Neb. Rev. Stat. § 38-2129

(1) A person who needs to obtain the required three thousand hours of supervised experience in social work as specified in section 38-2128 to qualify for certification as a master social worker shall obtain a provisional certification as a master social worker. To qualify for a provisional certification as a master social worker, such person shall: (a) Have a doctorate or master's degree in social work from an approved educational program; and (b) Apply prior to earning the three thousand hours of supervised experience. (2) A provisional master social worker certification shall expire upon receipt of certification as a master social worker or five years after the date of issuance, whichever comes first. (3) A person who holds a provisional certification as a master social worker shall inform all clients that he or she holds a provisional certification and is practicing social work under supervision and shall identify the supervisor. Failure to make such disclosure is a ground for discipline as set forth in section 38-2139 .