The occupant shall not employ or contract for any person to perform general cleaning, janitorial service, window cleaning, extermination or other like service in the terminal, unless advance notice in writing is given to the superintendent of the terminal as to who the proposed person is and said person is competent and responsible in the opinion of the said superintendent.
N.Y. Comp. Codes R. & Regs. Tit. 21 § 1221.10