Subcontractor Insurance Requirements: What General Contractors Should Require and Verify

Subcontractor insurance requirements are the coverage types, limits, and endorsements a general contractor requires each subcontractor to carry before work starts and before payment is released. The core coverages are general liability and workers’ compensation, often paired with commercial auto and umbrella coverage. 

Most requirements come from the subcontract, not just state law, and usually include naming the general contractor as an additional insured party and a waiver of subrogation. The difficult part is verifying that coverage stays active across every subcontractor, on every pay cycle, since finance teams can spend more than 200 hours a year per project chasing compliance documents and pay applications.

What Insurance Do Subcontractors Need?

Subcontractors typically need general liability and workers’ compensation coverage. General liability responds to third-party property damage or bodily injury tied to their work. Workers’ compensation covers job-related injuries to their employees. Depending on the trade, a general contractor may also require commercial auto and umbrella or excess liability coverage.

The exact mix depends on the scope. A framing crew driving loaded trucks between sites needs commercial auto. A high-rise trade may trigger higher umbrella limits. The subcontract sets the requirement, so the coverages you demand should match the actual risk each subcontractor brings to your job.

Are Subcontractors Covered Under a General Contractor’s Policy?

No. Subcontractors operate as independent businesses, so a general contractor’s policy generally doesn’t cover them. Each subcontractor carries its own coverage for its own work.

That’s the whole point of requiring insurance from your subs. If an uninsured subcontractor causes damage or injures someone, the claim can land on you, along with the legal costs and the delay. To transfer that risk, contracts require each subcontractor to name the general contractor as an additional insured party. Additional insured status extends the subcontractor’s policy to defend you for claims arising from that subcontractor’s work.

What Coverage Limits and Endorsements Should a GC Require?

The subcontract sets the limits, and they vary by project. Many contracts start at $1 million per occurrence or more, and the AIA A401 subcontract is where these terms are usually specified. Confirm the right figures with your broker before you write them into the agreement.

Beyond limits, three items do the real work of protecting you. Additional insured status puts you on the subcontractor’s policy for claims tied to their work. A waiver of subrogation stops the subcontractor’s insurer from turning around and coming after you to recover what it paid. Both are standard risk-transfer practice in construction subcontracts, according to the Construction Financial Management Association (CFMA).

The proof of all of this is the certificate of insurance (COI). The COI is the document a subcontractor’s insurer or broker issues to show what coverage is active, at what limits, and through what date. Understanding why verifying certificates of insurance matters is the difference between a requirement on paper and a requirement you can actually rely on.

Do Subcontractor Insurance Requirements Vary by State?

Yes. Workers’ compensation is mandatory for most employers in every state except Texas, where private employers can opt out. That comes from the National Association of Insurance Commissioners (NAIC) and the Texas Department of Insurance.

The employee count that triggers mandatory coverage also varies by state, commonly three to five employees, per the Insurance Information Institute (III). General liability is different. It’s usually required by contract rather than by statute, so limits and endorsements come from the subcontract, not a state minimum. Confirm the specifics against your contract and with your broker or counsel.

What Happens When a Subcontractor’s Coverage Lapses Mid-Project?

The certificate of insurance you collected at kickoff won’t protect you. Coverage lapses mid-project, and no one calls to tell you. The requirement that protects a general contractor is the one verified before every payment, not the one filed in a folder.

Here’s how it plays out. You’re running a $25 million project with 25 subcontractors and a monthly billing cycle. You collected every COI at kickoff, so the folder looks complete. Four months in, one subcontractor’s policy expires and never renews.

Nobody flags it. You cut that subcontractor a payment on the next cycle, and now you’ve paid an uninsured sub on an active job. If that crew causes damage or an injury, the exposure can fall to you. Construction remains high-hazard work, with 1,032 construction and extraction worker fatalities recorded in 2024, per the U.S. Bureau of Labor Statistics (BLS).

“We already collected a COI at kickoff” is where most of this exposure hides. A kickoff certificate proves coverage on the day it was issued, not on the day you pay. “A spreadsheet works fine” runs into the same wall, because a spreadsheet records the lapse after the fact and doesn’t stop the payment from going out.

For the President or CEO, that’s the real risk to the company. It also sits next to a second cost, which is losing good trade partners because your billing drags. Protecting the business means catching the lapse before the check clears, not after.

