All decisions and orders of the board in contested cases shall be in writing and shall be signed by the director. If the decision or order does not adopt, in whole or in part, the proposal for decision submitted by the administrative law judge, the decision or order shall include findings of fact and conclusions of law, separately stated. The date of rendition shall be stated in the decision or order. Parties shall be notified either personally or by mail of any decision or order. On written request, a copy of the decision or order shall be delivered or mailed to any party and to his or her attorney of record.