Applied ergonomics
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Work is organized based in part on the perceptions, by managers and workers, of workers, their abilities and the characteristics of the work to be done. Physical tasks in factories and services have often been divided into 'light' and 'heavy', a division that often corresponds formally or informally to gender. ⋯ We did not discover any compelling reason to divide cleaning into 'light' and 'heavy' work. Task assignment by sex may appear to be a solution to excessive job demands which would be better addressed by job re-design.