How LHWCA Disability Benefits Are Calculated

How are LHWCA disability benefits calculated?

The calculation starts with your legally determined average weekly wage, then applies the rule for your disability category. Total disability generally uses two-thirds of that wage; partial disability may use lost earning capacity or a statutory schedule. Applicable limits, dates and credits can change the payable amount. A settlement is a separate agreement. [3] [5]

Understanding how LHWCA disability benefits are calculated requires more than multiplying the last paycheck by a percentage. First establish coverage, identify the wage base, determine the category for the particular period, and then apply the relevant ceiling or floor. A worker can move between categories as recovery and employment circumstances change. The same claim may therefore have several valid weekly rates over its history. [1] [2] [5]

This guide focuses on checking a disability-payment calculation under the federal Longshore and Harbor Workers’ Compensation Act. It is not a state workers’ compensation calculator, an eligibility decision, or a settlement valuation. The examples below are hypotheticals using assumed facts, not reports of clients or predictions. For a broader introduction, start with what the LHWCA covers; for the full range of covered benefits, including medical care, see what you can recover.

A useful calculation sheet has separate lines for average weekly wage, disability classification, relevant dates, the applicable statutory limit, and compensation already paid. Keeping those inputs separate makes a disagreement understandable. If two calculations differ, ask which input changed before arguing about the final total. A correct percentage cannot repair an incorrect wage base, and a correct wage base does not establish that the worker qualifies for a particular category.

The scope is deliberately narrower than deciding which maritime law applies. A vessel crewmember, a harbor worker, and an offshore contractor can face different coverage questions. This article assumes the federal Longshore framework has been established. Its ordinary minimum-rate discussion should not be carried into a Defense Base Act claim, which has a different minimum rule. [1] [2] [14]

What must be established before using the federal formula?

You must first have a covered work injury and a compensable disability under the applicable federal framework. Ordinary Longshore coverage depends on statutory employment and location requirements, with exclusions. Disability generally concerns injury-related earning incapacity, not simply a diagnosis. Coverage and the amount payable are separate questions, and each requires its own evidence. [1] [2]

Section 2 identifies covered maritime employment and exclusions, including masters and vessel crewmembers. Section 3 describes covered locations and other limitations. A waterfront address alone does not establish entitlement. Record the work actually performed, where the injury occurred, the employer involved, and any vessel connection. If those questions are unresolved, use who qualifies for LHWCA benefits and the statutory sources below to frame them before relying on an estimate. [1] [2]

Disability is ordinarily an economic concept under section 2(10): the work injury affects the ability to earn the wages received when injured. That differs from a medical impairment score. Some scheduled permanent partial benefits and certain retired-worker occupational-disease claims use specialized impairment rules. Applying a single percentage of bodily impairment to every claim would erase distinctions Congress expressly made. [1] [5]

A state compensation payment does not by itself answer federal coverage. Section 3(e) provides a credit for amounts paid under another workers’ compensation law or the Jones Act for the same injury, disability or death. That provision matters when checking a federal payment history: adding two benefit streams together may overstate the remaining amount due. State eligibility and state credit rules require their own analysis. [2]

The related fault versus no-fault guide explains differences between fault and no-fault systems. For this calculation, keep the focus on the statutory inputs rather than assuming one system always pays more. Ask the claims examiner or counsel to identify the law under which each payment was made. Preserve the award or payment notice, not just the bank deposit, because similar deposit amounts can represent legally different obligations.

How is average weekly wage determined?

Average weekly wage is the statutory measure of pre-injury earning capacity. Section 10 provides different methods depending on the work history and whether a method fairly represents annual earning capacity. Annual earnings are generally converted to a weekly amount by dividing by 52. Simply dividing every worker’s last calendar-year total by 52 is not always correct. [6]

Section 10(a) addresses a worker employed in the relevant employment during substantially the whole preceding year. Its annualization method uses the average daily wage with different multipliers for five-day and six-day workers. Section 10(b) looks to a comparable worker where the injured employee did not work substantially the whole year. Section 10(c) supplies a fair earning-capacity approach where those methods cannot reasonably and fairly be applied. [6]

The practical question is why a particular method fits the actual work pattern. A newly hired employee, a seasonal worker, and an established worker with a regular schedule may need different evidence. A payroll total is a starting point, not a reason to ignore a long absence, changed duties, or unusual employment conditions. Ask for the annual-earnings figure and the section 10 subsection used to derive it. [6]

