Case C-799/19: Judgment of the Court (Eighth Chamber) of 25 November 2020 (request for a preliminary ruling from the Okresný súd Košice I — Slovakia) — NI, OJ, PK v Sociálna poisťovňa (Reference for a preliminary ruling — Social policy — Directive 2008/94/EC — Articles 2 and 3 — Protection of employees in the event of the insolvency of their employer — Concepts of ‘employees’ outstanding claims’ and ‘insolvency of an employer’ — Accident at work — Death of the employee — Compensation for non-material damage — Recovery of the claim against the employer — Impossible — Guarantee institution)