Conn. Gen. Stat. § 4-181a

(2) Within forty days of the personal delivery or mailing of the final decision, the agency, regardless of whether a petition for reconsideration has been filed, may decide to reconsider the final decision.

(3) If the agency decides to reconsider a final decision, pursuant to subdivision (1) or (2) of this subsection, the agency shall proceed in a reasonable time to conduct such additional proceedings as may be necessary to render a decision modifying, affirming or reversing the final decision, provided such decision made after reconsideration shall be rendered not later than ninety days following the date on which the agency decides to reconsider the final decision. If the agency fails to render such decision made after reconsideration within such ninety-day period, the original final decision shall remain the final decision in the contested case for purposes of any appeal under the provisions of section 4-183 .

(4) Except as otherwise provided in subdivision (3) of this subsection, an agency decision made after reconsideration pursuant to this subsection shall become the final decision in the contested case in lieu of the original final decision for purposes of any appeal under the provisions of section 4-183 , including, but not limited to, an appeal of (A) any issue decided by the agency in its original final decision that was not the subject of any petition for reconsideration or the agency's decision made after reconsideration, (B) any issue as to which reconsideration was requested but not granted, and (C) any issue that was reconsidered but not modified by the agency from the determination of such issue in the original final decision.

(b) On a showing of changed conditions, the agency may reverse or modify the final decision, at any time, at the request of any person or on the agency's own motion. The procedure set forth in this chapter for contested cases shall be applicable to any proceeding in which such reversal or modification of any final decision is to be considered. The party or parties who were the subject of the original final decision, or their successors, if known, and intervenors in the original contested case, shall be notified of the proceeding and shall be given the opportunity to participate in the proceeding. Any decision to reverse or modify a final decision shall make provision for the rights or privileges of any person who has been shown to have relied on such final decision.

(c) The agency may, without further proceedings, modify a final decision to correct any clerical error. A person may appeal that modification under the provisions of section 4-183 or, if an appeal is pending when the modification is made, may amend the appeal.

Cited. 232 C. 181; 234 C. 411; 235 C. 128; 238 C. 361; 239 C. 32. Agency decision that is subject to motion for reconsideration is not a final decision from which appeal may be taken even if party appealing decision is not aggrieved by portion of agency decision that is subject of motion for reconsideration. 311 C. 259.

Cited. 30 CA 738. Failure to file petition for reconsideration in timely manner resulted in dismissal of plaintiff's appeal for lack of subject matter jurisdiction. 61 CA 137.

Subsec. (a):

Cited. 37 CA 653; judgment reversed, see 238 C. 361. Commissioner's decision denying plaintiff's petition for reconsideration does not fit within definition of “contested case” because it is not a final decision. 61 CA 137.

Subsec. (b):

Cited. 227 C. 545; 236 C. 722. Proceeding on plaintiff's motions under section did not give rise to a contested case within meaning of Uniform Administrative Procedure Act; therefore denial of plaintiff's motions was not appealable to the Superior Court; judgment of Appellate Court in 37 CA 653 reversed. 238 C. 361.