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Many physical changes associated with aging can affect productivity. Those that have been investigated include decreased cardiorespiratory functioning, reduced muscle strength and sensory deterioration. A decrease in cardiorespiratory functioning often leads to increased fatigue, according to a 1995 study. This can reduce productivity in older workers, who may be relegated to more physically demanding tasks if they lack technical skills for more cognitive tasks.
Deterioration of muscular strength has been implicated in the decline in productive work performance of industrial workers who must repeatedly lift heavy objects. Muscular endurance, however, has proven more difficult to assess. A 1991 study found that 80 percent of workers on disability in Holland were older than age 50, with nearly a third of cases due to musculoskeletal disorders. It is not surprising, therefore, that as workers employed for heavy physical labor get......
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