Comparative Analysis ofthe Bona Fides PrincipleBetween Azerbaijan andthe United Kingdom

I. Introduction

Azerbaijan’s Civil Code explicitly codifies good faith across several provisions. Article 5.3 requires all civil law subjects to exercise rights and fulfil obligations honestly, Article 425.1 imposes a duty of good faith in contractual performance, and Article 425.2 obliges parties to cooperate and refrain from actions that hinder the contract’s purpose. Despite this, the principle is applied inconsistently in practice, resulting in unfairness and a lack of transparency. English contract law, by contrast, has historically resisted an overarching duty of good faith, prioritising contractual freedom and legal certainty. Over time, however, English jurisprudence has developed functional equivalents: utmost good faith in insurance, implied duties of honesty in relational contracts, and statutory consumer protections under the Consumer Rights Act 2015. This research asks how the UK’s approach to bona fides can help improve Azerbaijani contract law to enhance fairness and transparency. The working hypothesis is that Azerbaijan’s formally recognised duty of good faith remains limited in impact due to vague interpretation and inconsistent application, and that integrating lessons from the UK’s targeted, context-specific approach could significantly strengthen fair dealing in Azerbaijani contracts.

II. Conceptual Foundations

The concept of bona fides has roots in Roman law, where it carried a dual meaning: opposition to deceit and a broader set of consequences grounded in social justice. Early modern jurists equated it with equity and moral standards, viewing good faith as the point at which moral values enter the legal system. In civil law systems, the principle is typically codified — Germany’s Civil Code requires performance consistent with good faith, and France’s Code makes it a prerequisite for contractual performance. The Anglo-Saxon tradition, having not inherited the Roman principle directly, historically declined to adopt a general good faith obligation, though the Court of Chancery applied good faith reasoning to matters of trust and conscience from the fourteenth century onward.

III. Good Faith in English Contract Law

English courts have long rejected a general duty of good faith. As Lord Justice Bingham stated, English law has committed itself to no such overriding principle but has developed piecemeal solutions in response to demonstrated problems of unfairness. The framework prioritises certainty and party autonomy, and in Walford v Miles [1992], Lord Ackner dismissed a duty to negotiate in good faith as incompatible with the adversarial nature of commercial dealings. Rather than invoke an overarching standard, English law instead addresses unfairness through specific, well-defined doctrines operating in particular contexts.

The clearest example is insurance, where contracts have long been treated as uberrimae fidei — of utmost good faith. Established by Lord Mansfield in Carter v Boehm (1766), this doctrine requires full disclosure of all material facts, arising from the informational asymmetry inherent in insurance relationships. The Marine Insurance Act 1906 codified the duty, and the Insurance Act 2015 later introduced proportionate remedies in place of the all-or-nothing avoidance remedy. Cases such as Pan Atlantic Insurance v Pine Top (1994) further refined the doctrine, requiring that non disclosure must have actually induced the insurer to provide coverage. This narrow but robust obligation demonstrates how English law can embed good faith values in a legally enforceable form without generalising them across all contracts.

A second context is that of relational contracts. In Yam Seng Pte Ltd v International Trade Corp Ltd [2013], Leggatt J held that a duty of good faith could be implied into long-term distributorship agreements, finding that duties of honesty and cooperation were necessary to give effect to the parties’ reasonable expectations. The Court of Appeal, however, took a more restrictive stance in Mid Essex Hospital Services NHS Trust v Compass Group [2013], holding that even express good faith clauses would be construed narrowly and confined to their stated purposes. The law continued to evolve: in Bates v Post Office Ltd [2019], an implied duty of good faith was recognised in long term franchise contracts characterised by mutual trust and significant party investment, while Candey Ltd v Bosheh [2022] cautioned against reflexively labelling contracts relational simply to import good faith obligations. The overall position is that implied duties of honesty and cooperation may arise in certain long-term relationships, but they remain exceptions to the orthodox rule.

In consumer contracts, the Consumer Rights Act 2015 renders a standard term unfair — and thus unenforceable — if it causes a significant imbalance in the parties’ rights to the consumer’s detriment, contrary to good faith. In Director General of Fair Trading v First National Bank plc [2002], Lord Bingham described this as a requirement of fair and open dealing: terms must be transparent and clearly expressed, and must not exploit the consumer’s weaker bargaining position. This statutory framework effectively introduces a fairness check without recognising a general common law duty, targeting the chief concern in consumer transactions — imbalance of bargaining power and information asymmetry.

