Human resources are undoubtedly the key resources of every company and play an essential role in achieving the goals and success of the company as a whole. In this context, motivation, job satisfaction and work performance have been recognized as key concepts related to human resources, and they have been increasingly discussed recently. Numerous researches have been conducted on their mutual relationship and attempts are made to define what motivates employees the most and what are the elements of job satisfaction that employees consider the most important. It also attempts to investigate the impact of motivation and job satisfaction on employee performance. For the purposes of preparing this final paper, a survey was conducted through a questionnaire and interview, and data and information on motivation, job satisfaction and work performance of employees in the selected company were collected. The aim was to examine which and to what extent individual factors of motivation and job satisfaction contribute the most to work success, and to assess the compliance of the motivation system with the wishes of employees of the selected company. The results of the research showed that the greatest motivation factors for employees are salary and job security, and the best assessment was given to the elements of work named the regularity of salary payments, working hours and the permanence of employment. In self-assessment of work performance, employees rated their reliability and adaptability best. Further analysis of the collected data and information revealed that the motivational system is not fully aligned with the wishes of either employees or management, and that in the field of tangible and intangible rewards, promotion process and education can be refined and improved to make the whole system become harmonized and effective.