IF THE UNDERLYING INSURANCE POLICY DOES NOT INDICATE THAT A WRITTEN AGREEMENT NAMING A PARTY AS AN ADDITIONAL INSURED MUST BE SIGNED, AN UNSIGNED DOCUMENT TO THAT EFFECT IS ENFORCEABLE (FIRST DEPT).

The First Department, reversing Supreme Court, determined that the fact the the change order, which required defendant (Arsenal) to name plaintiff as an additional insured, was unsigned, it was enforceable:

​An unsigned document may qualify as a written agreement requiring a party to be named as an additional insured, provided that the additional insured provisions in the insurance policy itself do not explicitly require that the agreement be signed … . If such agreement is unsigned, it may still be enforceable, “provided there is objective evidence establishing that the parties intended to be bound” … . * * *

Since the change order qualifies as a written agreement requiring Arsenal to name plaintiff as an additional insured, Supreme Court should have granted plaintiff’s motion for partial summary judgment and found that defendant insurer is required to provide plaintiff a defense in the underlying litigation, as the duty to defend was triggered … . A1 Specialized, Inc. v James Riv. Ins. Co., 2026 NY Slip Op 00570, First Dept 2-5-26

Practice Point: An unsigned document requiring a party to be named as an additional insured is enforceable if the underlying policy does not require the agreement to be signed.