Mandamus
A writ of mandamus is a court order compelling a government official or entity to perform a mandatory duty correctly. In this case, the petitioners sought mandamus to force the Employment Exchange to sponsor their names for recruitment. The court clarified that mandamus cannot be issued unless a legal right and duty are established, which the petitioners failed to demonstrate.
Ratio Decidendi vs. Obiter Dicta
Ratio Decidendi refers to the legal principle or rationale that is essential to the decision and thus becomes binding precedent. In contrast, Obiter Dicta are remarks made by judges that, while persuasive, are not binding as they are not central to the decision. The court emphasized that only the ratio decidendi of cases like Excise Superintendent is binding, and any peripheral comments do not hold authoritative weight.
Ultra Vires
The term "ultra vires" means beyond the powers. An action or decision is ultra vires if it exceeds the authority granted by law. The judgment confirmed that the recruitment scheme under scrutiny was within the statutory authority, and thus, any deviation by authorities would render appointments ultra vires and void.