Just Realized Your Pain Is Work-Related? Why the Next 90 Days Matter

Not every workers' comp case starts with a single accident. A huge share of legitimate claims involve injuries that build over months or years — repetitive strain in the wrists and shoulders, chronic back pain from lifting, hearing loss from machinery, lung disease from chemical exposure, knee deterioration from years on concrete floors. The legal system has a name for these: occupational diseases and cumulative trauma injuries.

The catch is the deadline. Workers' comp deadlines don't always run from when the injury "started" — they often run from the date you knew, or reasonably should have known, that your condition was work-related. That's called the discovery rule, and once you cross that threshold, the clock starts. In many states it's short.

If you've recently realized that a long-standing pain, condition, or diagnosis might be tied to your job, this guide explains why the next 90 days matter and what to do with them.

Workers' comp covers a much wider range of conditions than most people realize. The common categories:

Repetitive stress injuries (RSI). Carpal tunnel syndrome, cubital tunnel, tendonitis, trigger finger, De Quervain's tenosynovitis, rotator cuff tears, lateral epicondylitis ("tennis elbow"), medial epicondylitis ("golfer's elbow"). Common in keyboard-heavy office work, assembly line work, food service, dental hygiene, construction, and warehouse jobs.

Cumulative back and spine injuries. Disc degeneration, herniations, chronic lumbar strain, sciatica, spinal stenosis — when caused by years of lifting, bending, twisting, or sustained postures. Common in nursing, construction, warehouse, trucking, and landscaping.

Knee and hip injuries. Cartilage damage, meniscus tears, osteoarthritis, and joint deterioration from years of kneeling, squatting, climbing, or standing on hard surfaces. Common in flooring installation, plumbing, electrical work, and food service.

Occupational hearing loss. Noise-induced hearing loss from long-term exposure to machinery, power tools, sirens, aircraft, or industrial equipment. Common in manufacturing, construction, military service, transportation, and emergency services.

Respiratory and lung disease. Asthma, COPD, silicosis, asbestosis, mesothelioma, hypersensitivity pneumonitis, chemical pneumonitis from years of exposure to dust, fumes, solvents, or particulates. Common in construction, mining, painting, agriculture, firefighting, and chemical manufacturing.

Chemical and toxic exposure. Cancers, neurological disorders, and organ damage linked to long-term workplace exposure to specific substances. Latency periods can run decades.

Mental health conditions in some states. PTSD, anxiety disorders, and stress-related conditions, particularly for first responders, healthcare workers, and trauma-exposed occupations. Coverage varies dramatically by state.

Heart attacks and strokes in some states. Particularly for police, firefighters, and other workers covered by statutory presumptions linking cardiovascular events to job stress and exposures.

For a single-event injury (slipping on a wet floor, getting hit by a falling box), the deadline to report and file generally runs from the date of the accident.

For cumulative and occupational conditions, that doesn't make sense — there's no single accident. So most states use a "discovery rule": the deadline runs from the date the worker knew, or reasonably should have known, that the condition was both serious and work-related.

That phrase has two halves, and both have to be satisfied. Knowing you have wrist pain isn't enough. Knowing you have carpal tunnel syndrome isn't enough. The clock starts when you reasonably should have connected the diagnosis to your job — typically when a doctor tells you, when you read about the condition's known causes, or when you experience a disabling event that forces you to confront the cause.

Practical implications:

• The day you Googled your symptoms, found out they're commonly caused by your job, and recognized the connection — that's a discovery date.
• The day a doctor said "this looks like a work injury" or "have you done a lot of [activity] over the years?" — that's a discovery date.
• The day you couldn't keep working because of the condition and had to look into why — that's a discovery date.

Once any of those happens, the state deadline runs. Some states give 30 days to report after discovery. Some give 90. Some give two years to file. A few have separate, longer windows specifically for occupational diseases.

Across the country, the most common reporting deadline after discovery for cumulative or occupational conditions falls within 30-90 days. A few examples:

• Colorado: 30 days to report occupational disease after manifestation
• Delaware: 1-year filing deadline after diagnosis of occupational disease
• Hawaii: 2-year filing deadline after first symptom of occupational disease
• Maryland: 2 years after disablement for occupational disease
• Many states: 30-90 days to give notice to the employer once you knew or should have known the condition was work-related

Even in states with longer formal filing windows, the employer notice deadlines tend to be shorter. Treating 90 days from discovery as your operating deadline gets most workers safely inside both windows.

Primary care physicians are often the first stop, and that's fine. But for a workers' comp case built on cumulative trauma or occupational disease, you eventually need a clear, written diagnosis from a doctor familiar with occupational medicine — meaning a specialist who can document not just what's wrong with you but specifically how the work activities likely caused it.

What you want in the chart, in writing:

• The specific diagnosis (not "wrist pain" — "bilateral carpal tunnel syndrome confirmed by EMG/NCV")
• The functional limitations (what you can and can't do)
• A causation statement linking the condition to your work activities
• A note that the condition is permanent or expected to be permanent, if applicable

If your treating doctor isn't comfortable writing causation opinions or doesn't know occupational medicine well, you may need a referral. Occupational medicine specialists, physical medicine and rehabilitation (PM&R) physicians, and certain orthopedic surgeons regularly write the kinds of opinions workers' comp cases require.

