RULARULA vs REBA — which should you use?
Two closely related observational methods, one decision: score the upper limbs in detail, or score the whole body. Here is how they differ in practice.
RULA (Rapid Upper Limb Assessment, McAtamney & Corlett 1993) was designed for investigating work-related upper limb disorders: it looks closely at the arm, wrist, neck and trunk of a mainly stationary — often seated — worker. REBA (Rapid Entire Body Assessment, Hignett & McAtamney 2000) grew out of the same scoring approach but covers the entire body, and adds factors for the load being handled, the quality of the grip and whether the posture is static or rapidly changing.
The rule of thumb: task anchored at a bench or screen → RULA; task involving the whole body, lifting or unpredictable postures → REBA.
The differences at a glance
| RULA | REBA | |
|---|---|---|
| Published | McAtamney & Corlett, 1993 | Hignett & McAtamney, 2000 |
| Body focus | Neck, trunk and upper limbs; legs scored only as supported or not | Whole body, with fuller leg scoring (weight bearing, knee angle) |
| Final score | 1–7 | 1–15 |
| Action levels | 4 levels | 5 risk levels (negligible → very high) |
| Load / force | Force and muscle-use scores for arm/wrist and neck/trunk/legs | Load score plus a coupling score for grip quality |
| Typical tasks | Display screen work, assembly, sewing, laboratory and bench work | Patient handling, manual handling, warehousing, construction |
When RULA is the better fit
Choose RULA when the risk you are screening for sits in the neck, shoulders, arms and wrists — the classic picture for display screen users and repetitive bench or line work. Because it concentrates its scoring resolution on the upper limb, RULA discriminates between wrist and arm postures more finely than REBA, and it scores each arm separately (the online tool can score both sides in one pass).
When REBA is the better fit
Choose REBA when the whole body is doing the work: lifting, carrying, pushing, bending and kneeling, or postures that change unpredictably — it was originally developed with healthcare tasks in mind. Its coupling score also matters whenever grip quality affects the risk, which RULA does not capture.
Can you use both?
Yes — they are complementary screens, not competitors. Many assessors run RULA on the workstation tasks and REBA on the manual handling tasks within the same investigation. Both are single-posture snapshots intended as part of a broader ergonomic study, not a complete risk assessment on their own.
This site currently scores RULA — start an assessment for an instant score and action level, or read what your RULA score means. You can also download the paper worksheet.
References
McAtamney, L. and Corlett, E.N. "RULA: a survey method for the investigation of work-related upper limb disorders." Applied Ergonomics 1993, 24(2), 91–99.
Hignett, S. and McAtamney, L. "Rapid Entire Body Assessment (REBA)." Applied Ergonomics 2000, 31(2), 201–205.