Serious and Willful Misconduct in California Workers’ Comp (2026 Guide)

In California, when a work injury is caused by your employer’s serious and willful misconduct, the workers’ compensation you are otherwise owed is increased by one-half, plus up to $250 in costs and expenses (Labor Code 4553). You do not file a separate lawsuit to get it. You ask the Workers’ Compensation Appeals Board (WCAB) for the increase in your workers’ comp case, and you generally have 12 months from the date of injury to do it (Labor Code 5407).

That deadline is strict. Unlike the regular workers’ comp filing deadline, it is not extended because you are receiving benefits or because you already filed your claim. The increase is also paid by the employer itself: California law bars insurance companies from insuring it (Insurance Code 11661). That is one reason employers fight these claims hard.

This guide covers what counts, who must be involved, how Cal/OSHA violations fit in, what the increase is worth, how the petition works, and when you can sue outside workers’ comp.

What is serious and willful misconduct in California workers’ comp?

California workers’ comp is a no-fault system. You get medical care, temporary disability and permanent disability benefits whether or not anyone was careless. A serious and willful misconduct claim (often called an “S&W” claim) is the exception: it is the one place in the comp system where the employer’s fault changes how much you receive.

The bar is high. Ordinary carelessness is not enough, and even very poor safety practices may not qualify. In general, the WCAB looks for conduct showing that the employer:

• knew about a dangerous condition, or the danger was obvious;
• knew, or should have known, that the probable result was serious injury; and
• deliberately failed to take reasonable steps to fix it, showing a reckless disregard for workers’ safety.

Think of it as the difference between a mistake and a choice. A machine guard that breaks without warning is usually an accident. A machine guard that management removed to speed up production, after workers complained about it, is the kind of fact pattern S&W claims are built on.

By the numbersOne-half

Who has to commit the misconduct?

This is where many claims are won or lost. Labor Code 4553 applies only when the misconduct is by the employer itself or by certain people at the top of the company:

Type of employer	Whose misconduct counts (Labor Code 4553)
Any employer	The employer, or its managing representative
Partnership	A partner, or a managing representative or general superintendent
Corporation	An executive, managing officer, or general superintendent

A careless coworker, or a front-line lead who is not a managing representative, usually is not enough by itself. The evidence has to tie the decision, or the knowing failure to act, to someone the statute lists. That often means internal emails, safety meeting notes, prior complaints and witness testimony.

Watch: injured at work in California

Our attorneys explain what your employer must do after a work injury, and what to do in the first 24 hours to protect your claim.

Safety order violations: the Labor Code 4553.1 test

Many S&W claims are based on a violation of a Cal/OSHA safety order, such as rules on machine guarding, lockout/tagout, fall protection, trenching or confined spaces. When the claim is based on a safety order violation, Labor Code 4553.1 says the WCAB must specifically find all three of the following:

1. How the order was violated. The specific manner in which the safety order was broken.
2. Causation. That the violation proximately caused the injury or death, and the specific way it did.
3. Knowledge or reckless disregard. Either the safety order and the conditions that made it apply were known to, and violated by, a particular named person (the employer or one of the managers listed in Section 4553), or the condition was obvious, created a probability of serious injury, and the failure to correct it amounted to reckless disregard for the probable consequences.

The third element is often the hardest. It is why the name of the specific manager who knew about the hazard matters so much.

Cal/OSHA citations as evidence

If Cal/OSHA inspected after your injury, its file can be some of the most useful evidence in an S&W case: inspection notes, photographs, interview summaries, citations and any earlier citations for the same hazard. Under Labor Code 6304.5, a Cal/OSHA citation generally cannot be used as evidence in a personal injury case, but that rule has an exception for cases between an employee and his or her own employer.

