
Top 5 COI Mishaps That Cost Businesses Time, Money, and Trust
Certificates of Insurance (COIs) look harmless. One tidy page, a few boxes, a signature. Easy, right?
If only.
Behind that single sheet lurk details that can make or break your project. One missed date, one wrong name, or one missing endorsement — and suddenly you’re holding the bill.
The good news? Most COI mistakes are predictable. And preventable.
Here are the five most common mishaps — and how to avoid them.
Mishap #1: Taking the COI at Face Value
A COI is just the trailer. The endorsements are the full film.
That “Additional Insured” box checked on the COI? Meaningless without the actual endorsement.
Mini-Story: A national contractor once trusted the “checked box” on a COI without asking for proof. Months later, a claim arose on a jobsite that wasn’t covered under the vendor’s endorsement. The company paid hundreds of thousands of dollars out of pocket — all because they assumed the COI told the whole story.
How to Spot It:
- Always request the endorsements.
- Verify language matches contract requirements.
- Remember: no endorsement = no coverage.
👉 Want a deeper dive? What to Look for in Additional Insured Endorsements.
Mishap #2: Letting Names Slide
If the COI lists “ABC Construction” but your contract is with “ABC Construction LLC,” you may not be covered.
Think TSA: “Bobby” and “Robert” aren’t the same person on a boarding pass. Insurers are just as picky.
Mini-Story: A COI listed the insured as “Smith Roofing,” but the contract was with “Smith Roofing & Sons, Inc.” When a claim arose, the insurer denied it — wrong entity. It took months (and lawyers) to resolve what could’ve been caught in minutes.
How to Spot It:
- Cross-check insured names against contracts.
- Don’t accept “d/b/a” without clarification.
- Ask vendors to correct and reissue if mismatched.
Mishap #3: Missing Endorsements
The COI says you’re covered. The endorsement says… not for your project.
Mini-Story: A vendor’s COI listed the client as Additional Insured. The endorsement? It applied only to a different project. When a claim hit, the coverage wasn’t valid for the job at hand. The company carried the liability.
How to Spot It:
- Train your team to check for three essentials: Additional Insured, Waiver of Subrogation, and Primary & Noncontributory.
- Spot-check endorsements against contracts.
- Don’t let work start until endorsements are in hand.
👉 Resource: Must-Have Endorsements Checklist.
Mishap #4: Believing “One Size Fits All” Limits
A $1M policy on a $5M project is like bringing a pool noodle to a sword fight.
Mini-Story: A developer accepted a vendor with $1M General Liability coverage on a large construction project. When a serious injury occurred, the costs exceeded the policy by millions. The developer absorbed the difference.
How to Spot It:
- Tier requirements by vendor type and risk level.
- Use a simple risk matrix (low, medium, high).
- Review annually to align with project size.
💡 OSHA estimates workplace injuries alone cost U.S. businesses $167B annually. That’s why limits matter.
Mishap #5: File It and Forget It
Policies expire. Vendors switch carriers. Treating COIs as “one and done” is like watering a plant once and expecting it to thrive.
Mini-Story: A project manager filed vendor COIs without tracking expirations. Six months later, a major claim arose. The vendor’s policy had lapsed weeks before. The company was on the hook.
How to Spot It:
- Automate reminders for expirations.
- Use dashboards to track compliance in real time.
- Escalate only exceptions to human review.
From Mishaps to Mastery
Every mishap ripples outward:
- Financial: Uninsured claims drain budgets.
- Operational: Projects stall when corrections come late.
- Reputation: Partners lose confidence in your risk management.
But once you know the traps, you can turn them into strengths:
- COIs aren’t just trailers — you’ve got the full film.
- Expirations don’t sneak up — they’re flagged in advance.
- Policy limits match project reality.
- Names align, coverage holds.
That’s not just less risk. That’s more resilience.
📥 Next Step: Download the COI Compliance Scorecard — spot gaps in your compliance process.
Or get practical: Download the Everyday Guide to Insurance Compliance.