N.Y. General Business Law § 492
1. A place of business open to the general public for the sale of goods or services that has a toilet facility for its employees shall allow any individual who is lawfully on the premises of such place of business to use that toilet facility during normal business hours, even if the place of business does not normally make the employee toilet facility available to the public, provided that all of the following conditions are met:
2. Reasonable evidence that an individual has an eligible medical condition or uses an ostomy device shall include, but not be limited to, at the option of the individual:
3. The department of health shall develop a standard electronic form that may be signed by a health care provider as evidence of the existence of an eligible medical condition. The form shall be posted on the department's website in a printable format and include the following information:
(e) the following statements: