State-owned and operated organizations that write workers compensation insurance. Some states have monopolistic funds, which are the only market for workers compensation insurance in those states. Other states have competitive funds that compete with insurers in that state. (Note that several of these funds also write workers compensation in additional states.) The monopolistic fund states are North Dakota, Ohio, Washington, and Wyoming. Puerto Rico and the U.S. Virgin Islands also have monopolistic funds. Currently, 19 other states offer the option of purchasing workers compensation insurance from a competitive state fund.

Jurisdictions where an employer must obtain workers compensation insurance from a compulsory state fund or qualify as a self-insurer (as is allowed in two of the jurisdictions). Such insurance is not subject to any of the procedures or programs of the National Council on Compensation Insurance (NCCI). Instead, each jurisdiction has its own rules and regulations that govern the placement and administration of workers compensation insurance. The following states/jurisdictions are monopolistic fund states: North Dakota, Ohio, Washington, Wyoming, Puerto Rico, and the U.S. Virgin Islands.