The purpose of this paper is to assess the relationship between job motivation, compensation satisfaction and employees' job satisfaction in tax organization. In this study, survey research method has been used to collect required data. For the purpose of this case study, a 210 people sample has been selected from research population using simple random sampling method. In order to measure employees' job satisfaction, Susan J Linz (2002) questionnaire and in order to measure compensation satisfaction Ogenyi Ejye Omar's model (2006) has been used. This model includes four factors; Payment Justice, Organizational designed procedures, supervisor and performance-based pay. Also Herzberg and Kitchener model has been used to measure employees' motivation. Data analysis with Pearson correlation coefficient shows a positive relation between job motivation and compensation satisfaction. Qualitative approach implies that organizational justice in payments in important and employees who feel financially discriminated, their job satisfaction is lower compared to other employees.