This paper has as main purposes the examination of the moderating role of the perceived organizational support in the relation of job satisfaction with job commitment for all participants, respectively, for the group consists of intens and volunteers. Sample has 157 participants aged between 20 and 68 (M=30.52, SD=10.14), both men (28%) and women (72%). The moderating effect is statistically significant on the relationship mentioned above only for the group of interns and volunteers, but not at a global or vocational level. Also, a significant positive relationship is observed between satisfaction and commitment. In addition, there is a stronger link between job satisfaction and continued type for non-vocational jobs than vocational ones.