The Family Constitution in Turkish Practice: A Gentlemen's Agreement or an Enforceable Instrument?

Introduction
Family businesses account for the overwhelming majority of enterprises in Turkey, yet only a small fraction survive into the third generation. The instrument most frequently recommended to change those odds is the family constitution (aile anayasası): a written charter in which the family records its values, its rules on employment and dividends, its succession philosophy, and its mechanisms for resolving disputes. The document has become a fixture of Turkish corporate governance practice, particularly in family-held joint stock companies (Hamamcıoğlu, "Aile Anayasaları ve Anonim Şirketlerde Aile Anayasası Uygulamaları", Bahçeşehir Üniversitesi Hukuk Fakültesi Dergisi, Vol. 15, No. 193, 2020, pp. 1137–1175). Its legal force, however, is far less settled than its popularity suggests. This article examines what a family constitution can and cannot achieve under Turkish law, and how transactional practice — informed by the case law of the Court of Cassation (Yargıtay) on shareholders' agreements — converts a statement of family values into an enforceable governance architecture.

What a Family Constitution Is — and Is Not
Turkish law contains no specific regulation of the family constitution; it is a creature of practice, not of statute (Hamamcıoğlu, op. cit., p. 1140). There is no mandatory minimum content, but the documents typically address the goals of the family enterprise, the corporate principles governing its operation, the values binding both family and company, limits on family members' outside activities, dispute resolution paths, the responsibility to transfer the company to the next generation, share transfers and management matters. Because each document is tailored to one family, no standard form exists.

Doctrinally, the starting point is freedom of contract under Articles 26 and 27 of the Turkish Code of Obligations (TBK): the family may agree on whatever does not violate mandatory law, public order, personal rights or morality. But the constitution is a hybrid text. Large parts of it — mission statements, family councils, values, education expectations — are moral and sociological commitments rather than obligations capable of specific performance. Turkish commentators therefore treat the family constitution primarily as a social consensus document, whose provisions acquire legal teeth only to the extent they are drafted as genuine contractual undertakings or transplanted into corporate-law instruments (İlter, "Aile Anayasası ve Yasal Çerçevesi", TOKKDER Dergi). This dual character explains the central drafting question of Turkish practice: which provisions should remain aspirational, and which must be hardened into the articles of association, a shareholders' agreement, or an inheritance contract.

The Corporate Law Ceiling: Mandatory Provisions and the Single-Debt Principle
Two features of the Turkish Commercial Code No. 6102 (TTK) set the outer limits of what can be embedded in a company's articles of association.

The first is Article 340 TTK, under which the articles of a joint stock company may deviate from the statute only where the statute expressly permits deviation. A family constitution clause that contradicts a mandatory rule — for example, one purporting to override majority rule in the general assembly or to subject corporate organs to the family council — cannot be written into the articles, and if written, produces no corporate-law effect.

The second is the single-debt principle (tek borç ilkesi) reflected in Article 480 TTK: through the articles, a shareholder can be obliged only to pay the subscribed capital. Non-compete covenants, obligations to work in the company, dividend waivers, or duties to sell shares on defined events cannot be imposed on shareholders via the articles. Precisely because such obligations are barred at the corporate level, practice locates them in shareholders' agreements, which rest on the law of obligations rather than company law.

Share transfer restrictions occupy a middle ground. For registered shares, Articles 493–494 TTK allow the articles to require company approval for transfers and to define important grounds for refusal — the classic tool for keeping shares within the family. The Court of Cassation polices these provisions strictly: restrictions that aggravate the statutory transfer regime beyond what the TTK permits are ineffective at the corporate level even if inserted into the articles, and the 11th Civil Chamber's recent jurisprudence on board refusal of registered share transfers (see the decision E. 2024/1865, K. 2025/478, discussed in Turkish practice literature) confirms that refusal must rest on the grounds and procedure of Articles 493–494.

The Contractual Layer: Lessons from the Case Law on Shareholders' Agreements
Since no Turkish court has yet been asked to enforce a "family constitution" by that name in a reported leading case, the enforceability analysis proceeds by analogy to shareholders' agreements — the instrument into which the binding parts of a constitution are customarily decanted. Here the Yargıtay's position is settled and has three prongs.

First, relativity: a shareholders' agreement binds only its signatories. In its decision of 11 October 2016 (11th Civil Chamber, E. 2016/1275, K. 2016/8000), the Court held that an agreement concluded among the shareholders binds only the shareholders who are party to it and is not binding on the company as a legal entity; a general assembly resolution adopted in accordance with the articles remains valid even where it violates the shareholders' agreement, because the validity of corporate resolutions is measured against the articles, not against external contracts among shareholders. Translated to the family context: a family constitution signed by family members cannot, of itself, invalidate a board or general assembly decision that contradicts it.

Second, obligatory effect and remedies: breach of the agreement sounds in contract. The available remedies are damages under Article 112 TBK, contractual penalties under Articles 179–182 TBK — subject to judicial reduction of excessive penalties under Article 182/son for non-merchants — and, where drafted with sufficient precision, specific performance and interim injunctions (e.g., restraining a share transfer under Article 389 of the Code of Civil Procedure). A completed transfer to a good-faith third party, however, will generally stand, leaving the aggrieved family members with monetary claims only. This is why well-drafted family shareholder agreements couple transfer restrictions with meaningful penalty clauses and escrow or pledge structures rather than relying on the bare covenant.

