N.Y. Executive Law § 534-Y
* § 534-y. Transfer of officers, employees. 1. Any officer or employee in the state, county or municipal civil service in either state who shall transfer to service with the commission may be given one or more leaves of absence without pay and may, before the expiration of such leave or leaves of absence, and without further examination or qualification, return to the person's former position or be certified by the appropriate civil service agency for retransfer to a comparable position in such state, county, or municipal civil service if such a position is then available.