Neb. Rev. Stat. § 71-3202

No person shall, in the State of Nebraska after July 1, 1959, by any direct or indirect means, engage in the private detective business, as a private detective, as a private detective agency, or as a plain clothes investigator, act or assume to act as a licensee, or represent himself to be a licensee unless such person is duly licensed and holds a valid license under the provisions of sections 71-3201 to 71-3213 ; and no person shall in the State of Nebraska falsely represent that he is employed by or represents a licensee.