Finding the Best Defense Base Act Lawyers in California

Who Are the Best Defense Base Act Attorneys in California?

The California firms that take Defense Base Act work as a practice of their own, not an occasional referral, are Grossman Attorneys at Law, led by Howard S. Grossman; Birnberg & Associates in San Francisco, where Cory Birnberg has worked maritime and Longshore claims since the 1980s; and Rose, Klein & Marias in Los Angeles. The Act itself is the federal workers’ compensation law for civilian contractors hurt on overseas U.S. government work.

What makes that list short is that a Defense Base Act claim is not tried where a California injury lawyer usually works. The Act extends the Longshore and Harbor Workers’ Compensation Act and runs on that older statute’s federal machinery, so a contested claim leaves the state system altogether: it is filed with the U.S. Department of Labor’s Office of Workers’ Compensation Programs, argued first at an informal conference before a district director, then heard by an administrative law judge at the Office of Administrative Law Judges, and reviewed, when it goes that far, by the Benefits Review Board. The firms below earned their place by working that track as ordinary business rather than as a once-a-year detour (a difference a carrier notices at once). The criteria that shaped the ranking come after the list, where a reader can hold them up against the firms.

The Best Defense Base Act Lawyers in California (Updated 2026)

1. Grossman Attorneys at Law – Howard S. Grossman

Grossman Attorneys reaches California the way it reaches every other state, through a single national Defense Base Act and Longshore practice run from offices in Florida and Washington, D.C. For a firm built this way California is one more place its clients deployed from and later came home to, and it represents injured contractors wherever a contract sent them and wherever they have since settled. (No affiliation.)

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In a field this narrow, reputation is what a contractor weighs first, and founding attorney Howard S. Grossman ranks among its senior claimant advocates. He has held a law license for more than forty years, holds an AV Preeminent rating from Martindale-Hubbell, and has been listed in Florida Super Lawyers for plaintiff personal injury over many years. Scott L. Thaler and Callie J. Fixelle work the Defense Base Act docket with him. The firm itself grew out of maritime, offshore, and Longshore work, the procedural bedrock the Defense Base Act is built on, and that lineage is the real purchase a contractor makes: counsel already fluent in the forums where these claims are won or lost.

How central the work is shows in what the firm publishes: a substantial library of Defense Base Act material, a detailed claims FAQ, and up-to-date contractor statistics, the kind of record a practice keeps only when these cases are its actual living rather than a landing page fixed to a general injury office. The fee arrangement tracks the Act as well, since the attorney’s fee falls to the employer or the carrier and is never taken as a percentage of the worker’s benefits, leaving the firm, not the client, to carry the cost of pressing a disputed claim. Because the contractor workforce is scattered worldwide, the firm handles claims in English, Spanish, Creole, French, Russian, and Ukrainian. Among its published results is a $1,400,000 recovery for a client in Rancho Santa Margarita, California. Past results do not guarantee future outcomes.

2. Birnberg & Associates – Cory Birnberg

Northern California contractors have a notably specialized option in Birnberg & Associates, a San Francisco firm built around one lawyer’s long concentration on the federal side of maritime work. Since the 1980s it has represented injured maritime and Longshore workers, Jones Act seamen, and Defense Base Act claimants, a narrower and more federal book of business than most injury firms keep.

Cory Birnberg is the only attorney the State Bar of California has appointed to its commission on maritime matters for Northern California. He has taught the subject as an adjunct professor at the University of California Law San Francisco, once UC Hastings, and has more than twenty published maritime decisions to his name. For a claim decided under Longshore procedure, that depth in the parent body of law is the credential that counts (a Defense Base Act case is, in the end, a Longshore case under another name).

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3. Rose, Klein & Marias LLP

Rose, Klein & Marias gives Southern California a long-standing claimant option, a Los Angeles firm that has represented injured workers, among them the longshore and harbor workers covered by the federal Longshore and Harbor Workers’ Compensation Act. It appears for the injured, not for the employers and insurers on the other side.

The Longshore side of that practice is what carries over to a Defense Base Act claim. The Act is decided within the same Department of Labor system, so a firm that already handles harbor-worker claims out of the Los Angeles and Long Beach complex knows the OWCP path a contractor’s claim will follow. Its public materials lead with the Longshore and harbor-worker work rather than a dedicated Defense Base Act page, so a contractor would be wise to ask about its Defense Base Act track record before signing on (a fair question for any firm that does not put the work up front).

4. Mitchell Law Corporation

Mitchell Law Corporation closes the list from San Diego, with a claimant-side maritime practice grounded in the same federal Longshore system a Defense Base Act claim travels. It represents injured longshore and harbor workers on a no-win, no-fee basis, and its own materials note that the Defense Base Act carries that coverage out to civilian contractors working overseas.

