The short answer
Treat the certificate of insurance as a starting point, not proof. Before granting site access, confirm the named insured exactly matches the entity on the contract, that general liability, workers' compensation and any required auto or professional cover run across the whole work window, that limits meet your contract minimums, and that additional insured and waiver-of-subrogation endorsements actually exist in the policy. Then confirm the policy is active and not cancelled by contacting the broker or insurer named on the certificate. Re-verify before every access window and whenever a policy nears expiry.
Key takeaways
- A certificate of insurance is a snapshot that can go stale the moment it is printed, so verification means confirming the underlying policy is active and appropriate — not just filing the certificate.
- The named insured must exactly match the legal entity signing your contract; a trade name or parent company mismatch can void the protection you think you have.
- Require and inspect the actual additional insured and waiver-of-subrogation endorsements, because a note on a certificate does not prove the endorsement was added to the policy.
- Confirm workers' compensation independently; if a subcontractor's injured employee is not covered, the obligation can fall back on the party controlling the site.
- Re-verify at least yearly, before critical project milestones, and again when a policy is approaching its expiration date, because policies lapse, cancel and change.
- Document conditional approvals and exceptions in writing with the authorizing level of authority so the decision can be audited later.
Start with the legal entity, not the logo
The most common and most damaging gap is a name mismatch. Compare the named insured on the certificate with the legal entity that signed your contract, purchase order or access agreement, character by character. Many contractors operate through trade names, related companies or newly formed entities, and if the certificate shows one company while another actually performs the work, coverage may not respond when you need it.
When the contractor works through subcontractors, extend the same scrutiny down the chain. Ask which subcontractors will be on site, whether they carry equivalent insurance, and require certificates from each organisation that will actually enter the site rather than only from the general contractor. Confirm the stated coverage actually matches the operations performed, because a policy written for general carpentry may not cover structural framing or other higher-risk scope.
- Compare contract name, license name and named insured on every certificate
- Require certificates from each subcontractor that will physically access the site
- Check that the described operations match the actual scope of work
- Flag any mismatch or trade-name difference before discussing dates or limits
Read the certificate for what it does and does not prove
A standard certificate of insurance is issued as a matter of information only and confers no rights on the holder; it is a one-page summary of what coverage allegedly exists on the date of issue. Use it to check the basics — named insured, carrier, policy number, effective and expiration dates, limits, and the producer or broker contact — then treat those fields as hypotheses to confirm rather than as guarantees.
Verify that coverage dates span the entire length of your project or agreement, including any extension. Check that limits are plausible for the scale and risk of the work, and confirm the policy number and carrier are consistent across documents. A certificate that expires mid-job with no renewal, implausibly low limits for the project size, or an insurer that cannot be reached are red flags worth acting on before personnel walk the site.
Go beyond the certificate: policy, endorsements and exclusions
Real verification happens at the policy level. When a certificate shows your company as an additional insured, request the actual endorsement form and its edition date. Coverage for ongoing operations may not extend to completed operations, and a blanket endorsement tied only to written contracts may not deliver what your agreement requires. Ask for the specific endorsement number and compare it against your contract language rather than accepting a checkbox on a certificate.
Look at the declarations page and exclusion schedule for the work actually performed. Check whether coverage is occurrence or claims-made based, and for claims-made policies confirm the retroactive date predates any work done for you and understand what happens if the contractor changes carriers. Inspect exclusions for the specific trade: a roofing contractor may exclude certain water claims, an electrical contractor may exclude fire-related losses. Request full policy documents when the value or risk justifies it, and confirm the carrier is admitted and financially sound enough for the size of the engagement.
Workers' compensation is a separate, non-negotiable check
Jobsite injuries can become expensive very quickly, and the injured-worker risk does not always sit where you expect. Do not accept casual explanations that everyone on site is an independent contractor; in a dispute the relationship is judged by how the work actually functions, not by the label. A serious contractor should be able to produce workers' compensation coverage or a lawful basis for exemption where state law allows one.
Because coverage verification tools and requirements differ by state, confirm against the authority in your jurisdiction and keep a record of who was checked and when. If a subcontractor's employees are not covered, the exposure can shift to the party that controls the site, so treat workers' compensation as a required gate before any crew is granted access rather than a piece of paperwork to collect.
Timing, cancellation and re-verification discipline
Insurance verification is not a one-time event. Policies lapse, are cancelled, or are materially changed, and a certificate issued at the start of a project tells you nothing six months later. Industry guidance recommends rechecking proof of insurance at least yearly or before critical project milestones, with more frequent checks during high-risk phases and for new or unproven subcontractors.
Build expiry management into your process. Request updated certificates in advance of known policy expiration dates, require written notice of cancellation or material change in coverage, and do not let a crew continue on site past a policy end date without a freshly verified certificate. Keep one working file per contractor that holds the signed contract, current certificates, endorsements confirming additional insured status, broker verification notes, and any exception approvals, and retain it beyond the applicable statute of limitations because defect claims can surface years later.
