December is one of the most challenging months for certificates of insurance. Projects are racing to finish before year-end, contracts are closing under tight deadlines, and staffing is often reduced due to holidays. Under pressure, small mistakes in COIs and contract compliance can quickly delay work, hold up payments, or even shut down projects entirely.
Understanding common year-end COI mistakes helps contractors, developers, and property owners avoid unnecessary disruptions when time matters most.
Rushed Requests Lead to Incorrect Certificates
In December, COI requests are often submitted last-minute with incomplete or unclear instructions. Missing job details, incorrect project addresses, or vague contract requirements force revisions that slow approval.
A certificate that looks “mostly right” is rarely accepted. Owners, lenders, and municipalities scrutinize every detail, especially at year-end when compliance risk is higher.
Additional Insured Language Is Frequently Wrong
One of the most common December errors is incorrect additional insured wording. Many contracts require specific ISO forms, completed operations language, or primary and non-contributory endorsements.
Submitting a COI without matching the exact contract language leads to rejection and reissuance delays. In some cases, work cannot proceed until corrected documentation is provided.
Missing or Incorrect Waivers of Subrogation
Waivers of subrogation are often overlooked or misunderstood. Contracts frequently require waivers in favor of owners, general contractors, or lenders, but the COI may reflect the waiver incorrectly or not at all.
When waivers are missing, downstream parties may refuse to release payments or approve work, creating cash flow issues at the worst possible time of year.
Policy Limits Don’t Match Contract Requirements
Year-end projects often involve tightened contract enforcement. Limits that were acceptable earlier in the year may now be reviewed more closely. Umbrella limits, auto liability, and workers compensation requirements are common areas of mismatch.
A COI showing insufficient limits—even by a small amount—can delay approval until coverage is increased or corrected.
Expired Policies and Pending Renewals Cause Delays
December renewals add another layer of complexity. Policies may be expiring, renewing, or under review while COIs are being requested. Issuing certificates during this window can be tricky if renewal terms are not finalized.
Expired policies or pending endorsements often trigger automatic rejection, even if renewal is expected. Clear communication and proactive renewal planning are essential.
Contract Language and COIs Don’t Align
A COI alone does not override the insurance requirements in a contract. Many year-end issues arise because the certificate does not reflect the actual contractual obligations.
If the contract requires completed operations, specific endorsements, or special wording, the underlying policy must support it. Certificates that do not align with contract terms create compliance gaps and risk disputes later.
Lender and Municipality Requirements Tighten in December
Municipalities, lenders, and large owners often conduct year-end compliance audits. COIs that passed earlier in the year may now be re-examined. Missing endorsements, outdated forms, or unclear descriptions are more likely to be flagged.
December is not the month to rely on assumptions or outdated templates.
Holiday Staffing Makes Corrections Slower
Holiday schedules reduce availability at agencies, carriers, and underwriting departments. What might take a day to fix in October can take a week or more in December.
Each error compounds delays, which can push projects into the new year or jeopardize contract deadlines.
How to Prevent COI Issues Before They Happen
The most effective way to avoid year-end COI problems is preparation. Reviewing contract insurance requirements in advance, confirming policy endorsements, and standardizing COI requests saves time and frustration.
Clear internal processes and early submission reduce the pressure that leads to mistakes.
Why COIs Should Never Be Treated as “Just Paperwork”
Certificates of insurance are legal representations of coverage. Errors can expose contractors and owners to uncovered losses, contractual disputes, and financial penalties.
Taking COIs seriously protects not only project timelines but also long-term risk exposure.
How Skyscraper Insurance Supports COI Compliance
Skyscraper Insurance helps clients navigate complex COI and contract requirements, especially during high-pressure year-end periods. We review contract language, confirm policy compliance, and issue certificates that align with real coverage—not assumptions.
Our proactive approach reduces delays, prevents rejections, and keeps projects moving.
Finish the Year Without Paperwork Delays
December does not have to be a COI bottleneck. With proper review and compliance checks, projects can close smoothly and confidently.
If you are facing year-end deadlines, now is the time to review your COIs and contracts before pressure turns into costly delays.

