If a workers’ compensation claim is received by the Commission and the Commission’s records indicate that the employer is uninsured, the Commission shall notify the employer of the claim by sending the employer: A notice of the claim form; An uninsured employer's questionnaire; and A request for verification of the employer's workers' compensation insurance policy. The Commission shall send a copy of the notice of the claim form to all parties of record. Within 21 days of the date the notice of the claim form was sent by the Commission: The uninsured employer shall: Begin paying temporary total benefits; or File a response to employee’s claim form, if the employer contests the claim; and File one of the following: The signed and completed uninsured employer's questionnaire; or The verification of the employer's workers' compensation insurance policy, if applicable. Within 21 days of the date the Commission sends the notice of the claim form to the parties of record, the claimant shall complete and file the claimant’s questionnaire in accordance with COMAR 14.09.02.