Whenever you're asked to bid on a job, you're usually required to certify that the price is firm and that there won't be any unexpected expenses and cost overruns once the project is underway. Because this is standard practice in the industry, it's understandable that some contractors are surprised that their insurance costs don't operate the same way -- especially when the contractor has asked agents for "bids" on the insurance package.
Neither Workers Compensation nor General Liability, two of the key coverages in Construction insurance, usually set fixed premiums. Because payrolls and/or revenues the contractor pays or earns during the policy period determine the premiums, and there's no way to know these costs in advance, the premiums will also be estimates. Once actual payrolls and revenues are known (usually after an insurance company audit after the end of the policy period), the company will set the final premium based on these figures. The contractor -- you -- will then receive either a refund (if your insured losses were lower than expected) or a bill for the additional premium due (when these losses are higher than expected).
Although it's never pleasant to owe more money after a policy has expired, keep two things in mind: First, if the insurer were able to predict the final results accurately, it would have charged this amount in advance. Second, an additional premium due after an audit shows that you had a better year than expected -- and that's always good news!
If you have any questions about how your insurance works or how premiums are calculated, just give us a call. We're here to help.