Section 3864 Of Chapter 5. Subrogation Of Employer From California Labor Code >> Division 4. >> Part 1. >> Chapter 5.

. If an action as provided in this chapter prosecuted by the employee, the employer, or both jointly against the third person results in judgment against such third person, or settlement by such third person, the employer shall have no liability to reimburse or hold such third person harmless on such judgment or settlement in absence of a written agreement so to do executed prior to the injury.