Michigan Workers' Comp Deadlines and Notice Requirements

Deadline questions in Michigan workers’ comp cases usually come up in two situations. The first is right after an injury, when a worker is trying to understand what needs to happen and how quickly. The second is after something has already gone wrong, such as a denied claim, a benefit cutoff, or a letter that mentions a deadline the worker may have missed.

Both situations deserve a clear answer. This page explains the two main deadlines in Michigan workers’ comp law, how notice works, when the clock starts for injuries that develop over time, and what options may still exist when a deadline appears to have been missed. If you are worried about timing in your situation, the most important thing to know is that the facts matter, and the analysis is often more complicated than a simple yes or no.

The Two Workers’ Comp Deadlines Michigan Employees Need to Know

Michigan workers’ compensation cases involve two separate timing rules, and injured workers should understand both.

The first is the notice deadline. In most cases, you must notify your employer of the injury within 90 days. This means letting the employer know that you were hurt and that the injury is work related. While notice can sometimes be given orally, written notice is usually much safer because it creates a clear record of when the injury was reported. Michigan law also recognizes that late notice is not always fatal to a claim unless the employer can show actual prejudice from the delay.

The second is the claim deadline. Under Michigan law, a workers’ compensation case generally cannot move forward unless a claim for compensation is made to the employer, or a written claim is filed with the agency, within two years after the injury. In death cases, the claim must generally be made within two years after death. This is separate from the 90-day notice rule, which means satisfying one deadline does not automatically satisfy the other.

That distinction is important. You can report your injury right away and still run into problems if no claim is made within the two-year period. You can also have a dispute if the employer argues it did not receive timely notice. In occupational disease and gradual injury cases, the timing issue is even more complicated because the clock may begin when the worker knew, reasonably believed, or through ordinary diligence should have discovered that the condition was work related.

Michigan Workers’ Comp Deadline Reference

How to Give Proper Notice of a Work Injury in Michigan

Giving notice of a work injury is not the same as filing a workers’ compensation claim, but it is one of the first steps that can affect the entire case. In Michigan, injured workers should report the injury promptly and make sure there is a clear record of what was reported, when it was reported, and who received it. Michigan law generally requires notice within 90 days, although late notice may still be excused unless the employer can show actual prejudice from the delay.

Who should receive notice. Notice should be given to the employer through someone with authority to receive it including a supervisor, manager, human resources representative, or another person responsible for workplace injury reporting. Telling only a coworker is much more likely to create a dispute later. If your employer has a formal reporting policy, follow it. There is less room for the employer to argue no proper notice was given when the report went through the official channel.

Written notice is usually stronger than verbal notice. Michigan law does not require all notice to be in writing, but written notice is often much easier to prove. A verbal report can turn into a credibility dispute if the employer later says it was never told about the injury or claims the report was too vague. An email, an incident report, a text message to a supervisor, or a written statement can help create a timeline and preserve exactly what was communicated. The statute allows a claim for compensation to be made orally or in writing to the employer, which is another reason workers should be careful not to rely only on informal conversations.

What the notice should say. The notice does not need to sound like a legal document. It should clearly say that the injury happened at work, when it happened, where it happened, and what body parts or symptoms are involved. The goal is to give the employer enough information to understand that a work related injury is being reported and to investigate it. Michigan’s Employee’s Report of Claim form, WC-117, reflects the kind of information the agency expects in a claim including the date of injury, employer information, and a description of the injury.

What happens if notice is late. Late notice does not automatically destroy a Michigan workers’ compensation claim. Under Michigan law, failure to give notice within the statutory period is excused unless the employer proves it was actually prejudiced by the delay. In practice, that often means the employer argues it lost the chance to investigate promptly, inspect the accident scene, interview witnesses, or evaluate whether the injury was truly work related. If the employer had actual knowledge of the injury through other means, the formal notice requirement may be satisfied even without a written report.

What to do if the employer does not act. Even if you reported the injury, do not assume the employer or insurance company will handle everything correctly. Injured workers can file Form WC-117, the Employee’s Report of Claim, directly with the Michigan Workers’ Disability Compensation Agency. If the employer does not move the claim forward, denies that notice was given, or disputes the injury, filing directly with the agency may become an important next step.