IV. Good Faith in Azerbaijani Law

The Azerbaijani Civil Code treats good faith as a fundamental standard across multiple provisions. Article 5.3 imposes a general ethical obligation on all civil law subjects, Article 425.1 requires good faith in contractual performance by reference to agreed terms or prevailing business customs, and Article 425.2 mandates cooperation and prohibits actions that undermine the contract’s purpose. The Constitutional Court has confirmed that, despite its absence from Article 6’s enumerated foundational principles, good faith as a general principle presupposes the obligation of civil law subjects to honestly fulfil their rights and obligations.

Judicially, the Constitutional Court has characterised good faith as a fundamental legal presumption, treating each person’s actions as honest unless proved otherwise. In its 2015 Plenum decision, the Court affirmed “vicdanlılıq” as pervading the Code’s spirit, while also noting that parties may define the conduct required by good faith within their freedom of contract, subject to the overarching duty of honesty imposed by law. In the Mirzaliyev case (2021), the Court held that honesty is an essential element of good faith and used “vicdanlılıq” to bar claims premised on dishonest or opportunistic conduct, instructing courts to examine whether a party’s conduct aligns with the standard of a decent, fair-minded person. In Shukurov (2023), the Court refused to invalidate a lease on a technical misdescription where both parties had acted on the agreement and knew its true nature. Invoking reasoning analogous to promissory estoppel, it held that asserting invalidity in such circumstances constituted an abuse of rights contrary to good faith. Despite these significant pronouncements from the Constitutional Court, ordinary courts have been slower to develop a detailed jurisprudence. Lower courts tend to rely on specific Code articles without consistently invoking “vicdanlılıq” as a direct legal standard, leaving the principle’s application uneven across the judiciary.

V. Comparative Evaluation and Reform Proposals

The central contrast between the two systems is structural. Azerbaijani law provides a general codified standard supported by Constitutional Court pronouncements but insufficient interpretive guidance for ordinary courts. English law provides no general standard but achieves fairness through targeted, well-defined doctrines that produce predictable and enforceable outcomes. The question for Azerbaijan is not whether to codify good faith — it already has — but how to make the principle operationally effective.

Amending Article 6 to include good faith among the Civil Code’s foundational principles would confirm its legal status and align the formal text with existing judicial interpretation. Such a revision would signal to lower courts that “vicdanlılıq” is a legal standard rather than a moral aspiration, without creating new substantive duties. Beyond textual reform, the Supreme Court could issue model decisions illustrating how courts should evaluate whether a party has acted honestly and cooperatively, drawing on established practice in long-term contracts, pre-contractual negotiations, and abuse-of-rights disputes. This would provide lower courts with a consistent methodological framework rather than leaving them to apply the principle ad hoc. Formally recognising doctrines of estoppel and implied terms would further strengthen the system. The Constitutional Court has already applied estoppel-like reasoning; formalising this would prevent parties from invoking contractual technicalities when another party has relied on a shared understanding in good faith, while a developed doctrine of implied terms would empower courts to identify obligations necessary to preserve contractual integrity. Finally, clearer remedies are needed. Whether through invalidation of terms, damages, or denial of relief, defining the legal consequences of breaching “vicdanlılıq” would encourage consistent application and give the principle the practical teeth it currently lacks.

VI. Conclusions

Azerbaijani law formally recognises good faith but lacks the procedural tools required to enforce it effectively. Courts invoke the principle in abstract terms without consistently linking conduct to specific legal consequences, leaving parties without reliable guidance. English law, despite rejecting a general duty, achieves comparable results through context-specific doctrines that are precise, predictable, and enforceable. The reforms proposed in this paper remain within the civil law structure and do not require Azerbaijan to abandon its codified approach, but rather to develop it by adding interpretive clarity, model reasoning, and enforceable remedies. The ultimate aim is to transform “vicdanlılıq” from a symbolic commitment into an effective legal standard capable of promoting genuine fairness and transparency in contractual relations.