COI Requirements for Construction: GC and Subcontractor Minimums

Construction generates more insurance claims — and larger insurance claims — than virtually any other industry. A single catastrophic event on a jobsite can produce eight-figure losses: a crane collapse, a trench cave-in, a fire during hot work, a structural failure during demolition. The combination of physical hazards, multiple contractors working simultaneously, high contract values, and long-tail completed operations liability makes construction the most demanding environment for COI compliance.

This guide covers the standard insurance requirements for general contractors and subcontractors, explains how high-risk trades require elevated limits, and introduces the wrap-up programs (OCIP and CCIP) that change the insurance landscape on large projects.

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General Contractor Requirements

The general contractor is the prime contractor on a construction project. They are contractually responsible for the entire scope of work, including work performed by subcontractors. This dual exposure — their own operations plus vicarious liability for every sub on the job — drives the most comprehensive insurance requirements in any industry.

Standard GC Minimums

Commercial General Liability: $1,000,000 per occurrence / $2,000,000 general aggregate. The CGL policy is the foundation. It covers third-party bodily injury and property damage arising from the GC's operations. On construction projects, the two critical endorsements are:

• Additional Insured — Ongoing Operations (CG 20 10 or equivalent): Names the project owner as an additional insured for claims arising from the GC's current work.
• Additional Insured — Completed Operations (CG 20 37 or equivalent): Extends additional insured status to claims arising after the work is finished. This is essential because construction defects frequently manifest months or years after completion.

Workers' Compensation: Statutory limits as required by the state where work is performed. There is no negotiation on this — it is a legal requirement in all states except Texas (where it is technically optional but practically mandatory for any contractor working on commercial projects). The waiver of subrogation endorsement on Workers' Comp prevents the carrier from suing the project owner after paying a claim for an injured worker.

Employers' Liability: $1,000,000 each accident / $1,000,000 disease — policy limit / $1,000,000 disease — each employee. These limits apply to claims that fall outside the Workers' Comp system — typically lawsuits by employees in states that allow third-party employer negligence claims.

Commercial Auto Liability: $1,000,000 combined single limit. Any GC operating vehicles on or near the jobsite needs commercial auto coverage. The policy should cover owned, hired, and non-owned autos. Additional insured status on the auto policy protects the owner if a GC vehicle causes an accident.

Umbrella / Excess Liability: $5,000,000 to $10,000,000, follow-form over GL, Auto, and Employers' Liability. The umbrella is what turns adequate coverage into sufficient coverage. On projects valued above $10 million, umbrella requirements of $10 million or more are standard. On mega-projects (above $100 million), umbrella towers of $25 million to $50 million are common.

Per-Project Aggregate Endorsement: This endorsement is often overlooked but critically important. Without it, the GC's $2,000,000 general aggregate applies across all projects. A GC working on five simultaneous projects could exhaust their aggregate on one project, leaving the other four unprotected. The per-project aggregate endorsement provides a separate $2,000,000 aggregate for each project.

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Subcontractor Requirements

Subcontractors carry the same core coverages as GCs but typically at lower umbrella limits, reflecting the smaller scope of their contracts. The base GL requirement remains the same — $1,000,000 per occurrence — because a sub's work can produce the same severity of loss as a GC's.

Standard Subcontractor Minimums

All standard provisions apply: additional insured (ongoing and completed operations), waiver of subrogation on GL and WC, and primary and non-contributory language.

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High-Risk Trade Requirements

Not all subcontractors present equal risk. A drywall installer working inside a completed structure presents a fundamentally different hazard profile than a demolition contractor bringing down a building. High-risk trades require elevated limits to reflect their elevated exposure.

Trades Requiring Enhanced Limits

Demolition: $2,000,000 per occurrence GL / $10,000,000 umbrella minimum. Demolition is the highest-risk construction trade. The potential for catastrophic property damage to adjacent structures, bodily injury from uncontrolled collapse, and environmental contamination from asbestos or lead disturbance justifies the highest limits in the industry. Some owners require $25,000,000 umbrella for demolition in urban areas with occupied adjacent buildings.

Structural Steel Erection: $2,000,000 per occurrence GL / $10,000,000 umbrella. Steel erection involves working at height with heavy materials and cranes. Falls, dropped loads, and crane incidents produce severe injuries and fatalities at rates far above the construction industry average.

Roofing: $2,000,000 per occurrence GL / $5,000,000 – $10,000,000 umbrella. Roofing combines fall exposure with fire hazard from torch-applied membranes and hot kettles. Insurance carriers price roofing GL among the most expensive construction classifications, and many standard markets will not write roofing contractors at all.

Asbestos Abatement / Lead Paint Removal: $2,000,000 per occurrence GL / $5,000,000 umbrella, plus Pollution Liability at $1,000,000 – $2,000,000. Standard CGL policies contain absolute pollution exclusions that bar coverage for asbestos and lead claims. Pollution liability is not optional for these trades — without it, there is effectively no coverage for the primary risk.

