After initiation of a proceeding in which a respondent or other party is entitled to a hearing on the merits, a party, upon written request made to another party, prior to the hearing and within 30 days after service by the agency of the initial pleading or within 15 days after the service of an additional pleading, is entitled to (1) obtain the names and addresses of witnesses to the extent known to the other party, including, but not limited to, those intended to be called to testify at the hearing, and (2) inspect and make a copy of any of the following in the possession or custody or under the control of the other party:

1. (a) A statement of a person, other than the respondent, named in the initial administrative pleading, or in any additional pleading, when it is claimed that the act or omission of the respondent as to this person is the basis for the administrative proceeding;
2. (b) A statement pertaining to the subject matter of the proceeding made by any party to another party or person;
3. (c) Statements of witnesses then proposed to be called by the party and of other persons having personal knowledge of the acts, omissions, or events which are the basis for the proceeding, not included in subdivision (a) or (b) above;
4. (d) All writings, including, but not limited to, reports of mental, physical, and blood examinations and things which the party then proposes to offer in evidence;
5. (e) Any other writing or thing which is relevant and which would be admissible in evidence;

6. (f) Investigative reports made by or on behalf of the agency or other party pertaining to the subject matter of the proceeding, to the extent that these reports (1) contain the names and addresses of witnesses or of persons having personal knowledge of the acts, omissions, or events which are the basis for the proceeding, or (2) reflect matters perceived by the investigator in the course of their investigation, or (3) contain or include by attachment any statement or writing described in subdivisions (a) to (e), inclusive, or summary thereof.

   For the purpose of this section, “statements” include written statements by the person signed or otherwise authenticated by the person, stenographic, mechanical, electrical, or other recordings, or transcripts thereof, of oral statements by the person, and written reports or summaries of these oral statements.

   Nothing in this section shall authorize the inspection or copying of any writing or thing which is privileged from disclosure by law or otherwise made confidential or protected as the attorney’s work product.

   Discovery of all categories of evidence specified in this section may be conducted electronically by means prescribed by an administrative law judge.