(1) A determination of amount of benefits potentially payable under this title is not a basis for appeal. However, the determination is subject to request by the employee on family and medical leave for redetermination by the commissioner at any time within one year from the date of delivery or mailing of such determination, or any redetermination thereof. A redetermination shall be furnished to the employee in writing and provide the basis for appeal.

(2) A determination of denial of benefits becomes final, in the absence of timely appeal therefrom. The commissioner may redetermine such determinations at any time within one year from delivery or mailing to correct an error in identity, omission of fact, or misapplication of law with respect to the facts.

(3) A determination of allowance of benefits becomes final, in the absence of a timely appeal therefrom. The commissioner may redetermine such allowance at any time within two years following the eligibility period in which such allowance was made in order to recover any benefits for which recovery is provided under this title.

(4) A redetermination may be made at any time: (a) To conform to a final court decision applicable to either an initial determination or a determination of denial or allowance of benefits; (b) in the event of a back pay award or settlement affecting the allowance of benefits; or (c) in the case of misrepresentation or willful failure to report a material fact. Written notice of any such redetermination shall be promptly given by mail or delivered to such interested parties as were notified of the initial determination or determination of denial or allowance of benefits and any new interested party or parties who, pursuant to such rule as the commissioner may adopt, would be an interested party.