ABSTRACT
The assessment of work arduousness connected with static effort is becomeingmore and more significant in the general assessment of workstations. This is due to the widespread introduction of mechanization and automation into modern industry. It has lead not only to a significant reduction in dynamic effort, but also to the appearance of static effort caused by a sedentary position at work, or by operating self-propelled tools. Such efforts create workloads stemming from both their intensity and duration. A train driver, for instance, has to keep still for long periods of time in order to concentrate on the track ahead and to check switchboard readings. Similar workloads are experienced by truck drivers, aircraft pilots, or operators of large, multipurpose machines, such as excavators, combine harvesters, or gantries.
