Any employer served with a special order or any action order by the division pursuant to Section 6308, or any other person obligated to the employer as specified in subdivision (b) of Section 6319, may appeal to the appeals board within 15 working days from the receipt of the order with respect to the action ordered by the division, abatement periods, the reasonableness of the changes required by the division to abate the condition.
Source:
Section 6600.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=LAB§ionNum=6600.5..