Reconstructing Indonesian Contract Law for Long-Term Commercial Relationships: A Relational Contract Theory Framework
Abstract
Introduction: Long-term commercial relationships such as supply, distribution, franchising, outsourcing, licensing, and strategic partnerships cannot be fully governed through contractual terms determined at the time of formation. Indonesian contract law, primarily rooted in the Civil Code, continues to emphasise contractual autonomy, pacta sunt servanda, and legal certainty, but provides limited conceptual guidance for managing contractual incompleteness, continuing cooperation, and adaptation to unforeseen circumstances.
Purposes of the Research: This study examines whether the classical framework of Indonesian contract law adequately governs long-term commercial relationships and develops a relational framework for addressing contractual incompleteness while preserving contractual autonomy and legal certainty.
Methods of the Research: This study employs prescriptive normative legal research using statutory, conceptual, and historical approaches. Primary legal materials include the Indonesian Civil Code and relevant legal instruments, while secondary materials comprise scholarly literature on Relational Contract Theory, contractual incompleteness, good faith, and relational governance. The materials are analysed through legal interpretation, comparative analysis, and conceptual synthesis.
Results Main Findings of the Research: The study demonstrates that the principal limitation of the classical paradigm is not contractual autonomy or pacta sunt servanda, but the assumption that long-term contractual obligations can be exhaustively determined ex ante. It proposes a three-dimensional framework comprising formal-protective, relational-procedural, and adaptive dimensions. The framework integrates substantive certainty with procedural mechanisms for cooperation, information sharing, review, renegotiation, adaptation, and dispute prevention. Conclusion: Relational Contract Theory can therefore serve as a normative framework for reconstructing Indonesian contract law without abandoning contractual certainty. The proposed model provides a basis for legislative development, judicial interpretation, and contract drafting that preserves enforceability while enabling long-term commercial relationships to adapt to changing circumstances.
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Copyright (c) 2026 Fatihani Baso, Sayidah Asma Basir, Andi Novita Mudriani Djaoe, Suriani Suriani (Author)

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