The Covid-19 pandemic situation requires employees to implement health protocols in the work environment as a way to reduce the potential for transmission. This study aims to analyze the influence of psychological capital, work stress, and leader-member exchange on employee productivity in the PT KAI DAOP 1 Jakarta area, which is mediated by compliance with health protocols. There is no prior study about employee compliance with covid health protocol, especially in transportation companies. The theories discussed to support the preparation of this study are in the form of theories related to psychological capital, work stress, leader-member exchange, compliance theory, and employee productivity. This study used respondents in the form of 391 employees of PT KAI in the Daop 1 Jakarta region with a cross-sectional research method using a questionnaire. The analysis of this study used SEM and was carried out with Lisrel 8.80 software. The results showed that there was a relationship between psychological capital, work stress, leader-member exchange, and in employee productivity in PT KAI DAOP 1 Jakarta area, which is mediated by compliance with health protocols.