Reviewed by Tom Moore, Agency Partner, CA Agency Insurance License 6003355
Last reviewed: 3/16/2026
Key takeaway: Co-branded marketing partnership liability refers to the legal and financial exposure that arises when two or more businesses jointly promote a product, event, or service, and something goes wrong. Most standard commercial general liability policies cover your business's own operations, but they are often silent on claims that trace back to a partner's actions, a shared campaign, or a jointly produced piece of content. This gap applies to any Spokane business running a joint promotion, sponsoring a co-branded event, or cross-marketing with another local company, regardless of how informal the arrangement feels.
You and another local business decide to run something together. Maybe it's a spring promotion. Maybe it's a pop-up at a Spokane farmers market. Maybe it's a joint mailer, a shared social campaign, or a co-sponsored community event. You've done business with this person for years. You trust them. Nobody's calling a lawyer. That's exactly when it bites you.
Co-branded marketing feels casual because it usually starts casual. Two logos. One flyer. Split costs. But the moment you attach your name to a joint campaign, you've created a shared public-facing identity, and with it, shared exposure. If a customer is injured at that pop-up, if the campaign makes a claim that turns out to be false, if a third party sues over intellectual property in the shared content, who does the lawsuit name? Both of you. Often regardless of who was actually at fault. Your general liability policy was written around your business. Not a partnership that didn't exist yet.
Outline
What is co-branded marketing and why does liability matter?
Co-branded marketing is any arrangement where two or more businesses jointly present themselves to the public under a shared campaign, event, or promotion. One logo next to another on a flyer. Two businesses listed as co-hosts of an event. A joint email offer sent to both customer lists. A referral promotion where both brands are actively named and promoted together.
What makes this different from a vendor relationship or a referral agreement is the public-facing shared identity. You're not just working with another business, you're appearing as a joint operation to your customers and theirs. That matters to an insurance carrier because it changes the risk profile of what you're doing.
Liability enters the picture anywhere a third party can be harmed: a customer injured at a co-hosted event, a consumer misled by a claim in a joint ad, a copyright holder whose image ended up in shared promotional material, or a competitor who believes the campaign disparaged them. The Washington State Office of the Insurance Commissioner provides general guidance on business liability exposure, but the specifics depend heavily on how your policy is written, and most small business owners have never read their policy that carefully.
The gap isn't hypothetical. It shows up in claims. And it shows up most often when business owners assumed the other company's insurance would handle it.
Where does your current general liability policy fall short?
"Arising out of your operations", and why those four words matter
Every commercial general liability policy has a coverage trigger. The most common language covers bodily injury and property damage that arises out of your operations, or personal and advertising injury that comes from your advertising. That qualifier, "your", does real work.
When you're running a co-branded campaign, the question of whose operations caused the harm gets complicated. A customer slips at an event you co-hosted. The injury arose out of an event, but was it your event or your partner's? If your partner set up the unsafe condition, their carrier may point to their policy. Your carrier may point to your partner. And you're in the middle of a coverage dispute while the lawsuit is active.
The Insurance Information Institute provides accessible breakdowns of standard policy language. The core issue for co-branded arrangements is that standard CGL policies were not designed with joint promotions in mind. They cover your standalone operations. A joint promotion is something else.
What happens when the other business is the one that made the mistake?
This is the question most business owners don't ask until they're staring at a demand letter. Say your co-branded partner made a product claim in the shared campaign that turned out to be inaccurate. Or their employee said something at a joint event that's now the basis of a defamation claim. Or their business didn't have the licensing or permits required for the promotion.
You're named in the lawsuit because your brand was on the materials. Your carrier reviews the claim and determines the negligent act originated with your partner. Your partner's carrier says it's a shared-promotion claim and not a covered business operation. You're now stuck, potentially on the hook for legal defense costs even if you're ultimately not found liable, because the coverage structure wasn't set up to handle this scenario.
The NAIC consumer guidance on business insurance notes that joint ventures and co-promotions often require specific policy treatment. That treatment almost never happens automatically.
The contract problem most Spokane businesses ignore
Most co-branded marketing arrangements in Spokane, and everywhere else, happen with no written agreement at all. Or a brief email chain. Or a verbal understanding at a networking event. That informality is comfortable. It's also what leaves you exposed.
A written partnership agreement does several things an oral arrangement cannot. It defines who owns the content created for the campaign. It allocates liability, which party is responsible if a claim arises, and which party's insurance is primary. It specifies what each business is permitted to say under the shared brand. It includes an indemnification clause so that if your partner causes a claim, they're contractually required to defend and hold you harmless.
Without that agreement, courts often treat co-branded campaigns as de facto joint ventures. In Washington, that can create joint and several liability, meaning either party can be held responsible for the full amount of a judgment, regardless of how the fault was actually divided. The Washington courts system provides resources on business liability standards, and the joint venture doctrine is one that catches small businesses off guard regularly.
Before you launch anything with another business's name next to yours, get the agreement in writing. It doesn't have to be a 20-page contract. It does have to exist.
Which coverage types actually close the gap?
General liability endorsements and additional insured status
The first fix is often the simplest, and it's one most business owners don't think to ask for. If you're entering a co-branded arrangement, you can request to be listed as an additional insured on your partner's general liability policy, and ask them to do the same on yours. Additional insured status extends coverage under the other party's policy to you for claims arising from the joint operation.
