A homogenous joint employer plan providing group health benefits, which was in existence prior to March 1, 1983, and which is associated with, or organized or sponsored by, an association exempt from taxation under United States Code, title 26, § 501(c)(6), and controlled by a board of trustees a majority of whom are members of the association, is exempt from the requirements of sections 62H.01 to 62H.08 and 471.617, subdivisions 1 to 3, and the insurance laws of this state, except that the association must comply with the provisions of chapter 62L with respect to any members that are small employers.