Failure to Give Reasons: A Powerful Ground of Challenge

Of all the grounds of judicial review, none has grown more in modern Irish law than the duty to give reasons. The principle is functional and humane in equal measure: a person affected by public power is entitled to know why — because without the why, neither an appeal, nor a challenge, nor even acceptance is truly possible.

The Mallak Principle

In Mallak v Minister for Justice, the Supreme Court confronted a naturalisation refusal issued without any reasons at all — and held that fair procedures require reasons adequate to enable the affected person to understand the decision and assess their options, and to enable a court to review it. The decision reoriented Irish administrative law: reasons moved from courtesy to entitlement, and the entitlement now runs through visa refusals, licence decisions, welfare appeals, disciplinary findings and planning determinations alike.

Adequate Means Functional

The standard is not eloquence or length. Reasons are adequate when they perform two functions: telling the person why they lost — engaging with the principal issues and evidence actually advanced — and enabling a court to see whether the decision was lawfully reached. The intensity scales with the stakes: the more a decision matters, the more its reasoning must show. What consistently fails: conclusions dressed as reasons (“the criteria are not met”), statutory recitals, and templates that could attach to any file in the cabinet.

Where the Ground Bites Hardest

• Visa and immigration refusals built from standard paragraphs — see visa challenges;
• Licensing decisions: one-line refusals of livelihood-bearing licences — see our licensing practice;
• Welfare and grant appeals upholding refusals without engaging the medical or financial evidence;
• Planning decisions departing from an inspector’s recommendation without explanation;
• Disciplinary findings whose gravity demands reasoning they never received.

Deploying the Ground

The reasons ground rewards a staged approach. First, the pre-action letter demanding reasons: cheap, fast, and decisive either way — the body explains itself (resolving matters or exposing its reasoning to attack), or its silence becomes Exhibit A. Then, where needed, the challenge itself: pleaded within the time limit, typically alongside companion grounds, because decisions bare of reasons are rarely bare of other defects.