How a permanent partial disability award is built
Workers' compensation is a no-fault bargain. The worker gives up the right to sue the employer in tort — and with it any recovery for pain and suffering — in exchange for benefits paid without proving negligence. Because the system removed the jury, it had to replace the jury's judgement with a formula, and that formula is the schedule.
A schedule of members assigns a fixed number of weeks of benefit to the total loss of each body part. The federal Longshore Act, at 33 U.S.C. §908(c), assigns 312 weeks to an arm, 288 to a leg, 244 to a hand, 205 to a foot, 160 to an eye and 75 to a thumb. Every state has its own version of that list, and the numbers vary widely between them for the same body part.
The award has three factors. First, the compensation rate: your average weekly wage multiplied by the statutory fraction, which is two thirds in most jurisdictions, then capped at a state maximum and floored at a state minimum. Second, the scheduled weeks for the injured member. Third, the impairment rating — a physician's assessment, at maximum medical improvement, of the percentage loss of use of that member, usually made against whichever edition of the AMA Guides to the Evaluation of Permanent Impairment the state has adopted.
Multiply the three and you have the award. What makes this different from a personal injury claim is what is absent: no pain and suffering, no fault reduction, no jury. A worker who caused their own injury through carelessness recovers the same scheduled amount as one who did not.
The formula and the two caps that bend it
The award is A = W × p × R. The interesting behaviour is all in R.
The maximum makes the award flat above a wage threshold. If the state caps the weekly rate at $1,250 and pays two thirds of wages, then every worker earning more than 1,250 ÷ (2/3) = $1,875 a week receives the same weekly benefit. Two workers with the same 25% arm rating, one earning $2,000 a week and one earning $5,000, receive an identical $97,500. This is the single largest source of surprise for higher earners, and it is why the compensation bargain is much less favourable at the top of the wage scale.
The minimum is capped at the actual wage. A worker earning $140 a week in a state with a $150 floor does not receive $150, because the floor cannot pay more than the wage it replaces. This calculator applies min(floor, wage) rather than the floor alone.
The value of each rating point output makes the leverage of the medical opinion explicit. On a 312-week arm at a $600 rate, one percentage point of impairment is 312 × 0.01 × 600 = $1,872. That is why disputed ratings are the central battleground in these cases: a second opinion moving a rating from 15% to 22% is worth $13,104 on those numbers, and it turns on a goniometer reading and an interpretation of a table in the Guides.
The last variable is what happens to temporary benefits already paid. In most jurisdictions temporary total disability, paid while you were off work healing, is a separate benefit and the scheduled award is paid on top of it. A minority credit the temporary payments against the permanent award. The selector above handles both; check the statute, because the difference here is the whole of the temporary benefit.
Worked example: a 25% arm rating on a $900 weekly wage
A worker earning $900 a week suffers a crush injury and, at maximum medical improvement, is rated at 25% loss of use of the right arm. The state pays two thirds of wages, caps the weekly rate at $1,250, and treats the schedule as 312 weeks for an arm. Twenty weeks of temporary total disability have already been paid.
- Compensation rate. 900 × 2/3 = $600.00. That is below the $1,250 cap and above the $150 floor, so it stands.
- Weeks awarded. 312 × 0.25 = 78 weeks.
- Scheduled award. 78 × 600 = $46,800.
- Value per rating point. 312 × 0.01 × 600 = $1,872 for each percentage point.
- Temporary benefits. 20 weeks × 600 = $12,000 already paid. Where the state pays the schedule in addition, total indemnity is 12,000 + 46,800 = $58,800. Where it credits, the permanent award falls to 46,800 − 12,000 = $34,800 and the total stays at $46,800.
Now change one input. Raise the wage to $3,000 a week: two thirds is $2,000, which exceeds the $1,250 cap, so the rate becomes $1,250 and the award becomes 78 × 1,250 = $97,500. Raising the wage from $1,875 to $3,000 — a 60% increase — adds nothing at all, because the rate was already at the cap at $1,875.
How to read the result, and what it leaves out
The scheduled award is a floor for settlement discussions, not a ceiling and not the whole claim. Several other benefits sit alongside it and are not in this arithmetic.
