Case C-667/21, Krankenversicherung Nordrhein: Judgment of the Court (Third Chamber) of 21 December 2023 (request for a preliminary ruling from the Bundesarbeitsgericht — Germany) — ZQ v Medizinischer Dienst der Krankenversicherung Nordrhein, Körperschaft des öffentlichen Rechts (Reference for a preliminary ruling — Protection of natural persons with regard to the processing of personal data — Regulation (EU) 2016/679 — Article 6(1) — Conditions for lawful processing — Article 9(1) to (3) — Processing of special categories of data — Data concerning health — Assessment of an employee’s capacity to work — Health insurance medical service processing data concerning the health of its own employees — Conditions for such processing and whether permissible — Article 82(1) — Right to compensation and liability — Compensation for non-material harm — Compensatory function — Impact of negligence on the part of the data controller)