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This study aims to analyze the influence of work ethic, work spirit, and physical work environment on employee performance at the Regional Revenue, Financial, and Asset Management Agency (BPPKAD) of Kediri City. This research employed an associative quantitative method with a descriptive approach. The population consisted of 215 employees, and a purposive sampling technique was used to select 100 respondents. Data were collected using a five-point Likert scale questionnaire that had been tested for validity and reliability. Data analysis was conducted through classical assumption tests and multiple linear regression analysis using SPSS version 26. The results indicate that work ethic, work spirit, and physical work environment have a positive and significant effect on employee performance, both partially and simultaneously. The coefficient of determination (R²) value of 0.693 shows that 69.3% of employee performance variation can be explained by the three independent variables. Therefore, improving employee performance at BPPKAD Kediri City can be achieved by strengthening work ethics, increasing work spirit, and creating a comfortable and productive physical work environment.

This study aims to analyze the effect of physical work environment, work motivation, and teamwork on employee performance at PT Adira Dinamika Multi Finance Tbk. The research employed a quantitative approach with a survey method involving all 51 employees as the total sample using a saturated sampling technique. Data were collected using a five-point Likert scale questionnaire developed from the theories of Herzberg, Luthans, and Tuckman. Validity and reliability tests were conducted to ensure instrument quality, while data were analyzed using multiple linear regression with SPSS version 26. Classical assumption tests, including normality, multicollinearity, heteroscedasticity, and autocorrelation, were performed to verify the model’s adequacy. The results indicate that the physical work environment, work motivation, and teamwork have positive and significant effects on employee performance, both partially and simultaneously. Among these variables, work motivation exerts the strongest influence on performance improvement. Overall, the three independent variables explain 84.2% of the variation in employee performance, while the remaining 15.8% is explained by other factors not included in the model. These findings highlight the importance of strengthening employee motivation, improving workplace conditions, and fostering a collaborative work culture to enhance human resource management effectiveness in the financial service industry.

The research findings indicate that, on a partial basis, only the Work-Life Balance variable has a significant effect on employee performance, with a significance value of 0.029 and a t-value of 2.311. In contrast, the Physical Work Environment and Interpersonal Communication variables show no significant impact, with significance values of 0.774 (t-value -0.290) and 0.217 (t-value 1.264), respectively. Simultaneously, the three variables do not exhibit a significant influence on performance, as evidenced by a significance value of 0.056 on an F-value of 2.845. The coefficient of determination (Adjusted R²) of 0.240 suggests that the model explains only 24% of the variability in employee performance. These results imply that employee performance at PT Daihatsu Jolo Abadi is more strongly influenced by work-life balance than by the physical work environment or social interactions in the workplace. Therefore, strengthening work-life balance should be a strategic priority for enhancing performance, alongside exploring other relevant variables for future studies.

Educational supervision is a very important thing to do to improve the quality of education. Teacher performance is a result of work achieved by a teacher in carrying out the tasks assigned to him based on skills, experience, and sincerity as well as time.The research method in this thesis is a descriptive qualitative approach, data collection can use primary data sources and secondary data sources, data collection techniques using observation, interviews, documentation.The results of the study show that the supervisory role of the school principal in improving teacher performance at Nurul Falah Islamic Middle School Mangaran Situbondo is to provide guidance to teachers related to theoretical and practical learning, involve teachers in training, provide opportunities for teachers to take part in various education and training at the cluster or sub-district level regularly, subject teacher deliberations (MGMP), supervising teacher deliberations (MGP), and teacher working groups (KKG), as well as seminar workshop discussions, and provision of learning resources. providing motivation to teachers, collaborating with foundations that oversee the Nurul Falah Islamic Middle School Mangaran Situbondo, school committees, and the community. The motivation of school principals in improving teacher performance at Nurul Falah Islamic Middle School Mangaran Situbondo through regulation of the physical environment, regulation of the work atmosphere, discipline, applying the principles of rewards and punishments.