RULAWhat is a good RULA score?
The short answer: 1 or 2. A RULA grand score runs from 1 to 7, and lower is always better — anything above 2 is the method telling you to look closer.
The four action levels
- Score 1–2 · Action level 1 — acceptable. The posture is acceptable if it is not maintained or repeated for long periods. This is the "good" band; scores of 1 are rare in real work and usually mean a well-supported, neutral posture.
- Score 3–4 · Action level 2 — investigate further. Not an emergency, but the posture is loading the body enough that changes may be required. Most everyday desk setups that "feel a bit awkward" land here.
- Score 5–6 · Action level 3 — investigate and change soon. The combination of posture, muscle use and force is likely to be contributing to discomfort or injury risk; plan changes rather than waiting for symptoms.
- Score 7 · Action level 4 — investigate and change immediately. The highest loading the method can express. Do not leave the task as it is.
Where the number comes from
The grand score is not an average — it is built from two halves. Part A scores the arm and wrist (upper arm, lower arm, wrist position and twist via Table A), Part B scores the neck, trunk and legs (Table B). Each half then adds a muscle-use score (+1 for static postures held over a minute, or action repeated more than four times a minute) and a force/load score (0–3). The two totals meet in Table C to give the final 1–7. Because the tables saturate, a very bad single element — say, a wrist bent at end of range under load — can dominate an otherwise reasonable posture.
Why is my score high?
The usual suspects, roughly in order of how often they appear in assessments:
- Static muscle use — a posture held longer than a minute (screen work is static by nature) adds +1 to both halves.
- Working above shoulder height or with raised shoulders — upper arm scores climb steeply past 45° of flexion.
- Wrist deviation and twist — bending the wrist away from neutral, or twisting near end of range.
- Neck and trunk flexion — leaning into the screen or over a bench, worse if twisted or side-bent.
- Unsupported legs — feet not firmly supported and balanced.
- Force — anything from 2 kg upwards, especially static or repeated.
How to bring a score down
Work through the same elements in reverse: support the forearms and get the upper arms hanging relaxed; bring work between elbow and shoulder height and close to the body; keep wrists neutral (straight and mid-twist); raise the screen or lower the bench so the neck stays upright; give the feet stable support; reduce or share the load; and break up static postures — the +1 muscle-use scores disappear when the posture varies. Re-run the assessment after each change: because of the table structure, one fix can drop the grand score by more than one point.
A caution on chasing the number
RULA scores a snapshot of one posture as part of a rapid screening process. A "good" score for one moment does not certify a whole job, and the method is intended to be used within a broader ergonomic study — refer to McAtamney, L. and Corlett, E.N., Applied Ergonomics 1993, 24(2), 91–99 for the correct use of the scores.
Get your own number in a few minutes with the free online RULA assessment, score by hand with the printable worksheet, or compare methods in RULA vs REBA.