Contribution of Leadership, Work Discipline, and Job Satisfaction to Improving the Performance of Bank Mandiri Employees: Study on Bank Mandiri KCP Stabat

Aims: This study aims to analyze the contribution of leadership, work discipline, and job satisfaction to improving the performance of Bank Mandiri employees, focusing on case studies at KCP Stabat. Study Design: The type of research used is quantitative research with an associative approach to determine the partial and simultaneous influence of independent variables on bound variables. Place and Duration of Study: The research was carried out at Bank Mandiri KCP Stabat Kuala Begumit, Langkat Regency for four months, from March 2025 to June 2025. Methodology: The research population is all employees of Bank Mandiri KCP Stabat which is 31 people, so the sampling technique uses total sampling. The research instrument was in the form of a questionnaire with a Likert scale. Data analysis was carried out through validity, reliability, classical assumptions, multiple linear regression, t-test, F-test, and determination coefficients. Results: The results of the study show that leadership, work discipline, and job satisfaction each have a positive and significant effect on employee performance. Simultaneously, all three variables contributed 41.9% to performance, while the rest were influenced by other factors outside the study. The leadership variable had the dominant influence with the largest regression coefficient. Conclusion: The performance of Bank Mandiri KCP Stabat employees can be improved through strengthening leadership, implementing consistent work discipline, and increasing job satisfaction.