Additional Insured for Wisconsin Contractors: How It Works and What to Check

Almost every subcontract, lease, and equipment rental agreement a Wisconsin contractor signs today includes the same request: name us as an additional insured. Most contractors say yes, send the request to their agent, and move on. The trouble is that additional insured status is one of the most misunderstood pieces of contractor insurance, and getting it wrong can cost you a job, a customer relationship, or a lawsuit you thought your policy would handle.

This guide explains what additional insured coverage for Wisconsin contractors actually does, the difference between the common versions, what general contractors and property owners will ask for, and the mistakes we see most often. MM Insurance Associates is an independent agency in New Berlin that has helped Wisconsin contractors sort out contract insurance requirements since 1997.

This post is part of our contractor terms series. For quick definitions of related terms, see our Wisconsin contractor insurance glossary.

What Additional Insured Status Means

When you add someone as an additional insured, you extend part of your own liability policy to protect them. If a third party sues the general contractor or the property owner because of something connected to your work, your insurance carrier may defend and pay that claim on their behalf, within the terms of your policy.

That protection is not unlimited. An additional insured does not become a full named insured on your policy. Their coverage is usually limited to claims arising out of your work, your operations, or your premises, and it is shaped entirely by the specific wording added to your policy. Two contractors can both say a general contractor is an additional insured and be providing very different protection.

Additional insured status is most often added to general liability. It can also be added to commercial auto and umbrella or excess liability, and many contracts ask for all three.

Why General Contractors and Owners Require It

The logic is simple risk transfer. The party higher up the contract chain wants the party doing the work to carry the cost of claims that work creates. If your crew leaves a cord across a walkway and a delivery driver trips, the injured person will likely sue everyone on the site. Additional insured status lets the general contractor turn that claim over to your carrier instead of paying it through their own policy and loss history.

Property owners, lenders, landlords, and equipment rental companies use the same approach. That is why the request shows up in places contractors do not always expect, such as a shop lease or a lift rental agreement.

Our general contractor insurance guide covers how this request flows down from the owner to every trade on a project.

Ongoing Operations vs Completed Operations

This is the distinction that causes the most problems. Additional insured wording generally comes in two flavors, and many contracts require both.

Ongoing operations

Ongoing operations coverage protects the additional insured while your work is in progress. A common standard form for this is the ISO CG 20 10. If someone is injured on site during the project and your work is involved, this is the wording that responds.

Completed operations

Completed operations coverage protects the additional insured after your work is finished and turned over. A common standard form for this is the ISO CG 20 37. This matters because many construction claims surface months or years later, such as water intrusion from a roof, a failed deck connection, or a slip on a stair you installed. If the contract requires completed operations coverage and your policy only grants ongoing operations, the general contractor has no protection under your policy for those later claims.

Read the contract for phrases like "including completed operations" or a requirement that coverage be maintained for a set number of years after completion. Those details have to match what your policy provides.

Blanket vs Scheduled Additional Insured

There are two main ways to add additional insureds to a policy.

• Scheduled additional insured. Each person or company is listed by name on your policy. This works for a contractor with one or two repeat customers, but every new request means a policy change and a wait.

• Blanket additional insured. Your policy automatically extends additional insured status to anyone you have agreed in a written contract to add. This is the practical choice for most contractors who work for many general contractors and owners.

Blanket wording has its own conditions. Most versions require a written contract that was signed before the work began or before the loss. A handshake deal or a contract signed after an injury usually will not qualify. Some blanket forms also limit coverage to what the contract requires, so if the contract is silent on completed operations, the coverage may be too.

Related Terms That Travel With Additional Insured

Insurance exhibits rarely ask for additional insured status on its own. Expect to see these companion terms in the same paragraph:

• Primary and noncontributory. Your policy pays first, and the additional insured's own policy does not have to share the loss. Without this wording, the two carriers may argue about who pays and how much.

• Waiver of subrogation. Your carrier agrees not to pursue the other party to recover what it paid. This is often requested on workers compensation as well as liability and auto.

• Per project aggregate. Your general liability aggregate applies separately to each job, so a large claim on one project does not use up the limit available on another.

• Umbrella follow form. Your umbrella or excess policy extends the same additional insured protection above your primary limits.

Workers compensation does not use additional insured status, but contracts often require a waiver of subrogation on it. Learn more on our workers compensation page.

Common Mistakes That Leave Contractors Exposed

Most additional insured problems come from a mismatch between what the contract says and what the policy does. These are the ones we see most often with Wisconsin contractors:

• Relying on the certificate alone. A certificate of insurance is a summary. If the policy does not actually contain the matching additional insured wording, the certificate does not create it.

• Missing completed operations. The contract requires it, the policy only covers ongoing work, and the gap only shows up when a claim arrives after the job is done.

• Signing contracts after work starts. Blanket wording often depends on a written agreement signed before the work or loss. Late paperwork can void the protection you meant to give.

• Not passing requirements down to subs. If your contract with the owner requires additional insured status from every tier, your subcontractors need to name you and the owner on their policies too.

• Forgetting the umbrella. Contracts that require a 2,000,000 or 5,000,000 umbrella usually expect the additional insured to be covered there as well.

Our deep dive on the certificate of insurance explains exactly what that document proves and what it does not.

How to Handle Additional Insured Requests the Right Way

A simple routine prevents most of these problems:

• Send us the insurance section of any contract before you sign or bid, not after you win the job.

• Ask for blanket additional insured wording that includes both ongoing and completed operations, plus blanket primary and noncontributory and waiver of subrogation where your carrier allows it.

• Keep signed contracts on file and make sure they are dated before work begins.

• Collect certificates from your own subcontractors before they set foot on site, and check that they name you correctly.

• Review your requirements at every renewal, since the contracts you sign may have changed over the year.

If you are building or reviewing a contractor package, our business insurance page outlines the coverage MM Insurance Associates places for Wisconsin contractors.

Frequently Asked Questions

What does it mean to be an additional insured on a contractor's policy?

It means part of the contractor's liability coverage extends to protect another party, such as a general contractor or property owner, for claims connected to the contractor's work. The protection is limited by the specific wording added to the policy.

Is an additional insured the same as a certificate holder?

No. A certificate holder simply receives proof that coverage exists. An additional insured actually has protection under the policy. A certificate can show both, but only the policy wording creates coverage.

Does additional insured coverage include completed operations?

Only if the policy wording says so. Ongoing operations and completed operations are often separate. If your contract requires coverage after the job is finished, confirm your policy grants completed operations protection.

Does adding an additional insured cost extra?

It depends on the carrier and the wording. Some contractor policies include blanket additional insured wording as part of the package, while others charge for it or for individual scheduled additions. Ask your agent what your current policy includes.

Can my subcontractors list me as an additional insured?

Yes, and you should require it. Put the requirement in your written subcontract, ask for both ongoing and completed operations, and collect a certificate before work starts.

Does additional insured status apply to workers compensation?

No. Workers compensation does not have additional insureds. Contracts usually ask for a waiver of subrogation on workers compensation instead.

Get Your Contract Requirements Right the First Time

Additional insured requests are routine, but the details decide whether the protection actually works when a claim comes in. Call MM Insurance Associates at (262) 754-4736 to talk with a licensed agent about additional insured coverage for your Wisconsin contracting business, or send us the insurance section of your next contract and we will review it with you before you sign.

You can also get started online through our customer portal and we will follow up with the coverage details that fit your operation.