The object of this research is to outline a method of building a measurement scale assessing staff satisfaction Moroccan public administrations. The measures were built from a survey of 237 functionaries in the Casablanca-Settat region. The methodology is based on the steps recommended by the paradigm of Churchill (1979), specifically its exploratory phase based on qualitative approach using semi-structured interviews and quantitative approaches based on exploratory factor analyzes and Cronbach's alpha. This paradigm allows building rigorously instruments standard questionnaire to measure multiple scales. The results reveal a structure of staff satisfaction in 5 components with a total explained variance of 80,25%. Only the first component: Remuneration and career management restores 33,35% of the total variance. The size and skills training was excluded in this exploratory phase, it does not explain enough variance in satisfaction. The analysis of the reliability of the scales of the principal components shows that the items of each scale are correlated and coherent with each other and vary between 0,681 and 0,931. It is the same for the reliability of the total scale of which Cronbach's alpha of 0,841.