Blockchain and Smart Contracts: A Solution for Payment Issues in Construction Supply Chains

• Main Authors: Samudaya Nanayakkara, Srinath Perera, Sepani Senaratne, Geeganage Thilini Weerasuriya, Herath Mudiyanselage Nelanga Dilum Bandara
• Format: Article
• Language: English
• Published: MDPI AG 2021-05-01
• Series: Informatics
• Subjects: blockchain; construction industry; payment issues; smart contracts; supply chain
• Online Access: https://www.mdpi.com/2227-9709/8/2/36

The construction industry has dynamic supply chains with multiple suppliers usually engaged in short-term relationships. Government legislation, novel types of payment agreements, conventional information technology solutions, and supply chain management best practices have endeavoured to solve payment-related financial issues in the construction industry, which are mainly caused by the complexities of the construction supply chain. Nevertheless, payment-related issues persist as one of the key challenges in the industry. Applications of blockchain technology–a trusted, distributed data storing mechanism–along with smart contracts are gaining focus as solutions for complex interorganisational processes. A smart contract is a self-executing script that codifies a set of rules or agreements between multiple parties and runs across the blockchain network. This paper identifies the suitability of blockchain and smart contract technologies in solving payment issues in the construction industry. An expert forum of construction industry stakeholders served as the primary data collection method through a structured questionnaire. The key finding of the paper is that blockchain and smart contract powered solutions can significantly mitigate the payment and related financial issues in the construction industry, including partial payments, nonpayments, cost of finance, long payment cycle, retention, and security of payments.