What the panel ordered
Petition for Reconsideration granted; prior Findings and Award rescinded; new Findings and Award substituted finding 72% permanent disability without apportionment, awarding life pension and deferring attorney's fees issue.
Applicant sought reconsideration of the Findings and Award dated September 24, 2024, which found 64% permanent disability after apportionment; the WCJ prepared a Report and Recommendation to deny the petition, but the Appeals Board granted reconsideration and rescinded the prior F&A.
What was disputed, and how it came out
Each issue the panel decided, with the reasoning it gave. An outcome is what this panel did on this record — not a rule, and not a prediction.
The medical opinion on apportionment was found speculative and not substantial evidence; defendant did not meet burden to prove apportionment; therefore, apportionment was invalid and rejected.
From the decision · page 7(Escobedo, supra, 70 Cal. Comp. Cases at p. 621, emphasis added.) Here, Dr. Mahawar's medical reporting is not substantial medical evidence on the issue of
The facts that decided it
What the panel treated as outcome-determinative, and which side it favoured.
Dr. Mahawar admitted that his apportionment of sleep apnea to industrial injury and pre-existing condition was speculative and could not be separated to a degree of medical probability.
Favours Applicant prevailed
This undermined the substantiality of the apportionment evidence, leading to rejection of apportionment and granting of petition for reconsideration.
From the decision · page 7(Escobedo, supra, 70 Cal. Comp. Cases at p. 621, emphasis added.) Here, Dr. Mahawar's medical reporting is not substantial medical evidence on the issue of
What the panel did with the medical opinions
The role the physician served, and the weight the opinion carried. Physicians are named here as the decision names them; we do not score them.
Apportioned sleep apnea 80% to industrial injury and 20% to pre-existing condition in report; later admitted apportionment was speculative and could not separate factors to degree of medical probability.
The medical opinion on apportionment was speculative and lacked substantial evidence as it did not separate causes to a reasonable degree of medical probability.
From the decision · page 7(Escobedo, supra, 70 Cal. Comp. Cases at p. 621, emphasis added.) Here, Dr. Mahawar's medical reporting is not substantial medical evidence on the issue of
The rules the panel named
Authorities as the decision cited them, with how this panel applied each one.
Labor Code section 4663; Escobedo v. Marshalls (2005) 70 Cal.Comp.Cases 604
Apportionment of permanent disability must be based on causation and supported by substantial evidence, framed in terms of reasonable medical probability, not speculative.
Applied to reject speculative apportionment opinion and find defendant did not meet burden on apportionment.
From the decision · page 6II. Next, we turn to the issue of apportionment. Section 4663 provides that "[a]pportionment of permanent disability shall be based on causation." (Lab. Code, § 4663(a).) A doctor who prepares a report addressing the issue of permanent disability due to a claimed industrial injury must address the issue of causation of the permanent disability. (Lab. Code, § 4663(b).) Section 4663 requires that the doctor "make an apportionment determination by finding what approximate percentage of the permanent disability was caused by the direct result of injury arising out of and occurring in the course of employment and what approximate percentage of the permanent disability was caused by other factors both before and subsequent to the industrial injury, including prior industrial injuries." (Lab. Code, § 4663(c).) Pursuant to section 4663(c) and section 5705, applicant has the burden of establishing the approximate percentage of permanent disability directly caused by the industrial injury, while defendant has the burden of establishing the approximate percentage of permanent disability caused by factors other than the industrial injury.
What proof carried it
The evidence the panel weighed, by kind.
Medical opinion on apportionment was speculative and not substantial evidence, failing to separate causes to a degree of medical probability.
From the decision · page 7(Escobedo, supra, 70 Cal. Comp. Cases at p. 621, emphasis added.) Here, Dr. Mahawar's medical reporting is not substantial medical evidence on the issue of
The same issues, filtered across the whole corpus — or paste your own facts and let the search rank by factor match.
About this page
- A published decision of the California Workers' Compensation Appeals Board, taken apart by what it turned on. The Board publishes the decision itself; this page adds the extraction and quotes the passage behind every claim.
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