Judgment of the General Court (First Chamber) of 2 September 2020.#IR v European Commission.#Civil service – Officials – Rights and obligations of officials – Secondment in the interests of the service – Article 37, first paragraph, heading (a), first indent, of the Staff Regulations – Article 38 of the Staff Regulations – Refusal to extend a secondment – Duty to have regard for the welfare of officials – Rights of the defence.#Case T-131/20.