The renewal letter arrives and the workers' comp premium has moved. For a labor-heavy employer, this is one of the largest coverage costs on the books, and the letter does not explain anything. It could be your claims history catching up with you. It could be every employer in your state paying more for the same coverage. You cannot negotiate, or budget, until you know which one it is.
Published rate and premium surveys exist to answer exactly that question. Rating bureaus and research organizations collect what insurers filed with state regulators and what employers actually paid at renewal, then report the direction and size of the change, usually broken out by state and line of coverage. Reading them takes some care, because the surveys measure different things and cover different states, but the work is straightforward once you know what to look for.
What the surveys actually measure
There are several kinds of numbers that get reported as workers' comp trends, and they are not interchangeable. The first is the filed rate: what an insurer or rating bureau asks a state regulator to approve for a class of business. The second is the renewal premium: what employers actually pay after credits, debits, schedule modifications, and program changes are applied. The third is the loss ratio: premiums collected versus claims paid, which tells you whether insurers are making money on the line and may push rates in one direction next cycle.
When a survey reports one of these, it is describing a different thing than a survey reporting another. A filed rate increase does not mean every employer's bill rose by that amount, because an employer's own experience rating, the adjustment that reflects their claims history, can offset or add to it. Before you use a number, find out which kind it is. A reputable survey states this plainly in its methodology section.
Workers' comp is also regulated at the state level. Rules, rate filings, and competitive conditions differ from state to state, so a national average is a rough guide at best. Two employers in the same industry can face opposite rate movements in the same year purely because of where they operate. The useful surveys break their results out by state, and for an employer the state row is the one that matters.
Who this approach suits, and who it does not
This is for the employer or broker who wants to walk into a renewal conversation with evidence: knowing whether the market moved, in which direction, and roughly how much. It suits labor-heavy industries where workers' comp is a major line item, and anyone who has to explain a premium change to an owner, a CFO, or a board.
It is not for someone who wants a precise prediction of next year's bill. Surveys describe what already happened. Your own claims history, payroll, and class codes, the job classifications that set your base rate, will move your premium more than any market trend in most years. The surveys give you the context, not the quote.
How to check your own state's situation
- Find the surveys Identify the rating bureaus and research organizations that publish workers' comp rate and premium surveys for your state.
- Check the publication date Confirm when the survey was released so every figure is tied to a known period.
- Read the methodology Determine whether the survey covers filed rates, renewal premiums, or loss ratios.
- Find your state's row Look up the state-specific result rather than relying on the national figure.
- Note the direction and drivers Record whether rates rose, fell, or held, and any stated reasons such as claims costs or system changes.
- Compare with your own renewal Set the survey's direction beside your premium change to see how much is market and how much is you.
- Bring it to your broker Ask the broker to explain how the trend applies to your class codes and operations before renewal talks begin.
You can do this without paying for anything. Rating bureau summaries and state regulator filings are generally public, and trade press reports on the major surveys when they drop. The discipline is in the reading, not the access: match the period, match the state, and match the measure before you draw a conclusion. A figure from a survey of renewal premiums tells you little about filed rates, and a two-year-old survey tells you nothing about this cycle.
Common drivers behind the movement
Surveys that explain their numbers usually point to a short list of drivers. Medical costs within claims are a recurring factor, since medical treatment is a large share of workers' comp claim spend. Wage levels matter because indemnity benefits, the payments for lost time, are tied to wages. System-level changes, such as new rules on how claims are handled or benefits calculated, can move rates in a single state sharply in one year. Investment income and competition among carriers shape the cycle as well, pushing rates down when carriers fight for business and up when results weaken.
When a survey gives a reason, note it alongside the number. A rate change driven by a one-time system reform reads differently than one driven by ongoing claims cost growth, even at the same size. The reform may not repeat. The cost growth probably will.
What to do with what you learn
If the survey shows your state's rates moved in the same direction as your premium, the market explains most of the change, and your negotiation is about staying competitive within that market, not reversing it. If the survey shows your state held flat or fell while your premium rose, the difference is likely sitting in your own account: claims history, payroll growth, or a class code change. Those are fixable or at least explainable, and they are where the renewal conversation should start.
Either way, you arrive with something the insurer has to respond to. A premium change you can explain is a premium change you can question.
Questions buyers ask
Do rate changes hit every state the same way?
No. Workers' comp is regulated state by state, so filings and results differ. Read the state-level rows in a survey, not just the national average.
How often are the surveys updated?
It depends on the publisher. Each survey states its own release schedule and the period its figures cover, so check the publication date on every one before using it.
Does a market rate change mean my premium moves by the same amount?
Not necessarily. Your own claims history, payroll, and class codes feed into your bill through experience rating, which can offset or add to market movement.
Can I do this myself, or do I need a broker?
You can read the published surveys yourself, since they are public. A broker adds value in interpreting how the trend applies to your specific operations and class codes.
Insurance tips an owner can use.
Plain English. One short email a week.
Get The Brief