New Jersey CJA Form 21: Authorization and Voucher for Expert and Other Services is a standardized form used in New Jersey federal court proceedings. It must be completed and signed by an authorized judicial officer for payment of expert and other services provided on behalf of a criminal defendant. The form requires information about the service provider, the cost of the services, the court's authorization for payment, and the defense attorney's certification that the services were necessary and reasonable. There are two types of New Jersey CJA Form 21: Authorization and Voucher for Expert and Other Services. The first type is the initial form, which must be completed and signed by a judicial officer prior to any services being provided. The second type is a voucher form, which must be completed and signed by the defense attorney, the service provider, and the court's financial officer at the conclusion of services.