Balancing high operator's workload through a new job rotation approach: Application to an automotive assembly line

Moussavi, S.E.; Zare, Mohsen; Mahdjoub, Morad; Grunder, Olivier

doi:10.1016/j.ergon.2019.03.003

Cited by 36 publications

(23 citation statements)

References 31 publications

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“…However, our paper uses both real‐world data and random data to test the developed models. Moreover, the previous studies focused mainly on the ergonomic aspects of workplaces and not on economic criteria (Digiesi et al, 2018; Moussavi et al, 2019; Sana et al, 2019; Tharmmaphornphilas et al, 2003; etc.). However, both ergonomic and economic attributes of workplaces should be considered to gain sustainable and applicable schedules.…”

Section: Discussionmentioning

confidence: 99%

“…The general trend of the literature in job rotation‐scheduling is to take into account the expertise level of employees (Hochdörffer et al, 2018, Moussavi et al, 2018, 2019; Wongwien & Nanthavanij, 2017). We, therefore, paid great attention to the skill/expertise level of employees in our developed models.…”

Section: Discussionmentioning

confidence: 99%

“…Some studies in the literature allowed rotation every 2 h on a daily basis (Moussavi et al, 2019; Tharmmaphornphilas et al, 2003). In this study, the rotation of the employees between workstations was for 1‐h periods.…”

Section: Discussionmentioning

confidence: 99%

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A job rotation‐scheduling model for blue‐collar employees' hand–arm vibration levels in manufacturing firms

Adem

Dağdeviren

2020

Hum Ftrs & Erg Mfg Svc

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Job rotation schedules are generally conducted without considering hand–arm vibration (HAV) exposure especially in manufacturing firms, such as heavy industry, which confront ergonomic risks easily. This does not create any occupational health and safety (OHS) issues in the short term; however, certain occupational diseases such as the white finger disease are inevitable in the long‐term. This paper investigates how the risks of developing HAV‐related occupational diseases can be minimized by producing optimal job rotation schedules using ergonomic mathematical models. In the proposed models, both ergonomic and traditional aspects of manufacturing environments are considered. Moreover, the skill level and workers' day off preferences are also considered for total system efficiency. The mixed‐integer programming approach is used to formulate the models. The applicability of the models is tested using real‐world data. It is seen that the total assignment cost of the models increases when the ergonomic aims are included in the models. Thus, there is a conflicting relationship between economic and ergonomic aims. The main findings of the models show that the employees' HAV exposure level can be kept under control with one simple constraint. By employing these models, employees and employers can be protected in terms of not only OHS but also economic issues.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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A job rotation‐scheduling model for blue‐collar employees' hand–arm vibration levels in manufacturing firms

Adem

Dağdeviren

2020

Hum Ftrs & Erg Mfg Svc

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“…Calculate Organizational-Environment Factor (OEF). It is related to man's interaction with the design of working hours and shift work [22][23][24][25]. Equation 2is applied with the indicators obtained in the second step regarding the Personnel Habits (PH) and the Workday Analysis (WA); 100% ideal value.…”

Section: Interview Of the Workforcementioning

confidence: 99%

Novel Ergonomic Triad Model to Calculate a Sustainable Work Index for the Manufacturing Industry

et al. 2020

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The human factor is becoming increasingly relevant for its role in industrial development; therefore, it is necessary to evaluate the machine–man–environment system in an integrated and not isolated way, as is commonly done, for evaluating the sustainability performance of manufacturing practices. For this reason, in this paper, an ergonomic triad model is proposed for calculating a novel Sustainable Work Index, (SWI), made up of the factors: human work, workstation design, organizational environment and sustainable environmental conditions. The methodology consists of defining the productive time, interviewing the workers, taking anthropometric measurements, assessing the environmental conditions, obtaining the indicators for each factor, calculating the index and interpreting the results to define improvement actions. The model was applied to a manufacturing industry obtaining a regular status with an index of 63.6%. Improvement actions were implemented, and it was possible to increase the index to 73.9%, which represents a good commitment of the company towards occupational health. The development of the new triad model to calculate the SWI will allow industries to visualize indicators of the interaction of the ergonomic triad, identify its current condition and propose actions to physically, organizationally and environmentally improve human well-being and system performance.

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“…Aynı zamanda sürekli aynı işi yapmanın getirdiği tekdüzelik, motivasyon kayıpları ve bu tekdüzeliğin getirdiği hata yapma ihtimalinin düşürülmesi de yine iş değişim çizelgelerinin işletmelere ve çalışanlara yaptığı katkılar olarak değerlendirilebilir. Bir iş değişim çizelgesi stratejisinin başarılı bir çizelge olması, işlere ilişkin risklerin doğru belirlenmesine, ilgili risk maruziyeti limit değerlerinin doğru belirlenmesine ve iş değişiminin uygun planlanmasına bağlıdır [5]. Bu çalışmada termal konforun, ölçümü için literatürde en sık kullanılan WBGT (Wet Bulb Globe Temperature) indeksi ve American Conference of Governmental Industrial Hygienists-ACGIH'ın geliştirdiği limit değerleri kullanılacaktır.…”

Section: Gi̇ri̇ş (Introducti̇on)unclassified

Termal konfor ve metabolik oran eşiti faktörlerini içeren personel çizelgeleme modeli

Adem

Dağdeviren

2020

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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A mathematical model proposal was presented for the ergonomic job rotation scheduling.  The importance of thermal comfort in the work environment was pointed out.  Both metabolic ratio equal values and thermal comfort parameters were included in the proposed model. Figure A. Theproposed approachPurpose: Thermal comfort is one of the most important physical risks encountered in work systems. The applicability of the climatic precautions to be taken to provide thermal comfort for the employees in production environments may not be possible due to required quality characteristics of the products or economic reasons. In this case, protecting employees from heat stress and heat stress-related diseases is only possible with certain administrative measures. One of the quick and effective administrative measures that can be taken will be the rotation of employees among duties. The purpose of this study is to determine optimal job rotation schedules which includes thermal comfort and metabolic equivalent rates.Theory and Methods: Firstly, a mathematical model with assignment cost minimization and thermal comfort constraint was proposed. After that, the proposed model was resolved by determining an upper limit on the equivalent metabolic rate to ensure the protection of the employees in every respect. The proposed models were developed using a mixed-integer mathematical modelling approach.Results: The proposed models were solved with the help of the Game 24.9.2 package program. The job rotation schedules which include both traditional and ergonomic characteristics were obtained. Conclusion:According to the gained results, there is a trade-off between ergonomic and economic aims. The proposed model can be employed in any production environment with small changes. Exposure to extreme temperatures in production environments causes a number of negativities such as attention deficit and somnolence. For this reason, it is an important requirement including the thermal comfort parameter to job rotation schedules

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Balancing high operator's workload through a new job rotation approach: Application to an automotive assembly line

Cited by 36 publications

References 31 publications

A job rotation‐scheduling model for blue‐collar employees' hand–arm vibration levels in manufacturing firms

A job rotation‐scheduling model for blue‐collar employees' hand–arm vibration levels in manufacturing firms

Novel Ergonomic Triad Model to Calculate a Sustainable Work Index for the Manufacturing Industry

Termal konfor ve metabolik oran eşiti faktörlerini içeren personel çizelgeleme modeli

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