Two welders work the same shift for the same contractor. One is in a fabrication shop three blocks inland. The other is on a floating dry dock, repairing a hull. They do identical work with identical certifications for identical pay. If both are injured on the same Tuesday, they are compensated under two entirely different bodies of law, funded by two entirely different insurance policies.
Most employers discover this distinction at the worst possible moment, which is after the injury, when the state carrier reviews the loss location and declines the claim.
The Longshore and Harbor Workers' Compensation Act is a federal statute that provides workers compensation benefits to maritime workers who are not covered by state systems and are not crew members of a vessel. It is administered by the US Department of Labor through the Office of Workers' Compensation Programs, not by any state agency.
The reason it exists is jurisdictional. State workers compensation systems were built on state authority over land. Admiralty and maritime matters fall under federal jurisdiction. That left a category of workers, the people who load ships, repair hulls, and work the waterfront, sitting in a gap between the two. Congress closed the gap with a dedicated federal program.
In practice this means USL&H behaves like workers compensation in structure. It is a no fault system with medical benefits and wage replacement, and it generally bars the employee from suing the employer directly. What differs is the authority behind it, the benefit calculation, and critically, the policy that has to be in place before anyone gets hurt.
"USL&H is not a rider on a workers compensation policy. It is a separate federal system with its own coverage requirement, and a state policy will not quietly cover for it."
Whether a given worker falls under the Longshore Act is decided by two tests that must both be satisfied. Employers who get surprised usually satisfied one and assumed that meant neither applied.
The situs test asks whether the injury occurred on navigable waters or on an adjoining area customarily used by an employer in loading, unloading, repairing, dismantling, or building a vessel. That language covers more ground than people expect. Piers, wharves, dry docks, terminals, building ways, and marine railways are squarely inside it. So are adjoining land areas used for those purposes, which is how a worker standing on asphalt rather than water can still be a Longshore claimant.
The status test asks whether the person was engaged in maritime employment. Longshore workers, ship repairers, shipbuilders, and shipbreakers are named in the statute. Courts have extended the concept to workers whose duties form an integral part of the loading, unloading, building, or repairing process, even if their specific task on a given day looks ordinary.
There are exclusions, and they matter. Masters and crew members of a vessel are not Longshore claimants. They are seamen, and their remedies run through the Jones Act instead, which is a different exposure requiring a different policy. That distinction is the subject of the MEL and Jones Act guide.
The most expensive assumption in this area is that a state workers compensation policy is a floor that catches whatever the federal system does not. It is not. State policies are written to respond to claims arising under a named state act. A Longshore claim does not arise under a state act. The policy has no obligation to pay it.
Coverage for Longshore exposure normally comes through a specific endorsement to a workers compensation policy, and a carrier will only attach that endorsement if it has underwritten the maritime exposure deliberately. It does not appear by accident, and it does not appear because the employer assumed it would.
| State Workers Comp | USL&H | |
|---|---|---|
| Authority | Individual state act | Federal statute, administered by the US Department of Labor |
| Who it covers | Land based employees | Maritime workers who are not vessel crew |
| Where it applies | Within the state, on land | Navigable waters and adjoining maritime areas |
| Fault required | No | No |
| Benefit basis | State schedule and state caps | Federal formula tied to average weekly wage, with national caps |
| How it is secured | Standard workers comp policy | Deliberate endorsement, underwritten on maritime history |
| If the employer has none | State penalties | Loss of exclusive remedy protection plus federal penalties |
USL&H is usually filed mentally under shipbuilding, and shipbuilding is certainly the clearest case. But the situs and status tests reach across several industries that do not think of themselves as maritime at all.
The core case. Hull construction, outfitting, conversion, dry dock repair, and shipbreaking are named activities. Welders, shipfitters, pipefitters, electricians, riggers, painters, and QA inspectors working a yard are Longshore workers for as long as they are in the yard. See the shipbuilding EOR guide for how this plays out on a staffing basis.
Loading and unloading vessels is the activity the statute was written around. Terminal operators, stevedoring firms, container handlers, lashing crews, and the equipment operators who serve them are inside the zone. So, frequently, are the maintenance staff who service that equipment on the terminal.
