Certificate of Insurance for Steel Erectors
A certificate of insurance for a steel erector is the ACORD 25 summary document that confirms active general liability, workers compensation, commercial auto, and umbrella coverage to a general contractor, project owner, or certifying body before work begins. It lists policy numbers, effective dates, coverage limits, and any additional insured designations. The document itself transfers no coverage — it is proof that the policy behind it exists.
What Is a Certificate of Insurance for Steel Erectors?
Steel erectors operate in a compliance-intensive environment where the COI is often the single gating document between award and mobilization. General contractors require it before a steel crew sets foot on a job site. Project owners require it for subcontractor approval. The American Institute of Steel Construction (AISC) requires it as part of the Certified Steel Erector program. And some surety companies review COI compliance as part of bond underwriting for structural steel subcontractors.
Most COIs for steel erection work use the ACORD 25 — Certificate of Liability Insurance. The form lists the named insured’s business name and address, the insurer name and NAIC number for each coverage line, policy numbers, effective dates, and coverage limits. ACORD 25 forms include a disclaimer that the certificate confers no rights on the certificate holder — it is not an insurance policy, it is a snapshot.
ACORD 25 Fields That Matter for Steel Erection Compliance
Several ACORD 25 fields generate compliance questions specifically in the steel erection context:
GCs often require specific language here, such as “Steel erection operations at [project address]” or “Additional insured status applies per written contract.” Blanket AI language belongs in this box when no separate endorsement page is attached.
Steel erection GC requirements specify both. Confirm the per-occurrence and aggregate limits match the subcontract requirements exactly — an aggregate limit set too low is a compliance failure even if the per-occurrence limit is correct.
Listed in the workers comp section, not the GL section. The standard 100/100/500 ($100K per accident / $100K per disease per employee / $500K disease policy limit) is the minimum for most GC agreements. $1M/$1M/$1M EL is increasingly specified for high-value structural steel projects.
GCs often specify umbrella coverage must be on an occurrence form. Claims-made umbrellas exist — verify the form type matches the requirement before submitting the COI.
What Coverage Must Appear on a Steel Erector COI?
A fully compliant steel erector COI must reflect:
| Coverage Line | Standard Minimum | Federal / Large Commercial |
|---|---|---|
| General Liability | $1M per occurrence / $2M aggregate | $2M per occurrence / $4M aggregate |
| Workers Comp / EL | Statutory / 100/100/500 EL | Statutory / $1M/$1M/$1M EL |
| Commercial Auto | $1M CSL | $1M CSL |
| Umbrella / Excess | $5M occurrence form | $10M occurrence form |
Beyond the standard coverage lines, steel erection subcontracts increasingly require evidence of:
- Rigger’s liability — Covers third-party BI/PD arising from crane and rigging operations. Some GL policies exclude rigging entirely; confirm with your carrier and note the coverage status in the COI description box if required.
- Pollution liability — Relevant when steel erection involves welding fumes, cutting operations, or chemical coatings in occupied environments. Increasingly common on interior structural steel projects.
- Contractor’s equipment / inland marine — Many GCs request evidence of equipment coverage for cranes, forklifts, and man-lifts on site.
AISC Certification and COI Requirements
The Steel Erectors Association of America (SEAA) has published guidance confirming that AISC’s Certified Steel Erector program requires participants to submit a current certificate of insurance as part of the certification process. The AISC bulletin on COI and indemnity requirements specifies minimum coverage levels for certified erectors and requires that the COI name AISC or the certifying body in the certificate holder box.
AISC certification renewal is annual, which means your COI must remain current throughout the certification year. A policy that lapses mid-year — or a COI that is not updated after a renewal — can trigger a certification suspension. Steel erectors who rely on their AISC Certified Erector status for contract eligibility need an insurance partner who tracks certificate renewals proactively, not one who issues documents reactively.
OCIP and CCIP Projects: How They Change the COI Process
When a project operates under an OCIP or CCIP wrap program, the steel erector’s own GL and workers comp coverage is often excluded from the wrap policy. The COI process changes in two ways:
- The erector typically must enroll in the OCIP/CCIP, provide payroll data, and receive a certificate of participation rather than issuing their own COI for the enrolled coverages.
- The erector’s own policy must be endorsed to exclude the OCIP project, which creates an audit complication at year-end if the payroll split between wrapped and unwrapped projects is not documented.
