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Commercial Diving · The Bends

Decompression Sickness (The Bends): Legal Claims

The bends can disable or kill a commercial diver, and it is almost always preventable. When decompression sickness follows an unsafe dive, injured divers and their families may have real legal claims. Here is how those claims work, and what your legal status changes.

By Michael Mangione, Editor · Last reviewed: August 4, 2026 · 10 min read
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The bends and your rights

Why decompression sickness so often becomes a legal claim.

The Injury
Nitrogen bubbles. Too-fast ascent forms bubbles that cause pain, nerve damage, or worse.
Preventable
Rules exist. Proper tables, stops, and chambers make it rare, so a case often signals a failure.
Your Status
Seaman or not. It decides whether you have Jones Act claims or Longshore coverage.
The Standards
OSHA rules apply. Skipping a required chamber or procedure is strong evidence of negligence.
Editorial content, not medical or legal advice. This guide explains the legal claims that can follow decompression sickness. It is not medical guidance, and whether you have a claim depends on your facts. Offshore Injury Help is not a law firm and no attorney-client relationship is formed here. Free case review →
Key Takeaways
  • Decompression sickness, the bends, comes from nitrogen bubbles when a diver ascends too fast, and it can be disabling or fatal.
  • It is a medical emergency treated by recompression; seek emergency care immediately if it is suspected.
  • In commercial diving it is largely preventable, so a case often points to a rushed ascent, skipped stop, or missing chamber.
  • A diver who is a seaman has Jones Act and unseaworthiness claims; one who is not may have Longshore Act coverage.
  • OSHA's diving standard requires decompression procedures and an on-site chamber for many dives; violations support negligence.
165 FSW an on-site chamber
must recompress to
2 Legal paths: Jones Act
or Longshore Act
3 yr Jones Act deadline
to file suit
$0 Cost of a
case review

In this guide

  1. 01What decompression sickness is
  2. 02How it happens in diving
  3. 03Why it is usually preventable
  4. 04Your legal status as a diver
  5. 05Jones Act and unseaworthiness
  6. 06What employers must do
  7. 07The long-term harm
  8. 08What to do next
The silhouette of a diver underwater, representing decompression sickness in commercial divers
The Condition

Gas bubbles where they should not be.

1. What decompression sickness is

Quick Answer

Decompression sickness (the bends) happens when a diver ascends too fast and dissolved gas, mainly nitrogen, forms bubbles in the blood and tissues. It can cause joint pain, neurological injury, paralysis, and in severe cases death. It is a serious, sometimes disabling condition.

Under pressure at depth, a diver's body absorbs inert gas. If the diver comes up too quickly, that gas cannot be exhaled in time and instead forms bubbles, the same way a shaken soda fizzes when opened. Those bubbles are what cause decompression sickness (the bends), long known to divers as the bends. The effects range from aching joints to spinal cord damage. For the broader picture of commercial diving injuries, this is one of the most feared.

Why It Is Called The Bends Nitrogen Bubbles

Rapid ascent lets dissolved nitrogen form bubbles in the body, producing the joint pain, neurological symptoms, and worse that define the condition.

A Medical Emergency First

Decompression sickness is a medical emergency. The recognized treatment is prompt recompression in a hyperbaric chamber. If you or a coworker may have the bends, seek emergency medical care immediately. This article addresses legal claims, not medical treatment.

✓

Bottom line: Decompression sickness, the bends, is caused by nitrogen bubbles from too-rapid ascent. It can disable or kill, and it is always a medical emergency requiring immediate care.

A diver entering the water on a dive, representing how decompression sickness occurs in commercial work
The Cause

Usually a shortcut, not bad luck.

2. How it happens in commercial diving

Quick Answer

Most commercial cases trace to a specific failure: an ascent that was too fast, a skipped decompression stop, a wrong dive table, a bad gas mixture, or equipment that failed. These are the details that decide whether a claim exists.

Commercial divers do not get the bends at random. It usually follows a departure from safe procedure. Understanding the cause is the first step in understanding whether someone was at fault.

  • Ascending too quickly, including emergency ascents forced by equipment or supply problems
  • Skipped or shortened decompression stops, often to save time or gas
  • Wrong dive tables or profiles, miscalculating the depth-time exposure
  • Improper gas mixtures, or running low on breathing gas at depth
  • No working recompression chamber on site to treat symptoms fast
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Bottom line: The bends in commercial diving usually follows a specific failure, a rushed ascent, a skipped stop, a bad gas mix, or missing equipment, not mere bad luck. That failure is where liability begins.