Bridge and pier construction, bulkhead and revetment work, pile driving, and dredging support routinely put crews on or beside navigable water. A civil contractor that spends most of its year on highway work can move into Longshore exposure for the duration of one waterfront project and back out again when it ends.
Offshore modules, skids, and vessel components fabricated in a yard adjoining navigable water can trigger the situs test even though the work looks like ordinary heavy fabrication. The determining factor is the location and the purpose of the yard, not the appearance of the task.
This is the category most often caught out. A staffing firm that places a pipefitter into a shipyard has become the employer of a Longshore worker. If its policy covers only state workers compensation, the placement is uninsured for the exposure that actually exists. This is why so many trades staffing firms route waterfront placements through an EOR that already carries the coverage.
"The question is never whether your company is a maritime company. It is whether one worker, on one shift, stood in a place the statute names."
The consequences run deeper than an unpaid claim. Workers compensation is a bargain: the employee gives up the right to sue in exchange for guaranteed no fault benefits, and the employer gets predictable, capped exposure in exchange for paying regardless of fault. That bargain is conditional on the employer having secured the required coverage.
An employer who fails to secure Longshore coverage can lose the protection side of that bargain. The injured worker is then able to pursue the employer in a civil action, where the recovery is not bounded by a benefit schedule and where defences the employer would normally have available are curtailed. Federal penalties for failure to secure coverage sit on top of that, and responsible corporate officers can be reached personally.
For a single serious injury in a shipyard, the difference between a covered Longshore claim and an uncovered one is not a line item. It is frequently the difference between a manageable insured loss and an event that threatens the company.
Employers new to this usually expect to solve it with a phone call at renewal. It does not work that way. Carriers writing Longshore exposure are underwriting a severity risk in a hazardous environment with a federal benefit structure behind it. What they want to see is history: years of operations in the exact environments the policy would cover, a documented safety programme, and loss experience that supports the rate.
A company with no maritime record is not a candidate for the coverage regardless of willingness to pay. That is why the practical answer for most contractors and staffing firms is not to build the coverage, but to employ the workers through a partner that already holds it.
That is the structural role an Employer of Record plays here. When Revelation is the legal employer, the Longshore exposure sits on Revelation's programme, alongside workers compensation, risk, and safety administration. The client directs the work and keeps the customer relationship. Full detail on what is carried and why sits on the USL&H, MEL, and DOD specialty coverage page.
Find out whether your current coverage actually responds before someone gets hurt.
BOOK A CONSULTATIONUnited States Longshore and Harbor Workers. It refers to coverage required under the Longshore and Harbor Workers' Compensation Act, a federal workers compensation programme for maritime workers who are not crew members of a vessel.
Not unless it was deliberately endorsed to do so and the carrier underwrote the maritime exposure. Longshore coverage is added by specific endorsement. If nobody discussed maritime operations at binding, assume it is not there and confirm with your broker in writing.
Yes, and this is common for crews that split time between a shop and a waterfront site. Because coverage depends on where the work happened and what it was, the same employee can move between systems. Employers with mixed operations generally carry both rather than trying to track it shift by shift.
USL&H is a no fault benefit system for maritime workers who are not crew. The Jones Act applies to seamen, meaning masters and crew members of a vessel, and it gives them the right to sue the employer for negligence rather than claim scheduled benefits. Different workers, different exposure, different insurance.
Because carriers underwrite it on demonstrated operating history in maritime environments and on loss experience in those environments. A provider without that record cannot obtain the coverage at any price. It is earned over years, which is what makes it a durable differentiator rather than a product feature.
The Longshore Act's benefit provisions are extended to certain overseas work on US military bases and public works contracts through the Defense Base Act. The mechanics of the benefit are largely the same, but it is a separate coverage requirement and should be confirmed contract by contract.
With over 30 years of experience and more than half a billion dollars in payroll funded, Revelation Workforce Solutions is a trusted Employer of Record partner built on relationships, not just technology. We deliver fully compliant EOR services, including payroll administration, tax compliance, HR management, benefits, risk mitigation, and workforce technology across all 50 U.S. states. What truly sets us apart is our people providing a hands-on, personal approach that protects your brand, supports your employees, and keeps your business compliant at every level.
