Employers operating in extra-hazardous industries must obtain coverage through the Wyoming Department of Workforce Services. Employers in optional classifications may elect coverage. Any business performing work in Wyoming or hiring a Wyoming resident should register with the department so it can determine the company’s obligations.
https://dws.wyo.gov/dws-division/workers-compensation/employers/
https://dws.wyo.gov/dws-division/workers-compensation/employers/new-employers/