only contractor payroll runs cheapest.
This guide covers what workers' comp actually pays, the NCCI class codes that drive your premium, state-by-state rate variation, and the carriers that write small-contractor policies in 2026.
What workers' comp covers
Workers' compensation is a no-fault insurance system. Regardless of who's at fault for a workplace injury, the employee receives:
Medical benefits. All reasonable medical care related to the injury — ER visit, surgery, physical therapy, prescriptions, prosthetics — at 100% with no out-of-pocket cost to the employee. No deductible, no copay.
Lost-wage replacement. Temporary total disability benefits usually pay two-thirds of the employee's average weekly wage, tax-free, capped at the state's maximum weekly benefit. Most states start benefits after a 3–7 day waiting period.
Permanent disability. If the injury results in permanent impairment, a scheduled or scheduled-plus-functional award pays a lump sum or long-term benefit based on the body part affected and the percent of impairment rated by a physician.
Death benefits. Burial expenses plus ongoing payments to surviving spouse and dependents.
Vocational rehab. Retraining for a different job if the employee can't return to their pre-injury occupation.
In exchange, the employee gives up the right to sue the employer for the injury (the "workers' comp bargain" or "exclusive remedy" doctrine). This protects contractors from unlimited lawsuit exposure on employee injuries.
Who needs it
Texas. The only state where workers' comp is optional. Texas contractors who opt out (called "non-subscribers") can be sued directly by injured employees and lose common-law defenses. Most Texas contractors with employees still carry workers' comp voluntarily.
Every other state. Required as soon as you hire your first W-2 employee. Some states exempt very small employers (1–4 employees), but most require coverage starting with employee #1. Check state specifics at your state's workers' comp bureau or through NCCI.
Solo operators / 1099 contractors. Most states don't require workers' comp for solo operators with no employees. However:
- Some states (California, New York, Florida construction trades) require corporate officers and sole proprietors to carry it or formally file an exemption
- Many general contractors require their subs to carry workers' comp even if the sub is solo
- Many property management companies require it as a contractual condition
Practical answer: if you're a true solo with no employees and no subs, you can usually skip it. If you're hiring anyone — W-2 or 1099 — get a quote.
Owners and corporate officers. Treatment varies by state. Most states let owners opt in or out of their own workers' comp. Opting in costs more but covers you personally for on-the-job injuries. Opting out saves money but leaves you unprotected. Most small-shop owners opt out once they have GL insurance covering them indirectly.
How premiums are calculated
Workers' comp premium uses a three-part formula:
Premium = (Payroll ÷ 100) × Class Code Rate × Experience Modifier
- Payroll is your annual W-2 + 1099 payroll for the class code
- Class code rate is the per-$100 payroll rate assigned to your trade (NCCI-assigned in 37 states; state-specific in California, New York, Ohio, Washington, Wyoming, North Dakota, Pennsylvania, Delaware, and a few others)
- Experience modifier (mod) is your claims history adjustment. 1.00 is average. Below 1.00 = better than peer average; above 1.00 = worse. A mod of 1.25 means you pay 25% more than a shop with a 1.00 mod
Small shops under 3–4 years of claim history don't get a modifier — they pay at 1.00.
NCCI class codes by trade (April 2026)
Class codes determine your rate. The common contractor codes:
| NCCI Code | Class description | National average rate |
|---|---|---|
| 5183 | Plumbing NOC | $4.50–$7.80 per $100 payroll |
| 5190 | Electrical wiring within buildings | $3.20–$5.40 per $100 |
| 5538 | HVAC installation & service | $4.80–$7.20 per $100 |
| 5403 | Carpentry — detached one/two family | $8.50–$14.20 per $100 |
| 5445 | Wallboard installation | $9.20–$15.50 per $100 |
| 5551 | Roofing — residential | $28.50–$68.00 per $100 |
| 5552 | Roofing — commercial flat | $32.00–$78.00 per $100 |
| 5474 | Painting — residential | $7.80–$13.50 per $100 |
| 6217 | Excavation & grading | $9.20–$16.80 per $100 |
| 5480 | HVAC install — commercial | $5.80–$9.20 per $100 |
Rates verified April 2026 via state NCCI rate filings and WCIRB California 2026 pure premium bulletins. State variation is significant — Florida roofing rates run 60–80% higher than the national average; California construction trades run 20–40% higher; Midwest and Rust Belt states run 10–20% lower.