A diver in a wetsuit in deep blue water, representing that decompression sickness is largely preventable
The Key Point

Following the rules, it is rare.

3. Why it is usually preventable

Quick Answer

When proper decompression schedules and equipment are used, the bends is uncommon. That is why a case of decompression sickness (the bends) so often points to negligence, a cut corner, a broken rule, or a missing safeguard.

Decompression science is well established. Dive tables, staged ascents, and recompression chambers exist precisely to prevent this injury, and when they are used correctly the risk is low. So when a working diver does get decompression sickness (the bends), the question is rarely whether something went wrong. It is usually what went wrong, and who was responsible for it.

The Legal Significance

Preventability matters legally. If your employer or another party ignored a known safety rule and that caused your injury, that failure can be the foundation of a negligence or unseaworthiness claim. This is general information, not legal advice.

✓

Bottom line: The bends is largely preventable with proper procedures and equipment. When it happens anyway to a working diver, a cut corner or missing safeguard is often the reason, and that can support a claim.

Two divers working together underwater, representing how a diver's legal status shapes the claim
The Threshold

Seaman or not decides everything.

4. Your legal status as a diver

Quick Answer

Your rights depend on your legal status. A commercial diver assigned to a vessel is often a seaman, with Jones Act and unseaworthiness claims. A diver who is not a seaman may instead be covered by the Longshore Act.

The most important legal question is what you count as. Many commercial divers work from a dive support vessel and qualify as seamen, which opens the strongest set of claims. Others, working from fixed platforms or shore, may fall under the Longshore Act instead. Sorting this out is fact-specific, and it is the subject of whether commercial divers are covered by the Jones Act.

Landmark Case

Chandris, Inc. v. Latsis

515 U.S. 347 (1995) · U.S. Supreme Court

The Supreme Court set the test for seaman status: a worker must have a connection to a vessel in navigation that is substantial in both duration and nature. For a commercial diver, whether that test is met turns on the facts of the assignment, and it decides which claims are available.

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Bottom line: Your status controls your rights. A diver who is a seaman has Jones Act and unseaworthiness claims; one who is not may have Longshore Act coverage. The Chandris test decides which.

Hurt by the bends on a commercial dive?

Whether you are a seaman or a longshore worker changes everything about your claim, and the difference is not always obvious. A free, confidential review connects you with a maritime attorney who can sort out your status and your options.

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A diver moving through open water, representing Jones Act and unseaworthiness claims for divers
The Claims

Negligence and an unfit vessel.

5. Jones Act and unseaworthiness claims

Quick Answer

A diver who is a seaman can sue the employer for negligence under the Jones Act and the vessel owner for unseaworthiness. A dive vessel lacking a working chamber, adequate gas, or trained supervision may be unseaworthy.

For a seaman-diver, two powerful claims exist. The Jones Act allows a negligence suit against the employer, and general maritime law allows an unseaworthiness claim against the vessel owner when the vessel or its equipment is not reasonably fit. A dive support vessel without a functioning recompression chamber, sufficient breathing gas, or a competent dive supervisor can be found unseaworthy. These claims are central to commercial diving injuries.

The Statute Itself

46 U.S.C. Section 30104: The Jones Act

A seaman injured in the course of employment or, if the seaman dies from the injury, the personal representative of the seaman may elect to bring a civil action at law, with the right of trial by jury, against the employer.

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Bottom line: A seaman-diver can pursue Jones Act negligence against the employer and unseaworthiness against the vessel owner. A dive vessel missing a chamber, gas, or supervision may be unseaworthy.

Divers descending together into the water, representing the safety standards employers must meet
The Standards

The rules employers must follow.

6. What employers are required to do

Quick Answer

Commercial diving is heavily regulated. OSHA's diving standard requires decompression procedures, trained supervision, and a recompression chamber on site for many dives. Ignoring these rules is strong evidence of negligence.

Employers do not get to improvise. Federal rules set out how commercial dives must be planned and equipped, including when a recompression chamber must be present at the dive location. When an employer skips a required safeguard and a diver is hurt, that violation supports a negligence claim, and can also help show who else is at fault, as explained in who can be liable for an offshore rig injury.

