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The Relationship Between the Ergonomic Situation of the Workstations and Musculoskeletal Disorders With the Quality of Work Life And Demographic Variables in the Administrative Staff of the Tehran Municipality
Pezhvak Ghasemzade, Shahnaz Tabatabaei, Amir Kavousi, Mahnaz Sareme,
Volume 5, Issue 3 (Journal of Ergonomics-Fall 2017)
Abstract

Background: Attention to the workstations of the employees and their quality of work life has become increasingly important due to the increased competition in the organizations. The present study aimed to investigate the relationship between the ergonomic situation of the workstations and musculoskeletal disorders with the quality of work life and demographic variables in the administrative staff of the Tehran Municipality. 
Methods: The present study was a descriptive and analytical one. The statistical population included a total of 600 persons, working in one of the regions in the Tehran Municipality. Of the 600 staff, a total of 255 were selected as the available sample group. The instruments consisted of the questionnaires, including the individual and occupational information, the Nordic questionnaire, the Walton Quality of work life, and the checklist of the ergonomic indices of the working environment for the administrative staff. In order to analyze the data, Student’s t-test and multiple regression analysis were used.
Results: In this study, the majority of the samples were females (56.9%) with a mean age of 33 years. A significant positive relationship was observed between all the ergonomic indices and the quality of work life. Significant correlations among the parameters such as age, education, sleeping at night, psychological conditions, musculoskeletal disorders of the neck, shoulder, and foot were observed simultaneously with the quality of work life. The quality of work life of an employee could be predicted through the musculoskeletal disorders and demographic variables but could not be predicted by the ergonomic indicators. 
Conclusion: In this study, a relationship existed between the ergonomic condition of the workstations and musculoskeletal disorders with the quality of work life and demographic variables. Therefore, the physical condition and the quality of the work life of the employees would be positively affected by the improvement of the ergonomic condition of the workstations. 


The mediator role of occupational self-efficacy in the relationship between professional development and job commitment and satisfaction among sports and the youth department’s staff
Mohsen Shir Mohammadzadeh1, Abolfazl Ghasemzadeh Alishahi, Mehdi Kazemzadeh Beytali,
Volume 6, Issue 1 (Journal of Ergonomics 2018)
Abstract
Background: The aim of present study was to investigate mediator role of occupational self-efficacy in the relationship between professional development and job commitment and satisfaction among staffs of Sports and the Youth Department of East Azarbaijan Province.
Methods: Research sampling method of the study is classified random method. The research statistical population involved 322 participants. Krejcie and Morgan table was used to determine the sample size of the study. According to the table, 203 participants were selected as the sample size. The scholar made questioners of satisfaction inventory, Alman and Mir’s job commitment inventory and Sharar’s et.al general self-efficacy inventory were used for data collection.
Results: Statistical analysis of the data indicated that there is a significant and positive relationship between professional development and job satisfaction and commitment. Moreover, the results of the study indicated that there is a significant and positive relationship between self-efficacy and job commitment and satisfaction. The highest level of significant correlation was obtained for the relationship between professional development and job satisfaction and the lowest significant correlation was obtained for the relationship between professional development and self-efficacy.
Conclusion: Finally, results confirmed the mediator role of occupational self-efficacy in the relationship between professional development and job commitment and satisfaction.

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