General contractors workers compensation insurance pays medical bills and a portion of lost wages when an employee is injured on a job site. In most states, it is legally required the moment you hire your first W-2 employee. Rates are priced per $100 of payroll and vary sharply by trade class code, state, and your experience modification rate (EMR).
Who this is for: GC owners, project managers, and safety officers shopping workers comp for a construction firm with field crews, subcontractors, or both.
TL;DR — Key Takeaways
- Required in almost every state for any employee; Texas is the notable exception where WC is elective.
- Premiums are driven by three factors: your NCCI class code (trade risk), total payroll, and your experience mod (EMR). A 1.0 EMR is average; scores above 1.0 raise your premium dollar-for-dollar.
- Subcontractors without their own WC certificate become your exposure. Most policies allow carriers to add uninsured sub payroll to your audit.
- A waiver of subrogation endorsement is nearly always required by project owners and GCs above you — confirm your policy includes it before signing an AIA contract.
- Premium audits are mandatory. Pay estimated premium at inception; at year-end the carrier audits actual payroll and issues a credit or additional-premium bill.
Why General Contractors Pay More — and How Premiums Are Calculated
Workers comp premium for a GC is calculated using this formula:
Premium = (Payroll ÷ 100) × Class Code Rate × EMR × Schedule Modifiers
Every worker on payroll is assigned an NCCI class code (used in most states; California, Delaware, Michigan, New Jersey, New York, North Carolina, Pennsylvania, and Wisconsin use independent bureaus). The code reflects the injury risk of that job function. A project manager sitting in an office carries a much lower rate than a carpenter swinging a hammer forty feet up.
| NCCI Class Code | Job Type | Typical Rate Range (per $100 payroll)* |
|---|---|---|
| 5606 | Executive supervisor / superintendent | $2.50 – $6.00 |
| 5190 | Electrical wiring | $5.00 – $12.00 |
| 5183 | Plumbing — not otherwise classified | $5.00 – $11.00 |
| 5022 | Masonry / concrete work | $7.00 – $14.00 |
| 5645 | Carpentry — residential framing | $9.00 – $16.00 |
| 5403 | Carpentry — commercial / not otherwise classified | $10.00 – $18.00 |
| 5551 | Roofing | $18.00 – $40.00 |
| 5057 | Iron or steel erection | $22.00 – $50.00 |
*Rates vary significantly by state and carrier. These are illustrative ranges based on NCCI loss cost filings; your actual rate will differ. Request a formal quote for your state and payroll mix.
Your EMR multiplies the base premium. An EMR of 0.80 saves 20 % versus a 1.0-rated competitor bidding the same job. An EMR of 1.30 adds 30 % — and may disqualify you from certain public projects that cap EMR at 1.0 or 1.10.
What Workers Comp Covers on a Construction Site
Workers comp is a no-fault system: the employee does not need to prove the GC was negligent, and the GC cannot use contributory negligence as a defense. Coverage applies to:
- Medical and hospital expenses — emergency care, surgery, physical therapy, prescription drugs
- Lost wages / temporary disability — typically 66 2/3 % of the worker's average weekly wage, subject to state-set maximums
- Permanent disability benefits — lump-sum or structured payments for permanent impairment
- Vocational rehabilitation — retraining costs when the worker cannot return to their prior trade
- Death benefits — funeral expenses and survivor income for dependents
What workers comp does not cover: - Injuries to owners who have excluded themselves (sole proprietors, partners, and certain corporate officers may opt out) - Injuries to independent contractors — though if a sub is misclassified, the carrier may treat them as employees at audit - Third-party bodily injury suits (that exposure belongs to General Liability) - Property damage (General Liability or Inland Marine)
State Requirements and the Subcontractor Gap
Most states require workers comp for W-2 employees from the first hire. Some states set a higher threshold — for example, Alabama (5+ employees), South Carolina (4+ employees), and Georgia (3+ employees) — but the trend is toward mandatory coverage at one employee [verify state for current threshold before relying on any exemption].
Texas remains unique: workers comp is voluntary for most private employers, though many project owners and general contractors contractually require it.
The subcontractor exposure GCs miss most often:
When you hire an uninsured subcontractor and that sub's worker is injured, your policy may be called upon to cover the claim — and the sub's payroll will likely be added to your premium audit. Protect yourself by:
- Collecting a certificate of insurance (COI) from every sub before work begins.
