Authorities as the decision cited them, with how this panel applied each one.
Escobedo v. Marshalls (2005) 70 Cal.Comp.Cases 604
Apportionment requires substantial medical evidence explaining how nonindustrial conditions cause permanent disability at evaluation time.
Applied to reject apportionment based on rheumatoid arthritis due to lack of substantial evidence explaining causation and disability.
From the decision · page 10Defendant correctly observes, however, that the pre-existing conditions need not be labor-
disabling to appropriately form the basis of apportionment. (Petition, at 12:5; Escobedo v.
Marshalls (2005) 70 Cal.Comp.Cases 604 [2005 Cal. Wrk. Comp. LEXIS 71] (Appeals. Bd. en
banc) [factors of apportionment may include pathology, asymptomatic prior conditions, and
retroactive prophylactic work preclusions, provided there is substantial medical evidence
establishing that these other factors have caused permanent disability].)
Labor Code section 4660.1; Brodie v. Workers' Comp. Appeals Bd. (2007) 40 Cal.4th 1313; Fitzpatrick (2018) 27 Cal.App.5th 607; Almaraz/Guzman (2009) 74 Cal.Comp.Cases 1084; Milpitas Unified School Dist. v. Workers' Comp. Appeals Bd. (2010) 187 Cal.App.4th 808
Permanent disability is determined by whole person impairment under AMA Guides and PDRS, considering medical record and effect on future earning capacity.
Applied to assess permanent disability and rebuttal of scheduled rating.
Ogilvie v. Workers' Comp. Appeals Bd. (2011) 197 Cal.App.4th 1262; LeBoeuf v. Workers' Comp. Appeals Bd. (1983) 34 Cal.3d 234
Scheduled rating can be rebutted by showing greater diminished future earning capacity or inability to benefit from vocational rehabilitation.
Applied to determine that applicant's inability to benefit from vocational rehabilitation rebutted scheduled rating.
From the decision · page 5Milpitas Unified School District (2009) 74 Cal.Comp.Cases 1084 (Appeals
Board en banc) as affirmed by the Court of Appeal in Milpitas Unified School Dist. v. Workers'
Comp. Appeals Bd. (Guzman) (2010) 187 Cal.App.4th 808 [75 Cal.Comp.Cases 837].)
The scheduled rating is not absolute. (Fitzpatrick, supra, 27 Cal.App.5th 607, 619-620.) A
rating obtained pursuant to the PDRS may be rebutted by showing applicant's diminished future
earning capacity is greater than the factor supplied by the PDRS. (Ogilvie v. Workers' Comp.
Appeals Bd. (2011) 197 Cal.App.4th 1262 [76 Cal.Comp.Cases 624] (Ogilvie); Contra Costa
County v. Workers' Comp. Appeals Bd. (Dahl) (2015) 240 Cal.App.4th 746 [80 Cal.Comp.Cases
119].)