In the case of the death of an asbestos worker or firefighter from asbestosis, the period within which proceedings may be commenced for the collection of the benefits provided by Article 4 (commencing with Section 4700) of Chapter 2 of Part 2 is one year from the date of death.
Source:
Section 5406.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=LAB§ionNum=5406.5..