Medical benefits are separate and often larger than the indemnity. In most states they are open-ended for as long as treatment is reasonable and necessary, and closing future medical care is usually the most valuable thing a claimant gives up in a full-and-final settlement.
Unscheduled injuries — the back, the neck, the shoulder in some states, and any injury affecting the body as a whole — do not use this formula. They are compensated as a whole-person impairment or by a wage-loss method that looks at actual earnings after the injury, which produces very different numbers and much more litigation.
Permanent total disability is a different category with its own duration, often lifetime or until retirement age. Vocational rehabilitation, where the state provides it, is a separate entitlement. And where a third party caused the injury, a tort claim against them survives, subject to the compensation carrier's right to be repaid out of it — which is a lien question rather than a benefits question.
Read the value of each rating point before agreeing to any rating. It tells you what an independent medical examination is worth arguing over. If a point is worth $1,872 and the two physicians differ by seven points, the dispute is worth $13,104 and is worth the cost of a third opinion.
Federal Longshore schedule of members
| Member | Weeks for total loss | Weeks at a 25% rating |
|---|---|---|
| Arm | 312 | 78.0 |
| Leg | 288 | 72.0 |
| Hand | 244 | 61.0 |
| Foot | 205 | 51.25 |
| Eye | 160 | 40.0 |
| Hearing, both ears | 200 | 50.0 |
| Hearing, one ear | 52 | 13.0 |
| Thumb | 75 | 18.75 |
| First finger | 46 | 11.5 |
| Second finger | 30 | 7.5 |
| Third finger | 25 | 6.25 |
| Fourth finger | 15 | 3.75 |
| Great toe | 38 | 9.5 |
| Other toe | 16 | 4.0 |
The third column is the second multiplied by 0.25. Multiply it by your weekly compensation rate to get the award. Use your own state's schedule where the claim is a state claim.
Mistakes that produce the wrong award
- Using take-home pay as the average weekly wage. The AWW is computed from gross earnings under a statutory method, and in many states it includes overtime, bonuses, tips and the value of board or lodging.
- Using the current year's maximum for an older injury. The rate is fixed by the maximum in force on the date of injury, not the date of settlement, and those tables change annually.
- Rating the wrong member. An injury at the wrist may be rated as a hand or as an arm depending on the state and the findings, and the difference on the Longshore schedule is 244 weeks against 312.
- Confusing a whole-person impairment with a scheduled member rating. A 10% whole-person rating is not a 10% arm rating; conversion between the two follows the Guides and the state statute.
- Assuming the schedule covers a back injury. Spinal injuries are almost always unscheduled and compensated on a different basis entirely.
- Settling before maximum medical improvement. A rating assigned before the condition stabilises understates it, and a full-and-final settlement usually closes future medical care.
Every figure here is a state variable
The compensation fraction, the weekly maximum and minimum, the schedule of members, the edition of the AMA Guides in force, whether temporary benefits are credited, and whether a body part is scheduled at all are set by each state's workers' compensation statute. The federal Longshore Act schedule is used here as a concrete, citable example, not as a national default. Look up your own state agency's rate table for the year of your injury before relying on any number.
Where the compensation claim sits beside a tort claim
Workers' compensation is the exclusive remedy against the employer, but it does not touch a claim against anyone else. A worker injured by a defective machine, a negligent driver or a careless subcontractor has both a compensation claim and a third-party tort action, and that tort claim does include pain and suffering — which the personal injury settlement calculator values. The compensation carrier that paid benefits then asserts a lien against the tort recovery, and the reductions available against it work much like any other lien; see the medical lien reduction calculator.
Where the injury permanently reduces what the worker can earn, the compensation schedule is unlikely to cover that loss, because it pays for the impairment rather than for the wage consequence. In a third-party action that gap is proved as lost earning capacity, discounted to present value — the lost earning capacity calculator does that calculation. And where a compensation claim is resolved with a structured settlement rather than a lump, the value of the payment stream is what the structured settlement present value calculator reports.
On the employer's side of the same system, the cost of these claims flows back into the experience modification factor and the premium. That is a different calculation from this one, but it is why claim handling is contested even when the benefit amount is not.