[Does physical exercise at the workplace have any effect on sick leave?]

The objective of the study was to ascertain whether physical activity at the workplace reduces the amount of sick leave. The databases Medline and Spri-line, reference lists, and professional expertise were consulted for information on the subject. We included random controlled trials, and controlled trials studying the effect on sick leave of physical activity at the worksite. Four trials were identified, including one carried out in Norway. The small number of trials limits the value of any conclusions and highlights the need for more research. The results of the four trials do not indicate that physical activity at the workplace reduces sick leave.