Case C-293/18: Order of the Court (Second Chamber) of 19 March 2019 (request for a preliminary ruling from the Tribunal Superior de Justicia de Galicia — Spain) — Sindicato Nacional de CCOO de Galicia v Unión General de Trabajadores de Galicia (UGT), Universidad de Santiago de Compostela, Confederación Intersindical Galega (Reference for a preliminary ruling — Social policy — Directive 1999/70/EC — Framework agreement on fixed-term work concluded by ETUC, UNICE and CEEP — Clauses 2 and 3 — Definition of ‘fixed-term worker’ — Clause 4 — Principle of non-discrimination — Comparability of situations — Justification — Compensation in the event of the termination of a permanent employment contract on an objective ground — No compensation on expiry of a fixed-term pre-doctoral employment contract)