N.Y. Jud. Law § 123

§ 123. Restrictions on official referees. No official referee\ncontinued in office and serving under this article, as amended, shall\nduring his continuance in office, other than as member of a\nconstitutional convention, or the incumbent of a non-salaried office in\nthe educational system of the state hold any other public office or\ntrust, elective or appointive, practice law, act as attorney or\ncounsellor in any court of this state, or act as receiver or\ncommissioner, or unofficial referee in any court, but shall devote his\nwhole time and capacity to the duties of his office as such official\nreferee.\n