Monitors, Peripherals, and Ergonomic Setup

Incorrect monitor positioning is one of the leading causes of eye strain, headaches, and neck and shoulder pain in office workers. Proper setup takes five minutes and prevents cumulative injury:

• Monitor height — the top of the monitor should be at or slightly below eye level when you are sitting in your normal working posture. If the monitor is too low, you tilt your head down and strain the back of your neck. If it is too high, you tilt your head back and strain the front of the neck and upper back. Adjust using the monitor's height adjustment stand, or place the monitor on a riser or monitor arm.
• Monitor distance — your eyes should be approximately 20–28 inches from the screen (roughly arm's length). Too close increases eye fatigue; too far causes squinting and leaning forward. If you find yourself leaning toward the screen to read, increase the font size or zoom level in your application rather than moving closer.
• Monitor tilt — the monitor should be tilted slightly back (5–15 degrees) so the screen faces your eyes naturally without requiring you to tilt your head. Most monitors have a tilt adjustment on the base stand.
• Dual monitor setup — if you use two monitors, position the primary monitor directly in front of you and the secondary monitor to the side. If you use both equally, position them symmetrically with a slight inward angle. Avoid twisting to view the secondary monitor for extended periods — this causes neck strain. Use Alt+Tab to move between applications rather than constantly turning your neck to look at the secondary screen.

Keyboard and mouse positioning affects your wrists, forearms, and shoulders — three common sites of repetitive strain injury in office workers:

• Keyboard height — your elbows should be at approximately 90 degrees (or slightly more open — 100–110 degrees) when your hands rest on the keyboard in a natural typing position. Your wrists should be straight or very slightly inclined — never bent upward (extended) or downward (flexed). If your keyboard is on a standard desk and your chair is at the correct height, your wrists may be in an unnatural position — a keyboard tray that drops the keyboard below desk level corrects this.
• Mouse position — the mouse should be at the same height as the keyboard and as close to the keyboard as possible so you do not have to reach for it. A mouse positioned too far to the side causes shoulder strain from holding the arm out. Consider a compact keyboard (without a numeric keypad) if the full-size keyboard pushes the mouse too far to the right.
• Wrist position while typing — keep your wrists hovering slightly above the keyboard surface while actively typing, not resting on the desk or a wrist pad. Rest on the wrist pad only during pauses. Resting on the pad while typing bends the wrist and compresses the carpal tunnel.
• Touchpad vs. mouse — laptop touchpads are convenient but not ergonomic for extended office use. A separate external mouse with natural grip reduces strain for staff who do significant mouse work. Consider a vertical mouse (angled to keep the forearm in a more neutral rotation) if you experience forearm fatigue or pain.

The correct chair setup supports productive posture throughout an 8-hour shift — incorrect chair height is at the root of most workstation discomfort complaints:

• Seat height — adjust the seat height so your feet rest flat on the floor (or on a footrest) with your knees at approximately 90 degrees. If you raise the seat high enough for good keyboard height but your feet dangle, add a footrest. Do not slouch forward or backwards — sit with your back against the chair back.
• Lumbar support — the chair's lumbar support should press against your lower back at approximately the level of your belt. Lumbar support that is too high pushes the upper back forward; too low provides no benefit. If your chair has an adjustable lumbar, position it to feel supported when sitting back naturally.
• Break schedule — no matter how well your workstation is set up, sitting in any position for hours without movement causes discomfort. Take a 2-minute break every 30–60 minutes: stand up, walk a few steps, and stretch your neck and wrists. Standing desks and sit-stand converters allow alternating between sitting and standing throughout the day.