For a hypothetical calculation, assume the proper statutory method produces annual earnings of $78,000. Dividing that figure by 52 produces an average weekly wage of $1,500. This example does not establish that a tax return showing $78,000 necessarily yields the same result. It assumes the annual figure has already been determined under the appropriate method. The distinction keeps the arithmetic separate from the legal choice of wage base. [6]

To audit how LHWCA disability benefits are calculated, gather pay statements, time records, employment dates, and documents explaining gaps or changes in work. Keep gross wages separate from net take-home pay. Request the employer’s underlying wage statement rather than accepting a weekly figure without a derivation. A useful written question is: which earnings, days worked, annualization method and comparison records produced this wage base? [1] [6]

Which earnings and employment records should you check?

Check the wage components and the work pattern, not only the final wage total. The statutory definition includes compensation for employment and certain taxable advantages, while excluding specified fringe benefits. Section 10 also directs attention to representative earning capacity. Payroll records should therefore explain what was included, what was excluded, and why the chosen period is representative. [1] [6]

Overtime, shift differentials, bonuses and allowances should be identified separately in the records so their treatment can be evaluated. Do not automatically label every payment wages or every allowance reimbursement. Section 2(13) defines wages and expressly excludes employer contributions to listed benefit plans. The name printed beside a payroll item is not enough to resolve how that item fits the statute. Preserve the employment agreement and the explanation for unusual payments. [1]

For a hypothetical worker paid at changing rates during the year, create a chronology of the changes. Put the effective date next to the job assignment, hourly rate, typical hours and reason for the change. Then compare that chronology with the carrier’s wage calculation. This does not guarantee use of the highest rate; it gives the decision-maker evidence for assessing whether the statutory method reasonably reflects earning capacity. [6]

The same organizational approach helps with intermittent maritime work. Separate weeks with no available work from weeks missed for personal reasons, and record work for other employers rather than leaving it unexplained. Section 10(c) permits consideration of several sources of earnings when the ordinary methods do not fit. Whether that subsection applies is a legal and factual question, so the goal is a complete record rather than selecting whichever calculation is largest. [6]

Keep a copy of every version of the wage worksheet. If the employer corrects a payroll omission, record both the old and revised figures and the date the correction was supplied. Ask whether the change affects earlier compensation periods as well as future installments. The record should let someone reconstruct the calculation without relying on a telephone conversation or an unexplained spreadsheet cell.

How do the four disability categories change the calculation?

Temporary and permanent describe the duration or stability of the condition; total and partial describe its effect on earning capacity. Total-disability payments generally start with two-thirds of average weekly wage. Temporary partial and unscheduled permanent partial payments use lost earning capacity. Scheduled permanent partial awards use the statutory body-part schedule instead. [5] [12]

Starting calculations before applicable limits and claim-specific adjustments

Swipe or scroll sideways to see all columns.

Maximum medical improvement is commonly the dividing point between temporary and permanent status. It does not automatically mean the worker can return to the old job, and it does not automatically end compensation. A worker may still have permanent total or partial disability after medical improvement has stabilized. Read the medical opinion for the restrictions and prognosis it actually states rather than treating the initials MMI as a complete benefits decision. [12]

A hypothetical claim might begin with a period out of work, continue with restricted duties, and later involve a permanent limitation. Prepare separate rows for those periods, with the medical evidence and earnings records supporting each. Avoid estimating the whole claim by multiplying today’s payment by an assumed number of future years. Classification and earning-capacity evidence may change, and a future settlement requires separate evaluation. [5]

When comparing an insurer’s explanation to your records, distinguish disagreement about the date of improvement from disagreement about suitable work or wage capacity. They can affect different parts of the formula. Ask for the classification and rate assigned to each disputed period. A single label on a recent letter may not explain why an earlier period was paid differently.

What do total-disability calculations look like in practice?

