Witness
Overview
A witness (Korean: 증인; 證人, witness) is a person who states facts he or she directly experienced or perceived in public proceedings such as courts, investigative agencies, and the National Assembly. In criminal and civil trials and various litigations, hearings, and investigative committees, testimony becomes key evidence revealing the truth of a case, and legal systems in each country provide for witnesses' duties to appear, take an oath, and testify, while also establishing punishment for perjury and witness protection systems. The concept of a witness extends beyond the courtroom to historical records, social movements, religious confessions of faith, and more broadly the act of testifying to truth.
Main Content
Legal Status and Types of Witnesses
Witnesses are generally divided into fact witnesses (eyewitnesses), who state experienced facts as they are, and appraisers/expert witnesses, who present opinions based on specialized knowledge. In trial practice, a witness requested by a party is called a requested witness, and a witness adopted by the court ex officio is called a court-called witness; at the investigation stage, a reference person (reference person investigation) is strictly distinguished from a courtroom witness. Depending on whether the witness is expected to make statements favorable to a party, they are also classified as friendly witnesses and unfriendly witnesses.
Duties of Witnesses
A witness who receives a lawful summons bears three duties. First is the duty to appear; failure to appear without just cause results in sanctions such as fines, detention, or compelled appearance. Second is the duty to take an oath; they must swear in court to tell the truth according to conscience. Third is the duty to testify; they must answer questions without false statements. Refusal to testify without just cause is also subject to sanctions, but exceptional rights of refusal recognized by law are guaranteed.
Right to Refuse Testimony
A witness is not compelled to make statements disadvantageous to himself or herself (prohibition of compelled self-incrimination). The Criminal Procedure Act provides the right to refuse testimony concerning oneself or relatives (Article 148) and the right to refuse testimony concerning secrets learned in the course of duty by lawyers, doctors, religious workers, and others (Article 149). However, exceptions may be recognized where significant public interests such as national security take precedence.
Crime of Perjury
If a sworn witness makes a false statement contrary to memory, the crime of perjury under Article 152 of the Criminal Act is established, and in criminal cases it is punishable by imprisonment for not less than 1 year and not more than 10 years. Perjury is strictly treated as a crime undermining trust in judicial procedures, but distinguishing errors of memory from intentional lies is a key issue in practice.
Witness Protection Systems
Witnesses are easily exposed to the risk of retaliatory crimes, and under the Act on Protection of Specific Crime Reporters, etc., the Sexual Violence Punishment Act, the Child Abuse Punishment Act, and other laws, measures such as personal safety measures, closed and anonymous testimony, video-linked testimony, use of pseudonyms, and accompaniment and protective facility support are provided. Child and disabled witnesses are assisted by statement assistants to help communication. International tribunals such as the International Criminal Court (ICC) also have a Victims and Witnesses Section to manage the safety and mental health of victims and witnesses.
Credibility Issues in Testimony
Psychological and forensic research has repeatedly confirmed that witness memory is easily contaminated by post-event information, leading questions, and confirmation bias. Analyses by the Innocence Project in the United States also showed that a significant number of wrongful convictions were caused by eyewitness misidentification. For this reason, lineup procedure improvements, double-blind administration, and audio and video recording of statements are being standardized.
Historical and Social Significance
In transitional justice bodies such as the Truth and Reconciliation Commission and the South African Truth and Reconciliation Commission, testimony functioned as a social mechanism for restoring records of oppression. In National Assembly hearings and parliamentary investigations, the attendance of witnesses and reference persons also becomes a key agenda item, and testimony remains as a public record beyond an individual statement.
Recent Trends
The biggest variable in the witness system in 2024–2025 is digital evidence and AI. With the emergence of deepfakes and voice-phishing composites, the task of verifying both the credibility of witness memory testimony and video evidence has grown, and courts are strengthening authenticity examination procedures and metadata verification. Remote video witness examination, which took hold after COVID-19, has become a permanent system in international trials and small cases, and at the same time guidelines have been prepared to control the risk of perjury and witness tampering in non-face-to-face environments. With amendments to the Stalking Punishment Act and the Sexual Violence Punishment Act, personal protection for victim witnesses and measures to prevent secondary victimization have been strengthened, and witness retaliation crime response manuals have been overhauled at the correctional and police stages. In trial practice, research showing that witness confidence and accuracy are not proportional is widely cited, and case law and sentencing standards are accumulating so that a conviction is not based solely on a confident eyewitness statement. The spread of restorative justice and victim-centered trial models is also creating a trend to redefine the witness's status from a mere source of evidence to a participant in the procedure.
Related Topics
- [[Testimony]]
- [[Witness Examination]]
- [[Perjury]]
- [[Evidence]]
- [[Witness Protection System]]
- [[Statement Assistant]]
- [[Truth and Reconciliation Commission]]
- [[Eyewitness Misidentification]]