The Nature and Characteristics of Relational Contracts with an Emphasis on Their Functions in the Supply Chain and Outsourcing

Document Type : Original Article

Authors

1 PhD in Private Law , Department of Law, University of Tehran, Qom, Iran

2 Associate Professor, Department of Law, University of Tehran, Qom, Iran.

Abstract
The expansion of continuous and complex business relationships in supply chains and outsourcing has revealed the limitations of the traditional contractual model, which is primarily based on the ex ante specification of obligations and their formal enforcement. Relational contracts, emphasizing continuity, cooperation, trust, flexibility, and continuous adaptation between the parties, provide a framework for responding to circumstances that cannot be fully anticipated or regulated at the time of contract formation. This study aims to examine the nature of relational contracts and analyze their functions and position in supply chain and outsourcing relationships. Employing a descriptive-analytical method and drawing on library-based sources, the study examines the theoretical foundations of relational contracting, its distinction from classical and neoclassical contractual models, and the conditions and functions of relational contracts in long-term commercial relationships. The findings indicate that relational contracts, as a novel approach to contract law, can enhance the efficiency of supply chain and outsourcing relationships by facilitating continuous adaptation to unforeseen circumstances, strengthening cooperation and information sharing, promoting joint problem-solving, learning, and value creation, and supporting relationship-specific investments. Moreover, the self-enforcing nature of such contracts relies on the future benefits of the relationship, trust, reputation, reciprocal commitments, and the possibility of terminating the relationship.

