On the Applicant’s claim that UNDT committed an error of procedure by not allowing him to submit an affidavit from his former supervisor, UNAT held that UNDT properly exercised its broad discretion under Article 18(1) of its Rules of Procedure in determining the admissibility as well as the evidentiary value and weight of the proffered affidavit. UNAT held that UNDT’s conclusions were consistent with the evidence. UNAT held that the Appellant did not meet the burden of proof for demonstrating an error in the judgment such as to warrant its reversal. UNAT dismissed the appeal and affirmed the...