The Regulation Itself

29 CFR 1910.423(c)(1): OSHA commercial diving standard

A decompression chamber capable of recompressing the diver at the surface to a minimum of 165 fsw (6 ATA) shall be available at the dive location for: (i) Surface-supplied air diving to depths deeper than 100 fsw and shallower than 220 fsw ...

Was a required safety rule ignored on your dive? A free, confidential review connects you with a maritime attorney who can identify the violations that matter.
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✓

Bottom line: OSHA's commercial diving standard requires decompression procedures, trained supervision, and an on-site chamber for many dives. A violation that causes injury is strong evidence of negligence.

Deep blue water fading into darkness, representing the lasting harm decompression sickness can cause
The Stakes

Damage that can end a career.

7. The long-term harm that follows

Quick Answer

The bends can leave lasting damage: chronic pain, neurological deficits, and dysbaric osteonecrosis, a bone death from repeated exposure. For a career diver, that can mean the end of the work and lasting disability.

Serious decompression sickness (the bends) does not always fully resolve. Some divers are left with permanent neurological injury, and repeated exposure can cause dysbaric osteonecrosis, where bone tissue dies. For someone whose livelihood depends on diving, these outcomes can be career-ending and life-altering, which is exactly why a full and fair recovery matters. The value of any claim depends on the specific harm, not on any average.

Why Documentation Matters

The lasting nature of these injuries is why medical records and dive logs are so important. They connect the injury to the dive and show the full extent of the harm over time. No attorney-client relationship is formed by reading this.

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Bottom line: The bends can cause chronic pain, permanent neurological injury, and bone death from repeated exposure. For a career diver these harms can be permanent, which is why documenting them fully matters.

A diver in a black wetsuit in open water, representing the steps to take after decompression sickness
Your Next Move

Care first, then protect the claim.

8. What to do next

Quick Answer

Get emergency medical care first. Then, to protect a claim for decompression sickness (the bends), preserve your dive logs and gas records, report the injury, note who supervised the dive, and speak with a maritime attorney before deadlines run.

Your health comes first, always. Once you are safe and treated, the goal is to preserve the evidence that a rushed or unsafe dive caused the injury, before those records disappear.

  • Get and keep your medical records, including the recompression treatment you received
  • Preserve the dive logs and profiles, plus gas records and equipment maintenance logs
  • Write down who supervised the dive and what decompression schedule was used
  • Report the injury in writing and keep a copy for yourself
  • Confirm your deadline, since the Jones Act and other systems have strict time limits

Because status and deadlines are technical, a offshore accident attorney can tell you which claims you have and how strong they are. For the mechanics, see how commercial diving injury claims work. Offshore Injury Help is not a law firm, this is not legal advice, and no attorney-client relationship is formed here.

Ready to find out what claims you may have? A free, confidential review connects you with a vetted maritime attorney, with no obligation.
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✓

Bottom line: Get emergency care first. Then preserve dive logs, gas records, and medical records, note who supervised, report the injury, and confirm your deadline with a maritime attorney.

For Verification

Sources & Authorities

The claims described here rest on federal maritime law and the OSHA diving standard. Verify our work at the official sources below.

Law & Cases

Diving Regulations

Editorial standard: This guide is reviewed quarterly and updated whenever the diving-injury rules change. Last reviewed August 4, 2026, by Michael Mangione, Editor. This article is educational information, not medical or legal advice, and no attorney-client relationship is formed. It does not diagnose or treat any condition. For your situation, connect with a licensed maritime attorney via our free case review.

Behind This Article

Our Editorial Standards

How this guide is researched, reviewed, and kept current. Transparency about what we are and what we are not.

01

Primary sources only

Every legal rule in this article cites a primary federal source: the U.S. Code, the Code of Federal Regulations, or Supreme Court opinions. All citations link to free public databases (Cornell Law Legal Information Institute and Justia). You can verify everything we say.

02

Quarterly review

This guide is reviewed every quarter and updated whenever the governing rules change. Our editor tracks the law protecting commercial divers, including Jones Act seaman status, the general maritime unseaworthiness doctrine, and the OSHA commercial diving standards that govern decompression and recompression. The Last reviewed date at the top reflects the most recent pass.

03

Editorial, not legal advice

Our editor is not a practicing attorney. This guide is researched journalism on the legal claims available for decompression sickness, not medical or legal advice about your situation, and no attorney-client relationship is formed. For your specific situation, talk to a licensed maritime attorney through our free case review.