Cumulative trauma cases are won on the specifics of work activity, often going back years. Insurers will argue the condition is age-related, genetic, or caused by hobbies. Your job is to make the work cause obvious through documentation.

Sit down today and write:

• Every job you've held in the last 10-20 years (longer for occupational disease cases)
• The dates of each job
• A description of the physical demands: what you lifted, how often, how heavy, what postures you held, how long you stood, what you were exposed to, what equipment you used
• Estimates of repetitions per shift if relevant (assembly workers, packers, scanners, typists)
• Any equipment, PPE, or ergonomic accommodations that were or weren't provided
• Any complaints you made to supervisors about pain or discomfort
• Any coworkers who had similar problems

This document becomes the backbone of your testimony and your medical record. The more specific it is, the harder it is to attack.

This is one of the trickiest parts of cumulative trauma cases. If you've worked for the same employer for 20 years, easy. If you've worked for several employers doing similar work, the question of which one to claim against gets complicated.

States handle this differently. Some assign liability to the "last injurious exposure" employer — the most recent one whose work activities contributed to the condition. Some apportion liability among multiple employers. Some have specific rules for occupational diseases that differ from cumulative trauma rules.

What you should do today:

• Report to your current employer if the work that caused the condition is similar to what you've done in past jobs
• Get the names and approximate dates of any previous relevant employers
• Note any breaks in exposure — periods when you weren't doing the same work
• Don't try to figure out the apportionment yourself. That's a legal question with state-specific answers.

A common mistake: realizing a job is causing damage and immediately resigning or transferring to a different role. This can complicate the claim significantly.

In some states, your right to ongoing benefits depends on your wage at the time of claim filing. In others, leaving the job that caused the injury can affect the "last injurious exposure" analysis. In nearly all states, taking a substantially lower-paying job can affect wage replacement benefits in ways that aren't intuitive.

This doesn't mean you should keep working in a job that's harming you. It means you should know the consequences before you act. A short consultation with an attorney before you change jobs is usually free and can save tens of thousands of dollars in benefits.

Once you have a diagnosis linking the condition to your job, give written notice to your employer. Use the same approach as for any other workers' comp injury:

• Written notice (email preferred) to a supervisor, manager, or HR
• Description of the condition, the diagnosis, and the work activities believed to have caused it
• Request that a workers' comp claim be filed and that you be provided claim forms
• Save copies outside of work systems

If the employer refuses to file or stalls (which is more common in cumulative cases than in single-event cases, because the cause is more disputable), file directly with the state workers' comp agency.

A few things worth knowing if you're heading into one of these claims:

They're more often disputed. Insurers fight occupational disease and cumulative trauma claims at higher rates than acute injury claims because the causation argument is more available to them.

They take longer. Investigation, medical workup, and dispute resolution all take longer when the question is "did 15 years of repetitive work cause this?" instead of "did the box that fell on his head cause this?"

They benefit more from early legal involvement. The medical record from day one needs to support the causation theory. Records built without that in mind often have gaps that have to be repaired later through expert reports.

They can be worth more. Cumulative trauma cases involving multiple body parts, permanent restrictions, and significant wage loss often have higher overall case values than acute injuries that heal quickly.

Concurrent claims are common. A worker with carpal tunnel may also have cervical spine issues from the same posture. A worker with back degeneration may also have a knee issue from the same lifting. These should be claimed together.

A few examples of how cumulative and occupational claims differ by state:

• California has well-developed cumulative trauma law and a specific "cumulative trauma" claim category distinct from specific injuries. The state's 1-year filing deadline runs from discovery.
• Florida requires occupational diseases to have been contracted in the course of employment and to be "peculiar to" the occupation — a higher bar than the general work-relatedness standard.
• New York has specific occupational disease provisions in the Workers' Compensation Law and a 2-year filing window from disablement.
• Pennsylvania allows occupational disease claims under a separate statute (the Occupational Disease Act) in addition to standard workers' comp.
• Texas has a 1-year filing deadline for occupational diseases from the date the employee knew or should have known the condition was work-related.
• Illinois uses a "last injurious exposure" rule for occupational disease, assigning liability to the employer at the time of last exposure.
• First responder presumption states (a growing list, including Florida, California, New York, Illinois, and others) presume that certain cancers, cardiovascular events, and PTSD in police, firefighters, and EMTs are work-related, shifting the burden to the employer.

If you've recently connected your chronic pain or diagnosis to your work, treat the next 90 days as critical. Get a clear diagnosis with causation in writing. Write down your work history. Give written notice to your employer. File with the state if your employer won't cooperate. And get a free consultation with a workers' comp attorney before you make any major decisions about your job or your treatment.

The discovery rule is a window that opens once and then closes. Acting inside it is the difference between a workers' comp claim and an unpaid medical bill.

DearLegal can connect you with workers' comp attorneys in your state who handle cumulative trauma and occupational disease cases. We're a legal referral service, not a law firm. There's no cost or obligation to talk through your case.