Factual and Procedural Background
This appeal concerns British Gas's challenge to an Employment Appeal Tribunal (EAT) order dismissing its appeal against a judgment of the Leicester Employment Tribunal (ET). The core issue involved statutory interpretation of holiday pay calculation for an employee, referred to as the Respondent, whose remuneration included a basic salary and results-based commission. The Respondent claimed that his holiday pay should include commission, not just basic pay. The ET held that the Working Time Regulations 1998 (WTR), which implement the EU Working Time Directive domestically, could be interpreted to include commission in holiday pay, but only by reading additional words into the legislation. The EAT upheld this decision, and British Gas was granted permission to appeal further due to the significance of the issue. The case arose from a claim initially presented in 2012, stayed pending a preliminary ruling from the Court of Justice of the European Union (CJEU), which confirmed that EU law requires holiday pay to include commission elements reflecting normal remuneration.
Legal Issues Presented
- Whether the holiday pay of an employee with statutorily defined "normal working hours" whose remuneration includes results-based commission should be calculated solely by reference to basic pay or must also include commission elements.
- Whether the Working Time Regulations 1998 can be interpreted in conformity with article 7 of the EU Working Time Directive to require inclusion of commission in holiday pay.
- Whether it is permissible for a domestic court to read words into the WTR to achieve conformity with EU law, or whether such an interpretation would amount to unlawful amendment or "judicial vandalism".
Arguments of the Parties
Appellant's Arguments (British Gas)
- The domestic statutory scheme, particularly section 221(2) of the Employment Rights Act 1996 (ERA) as incorporated by the WTR, restricts holiday pay calculation to basic pay, excluding results-based commission.
- Applying a conforming interpretation to include commission would go against the grain and fundamental features of the legislation, amounting to judicial amendment rather than interpretation.
- Such an interpretation would raise practical difficulties, including determining appropriate reference periods and handling variable commission structures.
- The principle of legal certainty and non-retroactivity in EU law prohibits reinterpretation that contradicts clear domestic statutory language.
- Precedent decisions such as Evans v. The Malley Organisation Ltd and Bamsey v. Albon support the view that the WTR do not permit inclusion of commission in holiday pay for employees like the Respondent.
- The decision in Bear Scotland Ltd v. Fulton was wrongly decided and should not be followed.
Respondent's Arguments
- EU law, specifically article 7 of the Working Time Directive as interpreted by the CJEU, requires holiday pay to reflect a worker's normal remuneration, including commission.
- The WTR must be interpreted, so far as possible, in conformity with EU law, even if this requires reading in words to the domestic legislation.
- The interpretative obligation is broad and far-reaching and does not depend on ambiguity in the legislation.
- The WTR were enacted solely to implement the Directive, and it is presumed Parliament intended to comply fully with the Directive's requirements, including those elucidated after enactment.
- Precedents such as Bear Scotland and decisions on conforming interpretation principles support reading commission into holiday pay calculations.
- Practical difficulties and concerns about legal certainty do not preclude a conforming interpretation.
Secretary of State for Business, Innovation and Skills
- Supported the Respondent's case that a conforming interpretation of the WTR is both possible and correct.
- Rejected arguments that a conforming interpretation would offend principles of non-retroactivity or legal certainty.
- Emphasized the presumption that Parliament intended to fully implement the Directive, including later judicial clarifications.
Table of Precedents Cited
| Precedent |
Rule or Principle Cited For |
Application by the Court |
| Lock v. British Gas Trading Ltd (C-539/12) |
EU law requires holiday pay to include commission reflecting normal remuneration under article 7 of the Working Time Directive. |
Confirmed that domestic law excluding commission conflicted with EU law; holiday pay must include commission. |
| Evans v. The Malley Organisation Ltd [2003] ICR 432 |
Interpreted domestic law to exclude commission from holiday pay where remuneration does not vary with amount of work done. |
Held that domestic statutory interpretation confined holiday pay to basic salary, excluding commission. |
| Bamsey and others v. Albon Engineering and Manufacturing plc [2004] EWCA Civ 359 |
Defined 'normal working hours' and held that non-guaranteed overtime was not part of normal working hours for holiday pay calculation. |
Held that WTR incorporated ERA provisions excluding certain payments from holiday pay; suggested no EU requirement for normal remuneration equivalence. |
| Bear Scotland Ltd v. Fulton [2015] ICR 221 |
Held that non-guaranteed overtime must be included in holiday pay under article 7 of the Directive. |
Interpreted WTR to conform with EU law by reading in words to include overtime in holiday pay calculation. |
| Marleasing S.A. v. LA Comercial Internacional de Alimentacion S.A. (C-106/89) |
Established principle of conforming interpretation: national law must be interpreted as far as possible in light of the Directive's wording and purpose. |
Guided court's approach to interpreting WTR in conformity with EU law. |
| Ghaidan v. Godin-Mendoza [2004] UKHL 30 |
Explained the scope and limits of conforming interpretation under section 3 of the Human Rights Act 1998. |
Provided principles on when courts may read in words to comply with rights without overstepping into amendment. |
| Vodafone 2 v. Revenue and Customs Commissioners [2009] EWCA Civ 446 |
Summarized principles of broad and far-reaching obligation to interpret domestic legislation consistently with EU law. |
Supported wide scope for conforming interpretation, subject to not violating the grain of legislation. |
| Swift (trading as A Swift Move) v. Robertson [2014] UKSC 50 |
Reaffirmed that national courts must interpret domestic law in light of the Directive's wording and purpose. |
Reinforced obligation to construe legislation consistently with EU law objectives. |