When the Clock Starts for Gradual Injuries, Occupational Diseases, and Late Appearing Conditions

Not every work injury has a clear starting point. For occupational diseases and gradually developing conditions, the clock generally starts when the worker knew, reasonably believed, or through ordinary diligence should have discovered that the condition was work related. That is why these cases often lead to disputes over when the deadline actually began.

If you have a gradually developing condition that may be work related, the deadline may have started later than you think. It may also have started earlier than you realize. That often depends on when you first connected the condition to your job and what the medical evidence shows.

Waiting because you are unsure when the clock started is one of the riskiest things an injured worker can do. If the deadline has already begun running, delay only gives you less time to protect your claim.

What Happens if a Deadline Is Missed

This is the question many injured workers ask too late. They read about the 90 day notice rule or the two year claim deadline, assume they missed it, and stop pursuing the case. In some situations, that assumption may be wrong, or at least worth examining before giving up on the claim.

Michigan workers’ compensation law does not treat every deadline issue the same way. Whether a missed deadline actually prevents benefits depends on the type of deadline involved, when the clock started, what the employer knew, and the facts behind the delay.

Late notice is not always fatal. Michigan law allows the 90 day notice issue to be excused unless the employer can prove it was actually prejudiced by the delay. In plain terms, that usually means the employer must show the late report made it harder to investigate the injury in a meaningful way.

Employer knowledge may matter. In some cases, the employer already knew about the injury even if the worker did not submit a formal written report right away. If a supervisor witnessed the incident, management was told what happened, or the injury was otherwise known at work, that may affect how the notice issue is analyzed. The purpose of notice is to give the employer a fair opportunity to investigate the claim.

The clock may not have started when you think. For gradually developing conditions and occupational disease claims, the deadline does not always run from the first day of symptoms or the first day of exposure. Michigan law uses timing rules tied to when the worker knew, reasonably believed, or through ordinary diligence should have discovered that the condition was work related. That can make the deadline question much more fact specific than it appears at first.

Do not assume the case is over. The most important thing an injured worker can do after thinking a deadline may have passed is to get a legal opinion before treating the claim as finished. The answer is often not as simple as counting days on a calendar. It can depend on when the condition was discovered, what the employer knew, and whether the delay actually caused any harm to the employer’s ability to investigate.

Deadline Rules for Specific Situations

Most workers’ compensation deadline questions follow the standard rules covered above. But some situations can affect how the timing rules apply.

Death benefit claims. Michigan law says that when an employee dies, the claim must generally be made within two years after death. That creates a separate deadline for death benefit claims. Statute: MCL 418.381

Occupational disease claims. For occupational disease claims, the deadline does not necessarily begin on the first day of exposure or the first day symptoms appear. Michigan law says the claim period begins when the employee, or a deceased employee’s dependents, had knowledge, a reasonable belief, or through ordinary diligence could have discovered that the disease or death was work related. Statute: MCL 418.441

Gradual injuries and late appearing conditions. Michigan’s workers’ comp statute says notice must be given within 90 days after the injury happened, or within 90 days after the employee knew or should have known of the injury. It also ties the claim deadline to the later of the injury date, the date disability manifests, or the last day of employment with that employer. That is why gradual injuries and late diagnosed conditions often involve a different timing analysis than a one time accident. Statute: MCL 418.381

Minors. Michigan has a general statute that addresses tolling for infancy. While that statute is not specific to workers’ compensation, it may matter in some cases involving injured workers who were minors at the time of injury. Statute: MCL 600.5851

If your case involves death benefits, occupational disease, a gradual injury, or an injured worker who was a minor, the deadline analysis may not be as simple as counting days on a calendar.

When It Makes Sense to Get Legal Advice About a Deadline Issue

Deadline questions in Michigan workers’ comp cases are not always resolved by looking at a calendar. The rules are specific, the exceptions are real, and the facts behind the delay often matter as much as the date itself. Getting legal advice tends to matter most in these situations:

That last point is worth emphasizing. Uncertainty about a deadline is a reason to get an answer, not a reason to assume the claim is over. At The Clark Law Office, that conversation is with Michigan workers’ compensation lawyer Matthew Clark directly. No intake screeners, no case managers, no obligation to move forward.

Explore This Guide

Now that you understand the deadlines and notice requirements that apply to Michigan workers’ comp cases, the pages below cover the other key parts of the process including what workers’ compensation is, how to file a claim correctly, and what to expect after a claim is filed.