Summary
A diplomat’s ordinary employment of a domestic worker is incidental to daily life and is not a commercial activity within article 31(1)(c) of the Vienna Convention on Diplomatic Relations 1961. The position is materially different where the diplomat coerces a worker into providing domestic services in circumstances of modern slavery and thereby obtains a substantial financial benefit.
Such systematic exploitation for personal profit is a commercial activity outside the diplomat’s official functions. An employment claim relates to that activity where its subject matter has a significant connection with the exploitation. The unlawfulness of the conduct does not itself make the activity commercial. Nor does the possible need for a factual hearing prevent the commercial activity exception from applying.
Factual background
The appellant, a migrant domestic worker, brought employment tribunal claims for unpaid wages and breaches of employment rights against the respondent, a serving diplomat. She alleged that he had confined, isolated and psychologically abused her, required exceptionally long working hours, and paid only a small fraction of her contractual entitlement. For the strike-out application, those allegations had to be assumed to be true.
The Employment Tribunal held that the claim fell within the commercial activity exception to diplomatic immunity and refused to strike it out. The Employment Appeal Tribunal allowed the diplomat’s appeal: [2020] ICR 1185. It certified a leapfrog appeal to the Supreme Court.
The central issue was whether exploiting a domestic worker in circumstances of modern slavery constituted a “commercial activity exercised” by a diplomatic agent outside his official functions under article 31(1)(c) of the Vienna Convention on Diplomatic Relations 1961.
Held
Appeal allowed by a majority of three to two. Lord Briggs and Lord Leggatt, with whom Lord Stephens agreed, held that the assumed facts brought the claim within article 31(1)(c) of the Vienna Convention on Diplomatic Relations 1961. The Employment Tribunal’s refusal to strike out the claim was reinstated. Unless the allegations were admitted, an evidential hearing was required to determine their truth.
Ordinary employment of a domestic worker by a diplomat is not itself a commercial activity. Contracts for domestic and other services incidental to ordinary daily life fall within the rationale of personal diplomatic immunity. They enable diplomats and their families to live in the receiving state without the hindrance of civil litigation. Such private activities are nevertheless outside the diplomat’s official functions.
The alleged exploitation was qualitatively different from voluntary employment. The worker was allegedly confined and isolated, subjected to psychological abuse, deprived of pay and made dependent upon the diplomatic household. The diplomat’s control over her person and labour was capable of amounting to domestic servitude and forced labour. The precise classification as trafficking, servitude or forced labour was unnecessary.
The alleged conduct produced a substantial benefit in money’s worth. The household obtained services over a prolonged period for a fraction of their contractual and market value. A deliberate and systematic activity extracting coerced labour for such personal profit was properly characterised as a commercial activity. Its unlawfulness or incompatibility with human rights was not, by itself, what made it commercial.
The words “relating to” require a significant connection between the subject matter of the action and the commercial activity. The wage, working-time and minimum-wage claims arose directly from and formed part of the alleged exploitation. It was unnecessary for trafficking, servitude or forced labour to constitute a cause of action within the Employment Tribunal’s jurisdiction.
The possibility of a disputed and intrusive factual inquiry did not narrow the exception. The states parties necessarily contemplated that courts might have to determine whether an alleged activity was commercial.
Lord Hamblen and Lady Rose dissented. They considered that the conditions of domestic employment could not convert an activity incidental to household life into a commercial activity. In their view, neither subsequent international instruments concerning modern slavery nor state practice established the broader meaning adopted by the majority.
The court’s approach to earlier authorities
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Appellate history
United Kingdom Supreme Court: By a majority of three to two, allowed the leapfrog appeal and reinstated the Employment Tribunal’s refusal to strike out the claim: [2022] UKSC 20 .
Employment Appeal Tribunal: Soole J allowed the diplomat’s appeal and held that diplomatic immunity required the claim to be struck out. He certified the case as suitable for a leapfrog appeal: [2020] ICR 1185.
Employment Tribunal: Held that the alleged conduct fell within the commercial activity exception and refused to strike out the claim.
Appeal route
- Appealed from[2020] ICR 1185This appealappeal allowed by a majority (3–2); employment tribunal decision reinstated
- This judgment [2022] UKSC 20 United Kingdom Supreme Court
Key cases cited
30 authorities cited.
