This paper presents a social work study to investigate the effects of employees’ income and age on their mental health. The study has accomplished among a sample of 150 randomly selected employees who worked for Esfahan steel company located in city of Esfahan, Iran. The study uses a standard questionnaire, which is adopted from Goldberg and Williams (2000) [Goldberg, D., & Williams, P. (2000). General health questionnaire (GHQ). Swindon, Wiltshire, UK: NFER Nelson.]. The results of the implementation of ANOVA test have revealed that while there was a significant and positive relationship between employees’ salary and mental health, there was not any meaningful relationship between employees’ age and mental health.