Article Reviewed by a licensed insurance professional: Sam Meenasian (CA dept of insurance license #0F75955).
Estimated reading time: 5 minutes
If you work as a contractor, landscaper, trades business, or any company that hires subcontractors, you’ve probably seen contract language that says things like Additional Insured and Completed Operations. These aren’t just legal buzzwords; they’re two of the most common ways project owners and GCs shift risk on a job.
The goal of this guide is to explain what these terms usually mean in real-world commercial general liability insurance, what they do and don’t do, and what you should verify before you sign a contract.
Quick takeaway:
- Additional Insured = someone else gets certain liability protection under your policy, but usually only for liability tied to your work.
- Ongoing operations and completed operations are often two separate additional insured requests (often two different endorsements).
- A certificate of insurance is not the policy—don’t rely on the COI alone to prove coverage.
What “Additional Insured” Actually Means
An Additional Insured is a person or organization added to your liability policy by endorsement, commonly a property owner, general contractor, landlord, or project manager.
The practical reason they ask for AI status is simple: if a claim alleges they’re liable because of something connected to your operations, they want the ability to tender that claim to your insurer (subject to the endorsement terms).
Important limitations (often missed)
Additional insured coverage is not unlimited and is not the same as being a named insured. Many modern Additional Insured endorsements limit coverage to liability caused, in whole or in part by your work, apply only to the extent permitted by law, and may limit the scope to what a contract requires. They also typically do not increase your policy limits.
Certificate Holder” vs “Additional Insured” (Not the Same)
A common misconception is that being listed on a COI equals being an additional insured. It doesn’t.
A COI is evidence that a policy exists, but it may not guarantee the coverage described. Construction risk and legal guidance commonly recommend requiring the actual endorsement (or endorsement schedule) because certificates can be wrong and AI endorsements are not all identical.
Practical rule: If it matters in a claim, get the endorsement, not just the certificate.
Ongoing Operations vs Completed Operations: Two Different Requests
Contracts often require AI coverage in two phases:
1) Ongoing Operations (while you’re actively working)
This is the “jobsite” phase—your crew is on site, work is in progress, and something goes wrong (e.g., property damage, slip-and-fall, etc.).
A common ISO endorsement used for ongoing operations is CG 20 10 (edition dates vary). One version (CG 20 10 10 01) specifically ties AI coverage to ongoing operations and excludes BI/PD that happens after work is complete or put to its intended use.
Please note: Some carriers may use different forms for ongoing operation.
2) Completed Operations (after you finish the job)
This is the “after-handoff” phase—your work is done, and later there’s alleged injury or damage arising from that work.
A common ISO endorsement used to add AI coverage for completed operations is CG 20 37 (again, edition dates vary). It typically grants AI status only with respect to liability arising out of your completed work and included in the products-completed operations hazard.
Please note: Some carriers may use different forms for completed operations.
Completed Operations Coverage: The Part Most Contractors Misunderstand
“Products-completed operations” is a key part of the Commercial General Liability (CGL) policy for contractors and many service businesses. It addresses third‑party bodily injury or property damage that occurs away from your premises and arises out of your completed work.
The policy-period reality (critical)
CGL is typically occurrence-based. That means the policy responds only if the injury or damage occurs during the policy period. Products-completed operations coverage does not extend the policy period. If you cancel your policy and a loss occurs later, you can have a serious gap.
Why this matters for contractors: Completed-ops claims can show up long after you’ve finished a job. Maintaining continuous coverage isn’t just good practice; it’s often the difference between “insured claim” and “uninsured problem.
What Completed Operations Usually Do NOT Do
Completed operations coverage is not a workmanship warranty. It generally addresses liability for bodily injury or property damage, but many policies and endorsements can limit coverage for:
- the cost to repair/replace your own defective work,
- certain damage types (water, mold, pollution, etc.),
- professional services/design exposures,
- or specific operations via exclusions.
The exact result depends on policy forms, endorsements, facts of loss, and state law.
Don’t Forget Limits: Your Products-Completed Ops Aggregate Matters
Even if you have completed ops, you can still have a limits problem.
CGL typically has a General Aggregate and a separate Products-Completed Operations Aggregate, and they apply differently. Products/completed-ops claims generally reduce the products completed operations aggregate, and the two aggregates apply independently.
If you do a lot of contracting work, your completed‑ops aggregate limit can be a major pressure point, especially when upstream parties are added as additional insureds.
If a client/GC requires additional insured coverage, don’t guess. Verify.
Ask your agent/broker (and confirm in writing):
- Which AI endorsements are being used (or what blanket AI endorsement applies)?
- Does AI coverage include ongoing operations and completed operations as required?
- What edition dates apply (contracts sometimes specify older versions)?
- Is AI coverage limited by contract requirements and “to the extent permitted by law”?
- Are limits impacted (AI endorsements typically don’t increase limits)?
- Are there exclusions that could gut coverage for your scope (common in construction placements)?
For subcontractors you hire:
Require their COI and the actual endorsements if the job is meaningful. Legal/risk guidance notes that certificates may not ensure the coverage they describe and recommends obtaining the endorsements themselves.
How USA Business Insurance Can Help
If you’re bidding on commercial work (or hiring subs), we can help you:
- identify what your contract is actually requiring (ongoing vs completed ops AI),
- request the right endorsements from your carrier,
- and organize the documentation so you can meet job requirements without last‑minute surprises.