For temporary total or permanent total disability, begin with two-thirds of the properly established average weekly wage, then apply the applicable limits and other rules. The payment continues only while the requirements for that category remain satisfied. Permanent total status is not a guarantee that an unchanged check will continue regardless of later circumstances. [3] [5]

Assume, hypothetically, that a covered worker has an established average weekly wage of $1,500, is temporarily totally disabled, and is subject to a ceiling above the resulting rate. The starting calculation is $1,500 multiplied by two-thirds, or $1,000 per week. That number represents the assumed weekly entitlement, not necessarily the amount of each deposit. Payments may cover multiple weeks, a partial period, or arrears. [5] [9]

Now assume a higher wage base of $3,600 and disability beginning in the October 2026 rate period. Two-thirds is $2,400, which exceeds that period’s $2,163.92 maximum. If that is the applicable cap and there are no other adjustments, the weekly payment is limited to $2,163.92. The unreplaced wage difference is not an arithmetic error; it results from the statutory ceiling. [3] [14]

At the lower end, assume an ordinary Longshore total-disability claim with a $750 average weekly wage and the same applicable rate period. Two-thirds is $500, below the $540.98 minimum, so the total-disability minimum raises the payment to $540.98. If average weekly wage instead is $480, the statute provides the actual $480 wage amount. Do not use these minimum examples for partial disability or Defense Base Act claims. [3] [14]

For permanent total disability, retain the original wage calculation and each later adjustment notice. Annual adjustments can explain why a later payment differs from the original two-thirds calculation. Conversely, a condition described as permanent by a doctor does not alone settle whether disability is total. The legal classification and supporting vocational evidence still matter. [1] [5] [6]

How are partial-disability payments based on earning capacity?

Temporary partial disability and ordinary unscheduled permanent partial disability generally pay two-thirds of lost earning capacity. Subtract post-injury earning capacity from the established average weekly wage before applying the fraction. Actual earnings govern when they fairly represent capacity; otherwise the decision-maker may determine a reasonable capacity using the injury, employment and other relevant circumstances. [5]

Assume a hypothetical pre-injury average weekly wage of $1,500 and a fairly representative post-injury earning capacity of $900. The difference is $600; two-thirds of that difference is $400 per week before any other applicable adjustments. Using two-thirds of the entire $1,500 would confuse partial and total disability. Using two-thirds of the new $900 wage would answer the wrong question as well. [5]

Actual wages are important evidence, but section 8(h) does not make them conclusive in every situation. If earnings do not fairly reflect capacity, the decision-maker considers the nature of the injury, physical impairment, usual employment and circumstances affecting future earning ability. A job offered with unusual accommodations or irregular hours may require explanation. This is a fact-sensitive inquiry, not permission to choose an assumed wage that produces a preferred benefit. [5]

Temporary partial benefits have a statutory limit of five years. Unscheduled permanent partial benefits under section 8(c)(21) continue during the partial disability rather than following that temporary-partial limit. Neither rule permits ignoring changes in the worker’s earning capacity. Keep records of duties, restrictions, hours, earnings and unsuccessful work attempts so the relevant period can be evaluated accurately. [5]

A wage increase can also require careful comparison. Do not assume a higher nominal paycheck proves that an injury has no economic effect, or that returning at lower pay automatically establishes the exact compensable loss. Ask what evidence supports the earning-capacity figure and how the available work fits the medical restrictions. Ask the claims examiner or your lawyer to explain how the earning-capacity evidence affects each disputed period. [5]

How do scheduled permanent partial awards work?

A scheduled award ties permanent loss or loss of use of a listed body part to a specified number of compensation weeks. A partial loss can produce a proportional award. The impairment assessment, correct scheduled member and applicable compensation rate all matter. The schedule is not a general settlement table for every injury. [5]

Section 8(c) assigns 312 weeks for loss of an arm, 288 for a leg, 244 for a hand, and 205 for a foot. It also provides rules for digits, vision and hearing, including 52 weeks for loss of hearing in one ear and 200 for both ears. These are statutory durations for the specified losses, not promised durations for any injury involving those areas. [5]

For a hypothetical scheduled hand claim, assume a supported 10 percent permanent loss of use and an applicable weekly compensation rate of $1,000. Ten percent of the hand schedule’s 244 weeks is 24.4 weeks. Multiplying 24.4 by $1,000 produces $24,400 for that assumed scheduled component. This example excludes other periods and benefits and assumes the rating and classification are correct. It is not a suggested settlement offer. [5]

An impairment report should identify what was measured, which body part was rated, and how the conclusion was reached. Do not substitute an informal estimate, pain score or percentage copied from a different claim. Hearing claims have specific statutory requirements concerning audiograms and impairment evaluation. Save the actual report and the date it was received; those details can affect more than the award amount. [5]

The schedule also includes rules for multiple members and multiple digits that prevent simply adding every possible line item. A worker whose impairment produces total disability presents a different issue from an ordinary scheduled partial claim. Ask whether the proposed calculation accounts for the actual classification and all compensable periods. A diagnosis mentioning an arm, shoulder, hand or nerve does not by itself resolve the correct statutory treatment. [5]

Which maximum, minimum and annual adjustment apply?

