The Principles of Natural Justice are universal rules of procedural fairness. They are not written in any code, but represent the fundamental minimum required to ensure a decision is just and fair.
Natural justice applies to quasi-judicial actions and purely administrative decisions that affect civil rights, as established in the landmark case of A.K. Kraipak v. Union of India (1969).
1. The First Principle: Nemo Judex In Causa Sua
This is the Rule against Bias: "No one should be a judge in their own cause." Justice must not only be done, but must manifestly and undoubtedly be seen to be done. If a deciding officer has a biased interest in the outcome, the decision is voidable.
2. Types of Bias Recognized in Law
- Pecuniary Bias (Financial Interest): Any financial interest in the subject matter, no matter how tiny, automatically disqualifies the judge. No proof of actual bias is needed; the disqualification is absolute.
📜 English Precedent: Dimes v. Grand Junction Canal (1852)
A Lord Chancellor decided a case in favor of a canal company. It was later discovered he held shares in that company. The House of Lords quashed the decision immediately, ruling that his pecuniary interest disqualified him. - Personal Bias: Arises from friendship, family relationship, or professional rivalry between the deciding officer and a party to the case.
📜 Indian Precedent: Mineral Development Ltd. v. State of Bihar (1960)
The state government cancelled a mining lease held by the plaintiff. The minister who made the decision held deep personal political enmity against the company owners. The Supreme Court quashed the cancellation due to clear personal bias. - Official / Subject-Matter Bias: Occurs when the deciding officer has a strong departmental interest in the outcome, or acted as both the prosecutor/investigator and the judge.
📜 Landmark Case: Gullapalli Nageswara Rao v. APSRTC (1959)
The Secretary of the Transport Department heard objections against a scheme to nationalize road transport that his own department had prepared and proposed. The Supreme Court held that the Secretary was officially biased, making the hearing a sham.
3. The Legal Test of Bias
To disqualify a judge, the law does not require proof of actual bias (which is nearly impossible to prove). Instead, courts apply the objective test of Real Likelihood of Bias or Reasonable Suspicion of Bias—meaning whether a reasonable person, looking at all the facts, would conclude that there was a real risk of unfairness.