The topic of this thesis is how the effects of organizational characteristics affect job satisfaction - a comparison of the public and private sectors. It is characterized by vertical and horizontal differentiation and centralization and decentralization. Each feature in the organizational structure has an important role in the division of tasks, their execution, the distribution of tasks within the organization and the impact of centralization and decentralization on the division of labor. The organizational structure represents the comprehensiveness of the links between factors and production, that is, it connects all factors. Job satisfaction is an individual's satisfaction in performing tasks, and how organizational complexity can affect an individual's satisfaction. Job satisfaction is individual, and can affect the overall work and contribution of employees in the organizational structure. The paper conducts research that tries to study how and how the complexity of the organizational structure affects job satisfaction in comparison with the public and private sectors, ie they try to see the differences in the complexity of the organization, and how they affect job satisfaction. The research is conducted through a survey questionnaire that is filled out online. The questionnaire consists of 40 questions, of which 6 questions are related to the basic data of respondents, 21 questions were answered by selecting a linear method from 1 to 5, while 13 questions were answered in the form of multiple choice, which was filled by 80 respondents different ages, education and years of service. Of the 80 respondents, 40 respondents are employed in the public sector and the other 40 in the private sector. Research has shown that the effects of organizational structure have an impact on job satisfaction, that there are differences in job satisfaction in the public and private sectors.