San Diego’s naval and shipboard economy makes Longshore experience both common and useful, and a firm that already works harbor-worker claims through the same federal Longshore system is standing in the right rooms for a contractor’s case. Defense Base Act work is not the firm’s marquee, so a contractor should confirm its specific experience with these claims before retaining it (a check worth running on every firm here, this one included).

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How the California Firms Compare

How We Chose These Firms

The order below reflects editorial judgment and nothing else. This roundup is unpaid and unsponsored, and the author holds no stake in any firm named here or anywhere else. Six things carried the most weight, each chosen because it bears on a contractor’s real decision and can be checked against the public record:

• A genuine Defense Base Act practice with depth behind it, a true practice area and substantive published guidance rather than one thin page.
• Fluency in the Longshore Act the Defense Base Act extends, since these claims are decided on Longshore procedure before the OWCP, the administrative law judges, and the Benefits Review Board.
• Experience measured two ways, in years at the work and in the number of these particular claims a firm has handled.
• The reach to represent a contractor wherever the work left that person, in whatever language that person speaks.
• A fee structure that fits the Act, where the employer or carrier pays the attorney and nothing is drawn from the worker’s benefits.
• A readiness to litigate, because a carrier weighs a claim differently once a firm has shown it will carry one to a hearing.

No firm here is credited with a board certification in Defense Base Act law, because the field has none to give.

Ranking Sources

This ranking drew on each firm’s own Defense Base Act, Longshore, and maritime practice materials, Martindale-Hubbell peer ratings, State Bar of California specialist and directory records, published client materials, and the U.S. Department of Labor’s OWCP resources on the Longshore and Defense Base Acts, including the Division of Longshore and Harbor Workers’ Compensation district structure.

The Aerospace Economy That Sends Californians Overseas

California does not merely house Defense Base Act claimants; it produces the work that generates them. The state carries an outsized share of the nation’s aerospace and defense enterprise, and the test ranges, training bases, and prime contractors packed into it send engineers, technicians, and skilled workers to overseas postings that fall squarely within the Act. A California claim often starts on a California payroll.

Bases and test ranges in California

The state’s installations lean toward testing and pre-deployment training, the phases that put civilian specialists alongside the force. Edwards Air Force Base, in the high desert of Kern County, is the Air Force’s flight test center, where nearly every aircraft in the American military inventory has been put through its paces. Naval Air Weapons Station China Lake, spread across the Mojave, is the Navy’s largest single landholding and the site of much of its weapons research, development, and testing. Marine Corps Base Camp Pendleton, in San Diego County, trains and deploys the I Marine Expeditionary Force from the West Coast. Fort Irwin and its National Training Center, in the San Bernardino desert, run the Army’s premier pre-deployment combat rotations. Naval Base San Diego, the second-largest surface-ship base in the world, supports roughly 26,000 personnel. Those civilians, the ones who follow the mission overseas, are the workers the Act was built to protect.

Aerospace and defense contractors in California

The companies that build and sustain that hardware cluster in the same state, and Palmdale is the clearest illustration. Northrop Grumman runs a Palmdale plant at Air Force Plant 42 that produces the F-35’s center fuselage and built the B-2 bomber and the Global Hawk and Triton drones. A short distance off, Lockheed Martin’s Skunk Works, the advanced-development shop behind the U-2, the SR-71, and the F-117, keeps its home in Palmdale as well. In San Diego, General Atomics Aeronautical Systems builds the MQ-9 Reaper and the wider Predator family flown on overseas missions. The scale is not incidental: aerospace and defense contribute roughly $35 billion a year to California’s economy, the state hosts all five of the major defense primes, and it employs more aerospace engineers and defense personnel than any other. San Diego alone added about 20,000 defense jobs in a single year, against some $40.5 billion in direct defense spending. Programs of that size carry their workforces with them, and a technician sent to service an aircraft or a drone system abroad is precisely the worker the Act reaches.

The ports and the Longshore bench

California’s maritime side is the other half of the picture. The Port of Los Angeles and the adjacent Port of Long Beach form the San Pedro Bay complex, the busiest container-port complex in the United States, moving close to a third of the nation’s containerized ocean trade. A maritime economy of that size is why the California bar carries so much Longshore and Harbor Workers’ Compensation experience, and that experience is the foundation a Defense Base Act claim stands on. The federal machinery keeps a West Coast home to match: the U.S. Department of Labor’s San Francisco district office, District 13 of the Division of Longshore and Harbor Workers’ Compensation, administers Defense Base Act claims arising across the Pacific and much of Asia and covers northern California, Arizona, and Nevada. For a contractor filing from California, a lawyer at ease in both that federal office and the state’s maritime landscape holds a quiet practical edge (the kind that shows up in how fast a file moves, not in a brochure).

