The binding legal principles established are: (1) State functionaries have a duty under s195 of the Constitution (accountability, transparency, professional ethics) and s7(2) (obligation to respect, protect, promote and fulfill rights) to investigate and, where necessary through appropriate avenues including courts, rectify unlawfulness in public administration. This duty is also founded in s5(7)(a) of the Public Service Act. (2) This duty must be performed "diligently and without delay" as required by s237 of the Constitution - expeditious compliance with constitutional duties is itself a requirement of legality. (3) Courts retain inherent discretion to refuse review applications brought with undue delay, even in the absence of express statutory time limits, based on the public interest in certainty and finality and where delay impairs the court's ability to assess the matter. (4) In assessing whether to overlook delay, courts must consider: (a) whether the delay is unreasonable (factual enquiry and value judgment in light of all circumstances); and if so (b) whether discretion should be exercised to overlook it, considering: potential prejudice to affected parties, consequences of setting aside the decision (mediated by remedial powers under s172(1)(b) to grant just and equitable orders), the nature of the impugned decision, and the strength of the merits. (5) Arbitration awards under the LRA must be challenged directly within the prescribed time limits (6 weeks under s145(1)(a)) and parties cannot circumvent these limits by attacking the underlying decision - this would undermine the dispute resolution structures of the LRA and the finality that arbitration awards are intended to provide. (6) Section 11(2) of the Public Service Act requires that only persons who qualify for a position may be considered for appointment (unless s11(3) applies allowing departures to promote s195(1) values), and appointing unqualified persons is unfair and not in compliance with transparency and accountability requirements.