As noted at [6] above, the contract completion dates for Phases 1 and 2A of the Subcontract were 31 July 2017 and 20 February 2017 respectively. ZK’s primary contention, which it has maintained throughout these proceedings, is that DGE walked off site and did not send any workers from 6 June 2018. Importantly, DGE does not deny this as a fact, but alleges that its conduct was justified because of ZK’s repudiation of the contract by non-payment. As a proposition of building and construction law, that is not necessarily correct. There may be instances in which a persistent course of payment delays, or a protracted delay in the payment of a very substantial sum amounts to a repudiation of the contract: see for example AL Stainless Industries Pte Ltd v Wei Sin Construction Pte Ltd [2001] SGHC 243 at [194], citing Chow Kok Fong, Law and Practice of Construction Contract Claims (Longman, 2nd ed, 1993) at p 264. However, not every instance of non-payment by a contracting party will suffice to constitute repudiation. This was made clear in Jia Min Building Construction Pte Ltd v Ann Lee Pte Ltd [2004] 3 SLR(R) 288 (“Jia Min”) at [55], where the court stated, citing Lubenham Fidelities and Investments Co Ltd v South Pembrokeshire District Council (1986) 33 BLR 46: “[i]t appears settled law that a contractor/subcontractor has no general right at common law to suspend work unless this is expressly agreed upon. This is so even if payment is wrongly withheld”. The court also cited Halsbury’s Law of Singapore, vol 2 (LexisNexis Singapore, 2003 Reissue) at para 30.321, Keating on Building Contracts (Sweet & Maxwell, 7th ed, 2001) at para 6-96 and Hudson’s Building and Engineering Contracts, vol 1 (Sweet & Maxwell, 11th ed, 1995) at para 4-223 for the same principle. The rationale for this, the court explained, was that “the existence of such a right [to suspend work upon the other party’s failure to make payment] could create chaos within the building industry if contractors were to muscle their way through disputes with threats or actual threats or suspension instead of having their disputes adjudicated” (at [57]).