What Makes a Good Office Chair: Key Features to Look For?

Adjustability separates a good office chair from a bad one: seat height, depth, and armrests must move to fit your body, because a chair that only looks supportive can’t fix posture it wasn’t built to hold.

A chair that fits at 9 a.m. can hurt by 3 p.m., and the culprit is rarely the cushion — it’s a fixed seat pan, armrests pinning your shoulders up, or a lumbar pad where your back doesn’t curve. OSHA breaks a workstation chair into four parts: backrest, seat, armrests, base. What makes a good office chair is whether each adjusts to your measurements and desk, not whether it photographs well.

Which Adjustments Actually Matter?

Seat height and depth do the heavy lifting, with lumbar support and armrest adjustment close behind; the rest are bonuses.

What The Numbers Look Like

OSHA’s checklist puts hard figures on specs usually described in vague marketing language. Measure before you buy.

How Do You Set The Chair Up Once It Arrives?

Adjustments are only as good as the setup. Follow this order, then check posture against OSHA’s neutral-position targets.

1. Sit all the way back so lumbar support contacts your lower back.
2. Set seat height so both feet rest fully on the floor. If a fixed desk is too high, use a footrest.
3. Adjust seat depth so thighs are supported without the front edge pressing behind the knees.
4. Raise or deepen the lumbar pad until it fills the curve of your lower back.
5. Set armrests so shoulders stay relaxed, elbows sit near the torso, forearms supported.
6. Set backrest upright to slightly reclined; engage the recline lock for fixed-position work.
7. Position monitor directly ahead at a straight-ahead gaze, keyboard and mouse within easy reach.
8. Check the result: wrists straight and level, head balanced over torso, elbows at roughly 90–120 degrees, thighs supported, hips and knees roughly level.

OSHA states plainly that holding one posture for prolonged periods isn’t healthy and recommends small chair or backrest changes throughout the day.

What Do Buyers Get Wrong?

Most bad purchases come from shopping the cushion and color, then skipping measurements.

• Fixed armrests that force shoulders upward or block the chair from sliding under the desk — look for height-adjustable or removable armrests.
• A back that only tilts forward and backward, which OSHA warns may not deliver adequate seat-depth adjustment for many users.
• Ignoring the floor. Carpet casters drag or skid on hardwood; match the wheel to your surface.
• Skipping the weight rating.
• Assuming a headrest is required. OSHA recommends one mainly when recline exceeds roughly 30 degrees from vertical.
• Treating the chair as the whole fix. Monitor, keyboard, and desk height work with the chair to hold neutral posture.

If you’d rather start from a vetted group than a spec sheet, this roundup of tested work office chairs shortens the list. Standards help you judge fit: ANSI/BIFMA X5.1-2017(R2022) covers durability testing for general-purpose seating, and BIFMA X10.1-2024 sets dimensional ergonomics for computer-use furniture. Both are references, not fit guarantees — try a chair for an extended period before committing. Verify which standard applies, because BIFMA notes X5.1 may not cover sit-stand or motion-seating designs. OSHA’s chair component guidance spells out the fit criteria above.