Employers can be financially responsible when carbon monoxide exposure happens on the job, but in Maryland, that usually means workers’ compensation rather than a standard negligence lawsuit against the employer.

If the exposure occurred during work and caused a compensable injury or occupational illness, the employee may be entitled to benefits even without proving that the employer was careless.

That distinction matters.

A one-time boiler failure in a Baltimore warehouse may be handled differently from repeated exposure caused by a ventilation problem that continued for months. The facts surrounding the exposure can determine whether the claim is more likely to be an accidental workplace injury, an occupational disease, or a case involving another responsible company.

In a recent example in August 2025, a carbon monoxide leak at the Ashore Resort and Beach Club in Ocean City was traced to a ventilation problem with the boiler. Eighteen people were evaluated for exposure, and four employees working near the boiler room were taken to a hospital.

An incident like that can raise several legal questions at once. Who maintained the boiler? Who inspected the ventilation system? Was an outside contractor involved? And which benefits are available through workers’ compensation?

That’s why you need a carbon monoxide exposure lawyer in your corner.

Understanding Employer Liability for Carbon Monoxide Exposure

Employer liability for carbon monoxide exposure in Maryland generally runs through the workers’ compensation system when the injury arises out of employment. Employees usually don’t have to prove ordinary negligence in order to pursue benefits for a covered workplace injury. That’s one of the main purposes of workers’ compensation.

The system may apply to carbon monoxide poisoning at work involving:

• Boilers
• Furnaces
• Portable generators
• Gas-powered equipment
• Vehicle exhaust
• Industrial heaters
• Defective ventilation systems
• Enclosed workspaces

Maryland also generally treats workers’ compensation as an exclusive remedy against an insured employer. That means an employee typically can’t file a separate lawsuit against their employer because maintenance was poor or a safety mistake occurred.

There are exceptions, but they’re limited. So, the first legal question usually isn’t, “Was my employer negligent?” It’s, “Which compensation system applies?”

Common Sources of Carbon Monoxide in Industrial Workplaces

Carbon monoxide exposure in the workplace often starts with combustion equipment or poor ventilation, but the legal importance comes from identifying who owned, installed, repaired, and operated the equipment involved.

A factory may own the building, but an outside HVAC company may have installed the ventilation system. A separate contractor might service the boiler. Another company may have rented the generator. Suddenly, one exposure event involves several businesses.

Common workplace sources include equipment such as forklifts, boilers and furnaces, generators, commercial cooking equipment, faulty exhaust systems, and poor workplace ventilation. The source matters because it may point to a third-party claim.

Workers’ compensation may cover your employment-related injury, while another company might still face liability for causing the dangerous condition in the first place. That possibility shouldn’t be overlooked.

OSHA Regulations and Maryland Safety Standards for Air Quality

OSHA carbon monoxide standards place limits on workplace exposure, and Maryland employers must also comply with applicable state occupational safety requirements.

These rules can become important evidence when a worker is exposed because of poor ventilation, defective equipment, or inadequate monitoring. For general industry, OSHA’s permissible exposure limit for carbon monoxide is 50 parts per million averaged over an eight-hour workday. Maryland also operates its own occupational safety program through the Maryland Occupational Safety and Health (MOSH).

That means industrial air quality regulations may matter in a workplace exposure case, and while a safety violation doesn’t automatically decide a workers’ compensation claim, it can still help explain what went wrong.

In third-party cases, those same records may become even more important.

How to File a Workers’ Compensation Claim for Toxic Exposure

Workers’ compensation for carbon monoxide inhalation usually starts with reporting the exposure, documenting the source, and filing a claim with the Maryland Workers’ Compensation Commission.

The process can be more complicated if the exposure developed gradually rather than during one obvious event.

The legal steps usually include:

1. Report the exposure. Tell your employer when and where the incident happened and create a written record.
2. Identify the source. Document the boiler, generator, vehicle, heater, ventilation system, or other equipment involved.
3. Get medical documentation. Your medical records should connect the condition to a specific workplace exposure.
4. Preserve employment records. Work schedules, incident reports, coworker statements, and maintenance documents may help establish where and when the exposure occurred.
5. File the claim. A Maryland workers’ comp attorney can help determine whether the case should be treated as an accidental injury, an occupational disease, or another type of compensable claim.

Occupational claims may require a closer connection between the worker’s condition and the job’s hazards. That’s where documentation really matters.

Third-Party Liability Beyond Your Employer

Third-party liability may allow an injured worker to pursue compensation beyond workers’ compensation when another company helped cause the carbon monoxide exposure.

This is often the part of the case that gets missed.

Possible third parties may include:

• HVAC contractors
• Boiler repair companies
• Equipment manufacturers
• Property owners
• Property managers
• General contractors
• Generator manufacturers
• Equipment rental companies

Imagine an outside company improperly repairs a boiler exhaust system.

The worker may receive workers’ compensation benefits through the employer while also pursuing a separate negligence claim against the contractor. Those claims can cover different categories of damages.

Workers’ compensation provides statutory benefits. A third-party lawsuit may allow broader recovery, although the workers’ compensation insurer may have reimbursement rights if the worker later receives money from another defendant.

That’s where toxic litigation can overlap with workers’ comp.

Legal Steps to Take After Carbon Monoxide Exposure at Work

The most important legal steps after workplace carbon monoxide exposure involve preserving evidence before equipment gets repaired and everyone starts arguing about responsibility.

A boiler gets serviced. A ventilation problem gets corrected. A generator gets removed. Maintenance logs get updated.

Once that happens, understanding what existed at the time of exposure can become harder.

Useful legal steps include:

1. Submitting a written incident report.
2. Keeping copies of all employer communications.
3. Identifying any of your coworkers who were exposed.
4. Taking photos of equipment and work areas when possible.
5. Preserving maintenance and ventilation records.
6. Finding out if outside contractors serviced or maintained the equipment.
7. Evaluating workers’ compensation and third-party liability separately.

Filing a workers’ compensation claim doesn’t necessarily mean the legal investigation should stop with your employer.

GDH Law Advocates for Work Injury Victims

Employer liability for carbon monoxide exposure in Maryland usually starts with workers’ compensation, but the legal investigation shouldn’t automatically end there.

The way that your exposure happened can determine whether a claim involves only the employment relationship or also reaches outside contractors, property owners, or equipment manufacturers.

At GDH Law, we understand that you may have a straightforward workers’ compensation claim, while another company shares responsibility for creating the dangerous condition.

That’s why we take the strongest legal approach and look for both.

Our Maryland workers’ comp attorneys can help you pursue available benefits while also investigating whether workplace toxic exposure laws support a separate claim against a contractor, manufacturer, property owner, or another third party.

Contact us today and let’s find out.