N.Y. RSS Law § 651

§ 651. Reduction of retirement age. a. A member described in section\nsix hundred fifty of this article may, subject to the provisions of\nsubdivision b of this section (and notwithstanding the provisions for\nbenefit reduction contained in subdivision a of section four hundred\nforty-two and subdivision c of section five hundred four of this\nchapter), retire without reduction of his or her service retirement\nbenefit prior to the attainment of the normal retirement age in\naccordance with the following schedule:\n (i) For each full year of covered employment occurring prior to\nJanuary first, nineteen hundred seventy-one, his or her normal\nretirement age shall be reduced by six months; and\n (ii) For each full year of covered employment occurring prior to\nJanuary first, two thousand nine which is subsequent to December\nthirty-first, nineteen hundred seventy, his or her normal retirement age\nshall be reduced by four months.\n b. Provided however, that nothing herein:\n (i) Shall permit a member of Tier one to retire, other than for\ndisability, prior to the attainment of age fifty, or a member of Tier\ntwo, three or four to retire, other than for disability, prior to the\nattainment of age fifty-five; and\n (ii) Shall be construed to affect any other condition or requirement\nof any general, special or local law.\n