| United States of America v. Nolan [2015] UKSC 63 |
Confirmed that domestic courts should construe legislation intended to give effect to a Directive consistently with the Directive. |
Emphasized the importance of interpreting domestic law to conform with EU law where possible. |
| Pickstone v. Freemans plc [1989] AC 66 |
Allowed courts to imply words into legislation to make it compatible with Convention rights and EU law. |
Used as example of legitimate conforming interpretation going with the grain of legislation. |
| Litster v. Forth Dry Dock & Engineering Co Ltd [1990] 1 AC 546 |
Similar to Pickstone, concerning implied meanings to comply with EU law. |
Illustrated permissible scope of conforming interpretation. |
| Regina v. British Coal Corporation, Ex parte Vardy and Others [1993] ICR 720 |
Demonstrated limits of conforming interpretation where it would contradict clear statutory language. |
Referenced in arguments about contra legem limits on interpretation. |
| Centrosteel SrL v. Adipol GmbH (C-456/98) |
Clarified that national courts are not required to interpret national law contrary to express terms of legislation. |
Supported appellant’s argument on limits of conforming interpretation. |
| Adeneler and others v. Ellinikos Organismos Galaktos (C-212/04) |
Outlined limits on interpretation, including principles of legal certainty and non-retroactivity. |
Referred to in discussions of practical and legal limits on conforming interpretation. |
| Dansk Industri v. Estate of Karsten Eigil Rasmussen [2016] IRLR 552 |
Explained contra legem principle limiting conforming interpretation where clear domestic language conflicts with Directive. |
Central to the appellant's argument that conforming interpretation is barred here. |
| Pfeiffer and others v. Deutsches Rotes Kreuz, Kreisverband Waldshut eV (C-397-403/01) |
Confirmed obligation of national courts to interpret domestic law fully in light of Directive's wording and purpose. |
Used to support presumption Parliament intended full compliance with Directive. |
| UK Coal Mining Ltd v. National Union of Mineworkers (Northumberland Area) and another [2008] ICR 163 |
Discussed flexible interpretative approach required when construing legislation implementing EU law. |
Referenced in arguments about limits and scope of conforming interpretation. |
| Rowstock Ltd and another v. Jessemey [2014] EWCA Civ 185 |
Example of correcting a drafting error by reading in words consistent with legislative intent and EU obligations. |
Illustrated permissible conforming interpretation where legislation failed to reflect EU requirements. |
| Duke v. GEC Reliance Ltd [1988] ICR 339 |
Held that courts cannot reinterpret legislation to enforce Directives that have no direct effect between individuals. |
Distinguished as inapplicable because WTR were enacted to implement the Directive. |
| Revenue and Customs Commissioners v. IDT Card Services Ireland Ltd [2006] EWCA Civ 29 |
Confirmed courts’ duty to interpret legislation compatibly with EU law, including reading in words where appropriate. |
Supported respondent’s argument on the breadth of conforming interpretation. |
Court's Reasoning and Analysis
The court began by acknowledging the binding nature of the CJEU’s ruling that article 7 of the Working Time Directive requires holiday pay to reflect a worker’s normal remuneration, including commission. It identified that under a purely domestic interpretation of the WTR and the incorporated ERA provisions, the Respondent’s holiday pay was limited to basic salary, excluding commission, as confirmed in Evans.
The court then examined the principle of conforming interpretation established by Marleasing and developed in UK case law, particularly Ghaidan and Vodafone 2, which obliges courts to interpret domestic legislation so far as possible in conformity with EU law, even if this requires reading in words, provided such interpretation does not contradict the fundamental features or underlying thrust ('grain') of the legislation.
British Gas argued that the WTR’s incorporation of the ERA provisions, especially section 221(2), was clear and definitive in excluding commission from holiday pay, and that reading in words to include commission would amount to impermissible judicial amendment ('judicial vandalism'). The court considered this a serious objection but found that the WTR were enacted solely to implement the Directive and must be presumed to have intended to comply fully with it, including later judicial clarifications of the Directive’s requirements.
The court acknowledged that the WTR and ERA provisions generally provide for holiday pay to reflect normal remuneration in most cases, but that the Respondent’s case fell within an anomalous exception where commission was excluded. It found no evidence that Parliament deliberately intended this exception or intended to discriminate against such workers.
Consequently, the court concluded that the WTR could and should be interpreted by reading in words to include commission in holiday pay calculations for employees like the Respondent, as this interpretation aligns with the underlying purpose of the legislation and the Directive, and does not cross the constitutional boundary into amendment.
The court also rejected arguments that such interpretation would breach principles of legal certainty or non-retroactivity, noting that conforming interpretations inherently have retrospective effect and need not be precisely formulated.
The court declined to address broader questions regarding other types of commission or bonus arrangements, limiting its decision strictly to the facts of the Respondent’s case.
Holding and Implications
The court’s final decision was to DISMISS THE APPEAL, thereby upholding the ET and EAT decisions that the WTR should be interpreted to include results-based commission in the calculation of holiday pay for employees with normal working hours whose remuneration includes such commission.
The direct effect is that employees in similar circumstances to the Respondent are entitled to holiday pay reflecting their normal remuneration, including commission elements. This decision clarifies the scope of conforming interpretation in the context of the WTR and EU law but does not establish broader precedents regarding other remuneration types or calculation methods. The court explicitly limited its ruling to the facts before it and recognized that other cases may raise distinct issues not resolved by this judgment.