Michigan Workers’ Compensation Insurance

Michigan takes an unusual approach to an uninsured employer: rather than a civil fine, a court can order the business to stop employing anyone at all until michigan workers compensation insurance is back in place. There is no separate civil fine schedule sitting alongside that remedy. Enforcement runs through a criminal misdemeanor charge plus a court petition under MCL 418.641 and 418.645 that can prohibit the employer from having any employees whatsoever, and that combination changes how quickly an uninsured Michigan business needs to act.

Who Has to Carry Coverage in Michigan

Michigan’s coverage rule for private, non-agricultural employers runs on two separate tests, and either one alone triggers the requirement. Under MCL 418.115(a)-(b), coverage is mandatory for an employer with three or more employees at one time, or for an employer with even one employee who is regularly employed 35 or more hours per week for 13 or more weeks during the preceding 52 weeks. Both prongs carry the “other than agricultural employers” qualifier built into the statute, so agricultural employers are governed by a separate framework rather than this general test.

The second prong is the one that catches businesses off guard. A company with only two employees can still be required to carry coverage if just one of them works a near-full-time schedule for more than a quarter of the year, well before the business ever reaches the three-employee headcount that most owners assume is the trigger. Because either prong alone is sufficient, a business cannot rely on staying under three employees as a reason to skip coverage; it also has to track hours and duration for each individual worker against the 35-hour, 13-week test, and the two tests do not need to point the same direction on the same day for the requirement to already apply.

Because both prongs of MCL 418.115 carry the “other than agricultural employers” qualifier, agricultural employers should not assume the same three-employee or 35-hour tests apply to their operation without confirming the separate agricultural framework that governs them instead. A business that runs both a general commercial operation and a farming operation under one ownership structure should treat the two sides as governed by different rules rather than assuming one threshold covers the whole enterprise.

What Drives the Cost of a Michigan Policy

Michigan does not rely on NCCI for its rating structure. The Compensation Advisory Organization of Michigan, CAOM, is an independent bureau, and Michigan runs its own experience rating system, known as MiMods, separate from NCCI’s interstate mod calculation. An NCCI interstate mod quoted for a Michigan risk is a sign the account has not actually been rated under Michigan’s own system, and it is worth flagging as a red flag when comparing quotes. Because CAOM runs its own independent classification and experience-rating framework rather than administering an NCCI program, a Michigan quote should be checked against CAOM’s own filings, not a generic multi-state rate card.

Michigan’s Enforcement: No Fine, a Court Order

Michigan does not attach a civil dollar penalty to a coverage lapse at all. Instead, failure to carry required coverage is a misdemeanor under MCL 418.641(1), carrying a fine of not more than $1,000, imprisonment of not more than six months, or both, based on the current statutory text. A widely circulated figure describing a mandatory minimum of “no less than 30 days” imprisonment comes from a pre-1985 version of the statute and does not reflect current law; that language should not be repeated as if it is still in effect.

The more consequential enforcement tool sits at MCL 418.641 and 418.645: a court petition that can prohibit the employer from employing anyone at all until coverage is secured. Combined with direct tort and benefit liability for any injury that occurs during the uninsured period, this shutdown-style mechanism tends to force resolution faster than a fine-based system would, because a business that cannot legally employ anyone has no path to keep operating around the penalty.

Because there is no fine to accumulate against, an employer cannot simply treat an uninsured period as a cost of doing business and keep operating through it. An employer that lets coverage lapse in Michigan is better served treating the gap as an operational emergency rather than a billing issue.

No State Fund: The Michigan Workers’ Compensation Placement Facility

Michigan has no state fund. Coverage for employers the standard market declines runs through the Michigan Workers’ Compensation Placement Facility, an assigned-risk mechanism administered by CAOM. A declined Michigan employer is not without a guaranteed path to coverage through the Placement Facility. Because CAOM administers both the state’s classification and rating structure and the Placement Facility itself, an employer moving in or out of assigned risk should expect the same MiMod-based rating logic to follow the account either way.

Hard to Place in Michigan

A high MiMod driven by claim frequency, a mixed classification book spanning manufacturing and lower-hazard work, or a short operating history are common reasons a Michigan account gets declined by a standard carrier. None of them is the final word. Our high-risk workers’ comp page covers how we place accounts other brokers turn away. Because Michigan has no competitive state fund to leave, the better path for a declined account usually runs through a specialty carrier rather than the Placement Facility by default.

A decline from one carrier reflects that carrier’s own appetite, not a verdict on whether the account can be insured at all. Michigan’s manufacturing and warehouse-heavy economy produces plenty of accounts that a generalist underwriter turns away simply because the classification mix looks unfamiliar, and those are frequently the exact accounts a Michigan-focused specialty market is built to price correctly.

Workers’ Comp for Michigan PEO and Staffing Arrangements

Michigan has an unusual rule for professional employer organizations that catches many staffing operations off guard. Under the Worker’s Disability Compensation Act, following the Kidder v. Miller-Davis line of cases and the PEO Regulatory Act (PA 370 of 2010, MCL 338.3721 and following), a PEO client and the PEO itself are treated as co-employers, and both parties must maintain separate workers’ compensation policies rather than relying on one policy to cover the arrangement. PEO licensing violations under PA 370 are themselves a misdemeanor. The full detail on how this co-employer structure applies to a Michigan staffing operation is covered on workers comp for staffing agencies in Michigan.

Getting Covered in Michigan

Given how quickly Michigan’s enforcement can escalate to a court order against employing anyone at all, verifying that a policy meets Michigan’s own MiMod-based rating rules, rather than assuming an NCCI-rated quote transfers cleanly, is worth doing before binding. Get a quote or call (561) 990-3022 to get started. If your Michigan operation extends into other states, our multi-state workers’ comp page explains how coverage is structured across your full footprint, and our pay-as-you-go workers’ comp page covers how premium can track actual payroll instead of a flat annual estimate.

Frequently Asked Questions About Michigan Workers’ Compensation Insurance

Who needs michigan workers compensation insurance?

A private, non-agricultural Michigan employer needs coverage once it has three or more employees at one time, or even a single employee regularly working 35 or more hours per week for 13 or more weeks in the preceding 52 weeks, under MCL 418.115(a)-(b). Either test alone is enough to trigger the requirement.

What is the penalty for going without coverage in Michigan?

Michigan has no separate civil fine; failure to carry coverage is a misdemeanor under MCL 418.641(1) carrying a fine of not more than $1,000, imprisonment of not more than six months, or both. A petition can also be made to a court under MCL 418.641 and 418.645 to prohibit the employer from employing anyone at all until coverage is obtained.

Is Michigan’s minimum jail time for going uninsured 30 days?

No. That figure describes pre-1985 statutory language and does not reflect current law; the current misdemeanor under MCL 418.641(1) caps imprisonment at not more than six months with no stated minimum. Relying on the older figure understates how the current penalty structure actually works.

Does Michigan use NCCI’s experience mod system?

No. Michigan runs its own experience rating system, MiMods, separate from NCCI’s interstate mod calculation, administered through CAOM, the state’s independent rating bureau. An NCCI interstate mod presented for a Michigan risk has not actually been rated under Michigan’s own system.

Must a Michigan PEO client carry its own separate policy?

Yes. Under Michigan’s Worker’s Disability Compensation Act and the PEO Regulatory Act, PA 370 of 2010, a PEO client and the PEO are treated as co-employers, and both parties must maintain separate workers’ compensation policies rather than relying on a single shared policy.