29 CFR § 1955.41 - Decision of the administrative law judge.
(a) Within 30 days after receipt of notice that the transcript of the testimony has been filed with the administrative law judge, or such additional time as the administrative law judge may allow, each party may file with the administrative law judge proposed findings of fact, conclusions of law, and rules or orders, together with a supporting brief expressing the reasons for such proposals. Such proposals and brief shall be served on all other parties and shall refer to all portions of the record and to all authorities relied upon in support of each proposal.
(1) Within a reasonable time after the time allowed for the filing of proposed findings of fact, conclusions of law, and rules or orders, the administrative law judge shall make and serve upon each party his initial decision which shall become final upon the 30th day after service thereof unless exceptions are filed thereto.
(2) The decision of the administrative law judge shall be based solely upon substantial evidence on the record as a whole and shall state all facts officially noticed and relied upon. The decision of the administrative law judge shall include:
(i) A statement of the findings of fact and conclusions of law, with reasons and bases therefor upon each material issue of fact, law, or discretion presented on the record;
(ii) Reference to any material fact based on official notice; and
(iii) The appropriate rule, order, relief, or denial thereof.