The salaries, compensation and wages of all state officers, boards, commissions, deputies and employees, except in the Legislative and Judicial Departments of the state government, not prescribed by statute or special act, shall be determined, subject to the approval of the Secretary of the Office of Policy and Management, by the Commissioner of Administrative Services. The salaries of the Commissioner of Administrative Services and the Secretary of the Office of Policy and Management shall be determined by the Governor. Salaries, compensation and wages in the legislative department shall be determined by the General Assembly and, in the Judicial Department, when not prescribed by statute or special act, shall be determined by the judges of the Supreme Court in accordance with the applicable provisions of § 51-12, unless the appointing authority is empowered to fix, approve, or otherwise determine, such salaries, compensation or wages in which case the salaries, compensation or wages so fixed, approved or otherwise determined shall not exceed the salaries, compensation or wages fixed for comparable positions in the compensation plan referred to in § 51-12.