gr-efkaSource-cited draft Use this skill whenever asked about Greek EFKA (e-EFKA / Ενιαίος Φορέας Κοινωνικής Ασφάλισης) social insurance contributions for self-employed individuals. Trigger on phrases like "EFKA contributions", "Greek social insurance", "ελεύθερος επαγγελματίας ασφάλιση", "EFKA categories", "self-employed Greece insurance", or any question about social insurance obligations for a self-employed client in Greece. Covers the 6-category system for main pension, healthcare, and supplementary pension. ALWAYS read this skill before touching any Greece social contributions work.