4454.5.
When determining average weekly earnings within the limits fixed in Section 4453, the earnings for an employee employed on a public works project that is subject to Chapter 1 (commencing with Section 1720) of Part 7 of Division 2 shall be taken at the wages actually paid or the prevailing wage that was applicable to the work performed by the employee, whichever amount is greater. An appeals board determination of whether a project was a public work or of the applicable prevailing wage, or both, has no effect in any other judicial or administrative proceeding.