Setting Up a Desk for Ergonomics: Screen Height, Chair and Movement

Most office injuries and discomfort are not caused by a single dramatic moment. They build up over weeks of working in a set-up that does not suit the body. A desk that is slightly too high, a chair that pushes the lower back forward, or a screen placed off to one side can all add strain. Ergonomics is the practice of fitting the workspace to the person, and the good news is that most adjustments cost little and take only a few minutes.

Screen height and viewing distance

The top of the screen should sit at or just below eye level, so the neck stays in a fairly neutral position rather than tipping forward or back. Many people work with the monitor too low, usually because they are looking at a laptop screen that sits flat on the desk. If the screen is low, raise it on a stand, a stack of sturdy books or a monitor arm. A separate keyboard and mouse then allow the screen to move up without forcing the arms into an awkward angle.

Distance matters too. A screen that is too close makes the eyes and neck work harder, while one placed far away can encourage leaning forward. Sitting at roughly arm’s length from the screen is a common starting point, but the right distance depends on text size and vision, so it is worth adjusting until text is comfortable to read without squinting.

Choosing and setting up the chair

A supportive chair should allow the feet to rest flat on the floor, or on a footrest if the desk is high. The seat depth should leave a small gap between the back of the knees and the edge of the seat, so the thighs are not pressed against it. Backrest support should reach the lower back, and the armrests, if present, should let the shoulders relax rather than lift. If a chair has adjustable height, backrest tilt and lumbar support, spend a few minutes setting each one, because the default position is rarely the best.

Where a chair cannot be adjusted properly, a cushion or a small rolled towel behind the lower back can help. These are stopgaps, not replacements, and a chair that is worn out or the wrong size for the user is better replaced than patched.

Keyboard, mouse and the reach zone

Keep the keyboard and mouse close enough that the elbows stay near the sides and the forearms can rest at a comfortable angle. Reaching forward for the mouse over long periods often leads to shoulder tension. Wrist rests can be useful for resting between bursts of typing, but they should not be used as a pivot point while typing. Frequently used items, such as a notebook or phone, belong within easy reach so the body does not twist repeatedly to get them.

When to move, not just when to adjust

Even a perfectly set-up workstation becomes uncomfortable if it is held in one position for hours. Changing posture is one of the simplest ways to reduce stiffness. Standing for part of the day, walking to a printer or a colleague, and shifting weight or adjusting the seat from time to time all help. Many people find that short, regular breaks work better than a long break once a day, because they interrupt static posture before discomfort sets in.

Pain that persists, spreads, or wakes a person at night is a reason to talk to a doctor or a qualified physiotherapist rather than keep adjusting equipment alone. Ergonomic changes can reduce strain, but they are not a substitute for assessment when symptoms are ongoing.

A simple checklist for the workday

Start by checking the screen height, then the chair, then the reach to the keyboard and mouse. Make a note of how the body feels after an hour, and adjust one thing at a time. Ask an employer about a workstation assessment if the role involves long hours at a screen, and keep any equipment requests in writing so they can be followed up.

This article is general information rather than medical or legal advice, so anyone with ongoing pain or a condition affecting movement should speak to a qualified health professional before making changes.