N.Y. Public Authorities Law § 3403
1.
2. The corporation shall recognize the existing certified or recognized employee organizations for those persons who become employees of the Nassau Health Care Corporation pursuant to paragraph (a) or (b) of subdivision one of this section as the exclusive collective bargaining representatives for such employees, who shall remain in the existing bargaining unit. The corporation shall be bound by all existing collective bargaining agreements with such employee organizations; all existing terms and conditions of employment shall remain in effect until altered by the terms of a successor contract; successor employees to the positions held by such employees shall, consistent with the provisions of article fourteen of the civil service law, be included in the same unit as their predecessors. Employees serving in positions in newly created titles shall be assigned to the appropriate bargaining unit. Nothing contained herein shall be construed to affect: