This appellate review is governed by the standards set out in G.S. 58-9.6 of the Insurance Law, Chapter 58 of the North Carolina General Statutes and by the provisions of the Administrative Procedure Act, in particular G.S. 150A-51. See Comr. of Insurance v. Rate Bureau, 54 N.C. App. 601, 602, 284 S.E. 2d *264339, 340 (1981), disc. rev. denied, 305 N.C. 298, 290 S.E. 2d 708 (1982).
From among the various questions presented for review, we choose to discuss Assignment of Error No. 9. Our ruling upon it is dispositive of the entire appeal.
Defendants assign as error the action of the Hearing Officer in entering the order of 29 December 1981. The grounds, among others, are that the order “was erroneous as a matter of law,” and “was beyond the statutory authority and jurisdiction of the Hearing Officer.” The order of 29 December 1981 was signed by Thomas B. Sawyer, with these words following the signature: “Deputy Commissioner of Insurance and Designated Hearing Officer Presiding and Designated to Make the Final Agency Decision.” Elsewhere the record is void of any reference or any evidence of Hearing Officer Thomas B. Sawyer’s authority to make the final order.
The appellants do not dispute that Thomas B. Sawyer is a Deputy Commissioner of Insurance, nor do they dispute the statutory authority of the Commissioner of Insurance, who himself signed the notice of public hearing, to designate Sawyer as the hearing officer in this case. Indeed, G.S. 58-9.2 provides that, “All . . . hearings . . . may be conducted by the Commissioner personally or by one ... of his deputies . . . designated by him for the purpose.” Since the Department of Insurance is an “agency” subject to the provisions of the North Carolina Administrative Procedure Act, Comr. of Insurance v. Rate Bureau, 300 N.C. 381, 269 S.E. 2d 547, reh. dismissed, 301 N.C. 107, 273 S.E. 2d 300 (1980), an agency is also authorized to designate a hearing officer to handle contested cases pursuant to the provisions of the Act, G.S. 150A-32. Although the office of Commissioner of Insurance is one created by Article III, sec. 7(1), of the North Carolina Constitution, his “power and authority . . . emanate from the General Assembly and are limited by legislative prescription. The only power he has to fix rates is such power as the General Assembly has delegated to and vested in him.” Comr. of Insurance v. Automobile Rate Office, 287 N.C. 192, 202, 214 S.E. 2d 98, 104 (1975). A hearing officer is a creature of the statutes, G.S. 150A-32. Because the Commissioner and hearing officer may act only as the legislature has prescribed, we now ex*265amine the powers and duties of each in connection with contested cases of rate hearings.
When a revised classification and rate plan change is filed, the last sentence in G.S. 58-30.4 provides that “the filing, hearing, disapproval, review and appeal procedures before the Commissioner and the courts” shall be subject to the procedures “as provided for rates and classification plans in G.S. 58-124.20, 58-124.21, and 58-124.22.” Of these statutes, only G.S. 58-124.21(a) speaks to any duty of the Commissioner relevant to our present subject. The statute declares that once there has been a filing and once there has been notice given by the Commissioner, there must be a hearing. The next part of the statute, very pertinent here, provides that:
“If the Commissioner after hearing finds that the filing does not comply with the provisions of this Article, he may issue his order determining wherein and to what extent such filing is deemed to be improper and fixing a date thereafter, within a reasonable time, after which such filing shall no longer be effective. Any order of disapproval under this section must be entered within 90 days of the date such filing is received by the Commissioner.” (Emphasis added.)
When an agency of state government determines to use the services of a hearing officer, it is G.S. 150A-33 that prescribes his powers. The powers are limited to six categories: administering oaths, signing and issuing subpoenas, taking depositions, regulating the course of hearings, providing for pretrial conferences of parties to simplify issues, and making application to the court for a contempt order. Under the Administrative Procedure Act, when the services of a hearing officer are used, there must be a “proposal for decision” by the hearing officer. G.S. 150A-34(a) clearly states:
“When the official . . . who [is] to make a final decision [has] not heard a contested case, the decision shall not be made until a proposal for decision is served on the parties, and an opportunity is given to each party to file exceptions and proposed findings of fact and to present oral and written arguments to the officials who are to make the decision.”
*266Section (b) of the same statute requires that the proposal for decision contain findings of fact and conclusions of law and be prepared by the person who conducted the hearing.
Thus, reading these various statutes together and applying the law to the facts before us, we find that it was the duty of Hearing Officer Thomas B. Sawyer to go no further than to make a proposal for decision in this case to the Commissioner of Insurance himself (or his Chief Deputy appointed under G.S. 58-7.1). By the specific wording of G.S. 58424.21(a) it then became the duty of the Commissioner to review the submitted proposal for decision and thereafter to decide for himself “wherein and to what extent such filing is deemed to be improper.” The Commissioner has a statutory deadline of 90 days from date of filing in which to make his order of disapproval.
When the Commissioner of Insurance delegated to his appointed hearing officer the power to make the final agency decision, the Commissioner made an unlawful delegation of his powers. See G.S. 58-9.6(b)(2) and G.S. 150A-5H2). The record before us shows affirmatively and specifically that the Commissioner of Insurance has not carried out the duties given him by the General Assembly. See Comr. of Insurance v. Rate Bureau, supra, 54 N.C. App. 601, 284 S.E. 2d 339; Comr. of Insurance v. Rate Bureau, 43 N.C. App. 715, 259 S.E. 2d 922 (1979), disc. rev. denied, 299 N.C. 735, 267 S.E. 2d 670 (1980); Lanier, Comr. of Insurance v. Vines, 274 N.C. 486, 164 S.E. 2d 161 (1968).
We hold as follows: The Commissioner of Insurance had no statutory authority to designate Thomas B. Sawyer, a Deputy Commissioner of Insurance and Hearing Officer, as the official to make the final agency decision. The Order entered by Thomas B. Sawyer dated 29 December 1981, exceeded his authority; and, therefore, we declare the order null and void ab initio. By attempting to do what he has no power to do, the Commissioner of Insurance has abdicated what authority remains his to exercise under G.S. 58-124.21. The 90-day deadline has expired. Therefore, the Order of the Commissioner is vacated, and the Filing of the Bureau, having never been disapproved as provided by the statute, by the very terms of the statute remains in effect. Comr. of Insurance v. Rate Bureau, supra, 43 N.C. App. at 721, 259 S.E. 2d at 926. The rates filed are deemed approved. Comr. of In *267 surance v. Rate Bureau, supra, 54 N.C. App. at 606, 284 S.E. 2d at 343.
Reversed and vacated.
Chief Judge Vaughn and Judge Wells concur.