The main legal issue in this case is whether there was a duly constituted contract between the parties. The Respondent made the bare assertion that the communication dated 21 September 2007 mistakenly referred to the cancellation of his appointment, whereas it was a withdrawal of the offer. Therefore, according to the Respondent no contract was created, the Applicant was not a staff member, and his application is not receivable. The Applicant submitted that there was a duly constituted contract between the parties. UNDT found that the offer of appointment accepted by the Applicant and the...