Chair Back Height: Does Your Chair Need a Headrest?

Back height basics: what the backrest should do

Your chair's backrest is not a passive surface. It should conform to the natural curve of your spine, especially the lumbar area. OSHA's computer workstation guidance says that the backrest should provide adequate lumbar support and help you maintain the natural S-shape of your spine. A backrest that is too low or too flat will not support the lower back, and you'll compensate by slouching or leaning forward.

A good backrest also lets you recline. OSHA recommends that the backrest be adjustable and allow you to recline at least 15 degrees from vertical, with a lock or tension adjustment. That recline shifts your weight and reduces pressure on your spine, but it also changes the angle between your torso and neck. That's where a headrest comes in.

• Look for a backrest with height-adjustable lumbar support.
• Check that the recline range is enough for your work style.
• Ensure the backrest is wide enough for your shoulders and tall enough to support your upper back.

What a headrest actually does

A headrest supports your neck and head when you recline. When the backrest angles backward, your head naturally wants to tilt back as well. Without a headrest, your neck muscles must constantly work to hold your head up. A well-positioned headrest lets those muscles relax, which can reduce neck fatigue during long sessions.

Ergonomic chairs like the Herman Miller Aeron and Steelcase Leap are designed around spinal support. Both manufacturers emphasize natural movement and spinal alignment. Steelcase even offers a version of the Leap with a headrest, acknowledging that some users need that extra support when reclining. The key is that a headrest only helps if it is positioned behind your head, not in front of it, and if it allows your head to stay in a neutral position.

If you work upright with your back vertical, a headrest is often unnecessary. It can actually interfere by pushing your head forward, which creates a forward head posture. That is an awkward posture, which NIOSH identifies as a risk factor for work-related musculoskeletal disorders. The same applies to a backrest that is too tall: it can block shoulder movement, so match the backrest height to your torso length.

When a headrest is worth buying

You should consider a headrest if you spend time reclined while reading, thinking, or using a phone. It is also useful for short breaks when you lean back to rest your eyes. Without a headrest, the gap between your head and the backrest forces your neck to support the weight of your head for minutes at a time.

Tall users often benefit from a headrest because their backrest may end at the shoulder blades. Similarly, people who have long sessions in a gaming chair or a big and tall chair may need the extra support. If you are on the heavier end of the weight spectrum, ensure the headrest is adjustable in height and angle so it actually reaches your neck, not your shoulders.

Look at your typical posture: if you recline more than 15 degrees, which is the OSHA-recommended minimum recline, a headrest becomes more important. At deeper recline angles, your head will tilt back and a fixed headrest can be too high. An adjustable headrest lets you place it right behind the base of your skull.

When you can skip the headrest

If you keep your chair mostly upright and your work requires you to lean toward the monitor, a headrest will be in the way. Many office workers sit forward and never touch the backrest, let alone the headrest. For them, the headrest is an extra component that complicates the chair's silhouette and can limit how close you can sit to your desk.

Another case to skip the headrest is when the headrest is not adjustable. A fixed headrest that does not line up with your neck can force your head forward or backward, creating strain. OSHA emphasizes that the backrest should support the natural curve of the spine, and a poorly placed headrest can disrupt that alignment. If you cannot adjust the height and depth of the headrest, it is safer to choose a chair without one.

Finally, if you prefer a chair that you can rock or tilt dynamically, a headrest can interfere with the range of motion. The headrest may push your head forward as you move, which is uncomfortable. In that case, a backrest that is tall enough to reach the base of your skull, like some mesh chairs with high backs, may be a better choice.

Backrest height and adjustability features to look for

The backrest should be adjustable in height, or at least be tall enough for you. A backrest that ends just below your shoulder blades is ideal for most people, because it supports the thoracic spine without pressing on your shoulders. If the backrest is too low, you lose support when you recline; too high and it can interfere with shoulder movement.

OSHA notes that the backrest should be easily adjustable to support the back in a variety of seated postures. That includes forward and backward movement, which allows shorter users to sit with their back against the backrest without the seat edge hitting their knees. Look for a chair with independent lumbar height adjustment and a recline tension knob. For specific guidance, see our chair backrest height adjustment and chair back support lower articles.

If you are considering a headrest, check whether it can be raised and lowered, and whether it tilts forward and backward. Some headrests are removable, which gives you the option to remove it when you do not need it. That is a flexible choice if your work habits change. The chair headrest adjustability article explains what to look for.

What to pick for your use

Questions

How tall should a chair backrest be?

A backrest should be tall enough to support your spine up to at least the upper back, ideally ending just below the shoulder blades. This provides lumbar and thoracic support without restricting shoulder movement. OSHA recommends a backrest that conforms to the natural curvature of your spine and provides adjustable lumbar support.

Is a headrest necessary for an ergonomic chair?

No. A headrest is only necessary if you recline frequently or experience neck strain. Many ergonomic chairs, like the Herman Miller Aeron, are designed without a headrest and still support spinal alignment. Only add a headrest if it can be positioned behind your neck without pushing your head forward.

Can a headrest make neck pain worse?

Yes, if it is not adjustable or is positioned incorrectly. A headrest that sits too low or too far forward can force your head into an awkward posture, which is a risk factor for musculoskeletal disorders according to NIOSH. Make sure the headrest supports the base of your skull and allows a slight recline of your neck.

What is the minimum recline angle for a chair?

OSHA recommends that an adjustable backrest allow recline of at least 15 degrees from vertical, with a lock or tension adjustment. At this angle, a headrest becomes more useful because it supports the head during the recline. Deeper recline angles increase the need for a headrest.

Should I choose a chair with a removable headrest?

A removable headrest is a flexible option if your posture varies. You can use it when you recline and remove it when you sit upright. Look for a design that allows tool-free removal, as covered in our chair headrest removable article.