This study was planned to investigate working and non-working children's peer relationships, social support perceptions and perfectionism. Data from 1,390 children were analyzed. Data collection instruments included General Information Form, Peer Relationships Scale, Social Support Evaluation Scale for Children and Adolescents, and Multidimensional Perfectionism Scale. Data were analyzed by using Mann Whitney U-Test. The results showed that working caused a statistically meaningful difference in the Opening Self and Loyalty subdimensions of the Peer Relationships Scale; the Friend Support subdimension of the Social Support Evaluation Scale for Children and Adolescents and their total scores; and in the Order, Overemphasis on Mistakes, Suspecting Behaviors, Family Relationships and Family Criticism subdimensions of the Multidimensional Perfectionism Scale (p<0.01, p<0.05).