N.Y. Lab. Law § 918
A professional employer organization shall not engage in business from offices in this state or enter into any arrangement with a person for the purpose of providing professional employer services as described in section nine hundred twenty-two of this article to persons in this state unless the professional employer organization is registered under this article. No professional employer organization or person shall use the name or title "professional employer organization", "PEO", "staff leasing company", "employee leasing company", "registered staff leasing company" or "staff leasing services company", or otherwise represent that it is registered under this article unless the entity or person is registered under this article. A professional employer organization that does not comply with the provisions of this article shall not be a registered professional employer organization in this state.
N.Y. Lab. Law § 918