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Workers' Compensation Subrogation: Liens and Third-Party Recovery
How workers' compensation subrogation works, third-party recovery, the comp lien, made-whole and offset issues, and why state rules make it complex.
6 min readUpdated July 27, 2026
Workers' compensation subrogation arises when an on-the-job injury was also caused by a negligent third party, a faulty machine, a careless driver, an unsafe premises. The comp carrier that paid benefits can recover from that third party, but the rules are among the most state-specific in recovery.
The comp lien
When the injured worker pursues the third party, the workers' comp carrier generally holds a lien on that recovery for the medical and wage benefits it paid. How the lien is calculated (including credits, offsets, and the employer's own share of fault) varies sharply by jurisdiction.
Made-whole and allocation issues
Many states apply made-whole and common-fund principles that put the injured worker's uncompensated losses ahead of the carrier's lien, or reduce the lien by a share of the worker's legal costs. Getting the allocation right requires reading the settlement and the applicable state rules together.
Where AI helps in workers' comp
The hard part in comp is spotting third-party liability inside a file that reads as a routine injury claim, and then tracking the lien accurately. AI subrogation reads the claim record for third-party involvement, surfaces the recovery opportunity, and assembles the supporting evidence, while a person applies the state-specific lien and made-whole rules and approves the outcome.
What is a workers' comp lien?+
It's the carrier's right to be reimbursed, out of the injured worker's recovery from a negligent third party, for the benefits it paid. The calculation (offsets, credits, employer fault) is governed by state law.
Why is workers' comp subrogation considered complex?+
Because lien, made-whole, and allocation rules differ substantially by state, and the third-party liability is often buried in a file that otherwise looks like a standard injury claim.
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