- Verifying the COI shows an active policy with limits at least equal to your own.
- Including a contractual requirement in your subcontract that the sub name you as certificate holder and provide a waiver of subrogation.
- Checking certificate expiration dates mid-project for long-duration jobs.
How to Get Workers Comp as a General Contractor — 5 Steps
- Gather your payroll data by job function. Carriers underwrite based on payroll by class code. Separate office staff, supervisors, and field trades before your first call.
- Identify your states of operation. A policy written in one state may not automatically cover employees working temporarily in another. Confirm all states are listed on the Information Page (Part Three of the policy).
- Pull your current EMR (experience mod). If you've had workers comp for three or more years, your mod is published by NCCI or your state bureau. Know your number before quoting — carriers will find it.
- Request quotes from multiple carriers. Carriers apply schedule credits and debits differently, and appetite varies by trade and state. An independent agent can access admitted markets, E&S markets for high-hazard trades, and group captives.
- Confirm endorsements before binding. At minimum, check for: waiver of subrogation (blanket or per-project), alternate employer endorsement if you place workers through a staffing arrangement, and stop-gap coverage if you operate in monopolistic-fund states (North Dakota, Ohio, Washington, Wyoming).
Real-World Example: Mid-Size Residential GC in Texas and Colorado
Scenario (illustrative — not a guarantee of pricing):
Horizon Build LLC is a residential general contractor based in Denver, CO, with a project in Texas. The company has 12 employees: 1 owner (excluded from WC), 1 project manager/superintendent, 3 carpenters, 2 framers, 2 plumbers (W-2), 2 laborers, and 1 office admin.
Annual payroll breakdown: - Superintendent (5606): $95,000 - Office admin (clerical, 8810): $42,000 - Carpenters + framers (5645): $310,000 - Plumbers (5183): $180,000 - Laborers (5651): $140,000
Total insured payroll: ~$767,000
With a Colorado EMR of 0.92 (slightly better than average due to a solid safety record) and blended effective rates across codes, the estimated annual premium is approximately $52,000 – $68,000. If their EMR had been 1.20 instead, the same payroll mix would run closer to $68,000 – $89,000 — a $16,000–$21,000 swing purely from past claims history.
The Texas project requires listing TX on the Information Page and verifying the carrier is admitted in Texas (or that a separate Texas policy is bound), since the project owner's contract requires WC even though coverage is otherwise elective for most private employers in Texas.
This example uses estimated NCCI-based rates for Colorado and is illustrative. Actual premiums depend on carrier, schedule modifiers, claims history, and current loss cost filings.
Frequently Asked Questions
Do I need workers comp if all my workers are 1099 subcontractors? Possibly. Labeling someone a 1099 does not automatically make them an independent contractor under workers comp law. Most states apply a multi-factor test (control over work, tools, payment method, etc.). If a sub fails the test, your carrier may reclassify them as employees at audit and charge additional premium — or worse, a claim is filed and coverage is disputed. Consult legal counsel before relying on 1099 classification as a WC shield.
What is an experience modification rate and how does it affect my premium? Your EMR (also called the "mod") compares your actual claims losses over a three-year look-back period to expected losses for a firm your size in your trade. A 1.0 is average. Below 1.0 means you've had fewer claims than expected and your premium is discounted. Above 1.0 means worse-than-expected losses and a surcharge. EMR is calculated by NCCI or your state bureau and cannot be negotiated directly — only improved through fewer and smaller claims over time.
What does "waiver of subrogation" mean and why do project owners require it? Subrogation is your insurer's right to sue a third party that caused a loss to recover what it paid. A waiver of subrogation endorsement on your WC policy means your carrier agrees not to sue the named party (e.g., the project owner or upstream GC) even if that party's negligence contributed to the injury. Project owners require it to prevent your insurer from turning a workers comp claim into a lawsuit against them.
How does the premium audit work at the end of the year? At policy inception, your carrier estimates premium based on projected payroll. At year-end (or upon policy cancellation), an auditor — in person or via mail/online — reviews your actual payroll records, 1099s, and subcontractor certificates. If actual payroll exceeded the estimate, you owe additional premium. If payroll was lower, you receive a refund. Keeping clean payroll records and current sub COIs dramatically reduces audit surprises.
