Does Workers' Comp Cover a Re-Aggravated Back Injury?

Can an Old Injury Still Qualify as a New Workers' Comp Claim?

A prior back injury does not disqualify a chef from filing a new claim if a shift-related event, like lifting a stock pot or a fall on a wet floor, makes it worse. The re-injury itself is what triggers coverage, even if the underlying vulnerability existed before.

How Apportionment Splits Responsibility Between Old and New Injury

Under California Labor Code § 4663, for example, permanent disability benefits must be apportioned based on the percentage of impairment actually caused by the current industrial injury versus prior or non-industrial factors. In practice, a doctor decides what share of the chef's disability came from the shift injury and what share was already there.

Why the Treating Physician's Opinion Decides the Outcome

This is a medical determination, not an adjuster's guess.

• The treating physician reviews prior medical records alongside the new injury
• They issue a percentage-based causation opinion
• That opinion drives how much of the claim is paid under the current policy

Employees can dispute an unfavorable apportionment finding through their state's formal review process.

What This Means for Restaurant Owners With Long-Tenured Staff

Kitchens run on physical labor, and long-tenured cooks accumulate wear over years. Document old injuries honestly rather than trying to hide them; a documented history makes apportionment cleaner and claims move faster. If a claim like this gets disputed outright, see What Happens If My Restaurant's Workers' Comp Claim Is Denied? Full coverage details live on our Workers' Compensation Insurance page.