In this article, it explains that workers’ compensation insurance is one of the most important insurance policies for a small business, and that most small businesses are required to have workers’ compensation insurance. Businesses regularly are losing and adding employees over time, and this can impact the specific level of coverage that the business needs. Since this happens, there are yearly insurance audits. These occur to make sure that each business pays the correct amount for their coverage.
https://www.insureon.com/blog/what-is-a-workers-compensation-insurance-audit