Crane Operation: $2,000,000 per occurrence GL / $10,000,000 umbrella, plus Riggers Liability and Equipment Floater appropriate to the value of the crane and lifted loads. Crane collapses are among the most catastrophic construction incidents, capable of producing losses exceeding $50 million on a single event.

Blasting / Excavation Near Structures: $2,000,000 per occurrence GL / $10,000,000 umbrella, plus Blasting Liability coverage (often excluded from standard CGL) and Vibration/Subsidence coverage if working near existing foundations.

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Flow-Down Provisions

Flow-down is the mechanism by which the owner's insurance requirements cascade from the GC down to every tier of subcontractor. The principle is straightforward: the GC is required to ensure that every sub carries insurance that protects the owner to the same extent the GC's own insurance does.

In practice, flow-down means:

1. The GC's subcontract includes insurance requirements that mirror or exceed the prime contract requirements.
2. Every sub must name both the GC and the project owner (and any other required parties) as additional insureds.
3. Every sub must provide waiver of subrogation on GL and WC.
4. Every sub must provide primary and non-contributory language, so that the sub's insurance responds first in a loss involving the sub's work.

Without flow-down, there is a coverage gap. If the GC is an additional insured under the sub's policy but the owner is not, the owner must pursue the GC's insurance to access protection against the sub's negligence. This adds a layer of complexity, delay, and potential dispute to any claim.

The compliance program must verify flow-down at every tier. If a GC cannot demonstrate that their subs carry the required insurance, the GC is in breach of the prime contract — even if the GC's own insurance is perfect.

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Wrap-Up Programs: OCIP and CCIP

On large construction projects — typically those exceeding $50 million in total cost — the traditional model of every contractor providing their own insurance is sometimes replaced by a wrap-up insurance program. These programs provide a single insurance policy that covers all (or most) contractors on the project.

Owner-Controlled Insurance Program (OCIP)

In an OCIP, the project owner purchases the insurance. The policy covers the owner, the GC, and enrolled subcontractors for GL, WC, Employers' Liability, and sometimes Excess Liability. Contractors who enroll in the OCIP are expected to deduct their insurance costs from their bids, since the owner is providing the coverage.

COI compliance under an OCIP: Enrolled contractors do not need to provide their own GL or WC certificates for the project — they are covered under the wrap-up policy. However, they must still provide certificates for coverages not included in the OCIP (typically Commercial Auto, Professional Liability, and Pollution). Contractors who are not enrolled (often those below a minimum subcontract value threshold) must provide traditional certificates meeting the full requirement set.

Contractor-Controlled Insurance Program (CCIP)

In a CCIP, the general contractor purchases the wrap-up insurance instead of the owner. The mechanics are similar to an OCIP, but the GC controls the program. CCIPs are common when a GC performs a large volume of work for a single owner or manages multiple large projects simultaneously.

COI compliance under a CCIP: The owner typically requires the GC to provide evidence of the CCIP policy and its enrollment list. The owner verifies that the CCIP meets or exceeds the project insurance requirements. Individual sub certificates are replaced by enrollment confirmations, except for non-enrolled contractors and non-wrapped coverages.

Wrap-Up Considerations for Compliance Teams

• Maintain a clear enrollment list showing which contractors are covered and which are not.
• Track OCIP/CCIP policy expiration independently — a lapse in the wrap-up policy exposes every enrolled contractor simultaneously.
• Require traditional certificates from non-enrolled contractors.
• Verify that completed operations coverage extends for the full statute of repose period.
• Ensure the wrap-up policy names all required additional insureds.

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Required Endorsements Checklist

Beyond the standard additional insured and waiver of subrogation endorsements, several construction-specific endorsements should be verified on every contractor certificate:

CG 20 10 — Additional Insured — Owners, Lessees or Contractors — Scheduled Person or Organization (Ongoing Operations): The standard form for ongoing operations additional insured status. Verify the edition date — older editions (pre-2013) provide broader coverage than newer ones.

CG 20 37 — Additional Insured — Owners, Lessees or Contractors — Completed Operations: Extends additional insured status to the completed operations period. Without this, additional insured protection ends when the contractor leaves the site.

CG 25 03 or CG 25 04 — Designated Construction Project(s) General Aggregate Limit: The per-project aggregate endorsement. Verify that your specific project is listed.

WC 00 03 13 — Waiver of Our Right to Recover from Others: The standard Workers' Comp waiver of subrogation endorsement. Verify that the schedule names the required parties.

IL 00 21 — Nuclear Energy Liability Exclusion Broad Form: This is a standard exclusion on virtually all commercial policies. Its presence is expected and does not indicate a coverage problem.

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Conclusion

Construction COI compliance is complex because construction risk is complex. The coverage requirements must reflect the actual hazards — and those hazards vary enormously depending on the trade, the project size, the location, and the specific scope of work.

The non-negotiable elements are: adequate GL with both ongoing and completed operations additional insured endorsements, statutory Workers' Comp with waiver of subrogation, commercial auto for any contractor with vehicles, and umbrella limits proportionate to the risk. Build on this foundation by adjusting for high-risk trades, enforcing flow-down to every tier of subcontractor, and understanding when wrap-up programs change the compliance landscape.