N.Y. General City Law § 46: Registration; when required

§ 46. Registration; when required. Every employing or master plumber

carrying on his trade, business or calling in any city of this state

shall register his name and address at the office of the board of health

or the examining board of plumbers if so designated by local law of the

city in which he shall conduct such business, under such rules as the

respective boards of health or the local board of examining plumbers, in

conjunction with the board of health of each of the cities shall

prescribe, and thereupon he shall be entitled to receive a certificate

of such registration, provided, however, that such employing or master

plumber shall at the time of applying for such registration hold a

certificate of competency from an examining board of plumbers.