REBA Assessment: How to Score Whole-Body Postures Step by Step

What is a REBA assessment?

A REBA assessment is an observational method that turns one working posture into a single number from 1 to 15, so you can see how urgently that posture needs attention. REBA stands for Rapid Entire Body Assessment, and you will also see it called a REBA ergonomic assessment.

It was published by Sue Hignett and Lynn McAtamney in Applied Ergonomics in 2000. They designed it as a practitioner's field tool for the unpredictable postures common in health care and other service industries. A team of ergonomists, physiotherapists, occupational therapists and nurses coded more than 600 postural examples to build it.

What sets REBA apart from older posture tools is that it scores the whole body, including the legs, and adds factors for load, hand coupling and dynamic activity. If you want to follow along with real numbers, open the free REBA score calculator in another tab while you read.

This article is general information, not medical advice. If a worker has persistent pain, they should see a clinician.

When should you use a REBA assessment instead of another tool?

REBA fits best when the whole body is involved and postures change a lot. Think patient handling, stocking shelves, cleaning, kitting, or loading a machine from the floor.

It is less suited to seated, hand-intensive work where most of the load sits in the arms and wrists. For that, RULA is usually the better choice. If you are deciding between the two, our RULA vs REBA comparison walks through the differences.

REBA also does not give you a safe lifting weight. For two-handed lifting, pair it with the NIOSH lifting equation.

How do you prepare for a REBA assessment?

Good scores start with good observation. Before you pick up the REBA worksheet:

• Watch several work cycles. Note which postures are held longest, repeated most, or involve the most load.
• Pick the posture to score. Hignett and McAtamney's method targets the most common, most prolonged, or most loaded posture. Score more than one if the task has several risky moments.
• Record video or photos. Freezing the frame makes angle estimates much more consistent.
• Choose a side. Group B (arms and wrists) is scored one side at a time, usually the side under greater load.

How do you do a REBA assessment, step by step?

A REBA assessment builds the final score in three stages. First, REBA splits the body into two groups. Group A covers the trunk, neck and legs. Group B covers the upper arms, lower arms and wrists. Each group gets a posture score from a lookup table, then you add modifiers and combine them in a third table.

The scoring rules below follow the original method as reproduced by Cornell University and the Ergonomics Plus worksheet.

Group A: trunk, neck and legs

Trunk

Trunk position	Score
Upright	1
0-20° flexion or 0-20° extension	2
20-60° flexion, or more than 20° extension	3
More than 60° flexion	4

Add +1 if the trunk is twisted or side bending.

Neck

Neck position	Score
0-20° flexion	1
More than 20° flexion, or in extension	2

Add +1 if the neck is twisted or side bending.

Legs

Leg position	Score
Bilateral weight bearing, walking or sitting	1
Unilateral weight bearing, featherweight bearing or an unstable posture	2

Add +1 if the knees are flexed 30-60°. Add +2 if the knees are flexed more than 60° (not applied when sitting).

Look up the trunk, neck and leg scores in Table A, then add the load/force score:

Load or force	Score
Under 5 kg (11 lb)	0
5-10 kg (11-22 lb)	1
Over 10 kg (22 lb)	2

Add +1 if there is shock or a rapid build-up of force. Table A plus load gives Score A.

Group B: upper arms, lower arms and wrists

Upper arm

Upper arm position	Score
20° extension to 20° flexion	1
More than 20° extension, or 20-45° flexion	2
45-90° flexion	3
More than 90° flexion	4

Adjust: +1 if the arm is abducted or rotated, +1 if the shoulder is raised, and -1 if the arm is supported, the person is leaning, or the posture is gravity assisted.

Lower arm

Lower arm position	Score
60-100° flexion	1
Less than 60° or more than 100° flexion	2

Wrist

Wrist position	Score
0-15° flexion or extension	1
More than 15° flexion or extension	2

Add +1 if the wrist is deviated or twisted.

Look up the three Group B scores in Table B, then add the coupling score:

Coupling	Description	Score
Good	Well-fitting handle and a mid-range power grip	0
Fair	Hand hold acceptable but not ideal, or coupling acceptable via another body part	1
Poor	Hand hold not acceptable although possible	2
Unacceptable	Awkward, unsafe grip, no handles; unacceptable with any body part	3

Table B plus coupling gives Score B.

