The following lists some possible causes of lower back discomfort amongst computer users.  Potential corrective actions to consider are also listed.

• Backrest height on chair not adjusted properly
  • Adjust backrest height so that it provides maximum support for lower back (i.e., fits curve of lower back); check backrest tilt
• Seatpan too deep so backrest is too far away to provide support for user’s back
  • Adjust backrest horizontally if possible to shorten the distance between front of seat and backrest; try a strap-on back support or a pillow to shorten the distance
• Keyboard or mouse device too far away so user leans forward
  • Bring the keyboard and/or mouse closer to the body so the user can sit comfortably and maintain contact with back support
• Poor sitting posture
  • Habit training and body awareness; sit straight in chair and avoid regularly leaning on armrest or work surface as this throws posture out of line
• Static posture and sitting for prolonged periods of time
  • Take frequent posture breaks; change posture and move around; stretch
• Feet not well supported
  • Use a footrest to help alleviate back discomfort