What is cross-liability coverage?

Cross-liability coverage is technically not a separate coverage but rather a policy condition — specifically, the 'separation of insureds' clause found in Section IV of the standard ISO CGL coverage form (CG 00 01). This clause states that the insurance applies separately to each insured against whom a claim is made or suit is brought, except with respect to the limits of insurance. For tree service companies with multiple named insureds — partners, LLCs, or related entities — this provision can be the difference between coverage and a denied claim.

Consider a tree service structured as a partnership between two individuals, both listed as named insureds on the GL policy. During operations, a crew working under Partner A's supervision drops a branch that injures Partner B. Without cross-liability, the insurer could argue that the claim is between two insureds under the same policy and therefore not covered — similar to how you cannot sue yourself. With the separation of insureds clause, the policy treats Partner A and Partner B as if each had their own policy, allowing Partner B to file a claim against Partner A's coverage.

This provision is equally important when multiple business entities share a policy. A tree service owner who operates both 'Smith Tree Care LLC' (the operating entity) and 'Smith Equipment Leasing LLC' (which owns the trucks and equipment) might list both entities as named insureds on a single GL policy. If Smith Equipment Leasing lends a truck to Smith Tree Care and a third party is injured due to a maintenance defect, Smith Tree Care might need to bring a cross-claim against Smith Equipment Leasing. The separation of insureds clause allows this claim to proceed under the shared policy.

The standard CGL policy includes the separation of insureds clause by default — you do not need to request it. However, some E&S market policies or manuscript forms may modify or exclude this provision. Review your policy to confirm the clause is present, especially if your policy was placed in the surplus lines market.

One important limitation: the separation of insureds clause does not increase your policy limits. Even though each insured is treated as having separate coverage, the per-occurrence and aggregate limits are shared among all insureds. A $1 million per-occurrence limit is the maximum available for any single occurrence, regardless of how many insureds are involved. If you need higher effective limits for multi-entity operations, discuss umbrella or excess coverage with your broker to ensure adequate protection for all named insureds.