History and Objectives: The presence of mental problems among personnel of industrial factories is one of the major problems. Since there is little information on mental problems and its effect on performance, this study was carried out on personnel of Hamid porcelain factory in Kashan.

Materials and Methods: The descriptive protocol of this study was performed on all of the personnel in two stages. At first stage, after taking letter of satisfaction, GHQ test was applied with cutting marks of 21 and 22 for male and female individuals respectively and suspected ones were selected for diagnostic interview and then DSM-IV criteria were applied.

Results: This study was conducted on 145 cases and the incidence rate for mental abnormality was 34.5%. In order of prevalence, the disturbances were as follows: Global anxiety (MDD), major depression (MDD), dysthymic disorder (DD) and double depression. The incidence was greater with increasing age, knowledge and lack of interest.

Conclusion and Recommendations: There was a serious incidence of mental disorder among personnel and with regard to its prognosis and complications, it is recommended to carry out similar studies in other factories. In addition, it is recommended to consider the interacting factors in the development of such disorders.