The health and safety guidelines in relation to using keyboards are; Place the monitor in front of you at a comfortable viewing distance. Placing the top of the monitor eye level when sitting down will help. Make sure there is enough space to move your mouse and to rest your wrists in front of the keyboard when your not typing. If your feet don't reach the floor when your sitting in a good position, try a foot rest or lower/higher the chair if possible.
The purpose for following the occupational health and safety guidelines for using keyboards is so that you don't damage or strain any bones or muscles in your back and arms, making everything more relaxing. This could have very long term severe causes on your body.
The correct positions for your fingers, wrists, forearms and back are as follows. You should position your fingers so that they are rested over the middle row of keys with the letters G and H being the only middle letter not covered. Make sure you aren't sat with your back arched. If your keyboard is lower than the desk surface, tilt the back edge of the keyboard slightly down. You must ensure that the height of your keyboard allows you to keep an “open angle” with your arms. Keep your upper body relaxed and don't over stretch your wrists and fingers. Your forearms should be roughly horizontal and your eyebrows level with the keyboard or mouse.
The procedures for workstation care and maintenance include making sure there is no trip hazards e.g. portable radiator wires, phone wires and computer cables. This also would include making sure that the wires aren't tangled or aren't spread all over your desk. Making sure that the desk is tidy and clean, making sure that everything has been put back to how it was before e.g. no litter, no pieces of paper laying on the table and just general tidiness.
I found out this