Complaints can be filed about the doctors who examine injured workers to help determine benefits (qualified medical evaluators). You have no legal obligations to respond to a subrogation letter.Subrogation in a workers' compensation case occurs when another party can secure a portion of your workers' compensation benefits. The employer must file a Notice of Lien claim in the employee's civil case and can do so with or without the retention of a subrogation attorney. We exist to provide workers' comp insurance to all California businesses. Because we are not for profit, our purpose is different from other insurers. Below you will find various forms that may be relevant to your workers' compensation claim. Sedgwick's chat feature can help you with questions about claims, careers and other topics. You may also fill out the form below to inquire about our services. Waiver of Subrogation - Contractors needing Workers Compensation insurance are required to provide this waiver.