• A citation helps, but it is not required. You can prove S&W with other evidence, and a citation alone does not automatically prove it.
• Cal/OSHA’s labels are not the WCAB’s test. Cal/OSHA classifies some violations as “serious” or “willful,” but those are workplace safety categories. The WCAB still applies the workers’ comp standard described above.
• You can ask for an inspection. If a hazard is still there, you can file a workplace safety complaint with Cal/OSHA. General information is on the Cal/OSHA website.

Cal/OSHA does not inspect every injury, so preserve your own evidence early.

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Examples of conduct that can support an S&W claim

Every case turns on its own facts, but these situations come up often in serious workplace injuries, including crush injuries and amputations:

• Removing or disabling a machine guard, interlock or emergency stop to keep production moving.
• Telling workers to skip lockout/tagout before clearing a jam or servicing equipment.
• Sending workers onto a roof, scaffold or lift without fall protection after the hazard was pointed out.
• Ignoring repeated reports of electrical shocks, gas leaks or failing brakes on equipment.
• Keeping a hazard in place after a prior citation, near miss or earlier injury from the same condition.
• Putting untrained workers on dangerous equipment despite knowing they had no training.

What usually does not qualify: a one-time accident with no warning signs, a hazard management did not know about and had no reason to know about, or a coworker’s own mistake.

By the numbers12 months

How much is the serious and willful increase worth?

Labor Code 4553 increases “the amount of compensation otherwise recoverable” by one-half, together with costs and expenses up to $250. Labor Code 3207 defines “compensation” broadly as every benefit or payment the workers’ comp laws give an injured worker or, after a death, the worker’s dependents. In practice, the increase is figured on the benefits in your case, such as temporary disability, permanent disability or death benefits. Exactly which items go into the calculation can be disputed, so have the math checked.

💡 Example: Maria’s right hand is crushed when a press with its guard removed cycles unexpectedly. Assume the compensation in her case totals $60,000. If the WCAB finds serious and willful misconduct, the increase is one-half of that, or $30,000, plus up to $250 in costs and expenses. (Simplified and hypothetical. Real cases depend on the benefits actually awarded.)

• The employer pays, not the insurer. Insurance Code 11661 says an insurer may not insure an employer against the extra compensation for serious and willful misconduct. An insurer may cover the cost of defending the claim.
• It is still workers’ comp. The S&W increase does not add pain and suffering or punitive damages, which workers’ comp does not pay.

A related rule, Labor Code 4557, increases compensation by 50% when an employee under 16 was illegally employed when hurt, with some exceptions.

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Can my employer cut my benefits for my own misconduct?

The rule runs both ways. Under Labor Code 4551, if the injury was caused by the injured worker’s own serious and willful misconduct, compensation is reduced by one-half. But the reduction does not apply when:

• the injury results in death;
• the injury results in permanent disability of 70 percent or more;
• the injury was caused by the employer’s failure to follow any law or Cal/OSHA safety order about workplace safety; or
• the injured employee was under 16 at the time of injury.

The reduction is not valid until the WCAB decides the issue in its findings and award (Labor Code 4552). An adjuster cannot simply cut your checks in half on its own.

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Deadline to file a serious and willful petition

Claim	Deadline	Statute
Serious and willful misconduct of the employer	12 months from the date of injury. Not extended by payment of benefits, an agreement to pay, or filing your regular claim.	Labor Code 5407
Regular medical and disability benefits	Generally one year from the date of injury, or from the last benefit paid or provided	Labor Code 5405
New and further disability	Within five years from the date of injury. This does not extend the S&W deadline.	Labor Code 5410

Because the S&W deadline runs from the date of injury, a worker who is still in treatment and still receiving checks can lose the claim without realizing it. If your employer ignored a known danger, talk to a lawyer well before the one-year mark.

