The objective of this study is to determine how Organizational Justice affects Labor Satisfaction of personnel that works in canton Bolivar’s Public Institutions in Ecuador. Through survey monkey, a questionnaire was applied that was individually answered by a sample of 286 people working in different areas of four public entities of canton Bolívar, using Colquitt’s Organizational Justice scales and the Minnesota Satisfaction Questionary. Results indicated that there is a clear relationship between what people perceive as fair and unfair and the satisfaction they perceive about their work within canton Bolívar’s public institutions.