Table C and the activity score

Find Score A (row) and Score B (column) in Table C to get Score C. Then add the activity score, +1 for each that applies:

• One or more body parts are static, for example held for longer than 1 minute.
• Repeated small-range actions, for example repeated more than 4 times per minute (walking excluded).
• The action causes rapid large-range changes in posture or an unstable base.

Score C plus activity is the final REBA score.

What does your REBA score mean?

The original paper groups final scores into five action levels. The table follows the Cornell reproduction of Hignett and McAtamney, and the same bands appear in Micheletti Cremasco et al. (2019).

REBA score	Action level	Risk level	Action (including further assessment)
1	0	Negligible	None necessary
2-3	1	Low	May be necessary
4-7	2	Medium	Necessary
8-10	3	High	Necessary soon
11-15	4	Very high	Necessary now

Treat the bands as a priority list, not a pass/fail line. A score of 4 does not mean a job is dangerous, and a 3 does not mean it is safe. It means the 4 should be investigated before the 3.

What does a worked REBA assessment look like?

Take a warehouse picker pulling 7 kg cartons from a low shelf, about six picks per minute. From a paused video frame you estimate:

Group A

• Trunk flexed about 40°: 3 (no twist)
• Neck flexed about 25°: 2
• Both feet on the floor with knees bent about 40°: 1 + 1 = 2
• Table A (trunk 3, neck 2, legs 2) = 5
• Load 7 kg: +1, so Score A = 6

Group B (right side, the reaching arm)

• Upper arm flexed about 60°: 3
• Elbow fairly straight, under 60° flexion: 2
• Wrist extended about 20°: 2
• Table B (upper arm 3, lower arm 2, wrist 2) = 5
• Carton has cut-out handles that are not ideal: coupling +1, so Score B = 6

Final

• Table C (Score A 6, Score B 6) = 8
• Repeated action more than 4 times per minute: +1
• REBA score = 9: high risk, action necessary soon

The breakdown shows where to act. Raising the pick zone would cut the trunk, neck and knee scores at once, which usually moves the result more than any single change to the arms.

What are the limits of REBA?

REBA is quick and widely used, but it has known weaknesses:

• It scores a moment, not a shift. It does not account for total exposure time, recovery breaks, vibration, or psychosocial factors. Kee (2022) lists these as gaps shared by REBA, RULA and OWAS.
• Raters disagree. In Kee's review, reported inter-rater reliability for REBA ranged from poor to moderate in several studies, and was lower on average than for the OWAS method and RULA. Angles near a band boundary are the usual cause.
• The original authors called it preliminary. The 2000 technical note says initial inter-observer reliability "shows promise" but that more work was needed to establish validity.

You can reduce rater variation by scoring from paused video, agreeing on which frame to use, and having a second person check borderline angles.

Can REBA be done from video or with AI?

Yes, and this is where the work is heading. Estimating angles from a paused frame is easier than doing it live, and pose-estimation software can now estimate joint angles automatically.

ViveLab's AI posture analysis tool does this in the browser: you upload a phone video or photo, pose detection runs on your device so the media never leaves it, and you get an estimated REBA score with a printable report. Treat that output as an AI-assisted estimate. A trained assessor should still review the frame choice, the load, coupling and activity inputs, and any borderline angles before the score drives a decision. For more on how far these estimates can be trusted, see our post on video-based assessment accuracy.

Next steps

1. Pick one task that generates complaints or uses awkward whole-body postures.
2. Film a few cycles and score the worst posture with the online REBA calculator, which follows the same worksheet steps.
3. Use the body-part breakdown to choose a fix, then repeat the REBA assessment after the change to show the improvement.

New to the process? Start with what an ergonomic assessment covers. If you are building a broader program, our overview of ergonomic assessment tools and methods shows where REBA fits alongside RULA, NIOSH, OWAS and the Strain Index. For the arms-and-wrists counterpart, see the RULA assessment guide.