The carrier shall have 20 days after the date of approval of a structured settlement to pay or tender any approved lump sum payment to the injured employee or approved fees and expenses to any attorney(s), and shall have 20 days from the receipt of bills in which to tender all reasonable accrued medical expenses necessarily resulting from the injury. Failure to tender payment within such time shall cause the board to immediately set such case for formal hearing for the purpose of invoking proper sanctions (effective 1987).