The commission, member of the commission, or hearing examiner conducting the hearing shall have the power to reasonably and fairly amend any written complaint at any time prior to the issuance of an order based on the complaint. The respondent shall have like power to amend its answer to the original or amended complaint at any time prior to the issuance of an order. The commissioner assigned to the preliminary hearing of any complaint shall take no part in the final hearing except as a witness upon competent matters and will have no part in the determination or decision of the case after hearing.
R.I. Gen. Laws § 28-5-19