Typical premiums by shop size
Assuming $1.00 mod (average claim history) and national-average class code rates:
1-tech residential plumbing shop, $55K tech payroll:
- 5183 × $5.80 × 1.00 = $3,190/year
5-tech residential HVAC shop, $275K total tech payroll:
- 5538 × $6.00 × 1.00 = $16,500
- With dividends and small-shop discounts: $12,000–$14,500 net
5-tech residential roofing shop, $275K total roofer payroll:
- 5551 × $48.25 × 1.00 = $132,700 — which is why roofing shops burn cash on workers' comp
10-tech mixed HVAC install + service shop, $540K payroll:
- 5538 × $6.00 × 1.00 = $32,400
- With volume discounts and experience credits: $22,000–$28,000 range
The experience modifier (mod) — where the real money is
After 3–4 years of claim history, your shop gets an experience modifier. Mods range from 0.60 (exceptional safety record) to 2.50+ (terrible record, uninsurable in most voluntary markets).
How mods move:
| Claim pattern | Mod impact |
|---|---|
| Zero reported claims, 4+ years | 0.70–0.85 (significant credit) |
| One medical-only claim, $3K cost | Mod up to 1.05–1.10 |
| One lost-time claim, $25K cost | Mod up to 1.15–1.30 |
| One major claim, $150K+ | Mod up to 1.40–1.80, rated for 3 years |
| Multiple lost-time claims in 2 years | Mod 1.50+, often forced into assigned-risk pool |
The math: a 5-tech HVAC shop with a 0.80 mod pays $13,200/year. The same shop with a 1.30 mod pays $21,450. A $150K lost-time claim costs you $25,000+ over 3 years in premium increases on top of the claim itself.
This is why claim prevention and early return-to-work programs matter. A $3,000 medical-only claim costs you $3,000. The same injury rated as a $25,000 lost-time claim costs you $30,000+ in premium impact over 3 years.
Major carriers for contractor workers' comp
The Hartford. Strong small-to-mid contractor underwriting, solid claims response, competitive mod-rating appeal process. Available agent-direct and through brokers. Best for 5–50 employee operations.
Travelers. Deep trade-contractor expertise. Competitive on residential HVAC, plumbing, electrical. Tends to be slightly pricier but has industry-leading loss-control resources (on-site safety audits for larger accounts).
Berkshire Hathaway GUARD. Aggressive pricing for shops with good claim history. Fast quote turnaround for standard class codes.
Next Insurance. Online-first. Strong for 1–10 employee shops. Bundles with GL and commercial auto at 10–15% discount. Quoting takes 15–30 minutes online.
Employers Preferred Insurance Company (now Employers). Small-business focused. Good for solo + 1–3 employee shops. Online quote process.
AMTrust Financial. Niche contractor carrier. Competitive on high-hazard classes (roofing, framing). Often accepts shops with moderate mod issues.
State Fund (California, New York, Montana, a few others). Workers-comp-only state-run insurer. Accepts everyone. Pricing competitive on clean accounts; assigned-risk premiums higher.
Assigned risk pool. If no voluntary carrier will write you, you're placed in the state-assigned residual market pool. Premiums run 20–60% higher than voluntary market. Most shops end up here after one or two bad-claim years.
How to buy it
Solo + 1–3 employee shops. Next Insurance online quote, or direct quote from Employers or Berkshire GUARD. 20–40 minute process. Bind online, certificate of insurance issued same-day.
5–20 employee shops. Work with an independent agent who can shop The Hartford, Travelers, Berkshire GUARD, and AMTrust simultaneously. Plan on 1–2 weeks from submission to quotes.
20+ employee shops or complex operations. Agent-driven, larger brokerage. Consider loss-sensitive programs (dividend plans, retrospective rating) where you share in good claims experience via year-end refunds.
How to reduce your premium
Safety program. Document your safety program: written job-hazard analyses, tailgate meetings, OSHA 10/30 training rosters, incident reporting procedures. Most carriers apply a 2–8% schedule credit for documented programs.
