What the panel ordered
April 25, 2025 Findings and Order rescinded; case returned to trial level for further proceedings consistent with opinionp. 6
Petition for Reconsideration granted; prior Findings and Order rescinded; matter returned to trial level for further proceedings and decision by WCJ
This docket was decided more than once. Shown here is the latest released decision; we also hold September 2, 2025.
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 Board held that apportionment may apply to new and further disability after the prior award but not retroactively to the underlying permanent disability previously awarded, consistent with Vargas precedent and Labor Code section 4664(b).
The facts that decided it
What the panel treated as outcome-determinative, and which side it favoured.
Applicant received a 42% permanent partial disability award for 2017 injury on September 18, 2019
Favours Applicant prevailed
This prior award is conclusively presumed to exist at the time of any subsequent injury, limiting retroactive apportionment
From the decision · page 2The instant dispute involves a pending Petition to Reopen for New and Further Disability filed in Case No. ADJ11198598. Therein, applicant received a September 18, 2019 Award for 42 percent permanent partial disability arising out of a February 20, 2017 injury to the left knee and low back. (Minutes of Hearing and Summary of Evidence (Minutes), dated May 31, 2024, at p. 2:12.) Applicant filed a Petition to Reopen the claim for new and further disability on October 7, 2021.
QME apportioned 25% of current disability to 2020 injury sequelae
Favours Defendant prevailed
This apportionment was found legally incorrect when applied retroactively to the prior award but may apply to new and further disability
From the decision · page 2Dr. Newton’s report of October 17, 2023 reflects a reevaluation of applicant including a clinical evaluation and record review. (Ex. B, Report of Peter Newton, M.D., dated October 17, 2023, at p. 1.) Dr. Newton finds increased whole person impairment as compared to applicant’s prior evaluations, but also finds apportionment as follows:
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 75% of current lumbar spine and left knee disability to 2017 injury and 25% to 2020 right knee injury sequelae.
The QME's apportionment was found legally incorrect when applied retroactively to the prior award but may be valid for new and further disability.
From the decision · page 2Dr. Newton’s report of October 17, 2023 reflects a reevaluation of applicant including a clinical evaluation and record review. (Ex. B, Report of Peter Newton, M.D., dated October 17, 2023, at p. 1.) Dr. Newton finds increased whole person impairment as compared to applicant’s prior evaluations, but also finds apportionment as follows:
The rules the panel named
Authorities as the decision cited them, with how this panel applied each one.
Vargas v. Atascadero State Hosp. (2006) 71 Cal.Comp.Cases 500
Apportionment provisions of SB 899 apply to petitions to reopen pending at enactment date, but not to final awards before that date
The Board followed Vargas in holding that apportionment cannot be applied retroactively to a finalized award.
From the decision · page 3Applicant contends our decision in Vargas v. Atascadero State Hosp. (2006) 71 Cal.Comp.Cases 500 [2006 Cal. Wrk. Comp. LEXIS 116] (Appeals Bd. en banc) (Vargas) precludes the retroactive apportionment of a previously resolved award of permanent disability. We agree. In Vargas, we addressed the extent to which the changes made under SB899 would apply to applicant’s pending Petition to Reopen for New and Further Disability. We wrote:
Lab. Code, § 4664(b)
Prior permanent disability is conclusively presumed to exist at the time of any subsequent industrial injury
The Board held that apportionment cannot retroactively reduce the prior award but may apply to new and further disability.
From the decision · page 5Pursuant to section 4664(b), if the applicant has received a prior award of permanent disability, “it shall be conclusively presumed that the prior permanent disability exists at the time of any subsequent industrial injury.” Here, applicant’s June 8, 2020 injury could not have been a contributing factor to permanent disability that existed prior to that injury date. While later identified apportionment as part of new and further disability proceedings may not be retroactively applied to an underlying permanent disability that was the subject of a finalized award, it nonetheless may be applicable to new and further permanent disability beyond that which was previously awarded.
What proof carried it
The evidence the panel weighed, by kind.
Applicant's prior stipulated award of 42% permanent partial disability for 2017 injury
From the decision · page 2The instant dispute involves a pending Petition to Reopen for New and Further Disability filed in Case No. ADJ11198598. Therein, applicant received a September 18, 2019 Award for 42 percent permanent partial disability arising out of a February 20, 2017 injury to the left knee and low back. (Minutes of Hearing and Summary of Evidence (Minutes), dated May 31, 2024, at p. 2:12.) Applicant filed a Petition to Reopen the claim for new and further disability on October 7, 2021.
QME Dr. Newton's apportionment of 25% of disability to 2020 injury sequelae
From the decision · page 2Dr. Newton’s report of October 17, 2023 reflects a reevaluation of applicant including a clinical evaluation and record review. (Ex. B, Report of Peter Newton, M.D., dated October 17, 2023, at p. 1.) Dr. Newton finds increased whole person impairment as compared to applicant’s prior evaluations, but also finds apportionment as follows:
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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.
- The injured worker is not named here, and the case caption is not printed. Physicians appear as the decision names them, because a medical opinion is an act in a public proceeding.
- Issues, outcomes and weights were extracted by AI and released only where the source passage checked. Read the official decision before relying on anything here. Not legal advice.
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