(a) A settlement or a written agreement must be on a form prescribed by the division.(b) In addition to the parties, the employee's representative, if any, must sign the written agreement or settlement.(c) Unless the division finds that an extraordinary circumstance applies, an employee's representative must not sign a written agreement or settlement on behalf of the employee.(d) The insurance carrier's representative must sign a written agreement or settlement as the agent of the insurance carrier, and the insurance carrier will be bound by the written agreement or settlement.