Steel erectors moving between wrapped and non-wrapped projects in the same policy year should work with an agent who understands how to manage that payroll split correctly. For more detail, see our OCP vs. builder’s risk guide.
How to Add a General Contractor as Additional Insured
Additional insured status for a GC on a steel erector’s GL policy is added via endorsement. The two ISO forms used are CG 20 10 (additional insured, ongoing operations) and CG 20 37 (additional insured, completed operations). Most structural steel subcontracts require both — ongoing operations covers incidents while the steel work is in progress, and completed operations covers claims that arise after the structure is completed.
Blanket Additional Insured vs. Named Additional Insured
Named AI endorsements identify a specific party by name and are project-specific. Blanket AI endorsements automatically extend AI status to any entity your written contract requires you to name as an additional insured — without a per-project endorsement. For steel erectors working across multiple GCs simultaneously, a blanket AI endorsement eliminates the per-project endorsement bottleneck and reduces the risk that AI status is not in place when work begins.
Some GCs specify non-standard additional insured language that may not match the ISO form endorsement. In that situation, the GC’s legal team and your carrier’s underwriting team must agree on acceptable wording. Steel erectors who negotiate AI language before the subcontract is executed — rather than the day before mobilization — avoid the delays that push start dates.
How to Get Your Steel Erector COI
The Allen Thomas Group also maintains certificate tracking systems that monitor your subcontractors’ insurance compliance and renewal dates, verify AI status on incoming COIs, automate renewal reminders before coverage gaps occur, and provide a documented compliance record for GC audits.
For related steel erectors coverage guides: workers comp for steel erectors | insurance cost guide | OCP vs. builder's risk | surety bond guide.
To request a COI for an active policy, call (440) 826-3676 or contact your account manager directly. To get coverage in place, start with a free quote for your steel erection operation.
Frequently Asked Questions
What is a certificate of insurance for a steel erector?
A COI for a steel erector is a summary document — typically the ACORD 25 form — that confirms active coverage across all required insurance lines. It lists policy numbers, coverage limits, effective dates, and the named insured. It does not transfer any coverage rights to the certificate holder but serves as proof that insurance is in place before work begins.
What minimum limits do GCs require on a steel erector COI?
Most GC subcontract agreements for structural steel work require: GL at $1M per occurrence and $2M aggregate, workers comp at statutory limits plus $1M EL, commercial auto at $1M CSL, and umbrella or excess liability at $5M or more. Federal projects and private owners with risk management departments often specify $10M umbrella limits.
Does AISC certification require a certificate of insurance?
Yes. The AISC Certified Steel Erector program requires participants to submit a current certificate of insurance as part of the certification and annual recertification process. Letting a COI lapse can jeopardize AISC certification status.
How do I add a general contractor as additional insured on my steel erector policy?
Your agent attaches an endorsement — typically ISO forms CG 20 10 (ongoing operations) and CG 20 37 (completed operations) — to your GL policy. Blanket additional insured endorsements allow you to automatically extend AI status to any party required by written contract without a per-project endorsement request.
How quickly can I get a steel erector COI?
With an active policy in place, a standard ACORD 25 COI can typically be issued the same business day — often within hours of a request. The Allen Thomas Group provides same-day COI delivery as a standard service with no per-certificate fees.
What is a blanket additional insured endorsement and do I need one?
A blanket AI endorsement automatically extends additional insured status to any party your written contract requires you to name, without a separate endorsement for each project. Steel erectors working across multiple GCs simultaneously benefit significantly from blanket AI — it eliminates the per-project endorsement bottleneck and reduces the risk of starting work before AI status is confirmed.
What is the difference between a certificate holder and an additional insured?
A certificate holder receives a COI copy and cancellation notice but has no coverage rights under the policy. An additional insured has actual rights under the policy and can make claims for covered losses arising from your operations. General contractors typically require AI status — not mere certificate holder status — and the distinction matters significantly when a claim arises.
Same-Day COI Delivery for Steel Erectors
The Allen Thomas Group issues certificates of insurance the same day for all active steel erection clients — no per-certificate fees, no delays. Licensed in 27 states with 15+ A-rated carriers, we handle COI requests, additional insured endorsements, and AISC compliance documentation as part of your program.