Frequently asked questions
What does USL&H stand for?
United States Longshore and Harbor. It is shorthand, used across the insurance industry, for coverage written under the Longshore and Harbor Workers' Compensation Act — 33 U.S.C. §901 and following. The Act itself does not carry 'United States' in its name; the abbreviation does, and both refer to the same federal law.
Is USL&H actually required, or is it optional extra cover?
It is federally mandated, not optional. Where the Act applies, the employer must secure coverage either through an insurance carrier authorised by the U.S. Department of Labor or by qualifying as a self-insurer. An employer who fails to secure it faces criminal penalties, corporate officers can be held personally liable, and an injured employee may sue the employer at law with the usual common-law defences stripped away. Coverage requirements and the way the Act is applied change over time — confirm current requirements with the Department of Labor.
Doesn't ordinary workers' compensation already cover this?
Not over navigable water. State workers' compensation and federal USL&H are two separate schemes covering two separate groups of workers, and the boundary between them is roughly the water's edge. A contractor carrying only state coverage has employees who may fall outside both if they are hurt on a barge, on a dock being built over the water, or working from the water side of a wall.
How do I check whether a contractor actually carries it?
Ask for a certificate of insurance and look for USL&H named on it, not just workers' compensation. The two appear separately. Ask for the certificate to be sent by the broker rather than the contractor, and check it is current. This is a normal request and no legitimate marine contractor will be surprised by it.
Is this the same thing as the Jones Act?
No, and the distinction matters. The Jones Act covers seamen — masters and members of the crew of a vessel — who are specifically excluded from the Longshore Act. USL&H covers maritime workers who are not crew: dock builders, ship repairers, harbour construction workers. A marine construction crew generally falls under the Longshore Act rather than the Jones Act, but which applies to a given worker turns on the facts of their employment.
What happens to me, as the property owner, if a contractor is not covered?
An injury with no insurance behind it looks for somewhere to land, and a property owner is a visible target. That is the practical risk. What follows from it depends on the circumstances and on law we are not qualified to advise you on — which is rather the point of checking the certificate before work starts rather than afterwards.
Published November 10, 2026 · Last reviewed November 2026 by Barefoot Marine Construction. Agency requirements change — confirm current requirements with the reviewing agency before planning work.