Can a sole proprietor or partner get workers comp in construction? Sole proprietors, partners, and in many states single-member LLC owners are typically excluded from workers comp by default in construction. They can elect to be included (covered under the policy) for an additional premium, which is required to bid on projects that mandate coverage for all workers on site. Policies with an excluded owner and no employees — sometimes called "ghost policies" — provide a certificate showing WC coverage but pay no benefits since there are no covered employees. Some project owners and GCs no longer accept ghost policies, so confirm what the contract requires.
Is workers comp required in Texas for general contractors? Texas does not mandate workers comp for most private employers. However, many commercial project owners, municipalities, and GC contracts in Texas require WC as a condition of the work. Contractors working on public construction projects in Texas are also subject to state law requirements that effectively mandate coverage in those contexts. Operating without WC in Texas exposes you to direct employee lawsuits without the statutory protections WC would otherwise provide.
What happens if one of my workers is injured on a multi-employer job site? Under OSHA's multi-employer citation policy, multiple employers on a shared site can bear citation liability. For workers comp, the claim typically runs through the injured worker's direct employer's policy. However, if the injured worker also sues another employer on the site (a third-party action), that party's general liability — not workers comp — responds. Workers comp and GL work in tandem on active construction sites for exactly this reason.
How can I lower my workers comp premium as a GC? The most effective levers are: (1) reduce and manage claims aggressively with an early return-to-work program, which limits indemnity duration and improves your EMR over time; (2) classify workers accurately — don't mix high-rate trade workers into a lower-rate code; (3) maintain a formal safety program (some carriers offer schedule credits for documented safety practices); (4) shop multiple carriers annually through an independent agent; and (5) consider a higher deductible or large-deductible program if your payroll exceeds $1M and you have cash flow to self-fund small claims.
Why Morrow for General Contractors Workers Comp
1. Independent agency, multiple markets. Morrow is not captive to one carrier. For GC workers comp, we place policies across admitted carriers, specialty construction markets, and group captives — which means you get the right market for your trade mix and claims history, not just whatever one company offers.
2. Trade-specific underwriting knowledge. We understand NCCI class codes, multi-state Information Page requirements, and the subcontractor certificate workflow that trips up most construction firms at audit time. We help you set up the paperwork systems that prevent audit shocks.
3. Fast COI and waiver of subrogation turnaround. We know project timelines don't wait. Certificate requests and endorsement adds for new projects are handled same-day during business hours. [Morrow to confirm exact SLA and delivery method.]
4. Experience mod management. Before your EMR calculates each year, we walk you through open claims and projected mod impact so you're not surprised — and so you can make informed decisions about reserves and settlements.
5. Claims advocacy. When a serious injury happens on your site, we act as your advocate with the carrier — pushing for timely medical authorization, appropriate reserves, and return-to-work accommodation — not just a claims number to call.
Get a Workers Comp Quote for Your Construction Firm
Ready to compare carriers and rates? Get a Quote → or call [Morrow to confirm phone number] to speak with a commercial construction specialist.
Morrow (Afthonea Inc, DBA Morrow) | Licensed independent commercial P&C agency | [Morrow to confirm licensed states] | Carriers: [Morrow to confirm carrier panel] | Reviews: [Morrow to confirm review platform and rating]
Related Pages
- General Contractors Insurance — Industry Overview
- General Liability for General Contractors
- Commercial Auto Insurance for Contractors
- Builder's Risk Insurance
- What Is an Experience Modification Rate (EMR)?
- Workers Compensation Cost Guide
- Workers Compensation Insurance Overview
Author: Morrow Editorial Team, reviewed by a licensed P&C insurance broker (CPCU) specializing in commercial construction. Published: June 2026 | Last updated: June 2026
Sources: - National Council on Compensation Insurance (NCCI) — loss cost filings and class code definitions - Insurance Information Institute (III) — workers compensation overview - U.S. Bureau of Labor Statistics — construction industry injury and illness data - OSHA — multi-employer worksite citation policy - State DOI filings (Colorado, Texas, and other referenced states) - American Institute of Architects (AIA) contract insurance requirements