04

How we vet attorneys

Attorneys in our network are vetted before we connect you: maritime specialty concentration, federal court admission, documented maritime trial experience, current state bar standing, and clear contingency-fee disclosure. We do not refer to generalist personal injury lawyers.

Michael Mangione, editor of Offshore Injury Help and founder of The Mangione Group, headshot

About the Editor

Michael Mangione

Michael is the founder of The Mangione Group, a specialty legal-services firm focused on attorney intake, lead qualification, and connecting injured workers with vetted specialty attorneys. He has built referral and intake systems across high-value legal niches including maritime injury, nursing home abuse, and trucking accidents. He is not a practicing attorney. His expertise is in the editorial side of legal information and the operational side of how injured workers find the right legal help, which is what this guide is about.

LinkedIn · The Mangione Group

Last reviewed: August 4, 2026 (initial publication, comprehensive review against the Jones Act (46 U.S.C. Section 30104), the Supreme Court seaman-status decision in Chandris v. Latsis (515 U.S. 347), and the OSHA commercial diving standard (29 CFR 1910.423)). Next review: October 2026 or sooner upon material developments.

Frequently Asked Questions

Common questions about decompression sickness claims

Educational information only. This is not medical or legal advice, it does not diagnose or treat any condition, and no attorney-client relationship is formed. For your case, connect with a vetted maritime attorney via the free case review above.

What legal claims can follow decompression sickness (the bends)? +
It depends on your status. A commercial diver who is a seaman can generally bring a Jones Act negligence claim against the employer and an unseaworthiness claim against the vessel owner, plus maintenance and cure. A diver who is not a seaman may be covered by the Longshore Act. The claim usually turns on a preventable failure, such as a rushed ascent or a missing recompression chamber.
Is decompression sickness usually someone's fault? +
Often, yes, in a legal sense. The bends is largely preventable with proper dive tables, decompression stops, gas mixtures, and an on-site chamber. When a working diver gets it anyway, the cause is frequently a cut corner or a broken safety rule, which can support a negligence or unseaworthiness claim. Whether fault existed depends on the specific facts.
Are commercial divers considered seamen under the Jones Act? +
Many are, but not all. A diver assigned to a vessel in navigation, such as a dive support vessel, may qualify as a seaman under the Chandris test if the connection is substantial in duration and nature. A diver working from a fixed platform or shore may not. Because it is fact-specific, it is worth having the question reviewed.
What must an employer do to prevent the bends? +
OSHA's commercial diving standard requires safe dive planning, correct decompression procedures, trained supervision, and, for many dives, a recompression chamber available at the dive location. The Coast Guard also regulates commercial diving. When an employer skips a required safeguard and a diver is injured, that violation is strong evidence of negligence.
Can I sue if there was no recompression chamber on site? +
Possibly. For many commercial dives, a recompression chamber is required at the dive location, and its absence can be both an OSHA violation and evidence that a vessel was unseaworthy. Whether it supports your specific claim depends on the type of dive and your legal status, which a maritime attorney can assess.
What long-term harm can the bends cause? +
Serious decompression sickness can leave permanent damage, including chronic pain and neurological deficits. Repeated exposure can cause dysbaric osteonecrosis, a death of bone tissue. For a career diver, these outcomes can be disabling and career-ending, which is part of why documenting the full extent of the injury matters.
How long do I have to file a diving injury claim? +
It depends on which system applies. A Jones Act claim generally must be filed within three years, while Longshore Act claims have their own shorter notice and filing rules. Because the deadlines differ and can be short, you should confirm your specific deadline quickly rather than assume.
What should I do first if I have the bends? +
Get emergency medical care immediately; decompression sickness is treated with prompt recompression, and delay can worsen the outcome. Once you are safe, preserve your dive logs, gas records, and medical records, note who supervised the dive, report the injury in writing, and speak with a maritime attorney before any deadline runs.
Does workers' compensation cover a diving injury? +
It depends on your status. A diver who is a seaman is generally not covered by ordinary workers' compensation and instead has Jones Act and maritime remedies. A diver who is a longshore or harbor worker may be covered by the federal Longshore Act, which is a distinct system with its own benefits and rules.
Do I need a lawyer for a decompression sickness claim? +
These claims are technical: they turn on your seaman status, the specific safety failures, the diving regulations, and short deadlines. A maritime attorney can determine which claims you have and how strong they are. Our free case review is a no-obligation way to get your situation looked at by a vetted maritime lawyer.

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