The commissioner or an examiner, in all cases where the testimony of witnesses is to be preserved, shall have the right to have the case taken down and transcribed by a stenographer, and the stenographer so employed shall be duly sworn. The stenographer's certificate that the transcript of such evidence is correct, together with the official certificate of the commissioner or examiner that he has read the same and that it is, in his opinion, correct, shall entitle such transcript, or a certified copy thereof, to be received in evidence as relevant, material and competent. Such stenographer shall be paid at the same rates as that then currently in effect for similar duties performed by the chancery court reporter for the county in which the testimony of the witnesses is to be taken and preserved. The stenographer shall be paid out of the department maintenance fund on voucher approved by the commissioner or examiner employing such stenographer, accompanied with an itemized statement of services rendered.