Judgment of the Court (Eighth Chamber) of 12 May 2021.#Claudio Necci v European Commission.#Appeal – Civil service – Former member of the contract staff – Social security – Joint Sickness Insurance Scheme (JSIS) – Article 95 of the Conditions of Employment of Other Servants of the European Union (CEOS) – Continued membership after retirement – Condition of having been employed for more than three years – Request to join the JSIS following a transfer of pension rights – Equating the credited years of pensionable service with years of service ‐ Rejection of the request – Action for annulment – Act having an adverse effect – Order of the General Court declaring the action inadmissible