Keywords

Subjects

[1]. Austen-Baker, R. L. P. S. (2004). A relational law of contract?. Journal of Contract Law, 20, 125-144.
[2] Austen-Baker, R. L. P. S. (2009). Comprehensive contract theory: A four-norm model of contract relations. Journal of Contract Law, 25 (3), 216-243.
[3] Baker, G., Gibbons, R., & Murphy, K. J. (2002). Relational Contracts and the Theory of the Firm. The Quarterly Journal of Economics, 117(1), 39-84.
[4] Beale, H., & Dugdale, T. (1975). Contracts between businessmen: planning and the use of contractual remedies. Brit. JL & Soc'y 2, 45.
[5] Bond, E. W. (2008). Input quality, relational contracts and international outsourcing. Pacific Economic Review13(4), 391-404.
[6] Bondareva, M., & Pinker, E. (2019). Dynamic relational contracts for quality enforcement in supply chains. Management Science65(3), 1305-1321.
[7] Brahm, F., & Tarzijan, J. (2016). Relational contracts and collaboration in the supply chain: impact of expected future business volume on the make‐or‐buy decision. Journal of Supply Chain Management, 52(3), 48-67.
[8] Calzolari, G., & Spagnolo, G. (2017), Relational contracts, procurement competition, and supplier collusion. University of Bologna Discussion Papers, 1-46.
[9] Campbell, D. (2001). The relational theory of contract: selected works of Ian MacNeil. Sweet & Maxwell.
[10] Cao, Z., & Lumineau, F. (2015). Revisiting the interplay between contractual and relational governance: A qualitative and meta‐analytic investigation. Journal of operations management33(1), 15-42.
[11] Coase Ronald H.,(1937). The Nature of the Firm. Economics 4, 386-405.
[12] Defever, F., Fischer, C., & Suedekum, J. (2016). Relational contracts and supplier turnover in the global economy. Journal of International Economics103, 147-165.
[13] Diathesopoulos, M. (2010). Relational contract theory and management contracts: A paradigm for the application of the Theory of the Norms. Cambridge University.
[14] Eisenberg, M. A. (1995). Relational contracts. in Beatson, J., & Friedmann, D. (eds). Good faith and fault in contract law. Vol. 1997, Oxford: Clarendon Press.
[15] Eisenberg, M. A. (1999). Why there is no law of relational contracts. Nw. UL Rev. 94, 805.
[16] ] Fox Jr, J. W. (2003). Relational contract theory and democratic citizenship. Case W. Res. L. Rev. 54, 1.
[17 Gilmore, G., & Collins, R. K. (1974). The death of contract. Vol. 1974, Columbus: Ohio State University Press.
[18] Goetz, C. J., & Scott, R. E. (1981). Principles of relational contracts. Va. L. Rev. 67, 1089.
[19] Granovetter, M. (1985). Economic action and social structure: The problem of embeddedness. American journal of sociology, 91(3), 481-510.
[20] Gudel, P. J. (1998). Relational contract theory and the concept of exchange. Buff. L. Rev. 46, 763.
[21] Gulati, R. (1995). Does familiarity breed trust? The implications of repeated ties for contractual choice in alliances. Academy of management journal 38(1), 85-112.
[22] Höhn, M. I. (2010). Relational supply contracts: optimal concessions in return policies for continuous quality improvements. Springer Science & Business Media.
[23] Hugos, M. H. (2011). Essentials of Supply Chain Management. translated by Sheikh Sajadieh, M., & Akbari Jokar, M. R, (2nd ed.). Adineh pub. (In Persian).
[24] Hviid, M. (2000). Long-term contracts and relational contracts. 46-72.
[25] Kale, P., Singh, H., & Perlmutter, H. (2000). Learning and protection of proprietary assets in strategic alliances: Building relational capital. Strategic management journal 21(3), 217-237.
[26] ] Macaulay, S. (2018). Non-contractual relations in business: A preliminary study. The sociology of economic life, Routledge, 55-67.
[27 Macneil, I. R. (1980). The New Social Contract. New Haven, Conn. USA: Yale UP.
[28] Macneil, I. R. (1973). The many futures of contracts. S. Cal. l. Rev. 47, 691.
[29] Macneil, I. R. (1974). Restatement (second) of contracts and presentation. Va. L. Rev. 60, 589.
[30] Macneil, I. R. (1980). Economic analysis of contractual relations: Its shortfalls and the need for a rich classificatory apparatus. Nw. UL Rev. 75, 1018
[31] Macneil, I. R. (1982). The new social contract: An inquiry into modern contractual relations. Yale University Press, New Haven.
[32] Macneil, I. R. (1983). Values in contract: internal and external. Nw. UL Rev. 78, 340.
[33] Macneil, I. R. (1986). Exchange revisited: Individual utility and social solidarity. Ethics 96(3), 567-593.
[34] Macneil, I. R. (1999). Relational contract theory: challenges and queries. Nw. UL Rev. 94, 877.
[35] Macneil, I. R. (2000). Contracting worlds and essential contract theory", Social & legal studies 9(3), 431-438.
[36] Miyan-Abadi, A. (2018). Supply Chain Management: Definition, History, Objectives, Processes, Advantages, and Barriers. Applied Research in Marketing Management Quarterly, Vol 4 (12). (In Persian).
[37] Parashkevova, L. (2007). Logistics outsourcing–A means of assuring the competitive advantage for an organization. Vadyba/management 2(15), 29-38.
[38] Smythe, D. J. (2003). Bounded Rationality, The Doctine of Impracticability, and the Governance of Relational Contracts. S. Cal. Interdisc. LJ 13, 227.
[39] Stadtler, H. & Kilger. C. (2006). Supply Chain Management. translated by Asgari, N & Farahani, R.Z, Amirkabir University of Technology pub. (In Persian).
[40] Stone, R., & Devenney, J. (2015). The modern law of contract. London & New York: Routledge, 11th ed.
[41] Whitford, A. B. (2015). Oliver E. Williamson, Markets and Hierarchies: Analysis and Antitrust Implications. in Balla, S. J., Lodge. M, & Page, P. C. eds, The Oxford handbook of classics in public policy and administration.OUP Oxford, 359-371
[42] Williamson, O. E. (1975). Markets and hierarchies: analysis and antitrust implications: a study in the economics of internal organization. University of Illinois at Urbana-Champaign's Academy for Entrepreneurial Leadership Historical Research Reference in Entrepreneurship.
[43] Williamson, O. E. (1979). Transaction-cost economics: the governance of contractual relations. The journal of Law and Economics, 22(2), 233-261.
[44] Zabeti Asl, S. H. (2021). The impact of supply chain information exchange and quality management practices on market share performance (Case study: Small and medium manufacturing companies). Operations Management Quarterly, 1 (4), 67–91. (In Persian).
[45] Zheng, J., Roehrich, J. K., & Lewis, M. A. (2008). The dynamics of contractual and relational governance: Evidence from long-term public–private procurement arrangements. Journal of purcDefever, F., Fischer, C., & Suedekum, J. (2016). Relational contracts and supplier turnover in the global economy. Journal of International Economics, 103, 147-165.hasing and supply management14(1), 43-54.
 
Send comment about this article
Enter Name.
Enter a valid email address.
Enter a vaid affiliation.
Enter comments (At leaset 10 words)
CAPTCHA Image
Enter Security Code Correctly.
Volume 33, Issue 29 - Serial Number 29
September 2026
Pages 223-244

  • Receive Date 14 April 2026
  • Revise Date 21 August 2026
  • Accept Date 08 September 2026