Notwithstanding the provisions of any municipal charter or any special act to the contrary, any municipality which has established a retirement system for its officers and employees and their beneficiaries may, by ordinance, provide a cost of living allowance for such persons or their surviving widows or beneficiaries in an amount deemed appropriate by the municipality.
Conn. Gen. Stat. § 7-450b
(P.A. 89-162, S. 2, 3.)