Most Michigan business owners think workers' compensation is a "when I get bigger" problem. Here's the threshold that says otherwise: if you regularly employ one person for 35 or more hours a week for 13 weeks in a year, coverage is legally required. Not three employees — one. And the alternate trigger is just as easy to hit: three employees at any one time, including part-timers, which a coffee shop with three weekend baristas crosses without anyone noticing. The consequences of missing it aren't theoretical either. Michigan employers who fail to carry required coverage still owe the injured worker's benefits, face fines and possible misdemeanor exposure, and — the part that gets attention — officers and directors can be held personally liable. This guide covers exactly who needs coverage, what it costs in Michigan, how the state's competitive market works in your favor, and the exclusions people get wrong.
What Michigan employers should know: (1) Required at 3+ employees at any one time (part-timers count) OR 1 employee at 35+ hrs/week for 13 weeks in the preceding 52. (2) LLC member-managers and corporate officers count as employees under Michigan rules. (3) Michigan is a competitive market — no state fund, so coverage can genuinely be shopped. (4) Costs average around $97/employee/month statewide but vary hugely by industry class code. (5) Failing to carry it means you still owe the benefits, plus fines and personal liability for officers.
Who Needs Workers' Compensation Insurance in Michigan?
The short answer: most employers with any employees at all. Michigan's thresholds are low enough that businesses assume they're exempt when they aren't.
Under the Workers' Disability Compensation Act, coverage is required for:
| Employer type | Coverage required when… |
|---|---|
| Private employers | Regularly employing 3 or more at any one time (including part-time), OR 1 or more working 35+ hrs/week for 13 weeks or longer in the preceding 52 weeks |
| Agricultural employers | 3 or more employees working 35+ hrs/week for 13 or more consecutive weeks |
| Households with domestic workers | Anyone working 35+ hrs/week for 13 weeks or longer in the preceding 52 weeks |
| Public employers | Always — regardless of size |
Two details trip people up constantly. First, "three or more at any one time" includes part-time employees — a retail shop with three part-time cashiers on the schedule together has crossed the threshold. Second, the 13 weeks in the one-employee test don't have to be consecutive; they're measured across the preceding 52 weeks. Seasonal and fluctuating staffing doesn't get you out of it.
Michigan treats a partner in a partnership, an LLC member who is also a manager, and a corporate officer as employees for these purposes — which means they can count toward your threshold and may require coverage themselves. Sole proprietors aren't employed by another person and generally aren't required to cover themselves, though their employees still need coverage. Businesses that believe they're excluded are expected to file Form WC-337, Notice of Exclusion, with the state rather than simply assuming exemption. Get this determination in writing from your agent or attorney — it's the single most common place small Michigan employers guess wrong.
What Does Michigan Workers' Comp Actually Cover?
The short answer: medical treatment for work-related injury or illness, wage-loss benefits while the employee can't work, specific-loss benefits, and death benefits — with no fault question and, in exchange, no lawsuit.
- Medical benefits. Treatment costs for a work-related injury or occupational disease, with no deductible or copay to the employee.
- Wage-loss benefits. Generally 80% of the employee's after-tax average weekly wage, subject to a state maximum. For 2026 the maximum weekly rate is $1,201 — set at 90% of the state average weekly wage, roughly $62,452 annualized.
- Specific-loss benefits for certain injuries, paid for a set number of weeks regardless of whether the worker is disabled.
- Death benefits for dependents.
- Vocational rehabilitation where applicable.
Michigan employers pairing this with other coverages should note that a business owners policy covers none of it, and business vehicles need separate commercial auto — see the program overview in our Michigan small business insurance guide.
The trade underneath all of it: workers' comp is generally the exclusive remedy. The employee receives benefits without proving the employer was at fault, and in return gives up the right to sue for the injury. That protection is worth as much to the business as the benefits are to the worker — and it evaporates if you were required to carry coverage and didn't.
How Much Does Workers' Comp Cost in Michigan?
The short answer: Michigan averages roughly $97 per employee per month across all industries, but your class code matters far more than the average — the spread runs from about $16 to $350 per employee monthly.
