ABSTRACT: This study aims to analyze the effect of organizational culture, work environment, and supervision on employee work discipline with work motivation as a mediating variable at PT Bank Rakyat Indonesia (Persero) Tbk Soekarno Hatta Airport Branch Office. The population of this study was all employees, with a total sample of 104 employees. The data analysis method uses the Structural Equation Model-Partial Least Square (SEM-PLS). The results of the study found that organizational culture has a positive and significant effect on work motivation. Organizational culture has a positive and significant effect on work discipline. The work environment has a positive and significant effect on work motivation. The work environment has no positive and insignificant effect on work discipline. Supervision has a positive and significant effect on work motivation. Supervision has a positive and significant effect on work discipline. Work motivation has a positive and significant effect on work discipline. Organizational culture positively and significantly affects work discipline and is mediated by work motivation. The work environment positively and significantly affects work discipline and is mediated by work motivation. Supervision has no positive and insignificant effect on work discipline which is mediated by work motivation.

KEYWORDS -Organizational Culture, Work Environment, Supervision, Work Motivation, Work Discipline