Optimal Break and Job Rotation Schedules of High Repetitive – Low Load Manual Tasks in Assembly Lines: an OCRA – Based Approach

Productivity and ergonomic risk in human based production systems: A job-rotation scheduling model

“…Job rotation is considered as an appropriate organizational strategy to reduce physical workload (Paul et al 1999, Boenzi et al, 2013a, 2013b in human-based production systems (e.g. assembly lines), to prevent musculoskeletal disorders, to increase job satisfaction and thus productivity.…”

“…However, this solution also means increasing the cycle time, and thereby reducing the production rate. Boenzi et al (2013b) developed a two step approach which aimed to find one or more job rotation and break schedules, which have the overall effect of reducing and balancing the human workload among employees, maintaining a constant level of production without taking into account differences in employees' skill levels.…”

A genetic algorithm approach to design job rotation schedules ensuring homogeneity and diversity of exposure in the automotive industry

“…engineering, processes, and product changes on the assembly line), the job rotation plans have been recommended as an organizational measure to reduce the exposure in workplaces to several risk factors and, thus, increase the variability and reduce worker fatigue and monotony ( Jorgensen et al., 2005 ; Rodriguez and Barrero, 2017 ; Yung et al., 2012 ). Within the several solutions found in the literature to optimize job rotation plans, there are mixed-integer programming to upper extremities ( Boenzi et al., 2013 ; Digiesi et al., 2018 ; Xu et al., 2012 ), minimizing net present cost within a lean manufacturing cell ( McDonald et al., 2009 ), multi-criteria fuzzy-genetic algorithms for assembly line balancing ( Rajabalipour Cheshmehgaz et al., 2012 ), and diploid genetic algorithm (GA) in dynamic environments ( Bhasin et al., 2016 ).…”

Assessment Of Worker Posture In Herbicides Production And Break Time Determination Using OCRA Index Method

“…Cognitive status and repetitive low-risk work assignments were analyzed using the OCRA method and combine the result with Electrodermal Activity (EDA) [12]. Boenzi [13] evaluated workload risk in the car seat assembly process by the OCRA index and found both optimal break and job rotation schedules used integer programming models. This study has not broken down the work in detail and did not show the right and left-hand chart.…”