Michigan is comparatively affordable. Workers Compensation Shop's analysis puts average Michigan rates roughly 22% below the U.S. median, meaning employers here pay less premium than employers in 37 other states for the same class codes. MoneyGeek's 2026 analysis across 408 Michigan industries puts the state average near $97 per employee per month, with Beauty, Body & Wellness Services cheapest at about $16 and Transportation & Logistics most expensive at about $350. TechInsurance reports an average Michigan premium of about $53 per month ($631 annually) among its small-business customers, reflecting a lower-hazard mix.
What drives your number: your class code (roofers and bookkeepers occupy different universes), your payroll (premium is calculated per $100 of payroll), your claims history via the experience modification rate, and your safety program. The experience mod is the lever most owners underuse — a strong safety record and an active return-to-work program compound into lower premium year over year.
How Does Michigan's Competitive Market Work?
The short answer: Michigan has no state-run monopoly fund. Employers buy from private carriers, which means workers' comp here can be genuinely shopped the way any other commercial line can.
Michigan has operated an open competition system since 1983: insurers file their own base manual rates by class code for approval, rather than the state setting a single rate everyone charges. The Workers' Disability Compensation Agency administers the benefits system, while the Michigan Assigned Claims Facility serves as the fallback for employers who can't secure coverage in the voluntary market — a genuine safety net, but one where rates commonly run 20% to 30% above voluntary market pricing.
The practical implication: quote the voluntary market first, across multiple carriers, before accepting assigned-risk pricing. Employers can also self-insure by demonstrating financial capability and obtaining state approval, though that's a route for larger organizations.
Michigan case law and PA 370 of 2010 establish that a client company and its professional employer organization are co-employers, and both are required to maintain separate workers' comp policies. Both can be held liable for a work-related injury. If you're on a PEO arrangement and don't carry your own coverage, that's worth resolving now rather than at claim time.
Why Class Codes Decide Your Premium
The short answer: your class code is the single biggest input into what you pay, and misclassification cuts both ways — it either inflates your premium or blows up at audit.
Workers' comp premium starts with payroll assigned to industry class codes, each carrying its own rate per $100 of payroll. The spread across Michigan classes is enormous — roughly $16 per employee monthly at the low-hazard end against about $350 for transportation and logistics. Two things follow from that:
- Split your payroll correctly. A construction company whose office staff sits in the field class code is overpaying substantially. Many carriers permit separating clerical payroll into its own lower-rated class when the duties genuinely warrant it and records support it.
- Don't classify optimistically. Workers' comp policies are audited. A class code that understates your actual operations produces a premium bill at audit, sometimes a large one, and can create coverage disputes on a claim. Accurate is cheaper than clever.
- Manage the experience mod. Your experience modification rate reflects claims history against expectations for your class. A documented safety program and an active return-to-work process pull it down over time, compounding into lower premium year after year — and it's the part of the calculation most small employers never actively manage.
- Bundle the rest of the program. Most Michigan employers carrying workers' comp also need a business owners policy and, if they own commercial property or vehicles, coverage that responds to wind and hail damage and sewer and water backup at the business address.
- Certificates matter for the work you win. General contractors and commercial clients routinely require a certificate of insurance before awarding work, which is why some sole proprietors buy coverage they aren't legally required to carry.
What Happens If You Don't Carry It?
The short answer: you still owe the benefits, plus fines, plus potential criminal exposure — and corporate officers can be held personally liable.
Michigan does not treat non-compliance lightly. An employer who fails to carry required coverage remains responsible for paying the injured worker's medical treatment and lost wages out of pocket — the obligation doesn't disappear because the policy did. On top of that: civil fines, potential misdemeanor exposure including possible imprisonment, and personal liability for officers and directors, which pierces the protection most owners assume their entity provides. Misclassifying an employee as an independent contractor doesn't help either; Michigan holds employers responsible for benefits regardless of the label used.
Set against a typical premium of roughly $53 to $97 per employee per month, the risk math isn't close.
