Long-term sickness absence due to back disorders in crane operators exposed to whole-body vibration.

In a retrospective (10-year) follow-up study, the incidence of at least one spell of sickness absenteeism of 28 d or longer in crane operators exposed to whole-body vibration and a control group was investigated. In contrast to a previous study on permanent work disability in the same groups, no difference was observed in long-term sickness absenteeism because of lumbar disorders. Spells of sickness absence due to intervertebral disc disorders did last longer in the index group and also more disability pensions with this diagnosis were recorded in the index group. This indicates that these disorders particularly interfere with the work of a crane operator. Exposure to whole-body vibration and strained posture are considered to be responsible for this situation.