The presiding officer may admit, weigh, and consider hearsay evidence. In evaluating hearsay, including hearsay which has been admitted without objection, the presiding officer should determine whether it is supported by circumstantial guarantees of trustworthiness, such as other corroborating evidence. A factual finding cannot be based solely on hearsay unless permitted by statute or where no objection has been made to the admission of the hearsay.
Idaho Admin. Code r. 62.01.01.478