N.Y. Comp. Codes R. & Regs. tit. 18, § 351.1
(1) The social services official shall:
(2) Each applicant and recipient must, as a condition of eligibility for themselves or others:
(ii) furnish evidence to provide verification of those factors which affect eligibility and the amount of entitlement, including:
(v) cooperate with the social services official in fulfilling necessary reporting requirements for public assistance programs, and at a minimum provide accurate, current and complete demographic and income information required to meet Federal reporting requirements, including:
(b) information concerning minor siblings of a child on whose behalf an application for public assistance has been made or for whom public assistance is provided if the siblings reside in the household of the child.
(c) Responsibility for prompt determination of eligibility.
Upon receipt of an application for assistance, the social services official shall conduct an investigation and secure, record and evaluate the findings thereof in order to:
(2) determine the type of public assistance or care, including food stamps required, and authorize such assistance.
(d) Constitutional and statutory rights of applicants and recipients.
Any investigation or reinvestigation of eligibility shall be conducted in a manner that will not result in practices that violate an applicant's or recipient's constitutional rights. An applicant or recipient shall be permitted to appear with an attorney or other representative at any interview or conference with a representative of a social services district, whenever such interview or conference relates to questions of eligibility for public assistance and care, or the amount to which the person interviewed is or was entitled.
(a) Definition.
Investigation is a continuous process which is concerned with all aspects of eligibility for public assistance or care from the period of initial application to case closing. Investigation means the collection, verification, recording and evaluation of factual information on the basis of which a determination is made of eligibility and degree of need, or of ineligibility, for any form of public assistance or care.
(b) Responsibility for furnishing information.