The success of the prehearing conference system depends upon a high level of expertise in workers' compensation matters by representatives of carriers and claimants. Carriers should be represented either by an attorney licensed to practice in this state, or by individuals who can demonstrate a continuing proficiency in compensation law and procedure. Negotiation of a settlement in a workers' compensation case constitutes the practice of law, and no attorney's fees or expenses will be authorized by the board to any representative of the claimant other than an attorney licensed to practice in this state.