A multiple employer welfare arrangement, in connection with an employee welfare benefit plan, shall provide to each participating employee covered by the plan a written notice at the time the employee’s coverage becomes effective that states that:
(1) individuals covered by the plan are only partially insured; and
(2) if the plan or the arrangement does not ultimately pay medical expenses that are eligible for payment under the plan for any reason, the participating employer or its participating employee covered by the plan may be liable for those expenses.