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Bias (Rule Against Bias)

/baɪəs/

Natural Justice Term

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Definition

A predisposition, prejudice, or interest in the outcome of a decision that disqualifies a decision-maker from adjudicating a matter. It may be pecuniary (financial interest), personal (friendship, enmity), or departmental (institutional loyalty). The rule against bias — nemo judex in causa sua — requires not only the absence of actual bias but also the absence of apparent bias. 'Justice must not only be done but must be seen to be done.'

Examples

A judge who holds shares in a company cannot hear a case involving that company — even without actual bias, the appearance of bias disqualifies them.
An inquiry officer who was the complainant in a disciplinary proceeding cannot also be the adjudicator — personal involvement creates apparent bias.

Case Study

In Ranjit Thakur v. Union of India (1987), the Supreme Court held that the test for bias is whether a reasonable, fair-minded person, knowing the facts, would think there is a real possibility of bias — not whether the decision-maker is actually biased. The Court set aside a court-martial finding where the confirming authority was the same officer who had initiated the proceedings.

Key Cases

Ranjit Thakur v. Union of India

1987

AIR 1987 SC 2386

Test for bias is the reasonable suspicion test — whether a fair-minded person would perceive a real possibility of bias. Set aside court-martial where the same officer initiated and confirmed proceedings.

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Also Known As

nemo judexrule against bias

Synonyms

nemo judex principleimpartiality principleconflict of interest rule

Antonyms / Opposites

impartialityrecusalfair adjudication

Related Terms

nemo judex in causa suanatural justicerecusalconflict of interestapparent biaspecuniary interest

Dictionary Entry

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