Assess the Backrest at Its Existing Height
The first fitting question for headrest office chairs without adjustable back height concerns the contact available without vertical repositioning. Ask the user to sit naturally against the backrest and carry out a familiar desk task. Observe where the backrest meets their torso and whether they move forward or alter their posture to accommodate it. Confirm dimensions where available, but use them alongside practical observations. The absence of height adjustment does not establish the backrest's shape or its suitability for a particular individual. Keep the trial focused on the relationship that is actually achieved at the workstation being assessed.
Examine the Headrest Without Assuming Movement
Check the headrest's position from the user's established seated posture. Ask when they expect to contact it and assess those positions directly. If a separate headrest adjustment is confirmed, demonstrate it and note its effect. If none has been established, do not include it in setup guidance. Office chairs with a headrest still require individual assessment of that contact point. A user who changes their posture simply to meet or avoid the headrest is providing relevant feedback. Record the observation clearly, together with the task and backrest contact, rather than describing the feature as suitable on presence alone.

