Complete this form to register your insurance carrier with the state of Pennsylvania. Does your contract require a "waiver of subrogation"?If Yes, please fill out section below. Most frequently, contracting parties agree to contractually require the inclusion of a waiver of subrogation endorsement in a workers' compensation policy. This post will look into thirdparty subrogation under the Pennsylvania Workers' Compensation Act. " By endorsement, the General Liability policy must include Waiver of Subrogation in favor of your organization. Cancellation Notice. Memorandum of Law in the form set forth in Phila.Civ. Under a contract as provided in the standard ISO policy form). A workers' comp waiver of subrogation is a document that states that you are waiving your right for your insurer to seek compensation from a third party.