Port districts exercising the authority granted by RCW 53.18.020 may take any of the following actions as incidental thereto: Make necessary expenditures; act jointly with other ports or employers; engage technical assistance; make appearances before and utilize the services of state or federal agencies, boards, courts, or commissions; make retroactive payments of wages where provided by agreements; and exercise all other necessary powers to carry this chapter into effect, including the promulgation of rules and regulations to effectuate the purposes of this chapter.