In recent years, studies began to pay attention to Tyler’s process-based model of regulations, which is one of the efforts emphasizing the importance of normative practices to encourage people to obey the law over instrumental practices. Following Tyler’s model, the current study tests procedural justice theory by investigating impacts of normative factors of procedural justice, normative alignment, and obligation to obey, along with instrumental factors of perceived police effectiveness and perceived risk of sanctions on citizens’ compliance with the law and cooperation with the police. For this purpose, we collected data by surveying 520 individuals in South Korea between July 2017 and August 2017, using a questionnaire used by the European Social Survey (ESS). Data analyses demonstrate that compliance is negatively influenced by procedural justice, but positively influenced by normative alignment and perceived effectiveness; cooperation is positively influenced by perceived effectiveness and perceived risk of sanctions; finally, obligation to obey is positively influenced by procedural justice, normative alignment, and perceived risk of sanctions. These findings support the procedural justice theory partially. Discussion, implication, limitations are followed.