1400.8600 PREHEARING DISCOVERY.
A party may demand that any other party disclose the names and addresses of all witnesses that the other party intends to have testify at the hearing. The demand shall be in writing and shall be directed to the party or the party's attorney. Responses to the demand shall be served within ten days of receipt of the demand. Any witnesses unknown at the time of the disclosure shall be disclosed as soon as they become known. Any party that unreasonably fails to make a requested disclosure shall not be allowed to call the witness at hearing.