Subjective estimation of ergonomic conditions of working with video display units.

In a group of 49 operators entering data into video display units, the type and frequency of subjective complaints were assessed and subjective assessment of ergonomic working conditions was examined. A detailed ergonomic analysis of the equipment and workplaces was done. The results showed a high frequency of subjective complaints. Incompatibility was established between the objectively measured ergonomic features and subjective estimation of the workplaces.