If a subcontractor is injured on your job site without workers’ compensation coverage, your business could face significant liability depending on the circumstances.
That’s not a hypothetical; it’s a scenario that plays out regularly on construction projects across Minnesota and Wisconsin, and it’s entirely preventable.
Enforcing subcontractor insurance requirements before work starts is one of the clearest ways a general contractor can protect their business.
Subcontractor Insurance Requirements Every GC Should Verify
Before work begins, require each subcontractor to provide proof of:
- General liability insurance
At least $1 million per occurrence and $2 million aggregate to cover bodily injury and property damage. - Workers’ compensation insurance
Protects against liability if a subcontractor employee is injured on-site. - Commercial auto insurance
Covers business-use vehicles that personal auto policies may exclude. - Umbrella or excess liability coverage
Adds protection for high-value projects where standard limits may not be enough.
Why a Certificate of Insurance Alone Does Not Protect Your Business
A COI is a snapshot, not a guarantee. It shows coverage was in place when the document was issued. It doesn’t tell you whether the policy was canceled last week.
The fix is simple: require that you be named as an additional insured on the sub’s general liability policy. This extends their coverage to you for claims arising from their work. Depending on the endorsement, additional insured status may also provide notice of policy changes or cancellation.
Keep a tracking system. For GCs running multiple crews across job sites in Pierce County, Goodhue County, or up along the North Shore, letting COIs expire mid-project is a common and costly oversight.
A spreadsheet with expiration dates and a 30-day renewal reminder is a basic safeguard that most small GCs don’t have.
Why Every Subcontractor Needs a Written Agreement
Insurance certificates are only one part of protecting your business. A written subcontractor agreement creates the legal framework that defines who is responsible for what on the job site.
Without a signed agreement, even verified insurance coverage may leave gaps in how liability is assigned.
A subcontractor agreement should clearly outline:
- Insurance requirements
Specifies the types and limits of coverage each subcontractor must carry before work begins. - Additional insured requirements
Requires the subcontractor to add your business to their liability policy for protection against claims related to their work. - Indemnification language
Helps transfer responsibility back to the subcontractor if their work causes injury, damage, or loss. - Scope of work responsibilities
Clarifies exactly what the subcontractor is responsible for, reducing disputes and coverage confusion. - Compliance requirements
Confirms that subcontractors meet licensing, safety, and insurance obligations before entering the job site.
A certificate of insurance shows that a policy exists. A subcontractor agreement defines how that policy is expected to protect your business.
Common Insurance Gaps That Expose General Contractors to Risk
Most subcontractor liability issues come down to a few common oversights. When coverage requirements are unclear or not verified, general contractors can end up absorbing risks that should have been covered elsewhere.
Some of the most common problem areas include:
- Hiring uninsured subcontractors to keep bids competitive
Choosing a lower-cost subcontractor without proper workers’ compensation coverage can create major financial exposure. If an uninsured subcontractor is injured on the job, the resulting claim can lead to unexpected costs that quickly impact project profitability. - Skipping the additional insured requirement
Smaller subcontractors may resist extra paperwork, but requiring additional insured status helps protect your business if a claim arises from their work. Without it, your company may be left covering liability that should have fallen under the subcontractor’s policy. - Failing to verify specialty trade coverage
Electrical contractors, HVAC technicians, and restoration crews often carry risks that go beyond standard general liability coverage. Depending on the trade, additional protections such as contractors’ errors and omissions, pollution liability, or installation floaters may be necessary to close important coverage gaps.
MBA Insurance Services helps general contractors identify these risks before work begins by reviewing subcontractor insurance requirements based on trade, project scope, and contract obligations.
With the right coverage standards in place, contractors can reduce liability exposure and avoid preventable claims.
Review Your Subcontractor Insurance Requirements
If your subcontractor insurance requirements haven’t been reviewed recently, your business may have hidden coverage gaps that leave you exposed to costly claims.
MBA Insurance Services helps contractors across Minnesota and Wisconsin review subcontractor agreements, verify coverage requirements, and identify risk areas before problems arise.
With the right insurance requirements in place, you can protect your projects, control liability, and move forward with confidence.
Call MBA Insurance Services at 651-388-7128 or visit one of their offices in Red Wing, Lake City, Ellsworth, or Lutsen to review your subcontractor insurance requirements.
Contractor FAQs
Do I need to collect a COI from every subcontractor, even for small jobs?
Yes. The size of the job doesn’t change the liability exposure if something goes wrong. A one-day framing sub on a small addition can still cause a serious injury.
What does it mean to be named as an additional insured?
It means the sub’s liability policy extends to cover you for claims related to their work. It also typically entitles you to notice if the policy is canceled.
What if a sub says they’re exempt from workers’ comp?
Some sole proprietors are legally exempt, but that exemption doesn’t protect you. If they’re injured on your site and have no coverage, your policy or your personal assets may be exposed. Require a signed exemption form and verify it.
What’s a subcontractor agreement, and do I need one?
It’s a written contract that outlines the scope of work, payment terms, and insurance requirements. Without one, your verbal expectations aren’t enforceable. If you don’t have a standard agreement, an attorney or a risk management review can help you build one.
Can MBA Insurance help me determine the appropriate limits to require?
Yes. The right limits depend on your project type, contract values, and what your own policy requires. MBA Insurance Services works with contractors across Minnesota and Wisconsin and can walk you through what makes sense for your business.
