Evidence is anything that tends to prove or disprove a material or relevant fact alleged in a lawsuit or other legal proceeding. Witness testimony, documents, contracts, email messages, photographs, medical bills, video images, and voice recordings are common pieces of evidence.
In Oregon, evidence is regulated by both state statutes and rules of court, specifically the Oregon Rules of Evidence. These rules determine what evidence is admissible in court to prove or disprove facts at issue in a lawsuit or legal proceeding. Evidence can be direct or circumstantial and includes witness testimony, documents, contracts, email messages, photographs, medical bills, video footage, and voice recordings. The admissibility of evidence in Oregon courts is subject to relevance, meaning the evidence must be related to the issues being decided, and it must not be overly prejudicial, confusing, or a waste of time. Additionally, evidence must be authenticated or verified to be what it purports to be. Certain types of evidence, such as hearsay, are generally not admissible unless they fall under an exception to the hearsay rule. The Oregon Evidence Code (OEC) provides the framework for the introduction and exclusion of evidence, and attorneys must navigate these rules to effectively present their cases.