How to Switch Workers' Comp Insurance Carriers

Common reasons to move include a non-renewal notice from your current carrier, a rate increase that no longer reflects your improved safety record or experience mod (see our guide to experience mod), a carrier's appetite shifting away from your class codes, poor claims service, or simply not having compared options in a while. Whatever the reason, the mechanics of switching are largely the same.

A non-renewal notice deserves particular attention, since it puts you on a deadline that isn't entirely of your own choosing. Carriers typically must give a minimum amount of advance notice before declining to renew, but the exact window varies by state, so treat a non-renewal notice as the start of your shopping process immediately, not a formality to deal with later.

Loss runs are a report from your current or prior carrier listing every claim on your account — status, reserves, and payments to date. Every carrier you get quoted by will want to see them, typically for the past three to five years, since your loss history is a core underwriting input alongside your experience mod. Request loss runs from your current carrier well before you need them; carriers aren't always fast to produce them, and a gap in your loss history can slow down or complicate a new quote.

If you've had multiple carriers over the past several years, request loss runs from each of them rather than assuming your most recent carrier has a complete record of everything that came before. A gap in the reported history, even an innocent one caused by a carrier that's no longer easy to reach, can make a new carrier's underwriter more conservative than your actual record would otherwise justify.

The cleanest way to switch carriers is at your policy's natural renewal or expiration date. There's no cancellation penalty to worry about, and the transition lines up naturally with your policy's normal audit and rating cycle. If you know you want to shop your renewal, start the process well before the expiration date — comparing multiple carriers takes time, and starting early avoids a coverage gap if your current carrier issues a non-renewal notice.

Cancelling a policy before its expiration date to switch to a new carrier is possible in most cases, but it can come with a cancellation penalty depending on how your current policy is structured and who initiates the cancellation. Two cancellation methods matter here:

Whether your policy cancels pro-rata or short-rate depends on your policy's cancellation provisions and, in many states, on regulations that limit when a carrier can apply a short-rate penalty at all. Ask your current carrier or agent directly which method applies before you commit to a mid-term switch, so the cost of leaving early is a known number rather than a surprise on your final bill.

It's also worth asking whether your specific reason for leaving affects the calculation. Some carriers and states treat a cancellation initiated because the business itself is closing, being sold, or no longer needs coverage differently than a cancellation initiated purely to shop a better rate elsewhere, so the answer isn't always a blanket policy-wide rule.

To avoid a coverage gap, line up your new policy's effective date with your old policy's cancellation date exactly — don't let there be a day, or even an hour, where neither policy is in force. Your new agent can typically coordinate the cancellation notice to your old carrier once your new policy is bound, so you're not managing two separate processes on two separate timelines.

Also update any certificates of insurance you've issued to clients or general contractors once the new policy is in force, since an old certificate referencing your prior carrier's policy number can create confusion — or a rejected certificate — if a client tries to verify it against a policy that no longer exists.

Your experience mod isn't tied to a specific carrier — it's calculated by NCCI or your state's independent rating bureau based on your claims history, and it follows you to a new carrier rather than resetting. Switching carriers doesn't erase a bad mod or create a new one; it simply changes who's insuring the risk the mod is already reflecting. This is worth knowing if a rate increase from your current carrier is driven mostly by your mod rather than by that carrier specifically — a new carrier will see the same mod and may price it similarly, unless their underwriting appetite or schedule credit practices genuinely differ.

Since your loss history and experience mod travel with you regardless of which carrier you choose, the best time to see what you actually qualify for elsewhere is before you commit to cancelling your current policy, not after. Get Multiple Quotes within minutes to compare carriers side by side using your real loss runs and payroll, not just an estimate, so you know exactly what you're switching to before you switch away from what you have.