Subcontractor Insurance Requirements: What GCs Ask For and What Subs Should Check

Most general contractors (GCs) and project owners require subcontractors to carry general liability, workers compensation, commercial auto, and often umbrella coverage, then to attach that coverage to the GC through specific policy endorsements. The purpose is risk transfer: when a subcontractor's work injures someone or damages property, the subcontractor's insurance should pay before the GC's does. Meeting the requirement is proven with endorsements, not just a certificate of insurance.

What insurance do GCs and owners typically require from subcontractors?

A typical subcontract insurance exhibit requires general liability, workers compensation, commercial auto, and often umbrella coverage, plus endorsements that connect that coverage to the GC and owner.

• General liability, commonly at $1 million per occurrence and $2 million aggregate, with the GC and owner added as an additional insured, which extends the sub's policy to protect them for liability arising out of the sub's work.
• Additional insured status for both ongoing operations and completed operations. Ongoing operations applies while the work is underway; completed operations applies to claims that surface after the job is finished, which is where construction defect claims typically land.
• Primary and non-contributory wording, which makes the sub's policy pay first without asking the GC's insurer to share the loss.
• A waiver of subrogation on general liability and workers compensation, which stops the sub's insurer from paying a claim and then pursuing the GC to recover it.
• Workers compensation at statutory limits with employers liability coverage, even in states where small employers can legally go without it.
• Commercial auto, often at a $1 million combined single limit, including hired and non-owned vehicles.
• Umbrella or excess liability sitting above the general liability, auto, and employers liability limits, with required limits that scale with the size of the contract.
• Sometimes, a notice-of-cancellation obligation: advance warning if the sub's coverage cancels mid-project, commonly 30 days, or 10 days for nonpayment.

Why does each requirement exist?

Every item on the list moves risk down the contracting chain to the party that controls the work.

Additional insured status gives the GC direct rights

Naming the GC as an additional insured gives it a direct claim on the sub's policy instead of a promise it has to enforce in court.

Indemnity clauses only work if the sub can pay, and additional insured status puts the sub's insurer behind that promise. It also has to cover both phases of the work. Ongoing operations status generally ends when the sub's work does, while defect claims routinely arrive years after completion. If the completed operations piece is missing, the GC is unprotected exactly when construction claims are most likely. Our guide to additional insured versus certificate holder covers how the status attaches.

Primary and non-contributory wording and waivers keep insurers from fighting

These clauses decide in advance whose policy pays, so a project loss does not turn into a coverage dispute between carriers.

Without primary and non-contributory wording, the sub's insurer can argue that the GC's policy should share the claim, which drags the GC's program into a loss the contract meant to transfer away. The waiver of subrogation closes the back door: it keeps an insurer from paying a claim and then suing another project party to claw the money back, which keeps claims contained and working relationships intact.

Auto and umbrella requirements address severity

Vehicles and serious injuries produce some of the largest claims on construction programs, and primary limits alone are often not enough.

Crew trucks moving between job sites are a frequent source of major losses. A single severe injury claim can exhaust a $1 million primary limit, which is why GCs require umbrella limits that grow with contract value.

What should subcontractors check before signing?

Check whether your current program can actually deliver every item in the insurance exhibit, because signing requirements you cannot meet is a breach waiting to be discovered.

• Endorsements, not intentions. Confirm your general liability policy carries additional insured endorsements for both ongoing and completed operations, either blanket (triggered automatically by a written contract) or scheduled per project. Some contractor policies exclude completed operations additional insured status entirely.
• Wording that matches. Primary and non-contributory language and waivers of subrogation have to exist as endorsements on the policy. A certificate that recites the words does not change what the policy says.
• The cost of compliance. Higher umbrella limits, per-project aggregate endorsements, and added waivers carry premium. Price them during bidding, not after award.
• Requirements you cannot meet. Many carriers will not commit to sending cancellation notices directly to a GC. If the contract demands it, negotiate a workable substitute, such as your own written duty to notify the GC within a set number of days.

How should GCs collect and verify subcontractor COIs?

Collect certificates before a sub mobilizes, verify the endorsements behind them, and track expirations through the project and into the completed operations period.

