Judgment of the General Court (Eighth Chamber) of 12 December 2019.#OS v European Commission.#Civil Service — Reform of the Staff Regulations and of the CEOS that entered into force on 1 January 2014 — Regulation (EU, Euratom) No 1023/2013 — Solidarity levy applicable from 1 January 2014 — Suspension of application of the method for updating remuneration for 2013 and 2014.#Case T-528/16.