Introduction rganizational performance will not be optimal without optimal employee performance support. This suggests that employee performance factors are key to the progress and success of the organization. The performance of the organization is essentially a result of the work requirements that must be met by employees. The company's performance is determined by qualified employees (Fauzi, et al., 2016). Employee performance is one of the capital for the company to achieve its goals. So that employee performance is something that should be considered by the company leader (Rahardjo, et al., 2015). While Sulistiyani and Rosidah (2003) in Rifansyah (2016) suggested that performance is an outcome record that results from certain employee functions or activities carried out over a certain period of time. Related to the performance of employees of PT. Bank Mandiri (Persero), Tbk Medan Imam Bonjol's Business Banking Area for 2015 is Rp. 160 billion / month is given to 24 Relationship Managers and 16 Assistant Relationship Managers cannot be reached every month. In fact, the realization of lending tends to decrease every month. Likewise for 2016 there was a significant decrease in each month, even there was no achievement of the target at all. Decreasing performance of Relationship Managers and Assistant Relationship Managers is a phenomenon where employees should spend all their abilities for the progress of the company but this does not happen can also be caused by not absorbing the organizational culture properly. Not achieving this target unit can be used as an indication that the performance of the Relationship Manager and Assistant Relationship Manager has not been able to reach the desired standard. Regarding the above, the researcher in this study will discuss three factors that are identified to affect employee performance, namely organizational culture, organizational commitment and job satisfaction as stated by Fauzi, et al., (2016) that the factors that influence employee performance are motivation, organizational culture, compensation, leadership, job satisfaction, discipline, work environment and organizational commitment. Kotter & Heskett (2013) explain that organizational culture is believed to be one of the key variable factors of organizational performance success. To be able to manage the organization properly requires clear understanding and attention to organizational culture. In accordance with the context of empowering human resources, in order to produce professional employees with high integrity, there is a need for standard references imposed by an organization. The second factor that is identified that influences employee performance is organizational commitment. A high commitment to the organization will increase the responsibility and sincerity of employees in carrying out their duties. Employees who have a high commitment to the organization will work wholeheartedly and will fight for the progress of the organization, because they are aware of being part of the organization (Burhan, et al., 2013). The third factor that is identified that affects employee performance is job satisfaction. Indriyani (2015) said that employee performance will emerge if employees feel comfort and satisfaction at work. In the opinion of Robbins (2003) in Rahardjo, (2016) the term job satisfaction refers to the general attitude of an individual to the work he does. A person with a high level of job satisfaction shows a positive attitude towards the work itself while someone who is not satisfied with his job shows a negative attitude towards the job. # II. # Literature Review a) Performance An organization is established because it has goals to be achieved. In achieving its objectives, each organization is influenced by organizational behavior which is a reflection of the behavior and attitudes of the actors found in the organization, the most common activity assessed in an organization is employee performance, namely how employees do everything related to a job, position or role in organization (Sutrisno, 2013). Sutrisno (2013), more explicitly stated that employee performance is the result of employee work seen in the aspects of quality, quantity, work time, and cooperation to achieve the goals set by the organization. The company's performance is largely determined by the performance of qualified employees (Indriani and Waluyo, 2012). # b) Organizational culture Organizational Culture can be defined as a system of values, beliefs, assumptions, or norms that have long been valid, agreed and followed by members of an organization as a code of conduct and solutions organizational problems. (Sutrisno, 2013). Robbins & Coulter (2010) states that "Organizational culture or organizational culture is a set of values, principles, traditions and ways of working that are shared by and influence the behavior and actions of members of the organization". In most organizations, the values and practices that are shared (shared) have developed rapidly along with the times and really greatly affect how an organization is run. Organizational culture becomes the main identity or character of the organization that is maintained and maintained. Strong culture is a useful tool for directing behavior, because it helps employees to do better work so that every employee at the beginning of his career needs to understand the culture and how that culture is implemented. # c) Organizational Commitment The management of an organization must be required to increase growth and / or better progress over time. To support that, all depends on top management commitment (top management). Because commitment is the determination of decision making in achieving the stated goals (Edison, et al, 2016). The high level of organizational commitment is related to high employee performance (Syauta et al., 2012;Fitriastuti, 2013). Research conducted by Ghorbanpour, et. al., (2014) shows that organizational commitment has a positive and significant effect on employee performance. Organizations that are able to give full attention and make employees believe in the organization will gain employee commitment (Lee, et al., 2012). # d) Job satisfaction Robbins (2010) defines job satisfaction as a general attitude of an individual towards his work where in the job a person is required to interact with colleagues and superiors, follow organizational rules and policies, meet performance standards. Job satisfaction is a positive attitude of employees towards their work, which arises based on an assessment of the work situation (Umam, 2010). A pleasant work situation can be formed if the nature and type of work must be carried out according to the needs and values ofthe employee. Thus, satisfied employees prefer the work situation to dissatisfied employees who do not like the work situation. # III. # Methods This research was used a quantitative method with the population were employees of PT. Bank Mandiri (Persero), Tbk Medan Imam Bonjol's Business Banking Area, totaling 40 people. As for the sample in this study, employees of PT. Bank Mandiri (Persero), Tbk Medan Imam Bonjol's Business Banking Area, totaling 40 people. As for obtaining data, information and information from researchers do it in the following ways: 1) Interview, namely the data collected is obtained by direct communication with the object of research. 2). Questionnaire, which is a data collection technique by creating a list of questions related to the problem being examined by employees. Data Analysis using Path Analysis According to Ghozali (2011), to examine the effect of intervening variables, path analysis method is used. Path analysis is an extension of multiple linear regression analysis, or path analysis is the use of regression analysis to estimate causal relationships between variables (model causal) that have been determined previously. # IV. Results and Discussion a) Results # i. Partial Influence on Employee Performance. Data processing results are summarized in Table 1, as follows: Table 1: Coefficient of Determination I Model Summary b Based on first Table it is known that R = 0.844, which means that the relationship between organizational culture and organizational commitment simultaneously on employee performance is 84.0%. When referring to the interpretation of the degree of closeness of the relationship according to (Sugiyono, 2010), the degree of closeness of this relationship is very strong, because it is in the interval 0.80 -1.00. R Square obtained by 0.712 means 71.20% employee performance can be explained by organizational culture and organizational commitment while 28.80% can be explained by other factors not examined by this study. The results of the t test in this study are summarized in Table 2, as follows: Based on the output of Table 2, the significance value of organizational culture variables = 0,000 0.005 so it can be concluded that directly X3 has no significant effect on Y. In determining whether or not there is a mediating or intervening effect in the model, it can be seen from the following criteria: 1. If the value of the effect of the total path coefficient> the value of its direct influence, then there is an intervening / mediation relationship. 2. If the value of the influence of the total path coefficient the value of the direct influence is -2,247 so that it can be concluded that there is an intervening / mediation relationship. The results show that the significance value of the F test is 0.000 at ? = 0.05, this significance value is less than 0.05 so Ho's decision is rejected and Ha is accepted so that it can be said that the organizational culture and organizational commitment variables of PT. Bank Mandiri (Persero), Medan Imam Bonjol's Business Banking Area simultaneously has a significant effect on Employee Performance. This can be interpreted if organizational culture is applied consistently and supported by good organizational commitment, it will further encourage the performance of employees of PT. Bank Mandiri (Persero), Tbk Medan Imam Bonjol Business Banking Area. The results of the study prove the significance value of the variables of organizational culture and organizational commitment through the test = 0.000