CA workers comp insurance has been around since 1910, and the state was actually responsible for causing many other states to create their own workers comp laws and regulations. This protection is older than Social Security and many other common protections that are now in place for employees and businesses today. Any company that operates in California has to have workers comp coverage for its employees, no matter what. The amount of coverage that a business gets is going to vary based on their specific needs, but must meet the state minimum law requirements in order to keep the company out of legal trouble.