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How the S&W petition works before the WCAB

A serious and willful claim is part of your workers’ comp case. In general, the process looks like this:

1. Open a WCAB case. If you do not already have an Application for Adjudication of Claim on file, one is filed for your injury.
2. File the S&W petition. The petition is filed with the WCAB and served on the employer and its insurer. It should spell out the specific facts: what the hazard was, who knew about it, what they did or failed to do, and how it caused the injury.
3. The employer defends separately. Because the employer, not the insurer, pays the increase, the employer often has its own attorney on this issue.
4. Discovery and evidence. Both sides gather records, take depositions of managers and coworkers, and obtain any Cal/OSHA file.
5. Hearing and decision. The claim goes through the WCAB process, which can include a mandatory settlement conference and trial before a workers’ comp judge. You must prove the claim by a preponderance of the evidence (Labor Code 3202.5), not by “clear and convincing” evidence.

Your regular benefits should keep moving while the S&W issue is litigated. The S&W claim is about the extra amount on top.

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S&W vs. suing your employer outside workers’ comp

Workers’ comp is usually your only remedy against your employer (Labor Code 3602). An S&W petition does not change that. It raises your comp benefits but does not open the door to a civil lawsuit. A civil case against the employer is allowed only in narrow situations:

Option	When it applies	Where
S&W petition	Injury caused by the employer’s serious and willful misconduct	WCAB (workers’ comp case)
Willful physical assault	Injury or death caused by a willful physical assault by the employer (Labor Code 3602(b)(1))	Civil court
Fraudulent concealment	Employer fraudulently concealed the injury and its connection to the job, making it worse; damages are limited to the aggravation (3602(b)(2))	Civil court
Employer’s defective product	Injury caused by a defective product the employer made and sold to an independent third person, which a third person then provided for your use (3602(b)(3))	Civil court
Power press guard	Employer knowingly removed, or knowingly failed to install, a manufacturer-required point-of-operation guard on a power press, and specifically authorized it knowing it created a probability of serious injury or death (Labor Code 4558)	Civil court
Uninsured employer	Employer failed to carry workers’ comp insurance (Labor Code 3706)	Civil court

Separately, you may have a third-party claim against someone other than your employer, such as a machine manufacturer or a contractor that controlled the site. Our guide to the exclusive remedy rule explains these limits in more detail.

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What to do if you think your employer’s misconduct caused your injury

1. Report the injury in writing and get medical care. Your workers’ comp claim comes first.
2. Write down what you know while it is fresh: the hazard, who knew about it, prior complaints, near misses and what managers said.
3. Save evidence. Keep photos, texts, emails, training records and the names and phone numbers of coworkers who saw the hazard.
4. Find out whether Cal/OSHA was called, and consider a safety complaint if the hazard is still there.
5. Mark the 12-month deadline from your date of injury on your calendar.
6. Talk to a workers’ comp attorney early. S&W claims take investigation.

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Frequently asked questions

Is a serious and willful misconduct claim the same as suing my employer?

No. It is a petition in your workers’ comp case before the WCAB. It increases your comp benefits by one-half but adds no pain and suffering damages. Civil suits against an employer are allowed only in narrow cases (Labor Code 3602(b), 4558, 3706).

How long do I have to file a serious and willful petition in California?

Generally 12 months from the date of injury (Labor Code 5407). Receiving benefits or filing your regular claim does not extend that deadline.

Does the insurance company pay the extra 50%?

No. Insurance Code 11661 bars insurers from insuring an employer against the S&W increase, so the employer pays it. An insurer may cover the employer’s defense costs.

Do I need a Cal/OSHA citation to win?

No. A citation can be strong evidence, but S&W can be proven with other evidence, and a citation does not automatically prove it. When the claim rests on a safety order violation, the WCAB must make the findings Labor Code 4553.1 requires.

Can my employer reduce my benefits by saying I was reckless?

Only if the WCAB finds the injury was caused by your own serious and willful misconduct (Labor Code 4551 and 4552). The reduction does not apply in death cases, when permanent disability is 70% or more, when the employer’s safety violation caused the injury, or when the worker was under 16.

Can I be fired for filing an S&W claim?

California law prohibits discrimination against workers for filing a workers’ comp claim. If you were punished for pursuing your claim, read about Labor Code 132a retaliation claims.

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