On June 6, 2017, the Court of Appeals decided Burlington Ins. v. NYC Transit Auth., which will have a major impact on those purchasing and issuing liability insurance. The court in Burlington interprets coverage in commonly found additional insured (AI) endorsements.

To lay a foundation for the context of this decision, it is helpful to briefly review the recent history of additional insured Commercial General Liability (CGL) policy forms widely used in the real estate, hospitality and construction industries.