California Code, Government Code - GOV § 20151

(a) For the exclusive purpose of both of the following:

(b) Minimizing the employers' costs of providing benefits under this part.

(c) By investing with the care, skill, prudence, and diligence under the circumstances then prevailing that a prudent person acting in a like capacity and familiar with those matters would use in the conduct of an enterprise of a like character and with like aims.