Blog · Nov 3, 2026

Workers Comp for Sole Proprietors: Coverage and Documentation

A sole proprietor’s personal coverage and the business’s employee coverage are different questions. A proprietor may be excluded unless coverage is elected in one state, while a particular trade or arrangement can trigger different duties elsewhere. Ask for the state, workforce and owner election before deciding which document to collect.

Begin with the individual, then the business

If the owner works alone, establish whether the applicable state requires or permits personal coverage and whether the owner elected it. If the business employs people, review those people separately. Do not accept a personal exclusion statement as proof that the business owes no duties to a crew.

For example, Maryland’s §9-227 says a sole proprietor is not a covered employee absent an election, and sets notice requirements for inclusion. California’s insurance department explains that owner inclusion must be stated in the policy or added by endorsement, while some specified contractors must carry insurance even with no employees. These differences make a nationwide yes-or-no answer unreliable.

Documents to request

• The proprietor’s legal name and any doing-business-as name used on the contract.
• A current statement of who will perform work and whether employees or helpers are involved.
• The relevant state status or election document when the owner relies on one.
• Policy evidence and the owner-inclusion endorsement if personal coverage is claimed.
• Written resolution of any difference between the state minimum and your signed contract.

The Maryland sole proprietor guide and Kentucky sole proprietor guide show different documents that can matter. Use the appropriate state’s procedure rather than downloading a generic nationwide exemption form.

Example: a certificate naming the business

A hypothetical solo carpenter supplies a workers compensation certificate naming the carpenter’s trading name. The hiring company’s contract requires the working owner to be insured. The reviewer should not infer personal inclusion from the business name alone. The broker must identify the relevant owner election or endorsement and confirm its effective period. If the owner is excluded, that needs an explicit contract decision rather than a completed insurance checkbox.

Revisit changes in staffing

An owner-only review becomes incomplete when another worker joins the job. Ask the proprietor to report staffing changes and review employee coverage before relying on the earlier approval. Preserve the original statement and the later update so the audit file explains the timeline.

Use the subcontractor prequalification form to ask these questions up front. Keep unresolved status, missing insurance and approved exceptions separate in your records.

Sources checked November 3, 2026.

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