This isn't automatic. It requires an endorsement, a written modification to the policy, and your partner's carrier has to agree to add it. Some carriers will push back depending on the nature of the arrangement. But for a temporary promotion or event, it's often achievable and relatively inexpensive. The key is asking before the campaign goes live, not after a claim is filed.
The Washington State OIC has noted that additional insured endorsements are one of the most commonly misunderstood tools in commercial insurance. They do not make the additional insured a policyholder, they extend specific coverage for specific claims. The scope matters. Make sure the endorsement covers the actual activity you're doing together, not just general liability exposure.
When you might need a separate promotional liability or media liability policy
For larger co-branded campaigns, anything involving significant advertising spend, content production, or public-facing claims about products or services, a standalone promotional liability or media liability policy may be the right call. These policies are designed specifically for risks that fall outside a standard CGL: advertising injury that traces to the campaign's content, intellectual property infringement in shared creative assets, claims arising from the use of talent or photography in promotional materials.
Media liability insurance is increasingly common for businesses that produce content, run social campaigns, or create any advertising that makes specific claims. If your co-branded campaign includes video, sponsored content, or anything that makes a product or service claim, it's worth having a conversation about whether your existing coverage actually responds to that risk.
This isn't a coverage most small business owners carry by default. It's the kind of thing that comes up in a policy review, which is exactly why the review matters.
What to do before you launch any co-branded campaign
The list is shorter than most people expect. Four things, done before any materials go to print or any event goes public:
- Get the partnership in writing. Even a one-page agreement that covers ownership of content, liability allocation, and indemnification. A Spokane business attorney can draft a template you can use repeatedly.
- Check your existing general liability policy. Pull it out and read the advertising injury and personal injury sections. Look at the definition of "your operations" and "your product." Understand what triggers coverage and what doesn't. If you can't parse the language, call your broker.
- Request additional insured status. Both parties should be listed on each other's policies for the duration of the promotion. Get the endorsement in writing before the campaign launches.
- Call your insurance agent before, not after. The right time to find a coverage gap is before you've signed your name to a joint campaign, not while you're defending a claim. A quick conversation about what you're planning can catch the exposures you didn't know to look for.
If you're running a more complex arrangement, a joint event, a co-developed product, a long-term marketing partnership, the stakes are higher and the coverage review should be proportionally more thorough. The Washington State OIC has a resource for finding licensed insurance professionals if you don't currently have an agent who covers commercial lines.
Co-branded marketing is one of those areas where a 20-minute conversation with a good broker saves you the kind of headache that takes months to untangle. Worth the call.
If you're a Spokane business owner running a co-branded campaign, or planning one, and you want to know whether your current coverage actually handles it, we'll take a look. No pitch, no pressure. Just an honest review of what you have and what the promotion actually exposes you to. Get a quote or reach out here.
Frequently Asked Questions
Does my general liability policy automatically cover co-branded marketing campaigns?
Not necessarily. Standard general liability policies cover your operations and your advertising, not a joint promotion run under a shared brand identity. If a claim arises from the campaign and it traces back to your partner's actions or the jointly produced content, coverage depends on how the policy language is written. Many policies have gaps in this scenario.
What is additional insured status and how does it apply to a co-branded partnership?
Additional insured status means you are listed on your partner's general liability policy for claims arising from the shared activity, and they are listed on yours. It requires a written endorsement to each policy. It does not make either party a full policyholder, it extends specific coverage for specific claims related to the joint promotion.
Does a co-branded marketing arrangement create a legal partnership or joint venture?
It can, depending on how the arrangement is structured and how courts interpret it. In Washington, an informal co-branded arrangement without a written agreement can be treated as a joint venture, which creates joint and several liability. That means either party could be held responsible for the full amount of a judgment. A written agreement with clear liability allocation helps prevent this outcome.
What kind of claims come from co-branded marketing?
Common claim types include: bodily injury at a co-hosted event, false advertising or misleading claims in shared promotional materials, intellectual property infringement in jointly produced content, and defamation or disparagement claims arising from the campaign's messaging.
Do I need a separate media liability or promotional liability policy?
For simple joint promotions with minimal content production, additional insured endorsements on existing general liability policies may be sufficient. For campaigns involving significant advertising, original creative content, product claims, or public-facing media, a standalone media liability or promotional liability policy may be worth considering.
What should a co-branded marketing agreement include?
At minimum: ownership of content and materials created for the campaign, which party's insurance is primary, indemnification language specifying that the at-fault party defends and holds the other harmless, what each business is permitted to say under the shared brand, and the duration of the arrangement.
How do I know if my current commercial general liability policy has a gap here?
Read the advertising injury and personal injury sections of your policy. Look at how "your operations" and "your advertising" are defined. If the language doesn't clearly address a jointly operated promotion, there may be a gap. The most reliable way to know is to walk your broker through the specific campaign you're planning before it launches.
Can a Spokane business owner get coverage for a short-term co-branded promotion?
Yes. For short-term promotions or events, additional insured endorsements can often be added to existing policies for the duration of the campaign. Some carriers also offer short-term event liability coverage. The key is requesting it before the event, not after.
