In conclusion, the findings of this study provide an insight into the different approaches that can be applied to improve the design of hand tools, with emphasis on handle shape as one of the design possibilities. The new prototype handles were designed to provide different patterns of grip so that they could be suited to the hand/tool interaction in particular hand areas. The effect of handle shape was found to be significant on the hand grip effort, usability and discomfort ratings, which is in line with several previous studies. The results also support the general conclusion that objective measurements should be supplemented by qualitative subjective assessments to provide a more holistic approach where specific and additional details about the tool design characteristics are incorporated from the workers' perspective. These findings present a unique insight into the handle design for industrial hand tool use but further research using different hand tools and tasks is required to validate the findings in other workplace settings, looking at wider factors and local work practices. However, the findings of the present study represent a key stage in verifying which designs show particular advantages in the use of hand tools which then provides a basis for further research in specific workplaces.