11. Arm rest height adjustment
- Some chairs do not have height adjustable arm rests, and if they do, the arm rests rarely lower enough.
- If the arm rests do not lower, or do not lower enough, the arm rests block the employee from pulling their chair all the way into the desk when using a keyboard tray. As a result, the employees sit forward in their chair in a “perched” position and do not use their back rest for support.
- Additionally if the arm rests do not lower enough, the employee tends to rest their elbows/forearms on the arm rests too frequently. Pressure placed on the forearm and elbow can result in compression discomfort and possibly injury.
- The arm rests must lower to at least 5” above the seat pan.
12. Arm rest width adjustment
- Many chairs do not have width adjustable arm rests.
- If the arm rests do not widen enough, the employee tends to rest their elbows/forearms on the arm rests too frequently (see above)
- The arm rests must widen up to 2” out from the seat pan.