When the payment of compensation has been unreasonably delayed or refused subsequent to the issuance of an award by an employer that has secured the payment of compensation pursuant to Section 3700, the appeals board shall, in addition to increasing the order, decision, or award pursuant to Section 5814, award reasonable attorneys’ fees incurred in enforcing the payment of compensation awarded.
Source:
Section 5814.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=LAB§ionNum=5814.5..