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This study aims to define the effect of transformational leadership on knowledge sharing; this study also seeks to analyze the mediating role of self-efficacy and trust in leaders in the connection between transformational leadership and knowledge sharing. This quantitative study used a questionnaire with a simple random sampling technique to collect data. Questionnaire measurement uses a Likert scale from 1 – 5, distributed with the help of jakpat.net as a media survey. Respondents in this study were staff-level hotel employees throughout Indonesia, with a total of 143 respondents. Data were analyzed and processed by the PLS-SEM method and path analysis. The bootstrapping method is used to test the hypothesis. This study indicates that transformational leadership has a positive and significant impact on knowledge sharing, transformational leadership has a positive and significant effect on self-efficacy, and transformational leadership has a positive and significant impact on trust in leaders. Then self-efficacy and faith in a leader positively and significantly impact knowledge sharing. It has also been confirmed that there is a mediating role of self-efficacy and trust in the leader in the indirect relationship between transformational leadership and knowledge sharing.

The purpose of this research was to examine and analyze Self-Efficacy and Organizational Citizenship Behavior against Knowledge Sharing mediated by Abusive Supervision. The research was conducted in securities companies that are members of the Indonesia Stock Exchange located in Central Java and Yogyakarta with a sample size of 100 respondents, using quantitative methods. The data collection technique by using a questionnaire that is distributed via a google form. Statistical techniques use SEM (structural Equation Modeling) with the help of SMART PLS software. The research results found ; (i) there is a significant negative influence between Self-Efficacy on Abusive Supervision, (ii) there is a significant negative effect between Organizational Citizenship Behavior on Abusive Supervision, (iii) there is a negative and significant influence between Abusive Supervision on Knowledge Sharing, (iv) there is a positive and significant influence between Self-Efficacy on Knowledge Sharing through Abusive Supervision, (vi) there is a positive and significant influence between Organizational Citizenship Behavior on Knowledge Sharing through Abusive Supervision of employees of securities companies members of the Indonesia Stock Exchange located in Central Java and DIY.