Third, the Court accepts sophisticated exit architecture. Option-based structures — call and put options over shares at a determined or determinable price, exercised by unilateral declaration — have been upheld by the 11th Civil Chamber (decision of 16 March 2018, E. 2018/25, K. 2018/2049), which gives families a validated toolbox for buy-outs of exiting members, deadlock resolution and generational transfer.

The practical synthesis drawn in Turkish doctrine is a three-tier architecture: (i) the family constitution as the umbrella consensus document; (ii) a shareholders' agreement signed by all family shareholders, reproducing the constitution's binding rules (transfer restrictions, non-compete, dividend policy, board composition undertakings, dispute resolution, penalties); and (iii) the articles of association, amended in parallel to carry every provision the TTK allows — approval requirements for registered share transfers under Articles 493–494, qualified quorums where Article 421 permits, share groups and nomination privileges under Articles 360 and 478 et seq. Only provisions anchored in the articles bind the company and successive shareholders; everything else binds solely the signatories (İlter, op. cit.; in the same direction Erdem & Erdem, "Aile Şirketlerinde Kurumsallaşma ve Aile Anayasası", Hukuk Postası).

The Succession Dimension
A family constitution that plans succession without engaging inheritance law plans nothing. Turkish law protects reserved shares of descendants and the spouse (Civil Code Arts. 505 et seq.), and a constitution cannot deprive an heir of the reserved portion. The instruments that can give succession provisions real effect are the inheritance contract (miras sözleşmesi), which under Article 545 of the Civil Code requires the form of an official will executed before a notary or other official with witnesses, and the renunciation of inheritance agreement (mirastan feragat sözleşmesi, Art. 528), by which a prospective heir may waive rights, typically against consideration. Practice therefore pairs the constitution with individually executed inheritance contracts and, where shares are gifted during lifetime, with usufruct reservations and voting arrangements — again mirrored in the articles through share groups and privileges. A constitution clause that merely announces "the company will pass to the children active in management" creates expectation, not entitlement.

Dispute Resolution and the Family Council
Most constitutions establish a family assembly and a family council and route conflicts first to internal mediation. These organs have no corporate-law status; their resolutions bind, at most, as contractual undertakings of the signatories. Arbitration clauses covering disputes among signatories arising from the constitution or the shareholders' agreement are valid within the limits of arbitrability; by contrast, actions to set aside general assembly resolutions are litigated before the commercial courts under the TTK regime, and the constitution cannot redirect them. Drafting must therefore distinguish carefully between intra-family contractual disputes (arbitrable) and corporate-organ disputes (not freely arbitrable), or the dispute resolution chapter will fail exactly when it is needed.

Conclusion
Under Turkish law as it stands, a family constitution is neither a nullity nor a self-executing code. Standing alone, it is a social compact whose breach may — if the provision is drafted as a real obligation — support damages or an agreed penalty against the breaching signatory, but which cannot bind the company, its organs, non-signatory heirs or third-party transferees. The Yargıtay's shareholders' agreement jurisprudence (11th Civil Chamber, E. 2016/1275, K. 2016/8000; E. 2018/25, K. 2018/2049) supplies both the warning and the method: contractual governance binds only its parties, so every rule the family truly needs must be carried, to the extent Articles 340, 480 and 493–494 TTK allow, into the articles of association, backed by a comprehensive shareholders' agreement with penalties and options, and completed on the succession side by notarial inheritance contracts. Approached this way, the family constitution ceases to be a framed statement on the boardroom wall and becomes the reference point of an enforceable, multi-instrument governance system — which is what the statistics on family business survival suggest it needs to be.

 

Select Bibliography

Hamamcıoğlu, E., "Aile Anayasaları ve Anonim Şirketlerde Aile Anayasası Uygulamaları", Bahçeşehir Üniversitesi Hukuk Fakültesi Dergisi, Vol. 15, No. 193 (2020), pp. 1137–1175.

İlter, A. B., "Aile Anayasası ve Yasal Çerçevesi", TOKKDER Dergi.

Erdem & Erdem, "Aile Şirketlerinde Kurumsallaşma ve Aile Anayasası", Hukuk Postası.

Kolcuoğlu Demirkan Koçaklı, "Pay Sahipleri Sözleşmesi Çıkış Hükümleri ve İcra Edilebilirliği".

Cases Cited

Yargıtay 11th Civil Chamber, 11.10.2016, E. 2016/1275, K. 2016/8000 (shareholders' agreement binds only its parties; corporate resolutions measured against the articles).

Yargıtay 11th Civil Chamber, 16.03.2018, E. 2018/25, K. 2018/2049 (validity of option-based share transfer structures).

Yargıtay 11th Civil Chamber, E. 2024/1865, K. 2025/478 (board refusal of registered share transfers under TTK Arts. 493–494).