Change legs often. Provide mats and floor coverings. Provide a stool. Provide opportunities to change position, move around or alternate between sitting and standing. Sitting Sitting is often better than standing but the chair should be designed correctly for the job and the person.
Poor chairs can contribute to back problems, circulation problems, and breathing problems.
The height of the chair should fit the height of the workbench and the job. The height of the work surface should fit the job and the individual worker. Fit the job to the worker Every year 600,000 American workers suffer ergonomic damage. This epidemic of injuries is preventable. As this drawing shows work can be redesigned to fit the workers.