After you get your EIN, you must register with New York State. Complete all required parts of the form. •.The New Hire forms below must be completed prior to meeting with your Compliance Specialist on the day of your scheduled processing appointment. Before hiring employees in New York, you need to fill out a New York State (NYS) Employer Registration Form and get unemployment insurance. To hire employees in New York, you must first register your business online. Click below for up-to-date forms and documents for use in submitting address or name changes, W4 forms for adjusting withholding status when needed.