A request for a rehearing shall be made in writing to: The Commissioner in a contested case heard by the Administration; The Commissioner in a contested case where the Office has been delegated authority to hear the contested case but the Commissioner has retained authority to issue the final order; or The administrative law judge in a contested case where the Office has been delegated authority to issue a final order. If the request is made: Within 10 days after the issuance of the final order, the request may be granted by the Commissioner or administrative law judge for any reason; More than 10 days after the issuance of the final order, the request may be granted only on a determination by the Commissioner or administrative law judge that the final order was a result of fraud, mistake, or inadvertence; or More than 30 days after the issuance of the final order, the request may not be granted.