Subcontractor Insurance Requirements: What to Require in 2026

When a subcontractor steps onto your job site, their risk becomes your risk. If their employee gets hurt and they have no Workers' Compensation, you are on the hook. If their negligence causes property damage and they have inadequate General Liability limits, the claim flows uphill to the general contractor and then to the property owner.

Subcontractor insurance requirements are the first line of defense against downstream liability. This guide covers what to require, how much to require, and how to adjust requirements based on the trade and risk level of the work being performed.

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The Four Mandatory Coverages

Every subcontractor working on a construction or commercial real estate project should carry these four coverages. No exceptions, no waivers, no handshake agreements.

Commercial General Liability (CGL)

CGL is the foundation. It covers third-party bodily injury and property damage arising from the subcontractor's operations.

Standard requirement: $1,000,000 each occurrence / $2,000,000 general aggregate / $2,000,000 products-completed operations aggregate.

The products-completed operations aggregate is particularly important in construction. A subcontractor's defective work may not cause damage until months or years after they leave the site. The completed operations coverage responds to claims arising from finished work.

Aggregate basis: Require the CGL aggregate to apply per project rather than on a general basis. A subcontractor working on five projects simultaneously with a $2M general aggregate could exhaust that aggregate on one project, leaving no coverage for the other four. The per-project aggregate endorsement (CG 25 03) solves this by providing a separate $2M aggregate for each project.

Workers' Compensation

Standard requirement: Statutory limits, plus Employers' Liability of $1,000,000 each accident / $1,000,000 disease-each employee / $1,000,000 disease-policy limit.

Workers' Compensation is non-negotiable for any subcontractor with employees. This is the coverage that pays when a worker falls from scaffolding, inhales toxic fumes, or develops a repetitive stress injury. Without it, the injured worker will pursue a claim against the general contractor or property owner.

Sole proprietor exemptions: Some states allow sole proprietors and partners to opt out of WC. If you accept an exemption, require a signed affidavit and understand that the sole proprietor is personally absorbing all injury risk. Many general contractors do not accept WC exemptions regardless of state law — and for good reason.

Monopolistic states: Subcontractors based in Ohio, Washington, Wyoming, or North Dakota purchase WC from the state fund, which does not include Employers' Liability. Require a stop gap endorsement on their CGL policy to fill this gap.

Commercial Auto Liability

Standard requirement: $1,000,000 combined single limit, Any Auto (or Owned, Hired & Non-Owned).

Construction subcontractors drive trucks, vans, and heavy equipment to and from job sites. Auto liability covers bodily injury and property damage caused by these vehicles. Even subcontractors who claim they do not own vehicles should carry Hired and Non-Owned auto coverage — their employees drive personal vehicles to your site, and those vehicles represent an exposure.

Umbrella / Excess Liability

Standard requirement: Varies by trade and risk level (see below).

The umbrella provides the buffer that turns a $1M CGL into effective $6M+ coverage. For construction subcontractors, umbrella requirements are not optional — they are essential for high-severity trades where a single catastrophic event can exceed primary limits.

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Requirements by Trade and Risk Level

Not every subcontractor carries the same risk. An electrician working on a high-rise rewiring project poses a fundamentally different risk than a painting crew working in an unoccupied suite. Your requirements should reflect this.

High-Risk Trades

These trades involve significant injury potential, work at heights, exposure to hazardous materials, or operations that could cause catastrophic property damage.

Medium-Risk Trades

Trades involving skilled physical work with moderate injury and property damage potential.

Low-Risk Trades

Trades involving primarily cosmetic or finish work with lower injury and damage potential.

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Additional Insured and Waiver of Subrogation

Beyond the coverage types and limits, two endorsements are critical for every subcontractor relationship.

Additional Insured

Require the subcontractor to name you (the general contractor, property owner, or property manager) as an Additional Insured on their CGL and Umbrella policies. This means their insurance responds first when a claim arises from their work — protecting your loss history and your deductible.

