Your client fell from scaffolding at a base in Kuwait and shattered his right leg. The overseas contract ended. He is home now, still in a cast, and the carrier just started paying weekly checks. His first question is not about the carrier or the paperwork. It is simpler and harder. He wants to know how long the money keeps coming.
You cannot answer that yet, and neither can the carrier. The honest answer depends on facts that have not happened. Whether his leg heals, whether he reaches a medical plateau, whether he returns to work, and how a judge later classifies the residual damage all shape the timeline. Each fork points to a different section of the statute and a different duration.
The Defense Base Act borrows its benefit structure from the Longshore and Harbor Workers' Compensation Act. That means the whole answer to how long do DBA benefits last permanent vs temporary lives in 33 U.S.C. Section 908. That single section splits disability into four categories. Two are temporary and two are permanent. One category can run for a fixed number of weeks. Another can run for the rest of your client's life.
Getting the category right is not academic. A misclassified claim can cut a lifetime award down to a few hundred weeks, or leave a five-year cap uncapped. This guide walks through each of the four DBA disability categories, what triggers the end of benefits, and where the duration rules bite hardest. Verify every figure against the current statute and case law before you rely on it, because classification is fact-sensitive and courts read these provisions closely.
How Long Does Temporary Total Disability (TTD) Last Under the DBA?
Temporary total disability is where most serious DBA claims begin. Your client cannot work at all, but doctors expect improvement. Under 33 U.S.C. Section 908(b), TTD pays two-thirds of the average weekly wage, subject to the fiscal-year maximum that applied on the date of injury.
Here is the part that surprises many people. TTD has no statutory duration cap. The payments are not limited to a set number of weeks. They continue as long as the worker remains totally disabled and still improving. That is why carriers fight the end of TTD so aggressively, and why the disputes over when temporary total benefits should terminate are among the most litigated issues in the entire system.
TTD ends when one of three things happens. The worker returns to work, the worker reaches maximum medical improvement, or the condition is reclassified. Until then, the checks keep coming. A claim can sit in TTD for a year, two years, or longer while surgery and rehabilitation play out.
The temporary label does not mean short. It means the medical picture is still changing. A back fusion followed by extended physical therapy can hold a worker in TTD status well past the two-year mark. The clock is medical, not calendar.
Carriers sometimes try to cut off TTD by scheduling an independent medical examination and arguing the worker has plateaued. That argument does not end benefits on its own. It shifts the dispute to whether the medical evidence actually supports a finding of maximum medical improvement, which is a separate question addressed below.
What Is the Five-Year Cap on Temporary Partial Disability (TPD)?
Temporary partial disability applies when your client can work some, but not at full capacity, and is still expected to improve. He might return to light duty at reduced hours or lower pay while healing. Under 33 U.S.C. Section 908(e), TPD pays two-thirds of the difference between the pre-injury average weekly wage and current wage-earning capacity.
TPD is the one temporary category with a firm ceiling. Section 908(e) limits temporary partial disability to a maximum of five years. Unlike TTD, this is a hard statutory duration, not a medical trigger. Once the worker has drawn TPD for the equivalent of five years, that specific benefit stream stops.
The five-year cap does not mean the claim ends. If the worker is still impaired when the cap approaches, the case usually needs to be reclassified. A partial impairment that has stabilized may convert into a permanent partial disability award, which follows entirely different duration rules.
Attorneys sometimes overlook the five-year limit because TPD claims move slowly and few reach the ceiling. But for long-tail injuries with slow recovery, the cap matters. Track the cumulative weeks paid, because a carrier is not obligated to warn you when the limit is near.
How Does Maximum Medical Improvement End Temporary Benefits?
Maximum medical improvement, usually written as MMI, is the hinge on which the whole timeline turns. MMI is the point at which the treating physician concludes the condition will not get materially better with further treatment. It does not mean the worker has recovered. It means the medical picture has stabilized.
Reaching MMI ends the temporary phase. Both TTD and TPD stop at MMI because their defining feature, expected improvement, no longer exists. From that date forward, any continuing disability is permanent by definition, even if the worker feels no different than the week before.
Because MMI resets the entire benefit calculation, it is one of the most contested factual findings in DBA litigation. The date a judge assigns as the MMI date can shift thousands of dollars between temporary and permanent columns. That is why the fight over when maximum medical improvement actually occurred often decides the value of the case.
MMI is a medical opinion, not a legal deadline. Different physicians can assign different MMI dates for the same injury. When the treating doctor and the carrier's examiner disagree, the administrative law judge weighs the evidence and picks a date. That single finding then dictates which subsection of Section 908 governs the rest of the claim.
Do Permanent Total Disability (PTD) Benefits Really Last a Lifetime?
Permanent total disability is the highest-value outcome under the DBA. It applies when the worker, after MMI, cannot return to any suitable gainful employment. Under 33 U.S.C. Section 908(a), PTD pays two-thirds of the average weekly wage for the duration of the disability.