Return-to-work program. When an injured employee can perform light-duty (filing, inventory, training), bringing them back at modified duty cuts lost-time severity and reduces mod impact.
Claim management. Report claims within 24 hours. Use designated medical providers where state rules allow. Engage a nurse case manager on complex claims.
Deductible election. On larger accounts, accepting a $1,000–$10,000 per-claim deductible cuts premium 8–20% and keeps small claims from hitting your mod.
Dividend plans. Once you're at $15K+ annual premium, ask your carrier about dividend plans — up to 15% of premium returned at year-end for clean loss years.
Proper class code assignment. Auditors often default new accounts to the highest-risk class code. Challenge any auditor who classifies your office payroll as tech payroll, or commercial class rates on residential-only operations. Mod disputes and class-code corrections can save 10–20% immediately.
Common mistakes
1. Hiding 1099 payroll. State auditors review your 1099 list at every audit. A 1099 who didn't carry their own workers' comp usually counts as your employee for premium purposes. Underreporting leads to audit invoices in the tens of thousands.
2. Letting the mod sit wrong. Experience mods should be re-reviewed every 3 years. Mod calculation errors are common. A 1.15 mod that should be 0.95 costs a 5-tech HVAC shop $3,300/year.
3. Dropping coverage for "just a few weeks" during renewal. Any gap in coverage during which an employee is injured is a financial catastrophe. Coverage is annual; never gap.
4. Misclassifying employees as 1099 subs. State and IRS guidance is specific. A true 1099 controls their own work, owns their tools, and has multiple clients. Reclassifying W-2s as 1099s to save workers' comp is audit-flagging behavior that unravels fast.
5. Not documenting the owner's exclusion. Owners who opt out of workers' comp must file formal exclusion with the state or carrier. Owners assumed excluded who are actually included (or vice versa) create messy audits.
6. Ignoring the return-to-work economics. A 10-day lost-time claim generating $6K in indemnity vs the same injury treated as a light-duty modified-work claim generating $600 in indemnity has a 10× impact on mod — enough to justify a dedicated return-to-work coordinator on shops with 15+ field employees.
FAQ
Do solo contractors need workers' comp?
In most states, no — if you have no employees and no subs. California, New York, and Florida have specific construction-trade rules. If you hire anyone (even 1099), get a quote. Many general contractors and property managers require proof of workers' comp from any sub they engage.
What does workers' comp cost for a solo roofer?
Solo roofers with no employees don't need workers' comp in most states, but many choose to cover themselves for protection. A solo roofer opting into their own workers' comp pays $3,500–$8,500/year depending on state — roofing class codes are the highest in construction.
How fast can I get coverage?
Online-first carriers (Next Insurance, Employers, Berkshire GUARD) bind coverage same-day after online quote acceptance. Traditional agent-placed policies take 3–10 business days from submission.
Is workers' comp tax-deductible for the contractor?
Yes. Workers' compensation premium is a deductible business expense for contractors. Claim benefits received by injured employees are not taxable to the employee.
Can I just make my employees sign a waiver?
No. Workers' compensation is a state-mandated, no-waiver system. A "waiver" signed by an employee is unenforceable and creates legal exposure for the employer. Don't try.
What happens if I don't carry workers' comp and an employee is injured?
Penalties vary by state but typically include criminal charges (misdemeanor or felony depending on state), civil fines ($500–$100,000+), personal liability for the employee's medical bills and lost wages, and potentially a stop-work order that halts your operations until coverage is in place.
Can my mod really go above 1.00 on my first claim?
Not usually on first-year shops — you need 3–4 years of history for a mod. But the claim goes into your history and affects the mod once it kicks in. A significant claim on a new shop usually results in a 1.15–1.30 mod at the 3-year mark.
Related guides
- General liability insurance for contractors
- Contractor insurance basics — GL, workers comp, commercial auto
- Commercial fleet insurance for contractors
- Hiring your first service technician
Next step for hiring shops: before bringing on employee #1, get workers' comp quotes from Next Insurance, Employers, and an independent agent quoting The Hartford. Compare on premium, claim service rating, and the class codes applied. A 10% premium difference on a clean account is worth less than a carrier that handles claims cleanly; a 25%+ premium difference usually signals a class-code or mod issue worth challenging.