As soon as may be after the conclusion of any hearing, but no later than one hundred twenty days after such conclusion, the administrative law judge shall send to each party a written copy of the administrative law judge’s findings and award. The administrative law judge shall, as part of the written award, inform the employee or the employee’s dependent, as the case may be, of any rights the individual may have to an annual cost-of-living adjustment or to participate in a rehabilitation program administered by the Department of Aging and Disability Services under the provisions of this chapter. The administrative law judge shall retain the original findings and award in said administrative law judge’s office. If no appeal from the decision is taken by either party within twenty days thereafter, such award shall be final and may be enforced in the same manner as a judgment of the Superior Court. The court may issue execution upon any uncontested or final award of an administrative law judge in the same manner as in cases of judgments rendered in the Superior Court; and, upon the filing of an application to the court for an execution, the administrative law judge in whose office the award is on file shall, upon the request of the clerk of said court, send to the clerk a certified copy of such findings and award. In cases where, through the fault or neglect of the employer or insurer, adjustments of compensation have been unduly delayed, or where through such fault or neglect, payments have been unduly delayed, the administrative law judge may include in the award interest at the rate prescribed in § 37-3a and a reasonable attorney’s fee in the case of undue delay in adjustments of compensation and may include in the award in the case of undue delay in payments of compensation, interest at twelve per cent per annum and a reasonable attorney’s fee. Payments not commenced within thirty-five days after the filing of a written notice of claim shall be presumed to be unduly delayed unless a notice to contest the claim is filed in accordance with § 31-297. In cases where there has been delay in either adjustment or payment, which delay has not been due to the fault or neglect of the employer or insurer, whether such delay was caused by appeals or otherwise, the administrative law judge may allow interest at such rate, not to exceed the rate prescribed in § 37-3a, as may be fair and reasonable, taking into account whatever advantage the employer or insurer, as the case may be, may have had from the use of the money, the burden of showing that the rate in such case should be less than the rate prescribed in § 37-3a to be upon the employer or insurer. In cases where the claimant prevails and the administrative law judge finds that the employer or insurer has unreasonably contested liability, the administrative law judge may allow to the claimant a reasonable attorney’s fee. No employer or insurer shall discontinue or reduce payment on account of total or partial incapacity under any such award, if it is claimed by or on behalf of the injured person that such person’s incapacity still continues, unless such employer or insurer notifies the administrative law judge and the employee of such proposed discontinuance or reduction in the manner prescribed in § 31-296 and the administrative law judge specifically approves such discontinuance or reduction in writing. The administrative law judge shall render the decision within fourteen days of receipt of such notice and shall forward to all parties to the claim a copy of the decision not later than seven days after the decision has been rendered. If the decision of the administrative law judge finds for the employer or insurer, the injured person shall return any wrongful payments received from the day designated by the administrative law judge as the effective date for the discontinuance or reduction of benefits. Any employee whose benefits for total incapacity are discontinued under the provisions of this section and who is entitled to receive benefits for partial incapacity as a result of an award, shall receive those benefits commencing the day following the designated effective date for the discontinuance of benefits for total incapacity. In any case where the administrative law judge finds that the employer or insurer has discontinued or reduced any such payment without having given such notice and without the administrative law judge having approved such discontinuance or reduction in writing, the administrative law judge shall allow the claimant a reasonable attorney’s fee together with interest at the rate prescribed in § 37-3a on the discontinued or reduced payments.