RANDALL MINVIELLE vs. COUNTY OF CONTRA COSTA / CONTRA COSTA FIRE
The Workers' Compensation Appeals Board rescinded the prior award because the defendant failed to prove overlap between the applicant's 2004 and 1992 back injuries. Apportionment under Labor Code section 4664 was improper as the permanent disability from each injury was rated under different standards (1950 schedule vs. AMA Guides). The case was returned to the trial level to determine if both injuries could be rated under the same standard for proper apportionment.