N.Y.C. Admin. Code § 11-1777: § 11-1777 Designation of third parties to perform acts required of employers.

In case a fiduciary, agent, or other person has the control, receipt, custody, or disposal of, or pays the wages of an employee or group of employees, employed by one or more employers, the tax commission, under regulations promulgated by it, is authorized to designate such fiduciary, agent, or other person to perform such acts as are required of employers under this chapter and as the tax commission may specify. Except as may be otherwise prescribed by the tax commission, all provisions of law (including penalties) applicable in respect of an employer shall be applicable to a fiduciary, agent, or other person so designated but, except as so provided, the employer for whom such fiduciary, agent, or other person acts shall remain subject to the provisions of law (including penalties) applicable in respect of employers.