For many legal practitioners, the doctrine of frustration is not an issue arising frequently in day-to-day practice and is often only revisited in detail since its study at undergraduate level. However, the onset of the COVID-19 pandemic brought renewed relevance to the doctrine, as a significant number of contractual relationships were disrupted, giving rise to disputes concerning whether such contracts had been frustrated and the legal consequences flowing from that determination.

This development raises an important question as to whether the doctrine, as currently applied in modern contract law, has become overly restrictive. Frustration operates in circumstances where an unforeseen event renders contractual performance impossible or fundamentally different from what was originally contemplated. The threshold for establishing frustration is notably high in Irish law. It is not sufficient that performance has become more onerous or commercially disadvantageous; rather, it must be shown that the contractual obligations are no longer capable of performance, either immediately or in the future.

Irish case law has considered arguments seeking to extend the doctrine of frustration to include concepts such as “partial” or “temporary frustration”, akin to the more flexible approach that has emerged in certain UK jurisprudence. However, the Irish courts have rejected such developments to date in an approach to the doctrine, as to do this would be to recognise either partial or temporary frustration would represent a significant departure from established common law principles governing the doctrine. The courts have accordingly maintained through case law that it is not their function to create a new extension of the doctrine or create a “new law” on it.

This strict adherence to orthodox principles reflects a strong judicial preference for contractual certainty and predictability and fairness. However, it raises an important question as to whether the Irish approach remains overly restrictive in light of contemporary commercial realities. In a rapidly evolving economic and regulatory environment particularly in the context of global disruptions such as the COVID-19 pandemic, contracts are increasingly exposed to unforeseen external shocks that may not render performance impossible but may fundamentally alter the commercial basis upon which the agreement was formed. The absence of a more flexible doctrine may therefore place undue rigidity on contracting parties, potentially forcing them to rely on force majeure clauses or other contractual mechanisms that may not always adequately anticipate or address such disruptions.

Accordingly, while the Irish courts’ reluctance to expand the doctrine preserves doctrinal certainty, it also invites critical reflection as to whether a more nuanced approach capable of addressing degrees of disruption short of absolute impossibility might better reflect the realities of modern commercial contracting.