How Workers' Comp Fits Your Michigan Business Program
The short answer: it's one of four separate pieces, and it never comes bundled with the others.
A complete Michigan small business program generally means: a business owners policy for general liability, commercial property, and business income; workers' compensation for employee injuries; commercial auto for business vehicles, which in Michigan runs under the same No-Fault framework as personal auto with its own PIP selections; and professional liability where your work carries errors-and-omissions exposure. Workers' comp is never part of a BOP — that's the most common coverage gap we find. Our Michigan small business insurance guide walks the full program, and owner-dependent businesses should also read term versus whole life for the key-person conversation.
The Bottom Line on Michigan Workers' Comp
If you employ anyone in Michigan, assume you need workers' compensation until an agent or attorney tells you otherwise in writing — the thresholds are low, part-timers count, and LLC member-managers and officers count too. Then take advantage of what Michigan's competitive market gives you: shop the voluntary market across carriers, get your class codes right, and treat your experience modification rate as something you manage rather than receive.
Terry Smith Agency places commercial coverage through our carriers and reaches additional commercial and specialty markets through our Kraft Lake brokerage. Bring your payroll by job function, your entity structure, and any prior claims — that's most of what we need to classify you correctly and market it properly.
Workers' Comp Questions Michigan Employers Ask
Do I need workers' comp for one part-time employee in Michigan? Possibly. One employee triggers the requirement if they work 35 or more hours per week for 13 weeks or longer in the preceding 52 weeks — and the 13 weeks don't need to be consecutive. Separately, three or more employees at any one time triggers it regardless of hours, and part-timers count toward that three. Get a written determination rather than assuming.
Do sole proprietors need workers' comp in Michigan? A sole proprietor isn't employed by another person and generally isn't required to carry coverage on themselves. Any employees of the sole proprietorship still need coverage once thresholds are met, and many sole proprietors buy coverage voluntarily because clients and general contractors require a certificate before awarding work.
Are LLC members and corporate officers covered? Michigan generally treats an LLC member who is also a manager, a partner in a partnership, and a corporate officer as employees, meaning they can count toward thresholds and may require coverage. Certain closely-held entities can qualify for exclusion, but businesses claiming exclusion are expected to file Form WC-337 with the state rather than simply omitting the coverage.
How is workers' comp premium calculated in Michigan? Premium is generally based on your payroll per $100, multiplied by a rate assigned to your industry class code, then adjusted by your experience modification rate reflecting claims history. Michigan's open competition system lets carriers file their own base rates by class code, so the same business can price differently across insurers — making comparison worthwhile.
What's the maximum weekly benefit in Michigan for 2026? The maximum weekly workers' compensation rate for 2026 is $1,201, set at 90 percent of the state average weekly wage, roughly $62,452 annualized. Disabled employees are generally paid 80 percent of their after-tax average weekly wage subject to that cap, with the exact amount depending on wage, tax filing status, and number of dependents.
Can I use a PEO instead of buying my own policy? No. Michigan treats the client company and the PEO as co-employers under PA 370 of 2010 and established case law, and both are required to maintain separate workers' compensation policies. Both can be held liable in the event of a work-related injury.
Written and reviewed by Terry Smith, a licensed Michigan insurance agent, for Terry Smith Agency in Battle Creek. Terry Smith Agency is an independent agency: we place coverage directly with our carriers and access additional commercial and specialty markets through our Kraft Lake brokerage. Coverage requirements cited from the Michigan Workers' Disability Compensation Act and Michigan Department of Labor and Economic Opportunity employer guidance; benefit maximums from the Workers' Disability Compensation Agency's published 2026 rates. Cost figures from MoneyGeek's 2026 analysis of 408 Michigan industries, TechInsurance customer policy data, and Workers Compensation Shop rate comparisons — market averages, not quotes; your premium depends on class code, payroll, entity structure, and claims history. Eligibility and exclusion determinations are fact-specific: this guide is general information, not legal or tax advice, and employers should confirm their obligations with a licensed agent or attorney. Last reviewed by Terry Smith on August 27, 2026.