How to Verify and Enforce Subcontractor Insurance Requirements

Enforcement is where the requirement earns its keep. Verifying and enforcing subcontractor insurance requirements comes down to the following:

1. Collect the COI before work starts. No certificate, no site access.
2. Match the description of work to the contract scope. Confirm the coverage on the certificate actually covers the work the subcontractor is doing for you.
3. Set required limits and endorsements in the subcontract. Write the limits, additional insured status, and waiver of subrogation into the AIA A401 agreement.
4. Track every expiration date. Know the day each policy lapses, and flag renewals before they come due, not after.
5. Gate payment on active coverage. Tie the pay application to compliance so funds never release to a subcontractor whose coverage has expired.

For the project accountant reconciling certificates against pay applications, that fifth step is the one that saves the month. When payment depends on active coverage, “subs won’t send updated paperwork” stops being a problem. Payment is the incentive.

A subcontractor who wants to get paid sends the renewal because the check doesn’t move until the certificate is current. Building a repeatable process for tracking contractor compliance documents turns that from a monthly scramble into a standard step.

How Built Helps General Contractors Enforce Insurance Compliance

Built enforces compliance before payment, not after. We collect and store every subcontractor’s certificate of insurance and verify the coverage against what the contract requires. We track expiration dates too, and our system sends the renewal reminders automatically. At the point of payment, Built surfaces each subcontractor’s compliance status, so funds never release to an uninsured or lapsed sub.

That changes the math for the finance team. General contractors on Built pay subcontractors more than 50% faster. Project accountants save 20 to 25 hours a week per project they’d otherwise spend chasing paperwork. For the President or CEO, that’s growth without adding headcount, so there’s no need to hire another person to keep pace with more projects.

The usual worry is that new software mid-project is painful. Built goes live in 48 hours, and more than 85% of subcontractors adopt it, because logging in to see what’s missing beats a phone call. A general contractor at Waltz Construction put it plainly: “Before implementing Built, we were spending one to two hours tracking down compliance documentation and cutting checks. Now that we’ve implemented Built, we can actually get into the financial part of our projects.” Its subs can log in and see exactly what they still owe.

Ready to stop verifying coverage by hand? Request a demo.

Subcontractor Insurance FAQs

What insurance do subcontractors need?

Most subcontractors carry general liability and, once they have employees, workers’ compensation. Depending on the trade and project, a general contractor may also require commercial auto, umbrella or excess liability, and professional liability. General liability responds to third-party property damage or bodily injury tied to the work. Workers’ compensation covers job-related injuries to the subcontractor’s employees. The exact coverages come from the subcontract, not just state law.

Are subcontractors covered under the general contractor’s insurance?

No. Subcontractors operate as independent businesses and are generally not covered by the general contractor’s policy. If an uninsured subcontractor causes damage or injury, the general contractor can be left carrying the cost. That’s why contracts require subcontractors to carry their own coverage and to name the general contractor as an additional insured party, which extends the subcontractor’s policy to defend the GC for claims arising from that subcontractor’s work.

What happens if my subcontractor doesn’t have insurance?

If a subcontractor isn’t insured and something goes wrong, the claim can fall to the general contractor, along with legal costs, repair bills, and project delays. An uninsured subcontractor with employees can also create workers’ compensation exposure for the GC. The practical fix is to verify active coverage before work starts and confirm it’s still active before each payment, rather than assuming a kickoff certificate still holds.

Do subcontractor insurance requirements vary by state?

Yes. Workers’ compensation is mandatory for most employers in every state except Texas, where private employers can opt out, and the employee count that triggers mandatory coverage varies by state, commonly three to five. General liability is usually required by contract rather than by statute, so limits and endorsements depend on the subcontract and the project. Confirm specifics against your contract and with your broker or counsel.

Can a general contractor withhold payment if a subcontractor’s insurance lapses?

In most cases, yes, if the subcontract makes active insurance a condition of payment, which is standard. Tying payment to compliance gives subcontractors a direct reason to keep coverage current. If there’s no valid certificate, then there’s no released payment. This is far more reliable than chasing updated certificates by email, and it stops funds from going out to a subcontractor whose coverage has quietly expired.