Common Defense Base Act Injuries Among California Contractors

The injuries that reach a Defense Base Act lawyer are not the injuries of an ordinary job site, because the work is not ordinary. Contractors are sent into conditions a domestic assignment rarely produces, whether they left California as aircraft technicians, security personnel, or logistics hands, and the harm that follows them home runs a wide range (from the sudden and violent to the slow and cumulative).

The physical claims are the most familiar. Blast exposure from explosive devices can leave traumatic brain injury, hearing loss, and severe orthopedic and internal damage. Vehicle collisions, among the more common causes of contractor injury abroad, produce spinal damage, head trauma, and fractures. Falls, equipment strikes, and electrical accidents are routine on overseas construction and logistics sites, and orthopedic wear, torn rotator cuffs, herniated discs, and worn-out knees, accumulates from hauling heavy gear over rough ground in extreme heat. Occupational illness counts as well. Contractors exposed to burn pits, the open-air waste sites once common at overseas installations, have developed respiratory disease and certain cancers tied to the smoke, and heat illness, infectious disease, and chemical exposure are recognized under the Act too.

The psychological claims are just as disabling and far more often contested. Post-traumatic stress disorder is the condition most commonly claimed by contractors who lived through combat, explosions, or sustained threat, and it can bring intrusive memories, hypervigilance, and an inability to concentrate; depression, anxiety, and adjustment disorders frequently travel with it. These conditions qualify for medical treatment and disability compensation under the Act, yet a carrier will often argue the symptoms predate the deployment or cannot be pinned to a single event, and a psychological claim denied or delayed on that reasoning is a familiar problem. None of this is aimed at any firm above; it is the ground every one of them is retained to cross.

How to Choose a Defense Base Act Lawyer in California

Before signing an agreement, a California contractor can put a handful of plain questions to any firm, on this list or off it:

• Ask how many Defense Base Act claims the firm has actually carried, and whether it has argued one to a decision before an administrative law judge rather than settling every file.
• Find out who handles the day-to-day work, the named lawyer or a case team, and how the office keeps a client informed from overseas or a distant time zone.
• Ask what languages the office can work in, since the contractor workforce is drawn from many countries.
• Get the fee arrangement in writing. On a Defense Base Act claim the attorney’s fee is the carrier’s responsibility, not a share of the worker’s benefits, and a firm should be able to say so plainly.
• Favor a firm fluent in the federal Longshore system that runs through the San Francisco district office over a general injury practice that takes one of these claims a year.

Frequently Asked Questions

What does a Defense Base Act lawyer do?

These lawyers act for civilian contractors hurt overseas on U.S. government contracts. The work runs from filing the claim and building the medical and wage record, to dealing with the carrier, and, where the claim is contested, taking it to a hearing before one of the Department of Labor’s administrative law judges and, on review, the Benefits Review Board.

Who does the Defense Base Act cover?

Coverage reaches civilians employed beyond U.S. borders on government contracts tied to the military, national defense, or public works, a group that takes in people stationed at American bases abroad and those working for welfare-service organizations that support the armed forces. Citizenship is not the test, so qualifying foreign nationals fall within it too.

How long does a California contractor have to file a claim?

The employer must be told in writing within thirty days, and the formal claim on Form LS-203 generally within a year of the injury or the last compensation payment, or within two years for an occupational illness, running from the diagnosis that ties it to the work. A missed date can end a claim, so both are worth confirming early.

What does a Defense Base Act lawyer cost?

For the contractor, usually nothing out of pocket. The Act places the attorney’s fee on the employer or its carrier once benefits are secured, and it forbids counsel from taking any percentage of the claimant’s compensation, so the money that pays the lawyer never comes out of the worker’s award.

What benefits does the Defense Base Act pay?

The Act funds reasonable and necessary medical care for the injury, with the worker able to select an authorized treating physician, and disability pay set at roughly two-thirds of the average weekly wage within statutory limits, in temporary or permanent and partial or total forms. Surviving dependents receive death benefits and burial costs. Pain and suffering is not compensated.

Where are California Defense Base Act claims handled?

The Department of Labor’s Office of Workers’ Compensation Programs administers them, and a California claimant’s file sits with the San Francisco district office, District 13, which handles Defense Base Act claims arising across the Pacific and much of Asia. A contested claim moves from an informal conference to an administrative law judge, then the Benefits Review Board and a federal court of appeals.

What is the zone of special danger?

It is a rule under the Defense Base Act by which an injury can be covered even though it happens away from the job itself. A remote or dangerous overseas posting carries risks that daily life at home does not, so harm that occurs during downtime, recreation, or a routine errand may still count as arising from the assignment.