Use the rate period that legally applies to the claim, not automatically the newest table. For October 1, 2026 through September 30, 2027, DOL lists a $2,163.92 maximum and $540.98 total-disability minimum. Permanent total and death benefits have annual adjustment provisions; ordinary temporary and permanent partial payments do not receive that same automatic increase. [3] [6] [14]

The maximum equals twice the applicable national average weekly wage, while the ordinary total-disability minimum is half of that national figure, subject to the low-wage exception. National average weekly wage is not your personal average weekly wage. The former sets statutory limits; the latter supplies your individual compensation base. Keeping two separately labeled lines on the worksheet avoids a common source of confusion. [3]

For most disability claims, Roberts v. Sea-Land Services explains that the initial maximum relates to when the worker first becomes disabled and statutorily entitled to compensation, not when a later administrative order is issued. A delayed decision does not simply move the claim into a newer, higher cap. Permanent total disability and occupational-disease issues can require additional date analysis. [13]

The October 2026 section 10(f) adjustment is 3.90 percent. Section 10(f) limits the annual increase for permanent total disability and death benefits to the smaller of the relevant national wage increase or 5 percent. Section 10(g) addresses rounding, and the current bulletin explains maximum-rate handling. Do not apply 3.90 percent to every check just because the calendar has passed October 1. [6] [14]

This is one reason current explanations of how LHWCA disability benefits are calculated may show different figures from older site guides. The date range belongs beside every quoted limit. Check the official [11] table and preserve the applicable bulletin with the calculation. The research check for this guide on October 25, 2026 found no relevant change in the preceding seven days in the searched DOL notices and federal-rule results; that is a bounded research finding, not a guarantee about every development.

What changes for occupational disease after retirement?

Certain occupational-disease claims arising after retirement use special wage and impairment rules. Section 10(d)(2) distinguishes the first year after retirement from later periods, and section 8(c)(23) uses permanent impairment in qualifying claims. The legally defined time of injury matters. These cases should not be calculated by assuming a retired worker has zero earning capacity and applying the ordinary formula. [5] [6]

For qualifying disease claims within the first year after retirement, the statute refers to earnings during the period preceding retirement. When the relevant time of injury is more than a year after retirement, section 10(d)(2) uses the applicable national average weekly wage. Section 10(i) defines a special awareness-based time of injury for disease that does not immediately cause disability or death. The medical and employment chronology is therefore essential. [6]

Section 8(c)(23) provides two-thirds of the applicable wage base multiplied by the permanent impairment percentage for claims governed by that rule, payable during the impairment. This is different from choosing a body-part schedule or treating every retired person as totally disabled. The statutory definition of disability also changes for this group. A correct calculation must identify that the claim actually falls within the specialized provisions. [1] [5]

Build a timeline with the retirement date, symptoms, diagnosis, medical advice about work causation, and when the connection between employment, disease and disability became known or should have become known. Keep these entries distinct even if some occurred together. An exposure date, a diagnosis date and a legally determined injury date need not answer the same question. An attorney or claims examiner can then explain which date controls each calculation. [6]

Workers still employed when disease becomes disabling may present different facts. Hearing loss also has specific statutory provisions, including when an audiogram and report have been received. Avoid transferring a rule from an asbestos-retirement example to hearing loss or to an acute workplace injury. The useful next step is a written explanation of the controlling subsection and date, not a universal disease-benefit estimator. [5] [6]

When do payments begin, and how should you audit a deposit?

The Act generally excludes compensation for the first three disability days, but restores those days when disability lasts more than fourteen days. Medical benefits are treated separately. The first installment generally becomes due on the fourteenth day after employer notice or knowledge, with statutory rules for controversion and later installments. A waiting period and a payment due date are different concepts. [3] [9]

To audit a deposit, obtain the period it covers and the weekly rate used. A check received this week may pay for an earlier interval or include arrears. Compare the covered dates with medical work-status records and earlier payments, then identify missing or overlapping periods. Dividing an unexplained deposit by an assumed number of weeks can create a false impression that the weekly rate changed.

