29 CFR § 801.70 - Implementation by the Secretary.
(a) Review of the Decision and Order by the Secretary shall not be a matter of right but of the sound discretion of the Secretary. At any time within 30 days after the issuance of the Decision and Order of the Administrative Law Judge the Secretary may, upon the Secretary's own motion or upon the acceptance of a party's petition, issue a Notice of Intent to modify or vacate the Decision and Order in question.
(b) The Notice of Intent to Modify or Vacate a Decision and Order shall specify the issue or issues to be considered, the form in which submission shall be made (i.e., briefs, oral argument, etc.), and the time within which such presentation shall be submitted. The Secretary shall closely limit the time within which the briefs must be filed or oral presentations made, so as to avoid unreasonable delay.
(c) The Notice of Intent shall be issued within thirty (30) days after the date of the Decision and Order in question.
(d) Service of the Notice of Intent shall be made upon each party to the proceeding, and upon the Chief Administrative Law Judge, in person or by certified mail.