Please pay attention to the following requirements to make sure your workspace is ergonomically correct:
There is support for the low back curve of the spine. The backrest should fit snugly against your lower back. If you cannot adjust the backrest, use a small, thin, firm pillow or rolled up towel to support your lower back.
An imaginary straight vertical line can be drawn connecting the ears, shoulders, and hips of the operator in the chair.
The elbows are in the "neutral posture" (i.e., next to the torso and bent at a 90-100 degree angle).
The feet are flat on the floor or supported by a footrest so that the upper leg is parallel to the floor. Forearms should also be parallel to the floor. Adjust your chair height as needed. If you adjust your chair for your arms but your feet don't touch the floor, get a footrest.
The wrist should be straight and relaxed when using the keyboard.
The center points of the keyboard and the monitor are at the operator's midline (middle of the chest).
The head is level, the line of sight is parallel with the floor and the operator's view is to the top third of the monitor. This guideline changes with the use of bifocals.
The screen should be 18" to 30" from your eyes.
Any source document(s) and the monitor are at the same height and in the same plane (i.e., with use of a monitor-mounted document holder).
Related materials, supplies and/or equipment are clustered together within easy reach. Needed items are brought into the "immediate work area" (i.e., an 18" semicircle on the work surface directly in front of the operator).