Section 14 generally calls for prompt periodic payment without an award unless liability is controverted. It also provides for notification when payments begin or stop and procedures when entitlement is disputed. If payments stop, ask for the stated reason and the supporting notice. The appropriate response may involve medical evidence, wage information or a coverage dispute rather than a different arithmetic calculation. [9]

Late-payment additions have specific conditions. Section 14(e) addresses certain installments payable without an award and includes controversion and excuse provisions. Section 14(f) addresses compensation under an award, with a different delay period and a stay exception. Do not add a penalty to a personal worksheet merely because a bank deposit arrived later than expected. Preserve the order, due date, payment records and any stay or controversion documents. [9]

A simple reconciliation table can list covered start and end dates, benefit category, stated weekly rate, payment received and the question needing resolution. Keep medical reimbursements separate from cash disability benefits. Necessary treatment is governed by section 7 and is not simply a deduction from the weekly disability ceiling. Authorization, provider choice and treatment disputes have their own rules. [4]

How can you challenge a calculation without losing track of deadlines?

Request the wage worksheet, classification dates, earning-capacity basis and payment ledger, then identify the specific disagreement in writing. Preserve notice and claim-filing rights while the calculation is discussed. Reporting an injury, filing a claim and seeking modification are different acts with different rules. Do not assume an informal conversation protects every deadline. [7] [8] [10]

Ordinary injury notice generally has a thirty-day period, subject to the awareness language and statutory exceptions in section 12. Certain occupational diseases have a different notice period. Section 12 also addresses employer knowledge, prejudice and excuses for missing notice. These provisions require facts; they are not reasons to delay reporting. Preserve proof of the notice actually given and who received it. [7]

Claim filing under section 13 ordinarily has a one-year rule, with awareness provisions and a rule tied to the last voluntary compensation payment. Disease that does not immediately cause disability or death has a separate two-year awareness-based provision and a later-payment alternative. The statute also contains provisions for minors, incompetence and certain prior litigation. An employer’s accident report and your claim for compensation should not be treated as interchangeable. [8]

Section 22 permits modification based on changed conditions or a factual mistake, generally within one year after the last compensation payment or rejection of the claim. It does not authorize modification of settlements. That distinction makes the procedural posture important: correcting an ongoing rate, challenging an order, and undoing a settlement are not the same request. Obtain advice about the applicable route and deadline rather than relying on this general description as a calendar. [10]

An effective request includes the claimed error, the document showing it, the affected periods, and the correction sought. For example, a hypothetical worker might identify an omitted payroll statement rather than simply say the check is too small. Ask the OWCP claims examiner about the discrepancy and consider consulting a maritime injury lawyer for individualized advice. Keep submission confirmations and responses together so another reviewer can understand what remains disputed.

How does the weekly calculation differ from a settlement?

Weekly compensation applies statutory rules to established facts and periods of disability. A settlement under section 8(i) is an agreement subject to statutory approval and may resolve future liability, including medical benefits if included. The weekly rate informs that discussion, but multiplying it by a guessed duration does not establish a fair settlement. [5]

Ongoing benefits follow statutory formulas, while the Act also permits settlements. A proposed settlement can involve disputed wage bases, disability classifications, future earning capacity and medical obligations. Separate those issues before evaluating a lump sum. A large number can conceal an undervalued weekly rate or a misunderstood release of future care. [5]

Ask what is being resolved, which benefits remain open, and how the agreement treats already accrued compensation. Section 8(i) requires approval before the employer or carrier’s liability is discharged under its settlement process. The statute also contains specific rules for represented parties and disapproval. Section 22 expressly excludes settlements from its modification authority, making careful review of the actual agreement particularly important. [5] [10]

A hypothetical offer based on a $400 partial-disability rate is not comparable to another based on a $1,000 total-disability rate unless the classifications and expected periods are explained. Likewise, an amount that leaves medical care open differs from one that closes it. Keep the calculation worksheet and the proposed settlement terms side by side, and have counsel explain the assumptions rather than relying on a headline amount.

The practical value of learning how LHWCA disability benefits are calculated is being able to ask precise questions. Bring wage records, medical restrictions, work history, notices and payment statements to the discussion. Use the statutory sources below to check the calculation and Find a Lawyer if you want to request an attorney connection. Offshore Injury Help is an editorial and referral resource; submitting an inquiry does not itself establish representation or guarantee a recovery.

Frequently asked questions