Under RCW 48.19.050, an insurer may authorize a bureau to file rates on its behalf. This section applies to members or subscribers that have granted filing authority to a bureau.

(1) Bureau members or subscribers must follow instructions provided by the bureau when they implement, delay or nonadopt a bureau rate filing that has been approved by the commissioner.

(2) If the insurer has authorized the rating organization to make filings on its behalf, the insurer is not required to file new bureau rates with the commissioner, except as provided under WAC 284-24-062.

(3) The insurer must make a filing with the commissioner if an insurer delays the effective date, nonadopts or changes a filing in any way. The filing must:

(a) Include a statement of the changes proposed by the insurer;

(b) Provide the filing number used by the bureau when it filed rates with the commissioner; and

(c) Be received by the commissioner in a timely manner.

(4) Under this section, "timely" means:

(a) Before the bureau effective date if the filing is made under RCW 48.19.040; or

(b) Thirty days after the bureau effective date if the filing is made under RCW 48.19.043.