Depending on the nature of a product, a design process for an ergonomic product follows a series of simple or complex stages. This paper suggested a rather practical and simple design process consisting of eight stages, i.e. design needs assessment, ergonomic guidelines, anthropometry, brainstorming and idea sketch, preliminary model, drafting and rendering, working prototype, and user trials. The feasibility of this design process was verified by applying it to the development of a modified clamping hand tool handle. The case study showed how ergonomics played a role and how ergonomists overcame design difficulties by integrating good ergonomic design practices.