NIOSH Lifting Equation audit — Recommended Weight Limit + Lifting Index for your worst recurring lift — telehealth / national.

Manual lifting is the single largest recognized cause of occupational low-back injury, yet the lifts that cause it are almost never measured — a worker knows a task 'feels heavy' with no number behind it, and no fix gets prioritized until an injury already happened. The Revised NIOSH Lifting Equation turns one real, recurring lift from the worker's own job into a Recommended Weight Limit and a Lifting Index that names exactly which lift is the problem and exactly what to change about it — computed from measurement, never from a max-effort lift.

Where

Telehealth / national (coached geometry-and-load audit of the worker's own recurring job task; results belong to the worker) · Open the map

Pay

$220 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash — recorded, and readable any time at vealth.net/labor/credit/(your wallet). You see which before you claim, never after.

Proof

worst recurring lift measured at origin/destination (horizontal distance, vertical height, travel distance, asymmetry angle, actual load weight, frequency/duration, coupling quality), RWL computed via the full multiplier formula, Lifting Index (load ÷ RWL) recorded, and any LI ≥ 3.0 / borderline unavoidable task / pre-screen red flag routed to occupational medicine, a clinician, or a physical therapist, with a concrete named fix recorded for any LI > 1.0

This is exactly what gets it approved. Nothing settles without it.

Level

entry

Open until

2026-12-28

Posted by

0x034F…6c89

The creator wallet. Its signature is what approves proof and settles the wage.

How this work is done

A documented method, so this packet comes out the same whoever does it.

Bring

• tape measure or laser distance meter (horizontal and vertical distances at origin and destination, inches or cm)
• hanging/luggage scale, or the load's known/labeled weight (to weigh the ACTUAL load — never the worker's own maximal lift)
• stopwatch or timer plus a tally counter (lift frequency per minute and task-duration class)
• protractor or an angle-estimation guide (asymmetry angle, degrees off the sagittal plane)
• coupling-quality checklist (handles/cutouts = good; comfortable no-handle grip = fair; awkward/slippery/no grip = poor)
• RNLE calculation worksheet or app implementing the RWL formula and the NIOSH frequency/coupling tables
• a private note for the score, referrals, named fix, and retest date

Steps

1. 1. Pre-screen first, before any measurement: ask about current back pain, radiating leg symptoms (sciatica), a recent (<3 months) back injury, or any red-flag symptom (numbness/weakness, saddle anesthesia, bowel/bladder change, unexplained weight loss with back pain). Any positive STOPs the audit and routes to a clinician, physical therapist, or occupational-medicine professional before continuing. State the frame plainly: this audits a lift the worker ALREADY performs at their normal working pace with their normal load — nobody lifts anything heavy, unfamiliar, or maximal to complete this pac
2. 2. With the worker, identify their worst recurring lift on the job — the one that feels heaviest, happens most often, or requires the most awkward reach or twist — and have them walk through it at normal pace with the normal load so the geometry can be observed and measured.
3. 3. At the ORIGIN (point of lift) and the DESTINATION (point of placement), measure: horizontal distance H (forward hand location from the midpoint between the ankles), vertical height V (hand height off the floor), the vertical travel distance D between origin and destination, and the asymmetry angle A (twist of the trunk or load away from straight ahead, in degrees).
4. 4. Weigh the actual load on a scale, or record its known/labeled weight — never ask the worker to lift near their perceived maximum to 'test' it.
5. 5. Record lift frequency (lifts per minute) and task-duration class (≤1 h, 1–2 h, 2–8 h per shift), and classify coupling quality (good handles/cutouts, fair no-handle grip, or poor/awkward/slippery) at the hand-load contact.
6. 6. Compute RWL at the origin (and at the destination if it is also a controlled placement) using RWL = LC(51 lb) × HM(10/H) × VM(1 − 0.0075|V−30|) × DM(0.82 + 4.5/D) × AM(1 − 0.0032·A) × FM (from the frequency/duration table) × CM (from the coupling/height table); use the smaller, more restrictive RWL if both origin and destination are controlled. Compute the Lifting Index LI = actual load weight ÷ RWL.
7. 7. If the job has more than one distinct recurring lift, repeat steps 3–6 for each and identify the single WORST lift — the highest LI — as the one requiring attention; this is the packet's tangible finding, not an average across tasks.
8. 8. Record the worst lift's LI and a concrete, named fix matched to whichever multiplier is most restrictive (raise the origin height toward ~30 in / 75 cm, shorten the horizontal reach, cut the vertical travel distance, reduce the asymmetry by repositioning the destination, add handles or improve grip, or split the load into two lighter lifts). Route per the decision rules and sign the record.

What counts as done

• Back-pain / radiating-symptom / recent-injury pre-screen completed BEFORE measurement, with any positive routed to a clinician or physical therapist and recorded
• All RNLE variables measured and recorded for the worker's own worst recurring lift: horizontal distance, vertical height, vertical travel distance, asymmetry angle, actual load weight (scale or known label, never a max-effort lift), lift frequency/duration class, and coupling quality
• RWL computed (LC × HM × VM × DM × AM × FM × CM) and the Lifting Index (LI = load ÷ RWL) recorded
• LI ≥ 3.0, or LI 1.0–3.0 on a task that cannot be redesigned immediately, or any pre-screen red flag, routed to occupational medicine, a clinician, or a physical therapist, with the referral recorded
• For any LI > 1.0, one concrete named fix recorded (raise the origin, cut the travel distance, reduce asymmetry, improve coupling/add handles, or split the load) plus a retest date

Proof is measured against these, not judged by taste.