Law of Evidence at Costa Rica
In Costa Rica, the Law of Evidence is governed by both civil law principles and the Costa Rican Constitution. The framework for the law of evidence in Costa Rica is primarily based on the Civil Code (Código Civil) and the Criminal Code (Código Penal), as well as the Code of Civil Procedure and the Code of Criminal Procedure. Evidence law in Costa Rica is also influenced by international conventions and human rights principles, as the country is a signatory to various international treaties and accords.
Here’s an overview of the Law of Evidence in Costa Rica:
1. Sources of Evidence Law
Civil Code (Código Civil): Governs legal processes in civil matters, including the use of evidence in non-criminal cases.
Criminal Code (Código Penal): Governs criminal law and includes provisions on how evidence is used in criminal proceedings.
Code of Civil Procedure (Código Procesal Civil): Establishes the rules for conducting civil litigation, including the presentation and evaluation of evidence.
Code of Criminal Procedure (Código Procesal Penal): Governs the use of evidence in criminal cases, ensuring procedural fairness and establishing how evidence should be handled during criminal trials.
Constitution of Costa Rica: Ensures that evidence is collected and used in a manner that respects constitutional rights, such as the right to a fair trial, the presumption of innocence, and protection against self-incrimination.
2. Types of Evidence
Costa Rican law recognizes various types of evidence, which can be presented in both civil and criminal cases:
Documentary Evidence: Written documents, contracts, letters, emails, and other written materials can be used to support a case. These must generally be authenticated.
Testimonial Evidence: Statements given by witnesses who have knowledge of the facts of the case. Witnesses can be questioned by both parties, and the court assesses the reliability of their testimony.
Real Evidence: Tangible objects, physical evidence, and material things related to the case (such as weapons, photographs, or items recovered from a crime scene) can be used to prove facts.
Expert Evidence: In cases requiring specialized knowledge (e.g., medical, scientific, or technical), expert witnesses can provide their opinions to help the court understand complex issues.
Digital Evidence: Electronic records, emails, text messages, and other digital forms of evidence are increasingly used in the legal process. Costa Rican law provides for the admissibility of such evidence, but it must meet the requirements for authenticity.
3. Admissibility of Evidence
Relevance: Evidence must be relevant to the matter at hand. Irrelevant evidence will be excluded by the court.
Legality: Evidence obtained through illegal means (such as torture, illegal searches, or coerced confessions) is inadmissible. Costa Rican law is strict in ensuring that evidence respects the Constitutional rights of individuals, particularly in criminal matters.
Exclusionary Rule: In criminal cases, evidence that violates constitutional rights or is obtained illegally (for example, through violations of privacy or illegal detentions) is excluded from the trial process.
Hearsay Evidence: Hearsay (testimony about what someone else has said, rather than direct knowledge) is generally not admissible. However, there are exceptions, such as for business records, statements made by persons who are unavailable to testify, or statements made in certain formal or legal contexts.
4. Burden of Proof
Criminal Cases: In criminal matters, the prosecution carries the burden of proof. The accused is presumed innocent until proven guilty, and the prosecution must prove the defendant’s guilt beyond a reasonable doubt.
Civil Cases: In civil matters, the plaintiff (the person bringing the lawsuit) carries the burden of proof, and the standard of proof is typically preponderance of the evidence (i.e., the claim is more likely to be true than not).
5. Role of the Judge
The judge in Costa Rica plays an active role in overseeing the trial, ensuring fairness, and evaluating the evidence presented by the parties.
In criminal cases, judges are responsible for ensuring that evidence is obtained in accordance with constitutional rights. Judges have the power to admit or exclude evidence, and they are the primary decision-makers in assessing the credibility and weight of the evidence.
Judges are required to be impartial and to base their decisions solely on the evidence presented in court.
6. Witnesses and Testimonies
Witnesses: Witnesses are called to testify to facts they know. They must take an oath or affirmation to tell the truth, and their credibility may be challenged by the opposing party.
Expert Witnesses: Experts are called to provide specialized knowledge in certain areas and may be appointed by the court or by either party. Their testimony is meant to clarify complex technical or scientific issues.
Cross-Examination: Both parties in a case have the right to cross-examine witnesses, challenging their testimony and testing the reliability of their statements.
7. Privileged Communications
Attorney-Client Privilege: Communications between an attorney and their client are privileged and cannot be disclosed in court without the consent of the client. This is in line with international human rights standards and guarantees the confidentiality of legal representation.
Spousal Privilege: Spouses may be exempt from testifying against each other in certain circumstances.
8. Illegally Obtained Evidence
Evidence that is illegally obtained (such as through illegal searches, wiretapping, or other violations of rights) is inadmissible under Costa Rican law. This is in line with the exclusionary rule that ensures that constitutional rights are respected throughout the legal process.
Confessions obtained through coercion or in violation of the defendant’s rights are also inadmissible.
9. Electronic and Digital Evidence
Digital Evidence: With the increasing use of technology, Costa Rican law permits the presentation of electronic evidence, such as emails, text messages, and social media posts. However, such evidence must meet specific requirements for authenticity and reliability.
Authentication: Electronic evidence must be authenticated by establishing its chain of custody and proving that it has not been tampered with.
10. Appeals and Evidentiary Errors
Appeals: In Costa Rica, decisions made by a lower court regarding the admission or exclusion of evidence can be appealed. If it is believed that the lower court made an error in evaluating the evidence, the party can appeal to a higher court, which will review the decision.
Review of Evidence: Appeals courts may review the facts of a case, including the validity of the evidence presented at trial, to ensure that justice was done.
11. Special Procedures for Certain Cases
In certain types of cases, such as those involving national security or organized crime, special procedures may be followed to protect sensitive evidence. For example, in cases where the release of certain information might compromise public safety, evidence may be handled with extra confidentiality.
Conclusion:
The Law of Evidence in Costa Rica is designed to ensure that all evidence used in legal proceedings is obtained lawfully, is relevant, and respects the rights of individuals. Costa Rican law places a strong emphasis on the legality and authenticity of evidence, while also ensuring that constitutional rights are upheld. Whether in civil or criminal cases, the judicial system ensures that evidence is presented and evaluated fairly, with due process protections in place for all parties involved. The country's adherence to international human rights standards also influences its evidentiary rules, especially in relation to protections against the use of illegally obtained evidence.

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