The dissertation aims to analyze the role of organizational trust in the job satisfaction of employees and understand the influence of demographic variables in this relationship based on three assumptions: H1 - Organizational trust has a positive impact on employee job satisfaction; H2 - Job satisfaction and confidence in the organization vary by gender and H3 - Job satisfaction and confidence in the organization vary by length of service. Therefore based on a quantitative methodology was carried out a case study in Executive Management Exploration, the company Petróleo Brasileiro S/A - PETROBRAS with the questionnaires Work Satisfaction Scale (EST) developed by Siqueira (1995) and Trust Scale Employee of the Organization (ECEO) prepared by Tamayo and Oliveira (2008) for a sample of 213 employees. This study concluded that: (1) the greater the confidence in the organizational soundness, financial recognition, ethical standards and promoting employee growth, the higher the satisfaction with colleagues, with the salary, with the head, with nature of work and promotions, (2) the lower the confidence in dismissal rules, will also be less satisfaction with colleagues, with the salary, with the leadership, with the nature of work and promotions, and, (3) the sex of the employee and his service time does not significantly influence the relationship trust and job satisfaction.