N.Y. Comp. Codes R. & Regs. tit. 8 § 335.17
A probationary appointment shall be an appointment for a period of one year which must be granted to a professional employee holding a professional title in which permanent appointment may be granted at a college of the university when the employee is appointed to a different professional title in which permanent appointment may be granted at the same college, or when the employee is appointed to a professional title listed in Appendix B-1, infra, of this Part at the same college. In addition, three-month probationary appointments shall be provided on initial appointment of any full-time professional in a teaching hospital position at a SUNY Article 28 facility whose professional obligation will include patient facing duties (in-person patient care or service). A probationary appointment may be terminated at any time in accordance with section 335.9 or 335.15 of this Part.
N.Y. Comp. Codes R. & Regs. Tit. 8 § 335.17