Natural Justice

Natural justice is the set of procedural principles that must be observed by any body exercising judicial or quasi-judicial functions — including administrative authorities acting on rights of individuals. The core rules of natural justice are two: (1) audi alteram partem — hear both sides; a person must be given an adequate opportunity to be heard before a decision adverse to them is made; and (2) nemo judex in causa sua — no person shall be a judge in their own cause; the decision-maker must be free from bias or interest in the outcome. Together, these principles constitute the minimum of procedural fairness that the law requires of any decision-maker.

Natural justice evolved in English administrative law from the eighteenth century as courts applied equitable principles to curb the arbitrary exercise of power by statutory tribunals and administrative officers. The traditional approach was to apply natural justice only when a 'judicial' or 'quasi-judicial' function was being exercised — not to purely administrative or legislative decisions. The Indian Supreme Court significantly expanded this approach in A.K. Kraipak v. Union of India, holding that natural justice must be applied to all executive actions that affect a person's rights, privileges, or legitimate expectations — not merely formal judicial or quasi-judicial functions.

The content of audi alteram partem in any given case depends on the nature of the proceedings and the rights at stake. At minimum, it requires: notice of the case against the person (what is alleged, what evidence is relied on); a reasonable opportunity to present a response; and a reasoned decision on the response. In high-stakes proceedings (disciplinary tribunals, deregistration of licences, deportation), the right to hearing may include the right to legal representation, the right to cross-examine witnesses, and the right to inspect documents. In lower-stakes administrative decisions, written representations may suffice.

The rule against bias (nemo judex) covers three forms of bias: (1) actual bias — the decision-maker was actually partial to one side; (2) imputed bias — the decision-maker has a financial or personal interest in the outcome; and (3) apparent bias — circumstances exist that would lead a fair-minded observer to conclude that there is a real possibility of bias. Indian courts apply the 'real danger of bias' test — would a reasonable person, knowing all the facts, conclude that there is a real risk of bias? If yes, the decision is void, regardless of whether actual bias existed.

For advocates challenging administrative or quasi-judicial decisions, the natural justice analysis begins with two questions: (1) Did the authority give the person adequate notice of the case against them and a meaningful opportunity to respond? (2) Was the decision-maker free of actual, imputed, or apparent bias? If either question is answered negatively with supporting facts, a certiorari writ under Article 226 challenging the decision has a strong foundation. Natural justice violations are generally grounds for quashing — courts do not typically sustain a procedurally flawed order and merely direct the authority to reconsider.