29 C.F.R. § 18.704 Opinion on ultimate issue.
Title 29 - Labor
Testimony in the form of an opinion or inference otherwise admissible is not objectionable because it embraces an ultimate issue to be decided by the judge as trier of fact.
Title 29: Labor
PART 18—RULES OF PRACTICE AND PROCEDURE FOR ADMINISTRATIVE HEARINGS BEFORE THE OFFICE OF ADMINISTRATIVE LAW JUDGES
Subpart B—Rules of Evidence
Opinions and Expert Testimony
§ 18.704 Opinion on ultimate issue.