Back pain is one of the most searched topics in the entire office furniture category, and for good reason. Forty percent of all musculoskeletal disorders reported in the workplace are related to the back, and the evidence points squarely at prolonged sitting as a primary contributor. If you spend six or more hours a day at a desk, the chair you are sitting in is one of the most important physical decisions you make about your health.
At The Good Chairs, we specialise in premium pre-owned office seating from the brands that take this seriously. This guide explains what is actually happening to your spine when you sit, what to look for in a chair, and which models we recommend for people dealing with back pain.
What happens to your spine when you sit
Understanding the problem is the fastest route to solving it. A good ergonomic chair needs to address four distinct regions of the spine: the cervical region at the neck, the thoracic region across the upper back, the lumbar region at the lower back, and the sacrum at the base of the spine where it meets the pelvis.
The lumbar region is where most people feel pain first. The lumbar spine has a natural inward curve, and sitting for long periods without support for this curve tends to lead to slouching, which flattens that curve and strains the structures in the lower spine.
Below the lumbar sits the sacrum, and this is where many chairs fail silently. Most standard office chairs completely neglect support for the sacrum, the triangular bone where the spine meets the pelvis. This oversight is a primary reason why so many chairs fail to prevent lower back pain even when they advertise lumbar support. If the sacrum is not stabilised, the pelvis tilts backward and the lumbar curve collapses regardless of what the lumbar pad is doing.
A 2023 study published in Ergonomics found that lumbar support combined with seat pan tilt resulted in significantly more neutral spine and pelvic postures among seated workers. In plain terms: the chair needs to support the foundation, not just the symptom.
What to look for in a chair for back pain
Not all ergonomic features are created equal. These are the ones that matter most for back pain specifically.
Lumbar support that is adjustable in both height and depth is essential. A fixed lumbar pad positioned for an average spine will be in the wrong place for most individual spines. Quality ergonomic chairs offer both height and depth adjustment for the lumbar, preventing disc compression during prolonged sitting while maintaining the spine's natural curve.
Sacral support is the feature most buyers overlook and most chairs do not provide. The Herman Miller Aeron's PostureFit SL system is one of the few designs that explicitly addresses both the sacrum and the lumbar simultaneously. If you have recurring lower back pain that originates at the base of the spine rather than the mid-lower back, this distinction matters more than almost any other spec.
Seat pan tilt and depth adjustment allow you to position the seat so that your hips are slightly higher than your knees and the front edge of the seat is not cutting into the backs of your thighs. Both of these reduce posterior pelvic tilt, which is the root cause of most lumbar slouching.
Dynamic backrest movement matters more than most buyers appreciate. A Herman Miller study found that seated people move their torso an average of 53 times per hour, with nearly 28 percent of those movements involving leaning or turning. A rigid backrest that cannot follow those movements forces the back muscles to compensate, which causes fatigue and eventually pain. The best chairs for back pain move with you rather than holding you still.
The chairs we recommend
Herman Miller Aeron — best for sacral and lumbar pain
The Aeron's PostureFit SL is the most clinically considered lumbar and sacral support system in a mass-produced office chair. Rather than pushing a single pad into the lower back, it supports two specific anatomical points simultaneously, establishing correct pelvic alignment as the foundation of the sitting posture. The Pellicle mesh also eliminates the pressure points that foam seats create under the thighs, which reduces the tendency to perch forward and away from the backrest. If your back pain is located at or below the belt line, the Aeron should be the first chair you try.
One important note: the Aeron comes in three sizes (A, B and C) and the wrong size will undermine everything the chair is trying to do. See our dedicated Aeron sizing guide for full guidance.
Steelcase Leap V2 — best for adjustable lumbar control
The Leap V2 is the most adjustable task chair ever made at scale. Its lumbar system includes both a height adjustment and a firmness dial, allowing you to tune the exact amount of pressure the chair applies to your lower back. For people with specific, diagnosed lumbar conditions where the right level of support needs to be dialled in precisely, this level of control is genuinely valuable. Its LiveBack technology flexes and changes shape as you move, following the natural motion of the spine rather than holding it in a fixed position. If your back pain is in the mid to upper lumbar region and you need more manual control over your support than the Aeron offers, the Leap is the better instrument.
Herman Miller Embody — best for people who move constantly
The Embody is built around a central spine with a pixelated support matrix that adapts dynamically to micro-movements. It suits people whose back pain is partly driven by tension from holding a fixed posture for long periods, rather than from a lack of support in a specific anatomical zone. The Embody also includes seat depth adjustment, which the standard Aeron does not, making it a better fit for people with longer thighs who struggle to make contact with the backrest while sitting correctly.
Steelcase Gesture — best for upper back and neck involvement
If your back pain extends into the upper back or shoulders, the Gesture deserves serious consideration. Its 360 degree armrest system supports the arms through a much wider range of positions than any competing chair, which reduces the shoulder and upper back tension that tends to travel down into the mid-back over the course of a long day. The Gesture also accommodates a very broad range of body types from a single size, making it the most practical choice for shared workstations or corporate fit-outs where multiple people will use the same chair.
Humanscale Freedom — best for passive lumbar support
The Humanscale Freedom uses a recline counterbalance mechanism that automatically adjusts recline resistance to the sitter's weight, requiring no manual setup. The integrated headrest supports the neck and upper cervical region, which matters for people whose back pain has a postural component that begins at the neck. If you want a chair that supports correct posture without requiring you to configure it, the Freedom is worth considering.
A note on pre-owned chairs and back pain
Buying a pre-owned chair from one of these brands is a sound decision for most people, with one caveat: the chair must be in good functional condition. A worn-out lumbar mechanism on an otherwise excellent chair will not do the job. When we source and verify chairs at The Good Chairs, we check every adjustment mechanism, inspect the structural components, and confirm the chair performs as it should before we make it available.
If you have a specific back condition and want a recommendation before you buy, get in touch. We would rather help you find the right chair than sell you the wrong one.
One more thing: no chair does the whole job
No matter how ergonomically supportive your chair is, prolonged static posture is not good for your back. Standing, stretching, and walking for at least a minute or two every thirty minutes remains important regardless of which chair you are sitting in. The right chair removes the acute pain caused by poor support. Regular movement addresses the underlying physiology that sitting, even in the best chair, cannot fully counteract.
The two work together. Start with the chair.