This paper intends to investigate the criminal law features of the offense of gratification in public office, concentrating on the case involving Zarof Ricar, a former official of the Supreme Court of the Republic of Indonesia. Gratification constitutes a clandestine form of corruption wherein a public worker or state official accepts presents or perks pertinent to their role, in violation of their official responsibilities. According to Article 12B of Law No. 31 of 1999 in conjunction with Law No. 20 of 2001 on the Eradication of Corruption Crimes, any gratification that cannot be substantiated as non-bribery is classified as a criminal act of corruption. This study utilises a normative legal methodology incorporating legislative, conceptual, and case analyses. Data were gathered through an analysis of pertinent legislation, judicial rulings, and legal scholarship. The findings indicate that Indonesia's legal system regarding gratification establishes a robust basis for preventing and addressing corruption, especially through the implementation of the reverse burden of evidence principle. In the case of Zarof Ricar, the components of the gratification offence were satisfied, as the gifts he received were associated with his authority and position within the judiciary. The legal responsibility assigned to Zarof Ricar highlights the significance of integrity, transparency, and accountability among public authorities, particularly within the court system. The study aims to provide a foundation for enhancing legal reform and ethical governance in Indonesia's public institutions.