Kuwaiti Law of Evidence — Documents, Testimony, Oaths & Presumptions

General Principles and Burden of Proof

Kuwait's evidence system rests on fundamental principles:

• Burden on the claimant: The burden of proof falls on the party asserting a fact contrary to the default or apparent state
• Free evaluation: The judge freely forms conviction from the evidence presented
• Adversarial principle: Every piece of evidence must be disclosed to the opposing party for discussion
• Presumption of freedom from obligation: Anyone claiming another owes a debt must prove it

Written Evidence — Official and Private Documents

Written evidence is the strongest form in Kuwait's evidence system:

Legal transactions exceeding KD 5,000 in value must be proved by written evidence, unless a material or moral impediment prevented obtaining documentary proof.

Witness Testimony — Conditions and Limits

Testimony is a witness's account before the court of facts perceived through their senses, subject to conditions and restrictions:

• Witness requirements: Legal age, sound mind, and perception — minors over fifteen may testify for informational purposes only
• Administration: Testimony is given under oath before the court
• Obligation: Everyone is obligated to testify unless legally exempt
• Exemptions: Professional confidentiality (lawyers, doctors), spousal relationship, personal interest

Testimony is inadmissible to contradict or supplement written evidence, or to prove transactions exceeding KD 5,000 (except in commercial matters).

Legal and Judicial Presumptions

Presumptions are inferences drawn by law or the judge from a known fact to establish an unknown one:

Legal Presumptions

Expressly provided by statute, relieving the party relying on them from the burden of proof:

• Presumption of judicial judgment validity (res judicata)
• Presumption of good faith in possession
• Presumption of fault against the custodian of things

Judicial Presumptions

Drawn by the judge from case circumstances under discretionary authority, subject to Court of Cassation review for soundness of reasoning.

Confessions and Their Types

A confession is a party's acknowledgment of a fact or right claimed by the opposing party:

• Judicial confession: Made before the court during proceedings — conclusive and irrevocable except for factual error
• Extrajudicial confession: Made outside court — not conclusive, subject to the judge's assessment
• Requirements: The confessor must have legal capacity, and the confession must be voluntary without duress

A confession is indivisible — the favorable and unfavorable parts cannot be separated unless they relate to independent facts.

Oaths — Types and Rules

Oaths are a supplementary evidentiary tool when the claimant cannot produce sufficient evidence:

• Decisive oath: Directed by one party to the other to settle the dispute — swearing wins the case; refusal loses it
• Supplementary oath: Directed by the judge sua sponte to complete incomplete evidence — does not settle the case alone
• Referring the oath: The party asked to swear a decisive oath may refer it back to the requesting party

A decisive oath may not be directed on facts contrary to public policy, and must relate personally to the party taking it.

Inspection and Expert Evidence

Inspection

The court's visit to the subject of the dispute — such as inspecting a disputed property or accident scene. The full bench or a delegated member may conduct the inspection.

Expert Evidence

Engaging specialists in matters requiring technical knowledge beyond the judge's expertise:

• Forensic medical reports in injury and death cases
• Accounting expertise in financial disputes
• Engineering expertise in construction and property disputes
• Damage assessment in compensation cases

An expert's opinion is advisory — the court may adopt or reject it with stated reasons.

Evidence in Commercial Matters

Evidence in commercial transactions enjoys greater flexibility than civil matters:

• Free proof: Commercial transactions may be proved by any means including witness testimony and presumptions, regardless of value
• Commercial books: Serve as evidence for and against the merchant — with conditions
• Commercial correspondence: Admissible evidence including email and text messages
• Invoices: Constitute a presumption of sale and delivery if the recipient does not object within a reasonable time

This flexibility reflects the speed-and-trust nature of commercial dealings.

Frequently Asked Questions

Are WhatsApp messages admissible in court?

Yes, Kuwaiti courts have begun accepting electronic and text messages as evidence, especially in commercial matters. The message must be attributed to its sender and shown to be unaltered; its probative value is subject to the judge's assessment.

How does the burden of proof differ between civil and criminal cases?

In civil cases, the burden is on the claimant. In criminal cases, the accused is presumed innocent and the prosecution bears the burden; doubt is resolved in the accused's favor.

Can a judge decide based on personal knowledge?

No. A judge may not base a judgment on personal knowledge — the decision must rest on evidence presented in the case and made available to the parties for discussion.