What it means
Workers' compensation insurance is compulsory for employers in most economies. In a handful of American states, the state goes further than mandating cover: it sells the cover itself, and private insurers are barred from competing.
That arrangement is the monopolistic state fund. Employers in Ohio, North Dakota, Washington and Wyoming must buy workers' compensation from the state fund, such as the Ohio Bureau of Workers' Compensation, rather than shopping the private market.
The logic is stability and universal availability. A state fund must insure every eligible employer, including risky small firms that private insurers might refuse, and it is built to survive the cycles that periodically bankrupt commercial carriers.
The model has real frictions. Employers cannot buy stop-gap cover from the fund for staff working in other states, so businesses operating across state lines must arrange separate policies elsewhere, a gap known in the trade as other-states coverage.
The monopoly is on the insurance, not on all choice. Employers in some of these states can apply to self-insure if they are large and solvent enough, and the funds themselves compete on service and safety programmes even without commercial rivals.
For a business owner expanding into one of these states, the practical rule is simple: your existing workers' compensation policy does not follow you. Register with the state fund, budget its premiums into the expansion, and arrange separate cover for any employees who cross state borders.
The funds are also significant employers of safety expertise. Because they insure whole state workforces, they run injury-prevention programmes at a scale no small private carrier could justify, and their data shapes workplace safety rules.
The number of monopolistic states has shrunk over the decades. Several states opened their funds to competition or privatised them outright, leaving the current four as the surviving examples of the pure model.
In practice
Real-world examples.
Example
A Michigan manufacturer opens an Ohio plant and assumes its group policy covers the new staff. Its broker corrects the assumption: Ohio is a monopolistic state, and the plant registers with the Ohio Bureau of Workers' Compensation.
Example
A Washington construction firm sends a crew to a project in Idaho for six weeks. Because the state fund's cover stops at the border, the firm buys an other-states policy from a private insurer for the trip.
Example
A Wyoming startup with three employees finds private insurers will not quote for its risky field work. The state fund accepts it, as it must, and the founders get compulsory cover no commercial market would offer.
Formula
Calculation
There is no formula for the monopoly itself, but the budgeting logic is a premium rate per hundred dollars of payroll by job class, adjusted by the employer's own claims record. Premium = (payroll / 100) x class rate x experience modifier, added up across classes.
Worked example (illustrative rates; the real ones are set by the state fund's own rating system). A firm pays $200,000 in construction payroll at a class rate of $8 per $100, giving ($200,000 / 100) x $8 = $16,000. Its office staff earn $300,000 at $0.50 per $100, giving ($300,000 / 100) x $0.50 = $1,500. The total is $17,500 before adjustment. With a favourable claims record the fund applies a 0.90 modifier, so the final premium is $17,500 x 0.90 = $15,750 a year.Case study
Seen in the real world.
In this illustrative fictional case, Dario expands his catering company from Pennsylvania into Ohio, assuming his insurance broker will simply extend the existing workers' compensation policy. The broker explains that Ohio is a monopolistic state fund state, and Dario must register with the state fund directly before his first Ohio employee starts. The registration takes a week, the premium structure differs from what he knows, and a summer contract sends staff briefly into West Virginia, requiring a separate other-states policy on top. Dario's checklist for his next expansion now starts with one question: is the new state monopolistic, because everything about workers' compensation flows from that answer.
Watch out
Common mistakes.
- Assuming a national workers' compensation policy covers staff in monopolistic states, when those states require cover from their own fund and private policies stop at the border.
- Forgetting other-states coverage, when employees of a monopolistic-fund employer working elsewhere need separate insurance the state fund does not provide.
- Reading the monopoly as poor value by definition, when the funds must accept every eligible employer and often provide safety services a small firm could never buy alone.
Questions
People also ask.
Which states have monopolistic state funds?
Ohio, North Dakota, Washington and Wyoming. Employers there must buy workers' compensation from the state fund, such as the Ohio Bureau of Workers' Compensation, rather than private insurers.
Can employers avoid the state fund?
Only partly. Large, solvent employers may qualify to self-insure, but ordinary businesses have no private alternative for their in-state workers' compensation.
What is other-states coverage?
Insurance for employees of a monopolistic-fund employer who work outside that state. The state fund's cover stops at its borders, so a separate private policy is needed for out-of-state work.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%