In the present study we found an association of CTS with forestry work. Twenty five of 125 forestry workers had a neurological history, clinical findings, and EMG findings compatible with CTS. A high prevalence of CTS has been reported by other authors.Ahlborg and Voogt reported in their casecontrol study of CTS that heavy manual work increased the risk of CTS by a factor of two, and when combined with hand-arm vibration the risk increased by a factor of five. Exceptionally heavy manual work with simultaneous exposure to vibration could increase the risk of CTS by a factor often. Chatterjee et al examined 16 rock drillers and 15 controls and found a prevalence of possible CTS of 44% compared with 7% in the controls.