ABSTRACT Environmental problems caused by the production, operation and management models of businesses have led to the rapid deterioration of the ecological environment, and society has put forward new requirements for businesses to develop green management and ensure environmental sustainability, which has put pressure on businesses towards environmental sustainability. Therefore, environmental protection and environmental sustainability, which have become a matter of social concern and discussion, have become one of the main issues that attract the attention of researchers, and since the main source of environmental problems is human behavior, studies focusing on employees' green behaviors have started to be conducted in order to ensure environmental sustainability. Employee green behavior is a set of behaviors practiced by employees to reduce the negative impact on the environment and contribute to environmental sustainability. Through a series of studies by researchers on employee green behavior, the antecedents of employee green behavior have gradually expanded from personal factors (emotions, attitudes) to situational factors (leadership behavior, green climate). However, although existing research has reviewed employees' green behaviors, the theoretical foundations of the relationship between employees' green behaviors and the variables that affect them should also be analyzed and it should be clarified how antecedent variables affect employees' green behaviors. With this research, which was conducted as a literature review, the five-dimensional green employee concept was discussed, its structure was reviewed and the green behavior of employees was explained based on theories and its logic was tried to be systematized. It is hoped that the study will be a source of reference and inspiration for new researchers. Keywords: Employee Green Behavior, Sustainability, Environmental Sustainability