Authorities as the decision cited them, with how this panel applied each one.
Lab. Code, §§ 5903, 5952(d); Lamb v. Workmen's Comp. Appeals Bd. (1974) 11 Cal.3d 274; Garza v. Workmen's Comp. Appeals Bd. (1970) 3 Cal.3d 312; LeVesque v. Workmen's Comp. Appeals Bd. (1970) 1 Cal.3d 627
Decisions by the Appeals Board must be supported by substantial evidence.
The Board reviewed the record to ensure the WCJ's decision was supported by substantial evidence.
From the decision · page 4I.
We highlight the following legal principles that may be relevant to our review of this
matter:
It is well established that decisions by the Appeals Board must be supported by substantial
evidence. (Lab. Code, § 5903, 5952(d); Lamb v. Workmen's Comp. Appeals Bd. (1974) 11 Cal.3d
274 [39 Cal.Comp.Cases 310]; Garza v. Workmen's Comp. Appeals Bd. (1970) 3 Cal.3d 312 [35
Cal.Comp.Cases 500]; LeVesque v. Workmen's Comp. Appeals Bd. (1970) 1 Cal.3d 627 [35
Cal.Comp.Cases 16].) "The term `substantial evidence' means evidence which, if true, has
probative force on the issues. It is more than a mere scintilla, and means such relevant evidence
as a reasonable mind might accept as adequate to support a conclusion...It must be reasonable in
E.L. Yeager Construction v. Workers' Comp. Appeals Bd. (Gatten) (2006) 145 Cal.App.4th 922; Escobedo v. Marshalls (2005) 70 Cal.Comp.Cases 604
Medical opinion must be framed in terms of reasonable medical probability, based on adequate examination and history, not speculative, and must set forth reasoning to support conclusions.
The WCJ evaluated the medical opinions for adequacy and substantial evidence.
From the decision · page 5Medical evidence is required if there is an issue regarding the compensability of the claim.
(Lab. Code, § 4060(c)(d), 4061(i), 4062.3(l).) A medical opinion must be framed in terms of
reasonable medical probability, it must be based on an adequate examination and history, it must
not be speculative, and it must set forth reasoning to support the expert conclusions reached. (E.L.
Yeager Construction v. Workers' Comp. Appeals Bd. (Gatten) (2006) 145 Cal.App.4th 922, 928
[71 Cal.Comp.Cases 1687]; Escobedo v. Marshalls (2005) 70 Cal.Comp.Cases 604, 620-621
(Appeals Bd. en banc).) "Medical reports and opinions are not substantial evidence if they are
known to be erroneous, or if they are based on facts no longer germane, on inadequate medical
histories and examinations, or on incorrect legal theories. Medical opinion also fails to support
the Board's findings if it is based on surmise, speculation, conjecture or guess." (Hegglin v.
Workmen's Comp. Appeals Bd. (1971) 4 Cal.3d 162, 169 [36 Cal.Comp.Cases 93].) Defendant
holds the burden of proof on apportionment of permanent disability. (Lab. Code, § 5705; see also
Escobedo, supra, 70 Cal.Comp.Cases at p. 613.)
Lab. Code, § 5705; Escobedo, supra
Defendant holds the burden of proof on apportionment of permanent disability.
The WCJ found the defendant did not meet the burden of proof on apportionment.
From the decision · page 5Medical evidence is required if there is an issue regarding the compensability of the claim.
(Lab. Code, § 4060(c)(d), 4061(i), 4062.3(l).) A medical opinion must be framed in terms of
reasonable medical probability, it must be based on an adequate examination and history, it must
not be speculative, and it must set forth reasoning to support the expert conclusions reached. (E.L.
Yeager Construction v. Workers' Comp. Appeals Bd. (Gatten) (2006) 145 Cal.App.4th 922, 928
[71 Cal.Comp.Cases 1687]; Escobedo v. Marshalls (2005) 70 Cal.Comp.Cases 604, 620-621
(Appeals Bd. en banc).) "Medical reports and opinions are not substantial evidence if they are
known to be erroneous, or if they are based on facts no longer germane, on inadequate medical
histories and examinations, or on incorrect legal theories. Medical opinion also fails to support
the Board's findings if it is based on surmise, speculation, conjecture or guess." (Hegglin v.
Workmen's Comp. Appeals Bd. (1971) 4 Cal.3d 162, 169 [36 Cal.Comp.Cases 93].) Defendant
holds the burden of proof on apportionment of permanent disability. (Lab. Code, § 5705; see also
Escobedo, supra, 70 Cal.Comp.Cases at p. 613.)
Hamilton v. Lockheed Corporation (2001) 66 Cal.Comp.Cases 473
Decisions must be based on admitted evidence in the record; the record must be complete and adequately developed.
The Board noted the need for a complete record and adequate findings.
From the decision · page 5Further, decisions of the Appeals Board "must be based on admitted evidence in the
record." (Hamilton v. Lockheed Corporation (Hamilton) (2001) 66 Cal.Comp.Cases 473, 476
(Appeals Board en banc).) An adequate and complete record is necessary to understand the basis
for the WCJ's decision. (Lab. Code, § 5313; see also Cal. Code Regs., tit. 8, § 10787.) "It is the
responsibility of the parties and the WCJ to ensure that the record is complete when a case is
submitted for decision on the record. At a minimum, the record must contain, in properly
organized form, the issues submitted for decision, the admissions and stipulations of the parties,
and admitted evidence." (Hamilton, supra, 66 Cal.Comp.Cases at p. 475.) The WCJ's decision
must "set [] forth clearly and concisely the reasons for the decision made on each issue, and the
evidence relied on," so that "the parties, and the Board if reconsideration is sought, [can] ascertain
the basis for the decision[.]... For the opinion on decision to be meaningful, the WCJ must refer
with specificity to an adequate and completely developed record." (Id. at p. 476 (citing Evans v.
Workmen's Comp. Appeals Bd. (1968) 68 Cal.2d 753, 755 [33 Cal.Comp.Cases 350]).)
McClune v. Workers' Comp. Appeals Bd. (1998) 62 Cal.App.4th 1117
The Appeals Board has a constitutional mandate to ensure substantial justice and must further develop the record where evidence is insufficient.
The Board considered whether further development of the record was necessary.
From the decision · page 5The WCJ and the Appeals Board have a duty to further develop the record where there is
insufficient evidence on an issue. (McClune v. Workers' Comp. Appeals Bd. (1998) 62