- Al-Malki v Reyes (Secretary of State for Foreign and Commonwealth Affairs intervening) [2017] UKSC 61
- Hounga v Allen and another [2014] UKSC 47
- Jones (Respondent) v. Ministry of Interior Al-Mamlaka Al-Arabiya AS Saudiya (the Kingdom of Saudi Arabia) (Appellants)Mitchell and others (Respondents) v. Al-Dali and others and Ministry of Interior Al-Mamlaka Al-Arabiya AS Saudiya (the Kingdom of Saudi Arabia) (Appellants)Jones (Appellant) v. Ministry of Interior Al-Mamlaka Al-Arabiya AS Saudiya (the Kingdom of Saudi Arabia) (Respondents) (Conjoined Appeals) [2006] UKHL 26
- A (FC) and others (FC) (Appellants) v. Secretary of State for the Home Department (Respondent) (2004)A and others (Appellants) (FC) and others v. Secretary of State for the Home Department (Respondent) (Conjoined Appeals) [2005] UKHL 71
- Fothergill v Monarch Airlines Ltd [1981] AC 251
- Reyes & Anor v Al-Malki & Anor [2015] EWCA Civ 32
- London Borough of Barnet v AG & Ors [2021] EWHC 1253 (Fam)
- A Local Authority v AG [2020] EWFC 18
- Ajayi v Abu & Anor (Rev 1) [2017] EWHC 3098 (QB)
- B, R (on the application of) v The Secretary of State for the Home Department [2016] EWHC 786 (Admin)
- Queen v Tang [2008] HCA 39
- Chowdury v Greece Application No 21884/15, 30 March 2017
- Fun v Pulgar 993 F Supp 2d 470 (DNJ 2014)
- Germany v Italy: Greece Intervening (Jurisdictional Immunities of the State) [2012] ICJ Rep 99
- CN and V v France Application No 67724/09, 11 October 2012
- Montuya v Chedid 779 F Supp 2d 60 (DDC 2011)
- Rantsev v Cyprus and Russia (2010) 51 EHRR 1
- Dispute regarding Navigational and Related Rights (Costa Rica v Nicaragua) [2009] ICJ Rep 213
- Sabbithi v Al Saleh 605 F Supp 2d 122 (DDC 2009)
- Gonzalez Paredes v Vila 479 F Supp 2d 187 (DDC 2007)
- Siliadin v France (2006) 43 EHRR 16
- Park v Shin 313 F 3d 1138 (9th Cir 2002)
- El Hadad v Embassy of the United Arab Emirates 216 F 3d 29 (DC Cir 2000)
- Propend Finance Pty Ltd v Sing (1997) 111 ILR 611
- Tabion v Mufti 73 F 3d 535 (4th Cir 1996)
- Ramos v US Government 4 May 1994
- In re Canada Labour Code [1992] 2 SCR 50
- Fonseca v Larren 30 January 1991
- United States v Kozminski 487 US 931 (1988)
- Van der Mussele v Belgium (1983) 6 EHRR 163
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Cases citing this case
8 later cases · 4 positive · 3 neutral · 1 caution
Most senior citing decisions:
- The Kingdom of Spain v Infrastructure Services Luxembourg S.À.R.L. and another [2026] UKSC 9 considered
- Charlotte Finch v R [2026] EWCA Crim 477 approved
- AG (A Child), Re [2022] EWCA Civ 1505 distinguished
- LBZ, R (on the application of) v Secretary of State for the Home Department [2026] EWHC 2409 (Admin)
- CC/Devas (Mauritius) Ltd & Ors v Republic of India [2025] EWHC 964 (Comm)
- The Republic of Mozambique (acting through its Attorney General) v Credit Suisse International & Ors [2023] EWHC 2215 (Comm)
- THE INDEPENDENT MONITORING AUTHORITY FOR THE CITIZENS' RIGHTS AGREEMENTS v SECRETARY OF STATE FOR THE HOME DEPARTMENT [2022] EWHC 3274 (Admin)
- The British Council v Ana-Maria Beldica [2024] EAT 92
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