en Occupational and Industrial Health Occupational and Industrial Health پژوهشي Original Article <div><span style="font-size:14px;"><span style="font-family:Times New Roman;"><span style="line-height:normal"><b>Background:</b> This study aimed to evaluate the ergonomics of the office workplace and determine the cut-off point of the workstation layout checklist (WSLC) and the work posture checklist (WPC) of computer users.</span><br> <span style="line-height:normal"><b>Methods:</b> The descriptive-analytical was performed among 200 office staff willing to cooperate at the university. To collect data and evaluate workstations and the posture of employees, the WSLC and WPC were used, respectively. The ROC curve was used to determine the cut point of the final score of the checklists.</span><br> <span style="line-height:normal"><b>Results:</b> The optimal cut-off point value for the WSLC was 14.5 (sensitivity = 91.2, specificity = 77.8, and area under the curve = 0.89). Similarly, the best cut-off point value for the WPC was identified as 8.5, with a sensitivity of 93.9, specificity of 71.8, and area under the curve of 0.88. The evaluation results showed that 25 % of the workstations and 32 % of the working postures of the employees were at an undesirable level.</span><br> <span style="line-height:normal"><b>Conclusion:</b> Determining the cut-off point for valid WSLC and WPC plays a crucial role in evaluating the cost, facilitation, speed, and repetition associated with office workplaces, thereby categorizing them as either desirable or undesirable. A quarter of the workstations and a third of the working postures of the employees were evaluated as undesirable<font color="#000000">.</font></span></span></span></div> Computer, Posture, Users, Workplace, Office, 57 62 http://jhehp.zums.ac.ir/browse.php?a_code=A-10-109-3&slc_lang=en&sid=1 Seyvan Sobhani seyvan.sobhani21@gmail.com 100319475328460013993 0000000156037812 No Department of Occupational Health Engineering, Faculty of Health, Qazvin University of Medical Science, Qazvin, Iran; Department of Occupational Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Sara Tabanfar saratabanfar.1994@gmail.com 100319475328460013994 0000000208016774 No Department of Occupational Health Engineering, Faculty of Health, Qazvin University of Medical Science, Qazvin, Iran; Department of Occupational Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Ali Safari Variani safary2400@yahoo.com 100319475328460013995 0000000258031075 No Department of Occupational Health Engineering, Faculty of Health, Qazvin University of medical sciences, Qazvin, Iran. Sakineh Varmazyar Svarmazyar@qums.ac.ir 100319475328460013996 000000026096072X Yes Department of Occupational Health Engineering, Social Determinants Health Research Center and Research Institute for Prevention of Non-Communicable Diseases, Faculty of Health, Qazvin University of Medical Sciences, Qazvin, Iran.