A New Hampshire single-member LLC operating agreement is a legal document that is implemented shortly after the formation of a limited liability company by a sole proprietor. While it is not required by law in New Hampshire, an operating agreement allows the owner to formally establish the business’ internal policies and procedures as well as ownership, management, and more. In addition, it provides a legal and financial separation between the company and the owner, which can help protect personal assets in the event of the company going bankrupt or facing litigation. Because the document only has one signatory for the sole proprietor, it is highly recommended that it is signed electronically with a timestamp or notarized to prove authenticity.