Handle exceptions with conditions and an audit trail
Not every gap is a reason to stop the job, but every gap deserves a conscious, documented decision. Define authority levels by exposure: a supervisor can approve a subcontractor meeting all requirements, a deviation from defined parameters needs risk or operations leadership, and a significant gap or a financially unstable carrier should escalate to senior leadership. This keeps routine decisions moving while forcing consequential exceptions through the right channel.
When coverage falls short but work proceeds, document the specific deviation, the business justification, any compensating mitigation, and the duration of the approval. Reinforce with contractual indemnification that survives insurance deficiencies, mindful that anti-indemnity statutes in some states limit how much risk can be shifted. Store exception memos with the certificate file so the reasoning and the responsible approver can be reconstructed if the decision is later questioned.
- Define tiered approval authority based on exposure, not document count
- Require written justification and signatures for every conditional approval
- Include indemnification language that does not depend on insurance responding
- Retain certificates, endorsements and exception memos past the statute of limitations
Put it into practice
Pre-Access Insurance Verification Checklist
Work this checklist for every contractor and subcontractor before granting site access, and re-run it at each renewal, milestone or expiry. File the completed sheet with the certificate, endorsements and broker confirmation for each entity.
- Named insured on the certificate exactly matches the legal entity on the contract and access agreement
- Policy dates cover the full work window, including extensions and completed-operations exposure
- Carrier name, policy number and limits are consistent and meet your contract minimums
- Additional insured endorsement requested, received and checked for ongoing and completed operations
- Waiver of subrogation confirmed where your agreement requires it
- Workers' compensation verified (or a lawful exemption basis documented in your jurisdiction)
- Subcontractors that will access the site each have current, verified certificates
- Policy is active: broker or insurer confirms it has not been cancelled and matches the named entity
- Coverage basis (occurrence or claims-made) and retroactive date checked for claims-made policies
- Relevant exclusions for the specific trade reviewed against the declared scope of work
- Cancellation or material-change notice requirement confirmed in writing
- Date, reviewer, outcome and any exception approval recorded in the access log
Questions people ask
Why is verifying a certificate of insurance not enough?
A certificate is a summary issued as a matter of information only and can become outdated the moment it is printed; it confers no rights and does not prove the policy is active, that endorsements were added, or that exclusions do not carve out your scope. Real verification means confirming the underlying policy with the broker or insurer, inspecting endorsement forms, and reviewing exclusions.
What is the difference between additional insured status on a certificate and an actual endorsement?
A line on a certificate saying additional insured is not proof the endorsement exists. Coverage comes from the actual endorsement form added to the policy, with a specific form number and edition date that may cover only ongoing operations, only completed operations, or both. Ask for the endorsement and compare it to your contract before relying on it.
How often should I re-verify subcontractor insurance during a project?
At minimum, annually and before critical milestones, and again when any policy approaches its expiry date. For long engagements, request updated certificates before known expiration dates, and verify at project start and again if the work extends beyond the original policy period. More frequent checks are prudent for high-risk work and new subcontractors.
What should I do if a subcontractor refuses to share endorsements or policy details?
Treat the refusal as information: legitimate brokers and insurers routinely provide endorsement documentation to certificate holders with an insurable interest. Resistance often indicates the coverage does not exist as represented. Consider whether to proceed at all, and if you do, document a conditional approval with the compensating controls and the appropriate level of sign-off.
How do I handle a subcontractor with claims-made coverage instead of an occurrence policy?
Confirm the retroactive date predates any work performed for you, understand what happens if the subcontractor changes carriers or lets coverage lapse, and consider requiring extended reporting period coverage for completed-operations exposure. Document the basis and dates carefully, as claims-made policies respond differently to long-tail claims.
What if a contractor's limits are slightly below my required minimums?
You can approve the deviation conditionally if the exposure is proportionate — for example, a smaller scope of work — but the approval must be documented with the specific deviation, business justification, mitigation and duration, and signed by someone with the right authority. Do not let the exception become the norm without review.
Sources and further reading
Sources were checked when this page was generated. Confirm changing dates, rules and prices with the original publisher.
- Proactively evaluating subcontractors: a key to mitigating riskMunich Re Specialty – North America
- Hiring Uninsured Contractors Creates Unnecessary RisksMunicipal Association of South Carolina (MASC)
- How to Verify Subcontractor Insurance: 3-Layer SystemTrustLayer
- Contractor Insurance: What to Verify Before HiringJaspector
- Строительно-монтажные и другие технические рискиРосгосстрах (RGS)
- Страхование ГО при проведении строительно-монтажных работСК «Согласие»
- Статья 742. Страхование объекта строительства (ГК РФ, часть вторая)Legalacts.ru (законодательство РФ)