The specific endorsement forms matter:

• CG 20 10 (Additional Insured — Owners, Lessees or Contractors — Scheduled Person or Organization): Covers ongoing operations.
• CG 20 37 (Additional Insured — Owners, Lessees or Contractors — Completed Operations): Covers claims arising after the work is finished.

Require both. Ongoing operations coverage alone leaves you unprotected once the subcontractor demobilizes. Many claims in construction — water intrusion, structural settlement, mechanical failures — manifest months or years after the work is complete.

On the ACORD 25 certificate, additional insured status may be indicated by checking the box in the CGL row, by a note in the Description of Operations section, or both. Best practice is to require specific language in the Description of Operations: "[Your Company Name] is named as Additional Insured per CG 20 10 and CG 20 37 or equivalent."

Waiver of Subrogation

Require a Waiver of Subrogation on CGL, Workers' Compensation, and Auto policies. Without this waiver, if the subcontractor's insurer pays a claim, the insurer can turn around and sue you (subrogate) to recover its costs. The waiver prevents this.

Example: A subcontractor's employee is injured when a floor opening on your job site is inadequately barricaded. The sub's WC insurer pays $300,000 in medical bills and lost wages. Without a WoS, the WC insurer can sue the general contractor for $300,000, arguing that the inadequate barricade was the GC's fault. With a WoS, the insurer waives that right.

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Common Pitfalls

Accepting COIs from the Wrong Entity

A subcontractor's parent company, holding company, or DBA may submit a COI. If the entity on the certificate does not match the entity on the subcontract, the coverage may not apply to the work being performed. Always verify that the Named Insured on the certificate matches the legal entity that signed your subcontract agreement.

Ignoring Carrier Financial Strength

A certificate from an insurer rated below A- VII by AM Best represents a material risk. If the insurer becomes insolvent, the coverage it listed on the certificate is worthless. Require all subcontractor insurance to be placed with carriers rated A- VII or better.

Not Tracking Completed Operations Expiration

The CGL policy that was in force during the subcontractor's work may expire before a completed operations claim is filed. If the subcontractor does not renew, the completed operations coverage disappears. For high-risk trades, consider requiring proof of completed operations coverage for two to three years after project completion.

Relying on Verbal Assurances

"We have insurance" is not proof of insurance. A certificate issued by the subcontractor's agent or broker is the minimum acceptable evidence. For high-value or high-risk subcontracts, consider requesting copies of the actual endorsement forms (CG 20 10, CG 20 37, WoS endorsements) rather than relying solely on the certificate.

Failing to Update Requirements

Insurance costs and availability change. Market conditions in 2026 are different from 2023. Review your subcontractor insurance requirements at least annually to ensure they reflect current industry standards, your risk tolerance, and market availability. Requiring limits that no subcontractor in your market can obtain does not reduce risk — it just drives good subcontractors away and incentivizes non-compliance.

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Building a Tiered Approach

The most effective subcontractor insurance programs use a tiered approach that matches requirements to risk. This means:

1. Classify every trade by risk level (high, medium, low).
2. Assign standard requirement sets to each tier.
3. Apply the appropriate set automatically when a subcontractor is onboarded based on their trade classification.
4. Review and adjust tier assignments annually.

This approach ensures consistency — every electrician gets the same requirements, every roofer gets the same requirements — and eliminates the ad hoc decision-making that leads to gaps and inconsistencies.

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Automate Subcontractor Compliance

Managing subcontractor insurance requirements across dozens of trades and hundreds of subs is exactly the type of repetitive, high-stakes work that benefits most from automation.

Inori lets you define requirement sets by trade and risk tier, automatically verifies every certificate against those requirements, tracks expirations, and notifies subcontractors when renewals are due — so you can focus on building, not chasing paper.

See how Inori handles subcontractor compliance