TWO decisions of the Supreme Court – Benkharbouche v Secretary of State for Foreign and Commonwealth Affairs [2017] UKSC 62, [2017] 3 W.L.R. 957, and Reyes v Al-Malki [2017] UKSC 61, [2017] 3 W.L.R. 923 – demonstrate the limitations of state and diplomatic immunity in employment disputes, and raise important questions concerning the interaction between immunity and other rules of international law.