Mohammad Khandan - Department of Ergonomics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Maryam Maghsoudipour - Department of Ergonomics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Shahram Vosoughi - Department of Health Sciences, Faculty of Health, Safety and Environment, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Objectives: This study aimed to evaluate and analyze the ergonomic behaviors order to select the best work shift group in an Iranian petrochemical Company, in ۲۰۱۰. Methods: The methodology was based on the Ergonomic Behavior Sampling (EBS), and performed using ELECTRE method. In this study ۱۱۴۷ behaviors were observed. Results: The results indicated that ۴۳.۶% of workers’ behaviors were unergonomic. The most frequent unergonomic behavior was amusing of legs while load lifting with ۸۳.۰۱% of total unergonomic behaviors observations. Using ELECTRE method, most effective shift group and least attractive alternatives for intervention were selected in the company. Discussion: Findings declare high number of unergonomic behaviors. Catastrophic consequences of accidents in petrochemical industry necessitate paying more attention to workers’ ergonomic behaviors in the workplace.

Ergonomic behavior, Ergonomic behavior sampling, ELECTRE