The guidelines for working surface height for delicate work and for work that involves much effort differ from
those for manual work, which were evaluated in this paper. According to Grandjean (1980), the height
should be 5-10 cm above elbow height for delicate work, in which case the working surface will be
positioned well above the enlarged abdomen. For work that involves much physical effort, the height should be
15-40 cm under elbow height, resulting in a surface in the lower region of the abdomen or below the
abdomen. Thus for these kinds of work few difficulties of fit are expected. For delicate work this only holds
true when there is free space under the table for the
abdomen and when the table top is thin.