For the duration of the disability generally means for life. There is no fixed number of weeks and no dollar ceiling on the total. A younger worker with a catastrophic injury can draw PTD for decades. At the FY2026 maximum weekly rate of roughly $2,082, a lifetime award can exceed $2 million in compensation alone, before uncapped medical benefits under Section 907.
PTD also carries annual cost-of-living adjustments. Under Section 910(f), the rate increases each October based on movement in the national average weekly wage. Over a long claim, those adjustments compound and add substantial value. This combination of lifetime duration plus COLA is exactly why permanent total disability draws the most aggressive carrier defense in the system.
Total does not always require the loss of every limb. The odd-lot doctrine can support PTD when the worker retains some physical capacity but, given age, education, and work history, cannot realistically find steady employment. A judge may find a worker permanently and totally disabled even though he can theoretically perform some tasks. The practical inability to compete in the labor market is what controls.
PTD is not automatically permanent in the sense of untouchable. A carrier can still seek to reduce or terminate it through modification if the worker's condition or earning capacity later changes, which is covered in the final section.
How Long Do Scheduled vs Unscheduled Permanent Partial Awards Last?
Permanent partial disability, or PPD, is the fourth category and the most technical. It applies when the worker has a permanent impairment after MMI but retains some ability to work. Section 908(c) splits PPD into two very different tracks, and the duration rules diverge sharply between them.
Scheduled awards cover specific body parts listed in the statute. Section 908(c) assigns a fixed number of weeks to each enumerated member. The award runs for exactly that many weeks at two-thirds of the average weekly wage, regardless of whether the worker returns to full pay. For total loss of a leg, the schedule provides 288 weeks. Loss of an arm runs longer, and smaller members such as fingers and toes run much shorter. Confirm the exact figure for the body part at issue, because the scheduled weeks assigned to each body part control the ceiling on these claims.
Scheduled awards are predictable precisely because they are capped in weeks. You multiply the impairment percentage by the scheduled weeks, then by the compensation rate. A 50 percent loss of use of a leg yields half of 288 weeks, or 144 weeks of benefits. The number is fixed at MMI and does not extend with inflation.
Unscheduled awards work in the opposite way. Injuries to the back, neck, head, and internal organs are not on the schedule. Under Section 908(c)(21), these are compensated based on loss of wage-earning capacity rather than a fixed member. There is no set number of weeks. Payments continue as long as the wage-earning-capacity loss persists, which can mean a lifetime for a serious back injury.
The scheduled-versus-unscheduled distinction is one of the highest-stakes classification fights in DBA practice. A capped scheduled award and an open-ended unscheduled award can differ by hundreds of thousands of dollars. Nail down the classification before you concede either label, because the wrong one can quietly cut a lifetime claim down to a fixed run of weeks.
When Do DBA Benefits End, Convert, or Get Reduced?
Duration is not just about how long a benefit could last. It is about the events that end it, convert it, or reduce it. Understanding those triggers is what lets you protect a client's timeline.
Benefits convert at MMI. Temporary categories give way to permanent ones, and a partial claim can shift to total or the reverse. A worker may move from TTD to a scheduled PPD award, then, if the impairment spreads beyond the scheduled member, to an unscheduled award. Each conversion changes the duration rule that applies.
Cost-of-living adjustments reach only two categories of benefit. Under Section 910(f), the annual October increase applies to permanent total disability and death benefits. It does not extend to permanent partial disability, scheduled or unscheduled, and it does not apply to TTD. A permanent partial award stays pegged to the rate set when it began, whether that is a fixed run of scheduled weeks or an ongoing wage-loss award, while a PTD or death award grows each October with the national average weekly wage. Confirm the current treatment of each benefit type before you project a claim's value.
Death benefits carry their own duration. When a covered injury causes death, Section 909 provides benefits to the surviving spouse for life, ending on remarriage, with a two-year lump sum payable at remarriage. Dependent children generally receive benefits until age 18, or later if enrolled in school. These durations run independently of any disability benefits the worker received while alive.
Permanent does not mean frozen. Under 33 U.S.C. Section 922, either party can seek modification of an award within one year of the last payment of compensation. A carrier can move to reduce or terminate benefits if it shows a change in the worker's physical condition or earning capacity. A claimant can move to increase benefits on the same basis. The one-year clock is strict, and missing it can foreclose a meritorious change. Treat the Section 22 window to reopen an award as a hard deadline, not a suggestion.
Every DBA claim carries a different clock depending on how it is classified, and the classification can shift more than once as the medical and vocational picture develops. The four categories, the MMI hinge, the schedule, and the modification window together decide whether a claim lasts weeks or a lifetime. FOIA database results and adjudicated decisions show how often carriers press to reclassify claims into shorter-duration buckets, which is why locking the correct category early is worth the effort.
Duration analysis assumes you have already identified the correct insurance carrier obligated to pay. When a claim runs for decades, the carrier on the hook may have changed names, merged, or been replaced through a contract recompetition long before the last check is due. Run your client's employer, location, and injury date through ClaimTrove to trace the responsible carrier across the full life of the claim before you calculate a single benefit.