It is to be noted that in civil cases, the proper question for the Court to determine in order to effectually and completely determine the case between the parties is: Whether the Plaintiff has proved his case upon preponderance of evidence as required by law? This question is in line with our law, that the onus is on the Plaintiff to prove his case by preponderance of evidence and the burden of proof does not shift. There is a plethora of judicial authorities on this. Let me quote extensively what the Court said in Odum v. Chibueze (2016) All FWLR (Pt. 848) 714 at 742 743 to wit: “Now, one of the most firmly established principle of legal adjudication is that in a civil suit, the person who asserts a fact has the primary burden of proving the assertion. This is explained by the maxim “ei qui affirmat non ei qui negat incumbit probation” which means the burden of proof lies on one who alleges, and not on him who denies Arum v. Nwobodo (2004) 9 NWLR (Pt. 878) 411, (2005) All FWLR (Pt. 246) 1231; Olaleye v. Trustees of ECWA (2011) All FWLR (Pt. 565) 297, (2011) 2 NWLR (Pt. 1230) 1; Imonikhe v. Unity Bank – Plc. (2011) All FWLR (Pt. 586) 423; (2011) NWLR (Pt. 1262) 624. In other words, the onus of proof of an issue rests upon the party whether claimant or Defendant who substantially asserts the affirmative of the issue. It is fixed at the beginning of the trial by the state of the pleadings as it is settled as a question of law, remaining unchanged throughout the trial exactly where the pleading place it and never shifting in any circumstance whatever. In deciding what party asserts the affirmative, regard must be had to the substance of the issue, and not merely to its grammatical form which the pleader can frequently vary at will. The true meaning of the rule is that where a given allegation whether affirmative or negative, forms an essential part of a party’s case, the proof of such allegation rests on him Elemo v. Omolade (1968) NMLR 359; Fashanu v. Adekoya (1974) 6 SC 83; Atane v. Amu (1974) 10 SC 237; Kate Enterprises Ltd v. Daewoo (Nig.) Ltd (1985) 2 NWLR (Pt. 5) 116 and Ogboru v. Uduaghan (2011) All FWLR (Pt. 577) 650, (2011) 2 NWLR (Pt. 1232) 538.”
— I.E. Ekwo J. Mbah v. NYSC, Ibrahim Muhammad (FHC/ABJ/CS/611/2023, 10-NOV-2023)
