WC Waiver of Subrogation

When a workers' compensation insurer pays benefits to an injured employee, it normally gains the right of subrogation — the ability to step into the employee's shoes and recover those costs from a negligent third party who actually caused the injury. A waiver of subrogation endorsement is the insurer's advance agreement to give up that recovery right against a specific party the insured has contractually agreed to protect. Without the endorsement, an insurer that pays a claim and then sues, say, the general contractor would trigger the insured's hold harmless agreement and pull the insured right back into the dispute.

These waivers are ubiquitous in construction, staffing, and vendor contracts. A project owner or general contractor will require every subcontractor to carry a waiver of subrogation in favor of the upstream parties, so that if a sub's employee is hurt and the sub's comp carrier pays, the carrier cannot then turn around and sue the owner or GC to get its money back. The endorsement can be written on a specific (scheduled by named entity or job) or blanket basis (automatically covering anyone the insured is contractually obligated to waive against), and because it increases the insurer's net loss, it usually carries an additional premium charge — often a small percentage of the payroll tied to the waived work.

A practical nuance buyers must respect: the waiver has to exist before the loss and, on a blanket form, the underlying written contract must genuinely require it. Backdating or relying on a blanket waiver without a signed contract in place can leave the subcontractor exposed and, worse, in breach of the very agreement that demanded the waiver. Employers should coordinate the WC waiver with the parallel waiver on their general liability policy and the related additional insured requirements, since contracts almost always demand all three together.