Absolute Presumption and Legal Certainty in Civil Evidence

Presumption is an important instrument in the law of evidence that facilitates judges in reaching legal conclusions through proven facts. It serves as a tool to fill evidentiary gaps when direct proof is difficult to obtain. However, not all presumptions carry the same weight. Doctrinally, a distinction exists between rebuttable presumptions and irrebuttable presumptions, or presumption juris et de jure. An irrebuttable presumption is one that the law regards as an absolute truth, which cannot be defeated by counter-evidence. Consequently, even if a litigant is able to present evidence demonstrating a contrary situation, the judge remains bound to uphold the presumption as long as the legal norm explicitly stipulates it.

In Indonesian civil procedural law, presumption is a means of proof. Its legal basis is found in Article 1915 of the Civil Code, which defines a presumption as a conclusion drawn by law or by a judge from a known event to an unknown event. This norm is then differentiated into presumptions based on law (wettelijke vermoedens) and presumptions based on the judge (feitelijke vermoedens). Article 1916 of the Civil Code stipulates that presumptions established by law possess a specific evidentiary weight according to the nature given by the legislator. In practice, some presumptions can still be rebutted by contrary evidence, while others cannot be challenged because the legislator has established them as final legal facts.

This concept is known in evidentiary law as presumption juris et de jure, an absolute legal presumption. Unlike presumption juris tantum, which still allows the opposing party to present counter-evidence, presumption juris et de jure closes this possibility in the interest of ensuring legal certainty. This form of absolute presumption represents a limitation on the freedom of evidence. Under normal circumstances, any piece of evidence can be countered by other evidence of higher or equal probative value. However, for an absolute presumption, presenting contrary evidence becomes irrelevant because the law has predetermined its legal consequences.

This concept arises from the need to create legal certainty. Not all legal facts can be debated indefinitely. In certain situations, the legislator considers legal certainty to be more important than leaving open an endless evidentiary process. Therefore, an absolute presumption is described as being immune to counter-evidence, as the judge is not permitted to deviate from the legal consequences determined by the law.

From the perspective of evidentiary theory, the absolute presumption demonstrates the dominance of the positivist-wettelijke bewijstheorie. Under this theory, the weight of evidence is determined by normative provisions established by law, binding the judge to the evidentiary value assigned by the legislator. A judge is not free to set aside an absolute presumption based solely on personal conviction. When compared to the free evidence theory (vrije bewijsleer), the existence of an irrebuttable presumption is an exception, as the free evidence theory grants judges the independence to assess all evidence freely. In the case of an absolute presumption, this independence is restricted by an imperative legal norm. The absolute presumption prioritises the aspect of legal certainty over legal utility and justice. The state intends that certain legal facts should no longer be subject to prolonged debate, so that legal relations achieve stability and predictability.

Furthermore, the validity of a norm is determined by its position within the legal system. Therefore, if a law has established a presumption as a final rule, the judge is obliged to apply it without considering factors outside that norm. This approach demonstrates that the strength of a presumption does not derive from the judge’s conviction, but from the validity of the governing norm. In Indonesian legal practice, not all presumptions are absolute. The majority of presumptions used by judges are simple presumptions (feitelijke vermoedens) that can still be rebutted by other evidence. Conversely, presumptions explicitly stipulated by law as irrebuttable only apply in specific, exhaustively determined circumstances.

The existence of an absolute presumption must be understood as an exceptional instrument. Its application cannot be expanded through analogy, as this would potentially reduce the parties’ right to prove their claims. A judge must ensure that a presumption truly meets the requirements of a presumption juris et de jure based on statutory provisions before rejecting counter-evidence from the opposing party.