California Code, Public Utilities Code - PUC § 309

(a) The executive director may employ such officers, administrative law judges, experts, engineers, statisticians, accountants, inspectors, clerks, and employees as the executive director deems necessary to carry out the provisions of this part or to perform the duties and exercise the powers conferred upon the commission by law. All officers and employees shall receive such compensation as is fixed by the commission.

(b) The executive director may authorize commission employees to undertake temporary training and development assignments with other agencies, departments, and commissions that undertake coordinated activities with the commission, including the Energy Commission, the State Air Resources Board, and the Geologic Energy Management Division.