• Treat the certificate as a claim to verify, not proof. A COI is issued for information only and confers no rights by itself; our overview of certificates of insurance explains why.
• Request copies of the actual endorsements. A checked box on a certificate means little if the endorsement was never issued on the policy.
• Compare limits and wording against the subcontract exhibit before the sub starts work, while you still have leverage.
• Diary every expiration date. Policies renew mid-project, and a certificate collected in March proves nothing about October.
• Keep the file after the job closes. Completed operations claims can arrive years later, and you will need to show which policies were in force and who held additional insured status.

What happens when a subcontractor doesn't meet the requirements?

Uninsured subcontractor losses land on the GC's own insurance program, and the damage compounds through its loss history and future pricing.

When a claim arises out of an uninsured sub's work, the injured party sues everyone on the project. With no valid tender available, the GC's own general liability typically defends and pays, the claim posts to the GC's loss runs, and renewal pricing and insurability suffer for years afterward.

Non-compliance costs money even without a claim. At premium audit, uninsured subcontractor payroll is typically charged to the GC's own policies as if those workers were employees. Some GC policies also condition coverage on collecting certificates from every sub, so it pays to read your own form's subcontractor conditions.

For subcontractors, the consequences run through the contract: withheld payment, back-charges for coverage the GC buys on your behalf, removal from bid lists, and a breach claim if a loss reveals the gap. In construction, your insurance program is a prequalification credential as much as a protection.

Where a broker fits in

The insurance exhibit is negotiable, and both sides do better when someone who reads policy forms daily reviews it before signatures. Velora Risk Partners helps GCs write subcontractor requirements they can enforce, and helps subs build programs that satisfy those requirements without overbuying. If a subcontract's insurance terms are holding up an award, reach out and we will walk through the exhibit with you.

Frequently asked questions

What insurance does a subcontractor need to work for a general contractor?

Most general contractors require subcontractors to carry general liability, commonly at $1 million per occurrence and $2 million aggregate, workers compensation at statutory limits, commercial auto, and often umbrella coverage. The contract also typically requires endorsements naming the GC as an additional insured for ongoing and completed operations, primary and non-contributory wording, and waivers of subrogation. Exact requirements vary by contract, so read the insurance exhibit before signing.

Is a certificate of insurance enough to prove a subcontractor is compliant?

No. A certificate of insurance is an informational snapshot issued by the subcontractor's broker, and it does not change or confirm the policy's actual terms. Additional insured status, primary and non-contributory wording, and waivers of subrogation only exist if endorsements are attached to the policy itself. General contractors should request copies of those endorsements along with the certificate and compare them to the subcontract's requirements.

What does primary and non-contributory mean in a subcontract?

Primary and non-contributory wording requires the subcontractor's liability policy to pay a covered claim first, without asking the general contractor's insurance to contribute. Without it, the subcontractor's insurer could argue that the GC's policy should share the loss, pulling the GC's program into a claim the contract meant to transfer. The wording has to appear in a policy endorsement, not just on the certificate of insurance.

Why do contracts require completed operations additional insured coverage?

Because many construction claims, especially defect claims, surface after the work is finished. Additional insured status for ongoing operations typically ends when the subcontractor's work is complete, so a general contractor sued years later over a sub's defective work would have no direct rights under the sub's policy. A separate completed operations endorsement extends that protection into the period after completion, which is when it is often needed most.

What happens if a general contractor uses an uninsured subcontractor?

Claims caused by an uninsured subcontractor usually end up on the general contractor's own insurance, which raises its loss history and future pricing. At premium audit, insurers also typically charge the GC for uninsured subcontractor payroll as if those workers were employees, so the gap costs money even without a claim. Some GC policies condition coverage on collecting certificates from subs, which is another reason to verify before work starts.

Can a subcontractor negotiate the insurance requirements in a contract?

Often, yes, and the time to do it is before signing. Reasonable requests include swapping a direct carrier notice-of-cancellation duty for the subcontractor's own written duty to notify, right-sizing umbrella limits to the contract, and clarifying which endorsement forms your carrier can issue. Most GCs would rather adjust an exhibit than discover after a loss that a requirement was never met. A broker can flag which terms your program already satisfies.