title: Preferred 11 different job rotation types in automotive company and their effects on productivity, quality and musculoskeletal disorders: comparison between subjective and actual scores by workers' age.
abstract: This study investigates workers' favoured rotation types by their age and compares means between subjective and actual scores on productivity, quality and musculoskeletal disorders (MSDs). The subjects of research were 422 assembly line units in Hyundai Motor Company. The survey of 422 units focused on the workers' preference for 11 different rotation types and subjective scores for each type's perceived benefits, both by the workers' age. Then, actual scores on production-related indices were traced over a five-year period. The results suggest that different rotation types lead to different results in productivity, product quality and MSDs. Workers tend to perceive job rotation as a helpful method to enhance satisfaction, productivity and product quality more so than the actual production data suggests. Job rotation was especially effective in preventing MSDs for workers aged under 45, while its effects were not clear for the workers aged 45 years or older. Practitioner's Summary: This research presents appropriate rotation type for different age groups. Taking workers' age into account, administrators can use the paper's outcomes to select and implement the suitable rotation type to attain specific goals such as enhancing productivity, improving product quality or reducing MSDs.
authors.affiliation: a ESH , Hyundai Motors Co. , Ulsan , South Korea.
authors.forename: In Sik
authors.initials: IS
authors.lastname: Jeon
authors.affiliation: b Department of Industrial & Management Engineering , Hansung University , Seoul , South Korea.
authors.forename: Byung Yong
authors.initials: BY
authors.lastname: Jeong
authors.affiliation: c Department of Computer Science & Engineering , Korea University , Seoul , South Korea.
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Jeong
mesh_terms: D000328:Adult; D017677:Age Distribution; D000704:Analysis of Variance; D001336:Automobiles; D004526:Efficiency; D006804:Ergonomics / Q000379:methods*; D006801:Humans; D007588:Job Satisfaction; D000072499:Manufacturing and Industrial Facilities; D008875:Middle Aged; D009140:Musculoskeletal Diseases / Q000517:prevention & control*; D009784:Occupational Diseases / Q000517:prevention & control*; D056910:Republic of Korea; D011795:Surveys and Questionnaires; D013647:Task Performance and Analysis
keywords: Autonomous job rotation; automotive industry; musculoskeletal disorders; productivity and quality; satisfaction